Model Boat Mayhem

The Shipyard ( Dry Dock ): Builds & Questions => Working Vessels => Topic started by: mermod on June 13, 2016, 12:55:08 pm

Title: 1:12 scale Logging Tug
Post by: mermod on June 13, 2016, 12:55:08 pm
Hi all, I've been fairly busy lately so haven't been posting a lot but I am having to rest up a bit after a health issue so I thought I would use the time to update you guy's on my latest little project.
I have always loved the look of those little simple models like George Turner's Tomsk so I thought I'd have a go at making something along those lines for myself, during one of my regular Google searches for mini tugs I came across a neat sketch of a logging tug done by a gent in the USA and managed to hunt him down and get permission to use his drawing as the basis for a model.
Basically I had to finish building my vac former and turn his sketch into a practical model so here's how it's been going......


First up was to import the sketch into my drawing software and add the necessary rib detail as well as generate the parts ready for laser cutting, as it was really only a solid plug for forming over the parts were to be cut from solid MDF
(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3646_zpsx0ytfxi1.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3646_zpsx0ytfxi1.jpg.html)


If you look hard at the centre of that last photo you can just see the original sketch.


And my rib detail looked like this
(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3645_zpsvzlqpou5.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3645_zpsvzlqpou5.jpg.html)



Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 13, 2016, 12:59:53 pm
After a few days of playing with the design and adding a little fore deck and a raised section for a towing bitt aft (plus heaps of sanding and bogging) I had the basic shape I wanted.


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3653_zpsvdwcgvck.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3653_zpsvdwcgvck.jpg.html)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3654_zpskvveznse.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3654_zpskvveznse.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 13, 2016, 01:07:44 pm
While everything was drying I had a play with the design of the wheelhouse and cut out a mock-up to see if what I wanted to do actually looked ok.


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3655_zps7t6vzxnw.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3655_zps7t6vzxnw.jpg.html)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3656_zps4dpwzt6l.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3656_zps4dpwzt6l.jpg.html)


The exhaust you see pictured was quite an adventure to make in itself, I turned down some dowel to the required diameter with a spigot left on either end, I then cut a small MDF hexagon for both ends that slid tightly onto that spigot, this enabled me to sit the part in my laser engraver, engrave one set of holes, slide the drawing up rotate the whole thing to the next flat spot of the hexagon and engrave again untill I had worked all the way around.........fun :
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 13, 2016, 01:13:51 pm
By this stage I was ready to do a few test pulls, I only had a few sheets of .75 high impact styrene but it was enough to give me an idea of what would work.


First test pull
(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3663_zpsotfgyqhk.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3663_zpsotfgyqhk.jpg.html)


Although the hull was reasonable I could tell that the large flat parts of the hull would benefit from some cooling channels just to add a some strength and while I was at it I added a spot for the rudder, by doing this it gives the epoxy around the rudder post a great place to pool.


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3671_zps65mdancu.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3671_zps65mdancu.jpg.html)



Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 13, 2016, 01:20:56 pm
After a few days of playing around with the MDF masters I had the rebate around the hull fitting perfectly, now in 1.5mm HIPS (High Impact Styrene).


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3670_zpsfchfd6mt.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3670_zpsfchfd6mt.jpg.html)


And my daughter caught sight of one of the prototypes and had to have it.........(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3675_zpsl3mchc8a.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3675_zpsl3mchc8a.jpg.html) In PINK of course :)

Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 13, 2016, 01:29:13 pm
One small issue I was having was the floor or deck was very thin as most of the 1.5mm was being used up in the relatively deep sides so by the time it stretched all the way to the bottom I wasn't really happy with the deck strength so I made a negative mold of the floor so the whole floor is now nice and thick with a good lip to locate the wheelhouse coaming molded in :) if you look closely you can just see the join line around the inside of the hull down near the floor.


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3661_zpsqlkkf9ug.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3661_zpsqlkkf9ug.jpg.html)


This was the first pull of the floor but after this I adjusted the mold and it is now a nice tight fit with even less of a join showing :)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3677_zpsgdwadhyy.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3677_zpsgdwadhyy.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: Martin (Admin) on June 13, 2016, 03:33:45 pm

Aha!  Interesting!   O0
Title: Re: 1:12 scale Logging Tug
Post by: missyd on June 13, 2016, 06:18:46 pm
Lovely model!  :-))
Title: Re: 1:12 scale Logging Tug
Post by: Charlie on June 13, 2016, 07:20:27 pm
Looking forward to seeing the finished boat. What are the dimensions?


Charlie
Title: Re: 1:12 scale Logging Tug
Post by: ballastanksian on June 13, 2016, 07:46:28 pm
Was that your daughter reading what looked like instructions in one of the photos! I hope she has a long interest in model boats, she might end up being as skilled as Danielle when she's grown up :-))
Title: Re: 1:12 scale Logging Tug
Post by: mike_victoriabc on June 13, 2016, 11:37:12 pm
Neat and tidy work! Looks like you have done this before?

Thanks for posting.
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 14, 2016, 12:39:25 am
mike_victoriabc, I have made on or two models before but this is my first attempt a vac forming.


ballastanksian, that's my boy and I do believe he's reading the instructions for a warhammer tank kit, he does love his boat's though and I recently bought him a german armed trawler he had wanted for quite a while.


Charlie, it's exactly 300mm long, not sure about the width, hadn't paid that alot of attention but I will check when and if I get back down the workshop today.


missyd, thank's :)
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 14, 2016, 12:50:37 am
This was the first test of the lower half of the wheelhouse over the coaming, the engine grating you see was changed slightly to incorporate a locating hole for the exhaust.


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3662_zps4gm8grq5.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3662_zps4gm8grq5.jpg.html)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3674_zpsffhz9pbp.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3674_zpsffhz9pbp.jpg.html)



Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 14, 2016, 12:57:55 am
Next up was to make molds for the upper wheelhouse, roof and doors, it's not easy to see but the upper wheelhouse is in 2 parts, the forward box section and a back wall that slides into place, both vac formed with window frame detail incorporated.


The wheelhouse former
(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3675_zpsl3mchc8a.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3675_zpsl3mchc8a.jpg.html)


First pull of the wheelhouse parts quickly glued together for effect, the figure is 1:12 scale


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3696_zpste3axsfb.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3696_zpste3axsfb.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 14, 2016, 01:00:30 am
(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3688_zpsav6gnwid.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3688_zpsav6gnwid.jpg.html)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3684_zpslxpwd9a6.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3684_zpslxpwd9a6.jpg.html)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3697_zpszjwmdfht.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3697_zpszjwmdfht.jpg.html)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3699_zpsbd5lw7dl.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3699_zpsbd5lw7dl.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 14, 2016, 10:48:51 am
When it comes to the r/c setup I'm thinking of a simple 380 brushed motor running off a 7.4v lipo but I must confess that I have never used a 380 in any model I have ever built, does anyone have any reservations about this size motor or will it have plenty of power?


Phill
Title: Re: 1:12 scale Logging Tug
Post by: Martin (Admin) on June 14, 2016, 12:59:23 pm
 
What about a Brushless motor option?   :-)

E.G.
http://www.hobbyking.com/hobbyking/store/__16229__NTM_Prop_Drive_Series_28_30A_750kv_140w.html
or
http://www.hobbyking.com/hobbyking/store/__12922__Turnigy_D2836_11_750KV_Brushless_Outrunner_Motor.html

Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 14, 2016, 01:16:59 pm
Oh Martin, I have been trying to talk myself out of that option just in case I decide to produce it as a kit and wanted to show a simple generic set up, plus I have a few spare brushed ESC's laying around and would have to order something in if I go brushless, also if I stick with a 380 I could form up a nice little motor mount, having said all that I will now go and see if there's enough on the pre paid card to order some brushless goodies.


Phill
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 14, 2016, 01:55:01 pm

What about a Brushless motor option?   :-)

E.G.
http://www.hobbyking.com/hobbyking/store/__16229__NTM_Prop_Drive_Series_28_30A_750kv_140w.html (http://www.hobbyking.com/hobbyking/store/__16229__NTM_Prop_Drive_Series_28_30A_750kv_140w.html)
or
http://www.hobbyking.com/hobbyking/store/__12922__Turnigy_D2836_11_750KV_Brushless_Outrunner_Motor.html (http://www.hobbyking.com/hobbyking/store/__12922__Turnigy_D2836_11_750KV_Brushless_Outrunner_Motor.html)


Ok Martin, motors now ordered, thank's for the link :)
Title: Re: 1:12 scale Logging Tug
Post by: rickles23 on June 15, 2016, 08:58:13 am
Hi,


If you do a kit of this boat I will buy one.


Regards
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 15, 2016, 09:25:38 am
SOLD! to the man in Port Mcquarie :-))  I'm getting some great feedback so It's definitely going to happen.


Phill
Title: Re: 1:12 scale Logging Tug
Post by: Tugtower on June 15, 2016, 09:35:42 am
A most Excellent thread, if you do come up with a kit be interested to get my hands on 2 or 3, kids will love it sailing around the garden pond!
 :-))
Possibility of a GRP hull?, reason i ask is vac formed plastic card can go brittle after a few years, and being a little tug its going to get knocked about, there is only so much the plastic can take before fractures start.


Single layer layup GRP would be enough to keep weight and cost down.
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 15, 2016, 10:06:53 am
Hi Tugtower, I shall put you on the list for when they are ready :-))  as for producing them in GRP, normally that would be the way I would go however there are a couple of reasons why I won't do them in glass, firstly is I have been having both neighbor and health issues when it comes to resin be it polyester or epoxy and I discovered that outsourcing them here in Tasmania is so costly I couldn't sell them, I found with my Albert kit just how much they want for glass hulls and sadly  it's just not do-able.
If you are worried about cracking a hull you can always scuff up the inside and give it a coat of fine glass matting set in epoxy resin, possibly a surfboard finishing mat, this would give it an incredible amount of rock bouncing ability  O0


Phill

Title: Re: 1:12 scale Logging Tug
Post by: Tugtower on June 15, 2016, 10:08:52 am
Good idea  :-))


Will await for kit production and put my order in! ( fyi it will probably be 3 )
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 15, 2016, 10:10:58 am
Just a little progress today, I made the masters for casting the fore and aft bollards.


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3708_zps126uwjqg.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3708_zps126uwjqg.jpg.html)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3716_zpsbtiyr9mf.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3716_zpsbtiyr9mf.jpg.html)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3717_zpso32nvnit.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3717_zpso32nvnit.jpg.html)


Then I had a muck around with some of my stock fitting's just for fun.


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3715_zpsxvpdmfii.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3715_zpsxvpdmfii.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: Big Ada on June 15, 2016, 05:45:25 pm
Looking good.

Len.
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 15, 2016, 10:42:15 pm
Thank's Len, glad you like it  :-)) .


It was mentioned to me that this is like a club 500 for the tugboat world (which is a great compliment) and I see you get a driveshaft with that particular kit, so far I wasn't going to include a propshaft as I cant source any at a price that would make it do-able, by any chance does anyone here on mayhem know where to source a cheap 150mm long propshaft from?


Phill
Title: Re: 1:12 scale Logging Tug
Post by: ballastanksian on June 15, 2016, 11:24:28 pm
Hey Phill, I like your vac formings, they look very crisp and much better than the vague, lumpy and often frail offerings fro the Vac form air craft world.

I am glad to hear that both your kids have an interest at some level in the hobby. Pop up some pictures of your boy's trawler when you both start building it.
Title: Re: 1:12 scale Logging Tug
Post by: Tugtower on June 16, 2016, 12:16:13 am
Obviously producing a kit with a few of the extras such as prop shaft, motor, linkages and rudder are great.


But as with most kits the running gear can suffer as a result of keeping the kit to a reasonable price level.


The club 500 is a great model but when model slipway owned it, they supplied an M5 shaft with plastic bushings, great as a start but the shaft was awful, it 'sticks the motors' when it warms up and reduces speed and run time.
i believe many of us swapped out to something better, i know i did!
I can't say what the new owners are putting in the kit, i hope they have improved in a few places.

With modern advancements in the electronic depts, its probably better to keep the kit as just the moldings and avoid adding the extras, make suggestions on the building instructions would be preferable for those just starting out, many builders will opt to put their own running gear in depending on what they are going to run with.


Which is how lesro/vintagemodelboat co. are doing kits. Just the model and no running gear, leaving the scope open for the builder, so a good model at decent value for cash!


This would also help in reducing costs on shipping given your distance as well as you having to front extra costs for stock. That can be pricey, average cost of a shaft is around £8 give or take, you order say 25 for stock, that's £200 already laid out in one part + the other components on top.


Its up to you obviously how far you wish to go with a kit, just my 2 cents.
Title: Re: 1:12 scale Logging Tug
Post by: Antipodes on June 16, 2016, 02:23:24 am
Phill,

This looks great :-)) :-)). I'll be keen for a couple when the kits are ready.

Kind wish,

Bruce
Title: Re: 1:12 scale Logging Tug
Post by: rickles23 on June 16, 2016, 09:26:35 am
Hi,


As I usually sail in salt water I only use one type of prop shaft which I order from Victoria.


Don't include the fittings and everyone will still be happy.


Regards
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 16, 2016, 09:54:20 am
Thank's for the kind words and the advice on what to include, look's like the best bet is to go with the original plan and let the buyer sort out his/her own shaft and prop, I will do a few tests and work out what I think works well and suggest what to use as well.


The next question I have is a sure to cause controversy, obviously I have fixed costs to consider but what would everyone expect to pay for such a model, basically it will be 10 thermoformed pieces of 1.5mm High Impact Styrene and the resin fittings which will be 1x exhaust 1x forward bollard 1xtowing bitt and a rudder with the shaft cast into it as well as a fitting in the hull for the rudder tube, the finished length is 300mm long and 170 wide, if you have a suggestion and don't want to post it then feel free to PM me.


Also after some searching I have found an Australian supplier of coloured styrene sheet, I will give them a call tomorrow and see what my options there are, I foresee a bright yellow minion inspired tug with a blue bottom on the horizon :) thanks for the suggestion.


Phill
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 17, 2016, 07:17:47 am
Regarding the use of different coloured HIPS, turns out the only Australian manufacturer only supplies in 1000kg lots, there is an importer that will import coloured sheets from the UK but the order need's to be done months in advance so it looks like I'm stuck with white, thank goodness it's easy to paint :)


Phill
Title: Re: 1:12 scale Logging Tug
Post by: rickles23 on June 17, 2016, 09:05:18 am
Hi,


In which case make mine a white one... {-)


Regards
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 17, 2016, 09:34:52 am
Very good rickles23  :-))


There was one more resin fitting I think need's to be added to the final kit........


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/IMG_1451_zpsedoskdcs.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/IMG_1451_zpsedoskdcs.jpg.html)


with all the supplied fittings (except rudder at this stage)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/IMG_1449_zpstfxj6mxd.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/IMG_1449_zpstfxj6mxd.jpg.html)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/IMG_1453_zpsftsvyd6a.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/IMG_1453_zpsftsvyd6a.jpg.html)



Title: Re: 1:12 scale Logging Tug
Post by: Big Ada on June 17, 2016, 05:41:48 pm
Got a bunged up dose,? {-) (nose)
Title: Re: 1:12 scale Logging Tug
Post by: ballastanksian on June 17, 2016, 08:01:17 pm
Get well soon. She looks like a beauty :-))
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 18, 2016, 01:45:49 am
Yeah, that's me, sinus infection at the moment and that was the closest thing I could find to prop the nose up  ;)


Phill
Title: Re: 1:12 scale Logging Tug
Post by: mermod on June 19, 2016, 12:33:20 pm
Made the masters for the skeg, rudder and tiller support/locator, I feel a little less nervous when the kids use my tugs if I know the rudder and prop have a skeg protecting it :)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3721_zpsslkpgyhb.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3721_zpsslkpgyhb.jpg.html)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3722_zps129dla7b.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3722_zps129dla7b.jpg.html)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3718_zps2l5s3soa.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3718_zps2l5s3soa.jpg.html)


(http://i1357.photobucket.com/albums/q760/Phillip_Sachman/DSCF3730_zpslwnwvgjj.jpg) (http://s1357.photobucket.com/user/Phillip_Sachman/media/DSCF3730_zpslwnwvgjj.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: Tugtower on June 19, 2016, 05:22:39 pm
Superb  :-))
Title: Re: 1:12 scale Logging Tug
Post by: ballastanksian on June 19, 2016, 05:36:45 pm
Indeed, she is a beauty.
Title: Re: 1:12 scale Logging Tug
Post by: mermod on July 31, 2016, 10:27:50 am
Still dragging my feet but I managed to get some RC gear into the prototype just to prove the design before I start selling them, she performed beautifully :) I will now join the upper and lower sections and throw some paint on it............stay tuned!


A little video https://www.facebook.com/250190361689419/videos/1166137296761383/


Phill
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 04, 2016, 12:46:54 pm
All painted, ballasted and ready to go, I just have to get some build photo's onto a CD and the kit will be ready to go, I hope you have all enjoyed the build.


https://youtu.be/ajBbaANteo0


Phill
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 23, 2016, 11:06:35 am
So I'm finally back on deck, the molds have been perfected are ready to go and I have been flat out taking photo's for an instruction book, I thought I might go ahead and post those photo's on here as well.


So the first job is to give all the parts a good soapy warm water wash to remove any traces of release agent, then locate the dimples where the rudder and propshaft should locate and drill out with a small pilot hole, then enlarge the rudder hole to 6mm so the rudder assembly can locate inside the hull and enlarge the hole in the keel to suit your propshaft.
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1557_zpstkqqd1aa.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1557_zpstkqqd1aa.jpg.html)


The rudder assembly should locate nicely into the recess in the hull.
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1562_zpsfe2btygs.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1562_zpsfe2btygs.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 23, 2016, 11:15:39 am
At this stage, before gluing anything I suggest making sure everything lines up nicely.
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1564_zpsnulcjikh.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1564_zpsnulcjikh.jpg.html)


With the skeg taped in place temporarily I now fit the propshaft making sure it runs parallel to the keel (hence the rulers)
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1572_zpscpun4qgc.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1572_zpscpun4qgc.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 23, 2016, 11:21:47 am
Allow about 4mm of the tube to extend past the outside of the keel.


(http://i58.photobucket.com/albums/g244/psachman75/IMG_1600_zpsp3ep1s4z.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1600_zpsp3ep1s4z.jpg.html)


This is where I would line the skeg up and glue it in place, once again check that it is all straight.
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1597_zpstc3v31bl.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1597_zpstc3v31bl.jpg.html)


(http://i58.photobucket.com/albums/g244/psachman75/IMG_1579_zpslpq5dv87.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1579_zpslpq5dv87.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 23, 2016, 11:24:57 am
Next up I check the rudder assembly is hard against the hull and fix in place with a drop of CA followed but a nice gob of epoxy which I also put around the shaft.


(http://i58.photobucket.com/albums/g244/psachman75/IMG_1574_zpslqmnimvt.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1574_zpslqmnimvt.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 23, 2016, 11:33:03 am
While the epoxy is drying I start on the upper sections, start by opening up the access hatch in the deck section.


(http://i58.photobucket.com/albums/g244/psachman75/IMG_1580_zpsanezhuev.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1580_zpsanezhuev.jpg.html)


Trim around the inside edge with a sharp knife, remember multiple light cuts work best.
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1581_zps1wuyvzwl.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1581_zps1wuyvzwl.jpg.html)









Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 23, 2016, 11:41:16 am
Next up, find the part that forms the coaming that the wheelhouse will locate onto, using a plastic glue (I like the tubes of thick humbrol) and glue it onto the lip in the deck section, dont try and press it down too hard, it just needs to sit nicely, if you try and push it down hard to the deck it will distort.
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1584_zpsen3kbh41.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1584_zpsen3kbh41.jpg.html)
( I notice I had not cut out the access in the deck section in the photo yet but it doesn't matter at this stage)


Once it's set you can cut out the access hole :)
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1586_zps9clhlsou.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1586_zps9clhlsou.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 23, 2016, 12:15:50 pm
Next up, release the deck section from the frame (remember multiple light cuts)


(http://i58.photobucket.com/albums/g244/psachman75/IMG_1602_zpse5bpzkuw.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1602_zpse5bpzkuw.jpg.html)


Then sit the deck section in place and mark out where the access hole needs to be.
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1603_zps7z08rqgk.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1603_zps7z08rqgk.jpg.html)
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1605_zpssyum8uxp.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1605_zpssyum8uxp.jpg.html)


Then glue the deck section into place (plastic glue), this effectively gives the deck double thickness.
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1610_zpsexq6ormg.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1610_zpsexq6ormg.jpg.html)

Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 23, 2016, 12:30:53 pm
Before you join the top and bottom halves of the hull together it's a good time to get your choice of electrics sorted, I try and make the motor, battery and steering servo easily accessible and tuck things like the ESC and the receiver under the deck out of the way.
It's also a good time to look at ballast (notice the 2 small lead weights I have at the stern)



(http://i58.photobucket.com/albums/g244/psachman75/IMG_1625_zpsqkadrmbx.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1625_zpsqkadrmbx.jpg.html)


Notice that I have also drilled an access hole so I can get at the tiller, there is a laser cut panel that glues over this hole (silicone so I can remove it if I ever need to)
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1627_zpsgwz1mqqw.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1627_zpsgwz1mqqw.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 23, 2016, 12:43:03 pm
Before gluing the upper and lower halves together (with thickened epoxy) the rebate where the top slides over the bottom needs to be scuffed up for a better glue joint, then apply the epoxy to the upper half then slide down onto the bottom, once again don't push it down too hard just until the joins line up nicely.


(http://i58.photobucket.com/albums/g244/psachman75/IMG_1631_zpshsczh9x4.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1631_zpshsczh9x4.jpg.html)
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1632_zpspwj0wq3w.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1632_zpspwj0wq3w.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: ballastanksian on August 23, 2016, 11:02:54 pm
If your printed instructions are as clear as these then the kit will be a joy to build. I would add an image of the dimples for ID purposes just in case. (Call me Mr OCD)

Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 25, 2016, 09:17:02 am
Ballastanksian, I assure you my dimples are gorgeous or so my wife tells me  ;) , I will get a photo of them just for reference.
I have been asked to give a better description of all the RC gear I used in the demo boat.........
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1638_zpsdejiqkcl.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1638_zpsdejiqkcl.jpg.html)


http://www.hobbyking.com/hobbyking/store/__8932__Turnigy_2200mAh_3S_20C_Lipo_Pack.html


http://www.hobbyking.com/hobbyking/store/__16229__NTM_Prop_Drive_Series_28_30A_750kv_140w.html


http://www.hobbyking.com/hobbyking/store/__13445__HobbyKing_Brushless_Car_ESC_45A_w_Reverse.html


I should add that I'm not a fan of this ESC as It only has about 1/3 power in reverse and I cant figure out how to program it out although I don't have to worry about the kids sucking it under in reverse  O0
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 25, 2016, 09:19:49 am
I should also add that that ESC is a bit of a squeeze, there may be smaller options.


Phill
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 25, 2016, 12:45:16 pm
While the hull is drying It's a good time to make a start on the wheelhouse, there is a lower, upper, back wall and roof piece, in this picture you can see the back wall piece needs to be trimmed to 6MM (black line in the photo)


(http://i58.photobucket.com/albums/g244/psachman75/IMG_1612_zpsaiezpabk.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1612_zpsaiezpabk.jpg.html)


Better photo
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1613_zpsuwuw7fah.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1613_zpsuwuw7fah.jpg.html)

Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 25, 2016, 12:49:43 pm
The back wall can then be glued into the back of the wheelhouse, once again I use the thicker Humbrol plastic kit glue, once dry I run another bead around the join to act as a filler.
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1615_zpsbk9jcn9x.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1615_zpsbk9jcn9x.jpg.html)


The top section can then be glued to the lower section.
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1616_zpsxi3dgpvs.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1616_zpsxi3dgpvs.jpg.html)


(http://i58.photobucket.com/albums/g244/psachman75/IMG_1617_zpsj7mfop6l.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1617_zpsj7mfop6l.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 25, 2016, 12:54:43 pm
Next up, trim the roof down to 6mm.


(http://i58.photobucket.com/albums/g244/psachman75/IMG_1622_zpse2zptmwi.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1622_zpse2zptmwi.jpg.html)


Then glue into place 6mm in from the back wall and 6mm in from the sides.


(http://i58.photobucket.com/albums/g244/psachman75/IMG_1633_zpsk051w8ic.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1633_zpsk051w8ic.jpg.html)
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1634_zpswov3yj7t.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1634_zpswov3yj7t.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 25, 2016, 12:56:23 pm
Next job is to trim the doors down to 3mm.


(http://i58.photobucket.com/albums/g244/psachman75/IMG_1636_zps0gkqwule.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1636_zps0gkqwule.jpg.html)


(http://i58.photobucket.com/albums/g244/psachman75/IMG_1637_zpseblngtvx.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1637_zpseblngtvx.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 25, 2016, 12:59:05 pm
And a shot of my favorite plastic kit glue :)
(http://i58.photobucket.com/albums/g244/psachman75/IMG_1587_zpssp22ldfh.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1587_zpssp22ldfh.jpg.html)
Title: Re: 1:12 scale Logging Tug
Post by: ballastanksian on August 26, 2016, 10:32:34 pm
Cor, that brings back memories of making model kits on the kitchen table and that lovely aroma:O)

BTW, keep it away from your dimples mate!
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 27, 2016, 12:43:45 am
Cor, that brings back memories of making model kits on the kitchen table and that lovely aroma:O)
I've had 3 friends walk into the workshop while I have been building these and they have all stopped dead, taken a big sniff and said exactly the same thing  O0


Phill
Title: Re: 1:12 scale Logging Tug
Post by: mermod on August 28, 2016, 09:53:37 am
I still have a few more steps to post but I just had to share a pic of the current prototype :)


(http://i58.photobucket.com/albums/g244/psachman75/IMG_1666_zpsqa3jl3jv.jpg) (http://s58.photobucket.com/user/psachman75/media/IMG_1666_zpsqa3jl3jv.jpg.html)


Phill
Title: Re: 1:12 scale Logging Tug
Post by: ballastanksian on August 28, 2016, 08:20:32 pm
In that colour she looks like a trophy Phill! Lovely job.
Title: Re: 1:12 scale Logging Tug
Post by: mermod on November 15, 2016, 04:12:17 am
Well It's been quite a while since my last update, good news is I'm still alive and the kits have turned out quite nicely, I have been working down the list of inquiries but have been having issues with my email (and the PM system for those on other forums) if anyone is still waiting on quotes for freight I apologize, please send me a fresh PM.
https://www.youtube.com/watch?v=rXYhHRZ2KG4
If anyone is still interested the kits are still currently $100AUD and express freight with insurance to the UK is $65.62AUD


Phill
Title: Re: 1:12 scale Logging Tug
Post by: mermod on November 15, 2016, 04:17:02 am
Just reading back over my post's and thought I would make it clear that this is a Semi Kit, so you receive a full set of vac formed parts, resin fittings and instruction manual.


Phill
Title: Re: 1:12 scale Logging Tug
Post by: JIM WORNER on December 10, 2016, 01:54:57 pm

Super design; it will annoy some of our "purists". Any idea when you will be releasing kits.
Thinking of postage to the UK, perhaps an option of no hardware?
Either way, please can I order one?
Cheers  Jim :-))
Title: Re: 1:12 scale Logging Tug
Post by: mermod on December 14, 2016, 09:45:06 am
Hi Jim, sorry I have taken a while to answer, just a tad busy this time of year :) I have some quotes on freight to give you an idea of the costs, here is a copy/paste of prices for you.


I have cleared a backlog of orders and have had a chance to get some more quotes on freight.[/size]We quote on sending them via Australia Post, express delivery and with insurance, the kit's are still currently $100AUDFreight cost's are as follows....Canada $63.77 AUDChina $61.97 AUDUSA $63.77 AUDUK $65.62 AUDWe do take PayPal but have to charge the fee extra, If I have missed anyone out in these prices please let me know, possible best to drop me a line


As for a no hardware option, the kit is a semi kit only so you get all the vac forming's, resin fittings and instructions, r/c, propshaft, prop etc need to purchased separately but the instructions have a full list of whats needed.

I have a build on another forum also that might give you some extra info...... https://www.rcgroups.com/forums/showthread.php?2671251-Log-Bronc-from-Tasmania/page7