Model Boat Mayhem
The Shipyard ( Dry Dock ): Builds & Questions => Pleasure boats, Sports, Race, Power and Leisure Boats: => Topic started by: Chris_b_uk on September 10, 2011, 03:15:42 pm
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Hi All,
I'm in the process of building my 1st model boat ! A Fairey Huntsman 34". I thought I will make it a bit easier on myself and bought a kit with a fibreglass hull. I built myself a stand for it and I'm now ready to start :-)
The last picture show where i am with the hull frames. More to follow as i progress....
I haven't yet decided on the motor/esc/batteries, but one thought was this Overlander Brushless motor which is a T4250/06 800kv, a reasonable size motor which should have lots of torque but would it have enough RPM at only 800kv (with a 14.8v lipo it will give me 800*14.8=11840 rpm) ?
I have a 3 blade 40mm prop on a 4mm shaft at the moment, I guess i want the ability to turn a reasonable amount of speed.
http://www.overlander.co.uk/tornado-thumper-v2-4250-06-800kv-motor-949.html (http://www.overlander.co.uk/tornado-thumper-v2-4250-06-800kv-motor-949.html)
some other motors Overlander do are:
SeriesMotor Kv Watts Winds Esc Cells Propellors Weight Shaft
V2 T2226/25 1800 115 25 10 2 - 4 8 x 4 21g saver
V2 T2230/15 1780 125 15 15 2 - 4 8 x 4 27g saver
V2 T2826/09 1900 260 9 18 2 - 4 from 7" 50g 3.2mm
V2 T2826/14 1200 235 14 18 2 - 4 from 8" 50g 3.2mm
V2 T2836/8 1120 290 8 20 2 - 4 from 8" 67g 4mm
V2 T3536/5 1450 650 5 40 2 - 4 from 8" 110g 4mm
V2 T3536/8 1000 480 8 40 2 - 4 from 9.5" 110g 4mm
V2 T3548/5 900 770 5 60 2 - 4 from 9" 155g 4mm
V2 T4240/10 890 650 10 60 3 - 7 from 13" 140g 5mm
V2 T4250/6 800 1010 6 60 3 - 7 from 13" 210g 5mm
V2 T4260/6 500 1375 6 60 3 - 7 from 15" 280g 5mm
V2 T5045/10 720 1250 10 80 3 - 8 from 13" 210g 8mm
p.s fantastic forum so much information :-))
Thanks
Chris
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Nice clean work so far Chris :-))
Watching this thread with interest as I'm hoping to renovate one of these boats sometime in the not too distant future.
Regards,
Ray.
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defanetly watching this have a hull coming soon that needs fitting out :-))
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you seem to have done a lot of homework. That selection of prop to motor seems like a very educated and wise choice you have either read a lot, been told, or allready do another form of rc. id up the voltage though or possibly use a higher kv motor. maybe this:
http://www.hobbyking.com/hobbyking/store/__8489__Turnigy_4250_Brushless_Motor_1000kv.html
or maybe this, should produce enough torqe:
http://www.hobbyking.com/hobbyking/store/__8488__Turnigy_4240_Brushless_Motor_1300kv.html
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Thanks !
I have spent hours reading posts on this forum! Though I have done some Heli and Plane modeling before but not with brushless.
I will check out those motors as well, I can always go up a 5S battery as I haven't bought them yet.
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going up to 5s would be the better choice, if its too fast you can always down to 4s.
Dont forget to buy a lipo balance charger too. A 60 amp esc will do the trick though make sure it can cope with 5s voltage.
i use this esc for my boat its ok. BUT sometimes you dont get the instructions and occasionally some dont work properly lol but there cheap as chips.
http://www.ebay.co.uk/itm/SEAKING-60A-Water-Cool-Ship-Brushless-Motor-ESC-SL175-/390249326975?pt=UK_ToysGames_RadioControlled_JN&hash=item5adcac297f
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Hi all,
Thought i would post an update, been away all week so not had a chance to do much. But i have just found out that after gluing the side stringers and placing it in the hull it is too wide doh!! :(( (see pic).
I also have to do a fair bit of sanding down of the bulkheads so the fit the profile of the hull.
oh well off to do a bit of remodelling....
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how did you manage that :o
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Did you read the instructions wrongly ? Or was it a mistake in the plans ? Alan
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hi guys.
the manual for seaking 60A esc.
www.hobbywing.com/upload/manual/SeaKing_080628_e.pdf (http://www.hobbywing.com/upload/manual/SeaKing_080628_e.pdf)
regards
don
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Don't think I read the instructions wrong, there are cut out slots for the stringers to fit in. I think there is just large tolerances in the manufacture of the pre cut wood and hull.
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Thats shocking that a kit comes with parts that are clearly wrong size,also the moulding looks very very resin rich which makes for a very heavy moulding .Extra resin only adds weight and no extra strength,the inside of the hull should look dry not shiny and wet .Also they used white resin so i bet any money its not even top quality Lloydes aproved resin just cheap easy laminating resin.It amazes me how these companys get away churning out rubbish for the money they charge,its also a chopped mat layup no cloth at all,im wondering how much you paid for it because this moulding was done on the cheap.
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i think there is a manufacturing error.
(http://s2.postimage.org/28g361otg/difference.jpg) (http://postimage.org/image/28g361otg/)
i think the holes for the motors to go threw are on the wrong bulkhead. looking at the pic, it seems to me the rear bulkheads and lot narrower and deeper than the front ones. The ones you have for the back are actually the front, and the manufacturer has cut out the engine provision in the wrong bulkhead.
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Your absolutely right Mike, that sructure won't fit into the hull properly (the deep end of hull is at the front)
I know if it was me who bought that kit I'd be intouch with the supplier and iether get my money back or
insist that they correct all the faults in that one. I feel sorry for you Chris as this is your first build and all these
negative coments must be a disapointment to you but your only going to find it dificult to work around the
faults. Did you buy it on E-bay ? There is someone selling the kits for around £130. Alan
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I think i might have misled you that pic with all the clamps on, it just happens to be sitting the wrong way around on the deck ply. The frame work did fit in the hull at the back (stern) it was just at the front where is was too wide, i have now "re modelled " it and it now fits in the hull. (Phew)!
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phew that was close. i wouldve looked rather silly if you had decided to take all those bulkheads out and rearrange them only to be wrong cos of a upside down picture. looks like its back on your head now, you should be ashamed >>:-( {-) :-)) you have managed to get it fit nicely though. Proper modellers do that!!
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ok got around to doing a bit more building, a bit of the internal cabin. Bit of a pain to keep together but rubber bands and masking tape helped :-)
My Motor arrived today as well.. went for the Tornado Thumper V2 4250/06 800KV Motor, to go with my 40mm prop.
Now to hunt for a water cooled ESC.. is there any make/model to avoid? (unreliable etc..)
I was also told that if you go for say a 60amp rated motor for use in the air you should go for a higher rated ESC for use in the water like 100amp due to the greater resistance is this true?
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yeah 100 amp for that fella
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I have a 34" Huntsman as does a freind and we run 900kv Outrunners with 45mm props(2 blade) and I also have same setup in a 35" Perkasa, Huntsman are on 12v and Perkasa is on 14.8v and all with watercooling. Use 80a esc's and no issues at all, run very cool.
Very nice build look forward to watching the progress.
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I have a 34" Huntsman as does a freind and we run 900kv Outrunners with 45mm props(2 blade) and I also have same setup in a 35" Perkasa, Huntsman are on 12v and Perkasa is on 14.8v and all with watercooling. Use 80a esc's and no issues at all, run very cool.
Very nice build look forward to watching the progress.
Hi ritchie, is your Huntsman finished now mate ? Haven't done anything to mine for a while. This build of Chris's looks good tho. Alan
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I will shortly be fitting the prop shaft and was wondering what clearance to leave between the top of the prop and the hull ? ( with the possibility of increasing the prop size in the future).
Also how far back should the face of the prop be from the rudder with a water scoop in-between ?
( the instructions are not clear {:-{ )
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Done a bit more work today glued the frame into the hull and drilled the holes for the rudder and prop shaft.
(http://s2.postimage.org/267ie0e90/Dudley_20110925_00076.jpg) (http://postimage.org/image/267ie0e90/)
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Managed to do a bit more on the boat, fitted the prop and rudder and a bit more to the frame.
(http://s3.postimage.org/11a76mt6s/Dudley_20111008_00081.jpg) (http://postimage.org/image/11a76mt6s/)
(http://s3.postimage.org/11aahpi6c/20111008_00084.jpg) (http://postimage.org/image/11aahpi6c/)
(http://s3.postimage.org/11akexl50/Dudley_20111009_00087.jpg) (http://postimage.org/image/11akexl50/)
(http://s3.postimage.org/11anq0a4k/Dudley_20111009_00086.jpg) (http://postimage.org/image/11anq0a4k/)
(http://s3.postimage.org/11b0yb22s/Dudley_20111009_00085.jpg) (http://postimage.org/image/11b0yb22s/)
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Hi all,
Sorry for not posting sooner been a bit busy at work :((
Got around to doing some more of my boat. After putting the basic ply deck down i thought i would plank it to give it a more authentic look (plus i have seen some great examples by you guys :} )
(http://s12.postimage.org/u9lxakdg9/Dudley_20111120_00162.jpg) (http://postimage.org/image/u9lxakdg9/)
(http://s8.postimage.org/appv1vdcx/Dudley_20111120_00163.jpg) (http://postimage.org/image/appv1vdcx/)
(http://s11.postimage.org/jeutxrymn/Dudley_20111204_00167.jpg) (http://postimage.org/image/jeutxrymn/)
I then started to fit the cabin.
(http://s12.postimage.org/awv14antl/Dudley_20111204_00170.jpg) (http://postimage.org/image/awv14antl/)
I was wondering what to finish the desk in. Someone said to epoxy resin in with either thin tissue paper or thin glasspaper (more transparent) with several coats of Epoxy, sanding down between coats then t-cut to finish. I'm running a few trials of the above to test, has anyone done anything similar?
Thanks
Chris
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been a long time welcome back to the forum
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Hi Chris
I am enjoying your build. So far I have just been lurking but how do you achieve that caulking effect, what materials/any photos? I'll be trying it soon that's why I ask.
Dave
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Hi Dave,
For the decking i use 6mm wide x 1mm thick strips of mahogany and 1 mm wide x 1mm thick strips of a white wood (cant remember which one). looks nice, I think i plan on using thin glass clothwith resin on the top,1 layer of glass cloth with probably another 2-3 of resin, sanded down in between coats and then t-cut to finish.
Regards
Chris
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Nice work Chris.
I am looking forward to seeing a picture of the finished model.
Cheers
Jon
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Hi Chris
Thanks your 6:1 looks a really good proportion, I'll go for that. :-)) I can't tell from the photo - is that Kingplank a regular 6mm or does it have aslight taper?
Re thin tissue paper - I take it you don't mean tisssues as in a box of? Is it more like that tissue paper that comes with shirts? Or is it a tissue especially for modelling?
Keep posting Chris - love the pics.
Dave
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GLASS FIBRE TISSUE......
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You`ll get it in Halfords.
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Glass makes much more sense to me but I did read it somewhere about a good quality tissue paper.
Perhaps (no probably, or even certainly {-)) I have got another process mixed up.
Well thats what the forum is for - I can make my mistakes here and avoid making them on the boat O0.
Dave
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Sealing Balsa - Dope, tissue paper. http://www.building-model-boats.com/tissue-and-dope.html
Thought I had read something - just failed to engage the grey matter too :embarrassed:
Dave
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Hi Dave,
The planks are normal square shaped not tapered, where they meet i have cut them at and angle to join them up.
There are 2 type of material you can use with resin:
1) Thin glass fibre cloth or (dries transparent)
2) Tissue paper, not from a tissue box but thicker, a bit like tracing paper but not as thick, i got some from my model shop, (dries not quite fully transparent).
I have run a test on the 2, the one on the left is tissue paper the one on the right glass cloth, its difficult to see but the glass cloth one is fully transparent and brings out the colour of the wood more while the paper one very slightly dulls it.
Chris
(http://s12.postimage.org/ywd55suqx/Dudley_20111212_00188.jpg) (http://postimage.org/image/ywd55suqx/)
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Hi Chris
I am much less embarrassed following your last post :} and I'll take your word on the glass issue
Re planks - it was only the Kingplank I wasn't sure of because of the camera angle.
It's lovely anyway mate. So like Oliver ............ Please Sir, can I have some more? :-))
Dave
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Why not just seal the lot with epoxy resin and no tisue ok2.
Mart
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Dave, I used grey card, from Rennies top of Bold street, very cheap! I laid a plank, stuck it with alphatic (not sure on spelling?) wood glue (they sell that also!) as it works very well and dries clear, then used bostic to glue a strip of card, then the next plank, and so on, very time consuming! The card does not need to be flush at this time, you sand it down, then use ronseal clear resin so the finish does not turn into something resembling toffee :} I tried to replicate teh weathered effect using a grey wash, but the plank effect was lost, so rubbed it all down and just used the stain, which ended up real nice! :-))
look how the wood has weathered in this shot
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Hi Peter
Yes yours and Chris's caulking gives great definition to the planking. What width and thickness was your planking?
I am looking at some black walnut just now for my Spraymaster. I am really enjoying the Huntsman threads like this.
Dave
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Hi Peter
have you been having funny dreams again ? :embarrassed: :embarrassed: :embarrassed:
PETER {-) {-) {-)
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Yes Peter - see latest reply to Red's offer.
Dave
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red's name is Paul {-) {-) {-)
Peter %%
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Hi Chris
Just wondering how it's all coming along?
Dave
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Hi All,
Sorry for not posting for awhile :embarrassed: .
But i have done a lot on my boat! in fact so much so it has had its 1st sea trials! I will try to bring you up to speed....
1st. Decking has all been layed.
and i have started to apply some coats of resin.
(http://s14.postimage.org/5hr1fpi0d/Dudley_20120212_00220.jpg) (http://postimage.org/image/5hr1fpi0d/)
(http://s15.postimage.org/i3ewbnql3/Dudley_20120218_00224.jpg) (http://postimage.org/image/i3ewbnql3/)
I have also made the windows and sprayed the cabin
(http://s14.postimage.org/hrjph7xwt/Dudley_20120405_00257.jpg) (http://postimage.org/image/hrjph7xwt/)
(http://s18.postimage.org/uik1uwlx1/Dudley_20120405_00256.jpg) (http://postimage.org/image/uik1uwlx1/)
Chris
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I have also fitted the motor and electronics..
(http://s17.postimage.org/4c18hymwb/Dudley_20120503_00295.jpg) (http://postimage.org/image/4c18hymwb/)
including cooling for the ESC.
(http://s7.postimage.org/ke5fdn0x3/Dudley_20120503_00296.jpg) (http://postimage.org/image/ke5fdn0x3/)
with the cabin on and a few more coats of resin on the deck.
(http://s13.postimage.org/3rvwdoh9f/Dudley_20120414_00280.jpg) (http://postimage.org/image/3rvwdoh9f/)
with railings
(http://s16.postimage.org/ncru9d68x/Dudley_20120503_00294.jpg) (http://postimage.org/image/ncru9d68x/)
I then did a dry run of the motor and had a bit of vibration so i fitted a p frame to the prop and that cured it.
(http://s13.postimage.org/mhsh85zdv/Dudley_20120503_00298.jpg) (http://postimage.org/image/mhsh85zdv/)
I still have a lot of fitting and cabin work to do but i thought i would take it for her 1st sea trials. Video on You tube..
1st http://youtu.be/wXNvXDeV9GA (http://youtu.be/wXNvXDeV9GA)
2nd http://youtu.be/s-RCK7bGw9I (http://youtu.be/s-RCK7bGw9I)
3rd http://youtu.be/3qbBtx7I4Xg (http://youtu.be/3qbBtx7I4Xg)
I only used 1/2 power max here with a 40mm x type prop on a 14.8 Lipo. I plan on trying it on full power on a 45mm prop when the weather stops raining! ;)
Chris
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Here's my build log... just started mine.
http://www.modelboatmayhem.co.uk/forum/index.php?topic=36813.0
I had the same issues as you with the inner frame being a little too large... I warmed the hull with a hot air paint stripper and got it almost all the way in. Just need to level the stringers flush with the hull edge now.
Reading your thread I think I might have over estimated the motor (1020Kv on 6S lipo)
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wow that might actually take off!
Those video's are only using 1/2 power on a 40mm prop on a 800kv motor with 980 watts (though im not using all that power as im only putting 4s through it - it can take 7s).
One thing i learnt was make sure you add a A or P frame to the prop as i had bad vibration at only 1/2 speed. Once i fitted one it went away :-), I also fitted a support at the other end of the shaft inside the boat.
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Ive got a heavy duty P frame on order. I read Red181's build log and decided that one would be wise.
http://www.mobilemarinemodels.com/acatalog/Shaft_Supports.html
I am starting to think that the motor might be too much, so I'm going to order something a little more sedate maybe in the 6-800Kv range
Like this one
http://www.leaderhobby.com/product.asp?ID=9394001226977
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(http://s16.postimage.org/soptbs2nl/25032012187.jpg)[/url
Hi. Thought you may like to see my newly completed Huntsman 46". Its made from all wood construction and is fitted with a 10cc nitro engine. Had its first test last sunday. Enclosed is a youtube clip. Think you may need to copy and paste the the attachment below.
http://www.youtube.com/watch?v=cogxkxpWYo4
Good luck with yours.
Anthony (http://postimage.org/image/soptbs2nl/)
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Looks very nice :-))
Goes quite well !