Topic: Martin builds the Q1 Mini Logging (Dozer?) Tug (Read 11113 times)

SteamboatPhil · « **Reply #50 on:** March 22, 2020, 04:38:33 pm »

Light bulb moment

I have a large paddling pool and if I am stuck in the workshop (apart from meals and to make sure steamboat apprentice is still binge watching Eastenders

) a perfect time to do some testing

Well at least can do the washing up then have sail when he finishes (the boat that is)

coch y bonddu · « **Reply #51 on:** March 22, 2020, 10:43:40 pm »

Any updates really enjoying this one

Dave

Martin [Admin] · « **Reply #52 on:** March 22, 2020, 11:58:44 pm »

Evening! I seem to have reach an impasse at the moment.... but I usually do at this stage, ie. fixing in the motor,
stuffing tube & skeg... screw this up and it's a big horrible repair!

( NB: I'll probably be using good old Stabilit Express... as log as that hasn't gone hard too! .... £22 a tube now?!? )

In the meantime, I've started that card TID Tug build: https://www.modelboatmayhem.co.uk/forum/index.php/topic,64562.msg685527.html#msg685527

Big Ada · « **Reply #53 on:** March 23, 2020, 04:24:01 pm »

That Hull reminds me of a Car't Dor Ice cream Tub, what does the Team think?.

Len.

SteamboatPhil · « **Reply #54 on:** March 23, 2020, 05:07:02 pm »

Now we no why its taking Martin so long.....so what flavour was it Martin...

Martin [Admin] · « **Reply #55 on:** March 23, 2020, 05:07:38 pm »

Oh yeah!

Might have saved myself a lot of bother!

SteamboatPhil · « **Reply #56 on:** March 23, 2020, 05:25:17 pm »

Oooo this is it< the next mayhem weekend challenge........Martins ice cream tub race.........what do we think

Martin [Admin] · « **Reply #57 on:** March 23, 2020, 06:19:19 pm »

That's pretty good idea!

Tugtower · « **Reply #58 on:** March 24, 2020, 10:55:13 pm »

Been enjoying this build awaiting next part with eager anticipation

Tug Fanatic · « **Reply #59 on:** March 25, 2020, 10:56:12 am »

A useful tip that I saw somewhere was to wrap the hull in a piece of clingfilm/ plastic bag and then you can do whatever ballasting/ layout/ flotation tests that you want to do before finishing the model. Small models have advantages!

Could you fabricate something to avoid using the plastic part? It looks like a tube so it should not be that difficult. Personally I would also be happier if I had not had to search for an adhesive that might/might not work and where I would have doubts every time I put the model in the water.

Martin [Admin] · « **Reply #60 on:** March 25, 2020, 11:06:16 am »

Thanks TF,

I'll try Stabilit first, I've not fount any solid material it doesn't adhere too as yet.... even if it doesn't bond completely, it will provide a secure enough fillet that I can then secure with superglue.

Tug Fanatic · « **Reply #61 on:** March 25, 2020, 11:20:23 am »

Don't forget that seriously abrading the plastic surface where you want the glue to stick never hurt.

Good luck.

Martin [Admin] · « **Reply #62 on:** March 25, 2020, 11:46:55 am »

... and I'm going to cover it with sanitizer hand gel!

Martin [Admin] · « **Reply #63 on:** March 29, 2020, 10:49:23 am »

OK, Part 9 - 'Faffing about with motor alignment'.

I usually like to do this by ear, checking for drive line loading when motor press into mount..... it doesn't go well !
I'm thinking of using a blob of epoxy and letting the motor and mount find it's own alignment.....

Tug Fanatic · « **Reply #64 on:** March 29, 2020, 12:53:24 pm »

As you are using a solid coupling have you considered a large blob of silicone sealant to mount the motor? Easy, lets the motor sit how it wants to and you can easily get the motor out if you need to.

I find it easier to ensure low friction by using a very low voltage where I find any difference in load to be much more obvious.

Tugtower · « **Reply #65 on:** March 29, 2020, 02:08:26 pm »

That shaft unit looks like a very tight fit which maybe the reason why the motor won’t lay flat ( the mount maybe off too)

Personally I would widen the shafts hole in the hull slightly (and elongate it) to allow it to be a looser fit, this will give you wiggle room to get the motor mounted better and the shaft aligned centrally to the rudder more accurately, once in place you can glue down the lot permanently with some epoxy to seal.

Just my 2 cents

Martin [Admin] · « **Reply #66 on:** March 29, 2020, 02:48:29 pm »

Yes I was thinking of the Silicon 'blob' option, but doing it with slow set epoxy.... 'cause that's what I have around at the moment!
( I have a theory that all glues, silicon etc, all stay fluid until a week before they detect you need them! )

The mount just doesn't seem to be at the right angle up/ down as appose to port / starboard.

Subculture · « **Reply #67 on:** March 30, 2020, 12:00:06 pm »

Epoxy won't work in the same way, as it lacks the softness of silicone rubber to absorb vibration.

Martin [Admin] · « **Reply #68 on:** March 30, 2020, 01:44:35 pm »

OK, so I've gone with the silicon sealant ....... only trouble is this silicon takes 24 - 72 hours to set.
Should have checked that beforehand!
Luckily I did remember the the silicon that smells of vinegar, instantly corrodes any metal near by and I removed the motor etc.

Martin [Admin] · « **Reply #69 on:** March 31, 2020, 08:53:12 pm »

Today, finally gluing in the skeg!

Project Counters:
Dropped stuff of the bench = 5. Total =26
Banged my head into camera & lighting gear. Today 4. Total = 17

Martin [Admin] · « **Reply #70 on:** April 01, 2020, 06:15:15 pm »

OK, all glues set.... unfortunately, something must have shifted, while clamping I guess....

Anyway, not too bad, just a quick bit of fettling with a mini drill ( lower the arf end of the motor ) and alignment regained.

Martin [Admin] · « **Reply #71 on:** April 05, 2020, 09:16:04 pm »

Not done much this week... lost a bit of mojo... this duration is going to go on a lot longer than we first thought.....

1. Thanks to NigelW for spinning up a piece for my bench mount clamp tripod, Top Man!

2. Got me fux dremel out and fettled a quick plate for my FZ-200 camera.... well it something!

#

Martin [Admin] · « **Reply #72 on:** April 14, 2020, 05:51:44 pm »

Part 11 - Siliconingin the motor mount - Round 2!

Project Counters:
Dropped stuff on the floor - Today 5. Total 26
Banged my head into camera, lighting gear - Today 4. Total 17
New bits of camera gear just for this project - This week 3. Total, a very expensive 12!

Martin [Admin] · « **Reply #73 on:** April 14, 2020, 06:24:09 pm »

Part 12 - Lower rudder bracket / prop guard thingy!

Project Counters:
Dropped stuff on the floor - Today 2. - Total 28
Personal Injury's 2 - Total 6
Banged my head into camera, lighting gear - Today 5. - Total 23
New bits of camera gear just for this project - This week 4.
Total, a very expensive 16!

Tug Fanatic · « **Reply #74 on:** April 15, 2020, 09:11:03 am »

Martin

The structure of these kits seems very complicated and must make the already limited internal space even smaller. I have also asked this question in the Q3 thread to see if there is any difference

What thickness ply do they use for the Q1 kit?

News:

Author Topic: Martin builds the Q1 Mini Logging (Dozer?) Tug (Read 11113 times)