Topic: WW2 Armed River Patrol Dingy (Read 6255 times)

U-33 · « **on:** November 18, 2014, 12:04:20 pm »

The hull for my winter project (not a Sturmboote) has just arrived. Huge thanks to Debbie and Andy at Models By Design, it's a cracking moulding, and has a little more room than the Long Tail boat...in fact, the Long Tail fits inside it nicely.

I think I'll have fun with this...but I have an idea that the outboard isn't going to be big enough

I'm thinking an inboard motor may be needed.

Rich

hmsantrim · « **Reply #1 on:** November 18, 2014, 12:50:13 pm »

Hi Rich.
saw the other half of that here mein herr.

http://www.ebay.de/itm/Sturmboot-m-schwerem-MG-u-Munitionskasten-L-36cm-B-9cm-H-5cm-no-Schlauchboot-/281496587669?pt=RC_Modellbau&hash=item418a810d95

have to do it the same as the atlantic 21 RNLI where the outboards were just esthetic.
You`r not expecting that row boat hull to plane are ya

Frank

U-33 · « **Reply #2 on:** November 18, 2014, 01:06:35 pm »

Danke, Herr Frank...

Plane? It'll be out of the water like an offshore racer by the time I'm through with it!

''Rambo'' George is checking out the firepower as we speak...

Rich

hmsantrim · « **Reply #3 on:** November 18, 2014, 03:55:26 pm »

Hi Rich.
if you want to have it out of the wasser all you need is Brünnhilde in the stern.

Frank

U-33 · « **Reply #4 on:** November 18, 2014, 03:58:04 pm »

Gawden Bennett, Frank...if she got in the boat, the boat would get out of the lake! Wouldn't need heavy artillery....

Rich

Klunk · « **Reply #5 on:** November 18, 2014, 08:07:39 pm »

stick this in it..this would shift it

http://www.westbourne-model.co.uk/acatalog/Graupner_GTX_820_Brushless_Model_Outboard_For_Model_Boats.html

U-33 · « **Reply #6 on:** November 19, 2014, 09:12:49 am »

It's not the power I'm lacking, they all seem to be too short. For instance, the ones I have are nowhere near the water level when hung on the transom. I was thinking of using one as a rudder, but without major surgery to the motor, that won't work.

Rich

slug · « **Reply #7 on:** November 19, 2014, 09:46:41 am »

how about a aqua craft ep1 outboard if you can find one...regards tony

malcolmfrary · « **Reply #8 on:** November 19, 2014, 10:01:52 am »

I did see, many years ago, a magazine article of a mini speedboat. The writer had used a conventional inboard, but had disguised the steering servo as an outboard. The servo horn was fixed to the transom, the servo was the swiveling part, and had the rudder attached to it.

U-33 · « **Reply #9 on:** November 19, 2014, 10:17:41 am »

I'm thinking of lowering the transom a bit, but I'm not sure yet...when I built my little fishing dingy many moons ago I did that, and it worked fine...until I went astern. Then the water tended to flood over the transom, same problem as the Long Tail suffers from.

Failing that, I'll sit and fathom out how to build a transom mounted rudder, along the lines of those fancy open steam launches...that may well be an easier way out.

Rich

hmsantrim · « **Reply #10 on:** November 19, 2014, 12:22:29 pm »

Hi Rich.
what hight is the transom I hae an O/B motor its 6in long. From the top of the mounting plate to the base its 3in long and from the bottom of the tiller arm its 3.25in. I am just making to a pack to run it on 7.2v
Frank
photo PICT06532_zpsf9899f15.jpg height=580

photo PICT06532_zpsf9899f15.jpg height=580

photo PICT0654_zps341e579e.jpg height=580

U-33 · « **Reply #11 on:** November 19, 2014, 12:52:27 pm »

That's about 1/2" shorter that the ones I have, Frank...shame.

I think I'll be going with a conventional rudder set up, with a bit of luck and a following wind, I can squeeze one in the space available. It'll mean having a disc on the shaft as there's not room for a conventional tiller arm, but that's not a problem.
Trying to hide everything in an open boat is certainly fun and games...I've just ordered 1000 x 7" wooden coffee stirrers to make the floorboards, so that'll give me room to hide servo wires, rudder wires, etc. I had fun hiding everything in the Long Tail boat, I thought in a hull this size I'd be laughing...how wrong can you be.

Rich

ballastanksian · « **Reply #12 on:** November 19, 2014, 10:27:00 pm »

Rambo's Machinergewehr will need quite a few ammo tins to sate it's appetite so perhaps a pile of them could hide the innards?

U-33 · « **Reply #13 on:** November 20, 2014, 08:36:14 am »

The plan is to follow the way I did the Long Tail...the front locker will house the battery, rx and the esc, wiring to the motor and the rudder servo will run under the floorboards, it's out of sight and out of the way there.

I've managed to get the motor and the rudder servo installed, they will be hidden under a wooden engine cover...I'll take some pics later on.

I bought some large fish boxes once, but I can't remember where I got them, they would be ideal for ammo boxes.

Rich

U-33 · « **Reply #14 on:** November 20, 2014, 09:39:24 am »

Pics as promised...Rambo insisted on assisting with the servo installation.

Rich

derekwarner · « **Reply #15 on:** November 20, 2014, 12:23:07 pm »

Rich....that prop looks pretty small in both diameter & pitch for the hull cavity fairing & lines as provided

..... Derek

U-33 · « **Reply #16 on:** November 20, 2014, 01:26:36 pm »

Really? It's 40mm diameter, if I go much more I'll be overloading the motor...it's not meant to be a fast boat by any means, more the sort of thing that a couple of guys would use for pottering along small rivers looking for signs of enemy positions, that sort of thing. The only time the throttle would be opened up would be if they were spotted and found themselves outgunned.

Rich

ballastanksian · « **Reply #17 on:** November 20, 2014, 08:02:28 pm »

If it goes too fast, it will put Rambo's aim off! Is that flexible sealant you used and is it over anything like epoxy resin?

U-33 · « **Reply #18 on:** November 20, 2014, 08:45:02 pm »

I only had a drop of epoxy left, so I used that to secure the rudder tube and the prop tube...the white stuff you can see around the motor mount area is the infamous ''Sticks Like S**t''. It goes on like silicone sealant, but dries hard. It does exactly what it says on the tin...although it can be removed with a sharp knife and a dry finger tip if needs be. It's brilliant stuff.

Rich

john44 · « **Reply #19 on:** November 21, 2014, 11:53:23 am »

Hi Rich, Rambo looks like he has his cycling helmet on

you could design a peddalo
For your next project. Watching this one with interest.

John

U-33 · « **Reply #20 on:** November 21, 2014, 12:00:07 pm »

That's his cool looking new hairstyle, John...

Just waiting now on materials arriving, I've run out of styrene sheet for the forward locker and the engine cover box...once they arrive I can crack on. Rambo now has a new crew member, he's undergoing training on how to stand in the stern whilst hanging onto the rudder tiller arm without falling overboard. Been there, done that...

Rich

ballastanksian · « **Reply #21 on:** November 21, 2014, 02:18:28 pm »

I will look out for it. Taa for the tip.

U-33 · « **Reply #22 on:** November 22, 2014, 04:20:40 pm »

The rest of the volunteer crew signed on today, Rambo is briefing them on the patrol areas etc, as I type. (eight and a half quid from eBay)

I'm not happy with the motor mount, so first job tomorrow is to change it. I think I'll spray the hull before I go much further too, especially the inside.

Rich

BailingBen · « **Reply #23 on:** January 05, 2015, 12:14:51 am »

Did you ever finish this model richard?

may be abit late to chime in but engine wise , drop the back and do what they do n motor boats to avoid the stern flooding , heres one i made earlier:

even if this is too late for this boat may help in the future....

kk

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Author Topic: WW2 Armed River Patrol Dingy (Read 6255 times)