RC Rescue Boat built from Styrofoam

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Bernd:
Spent last weekend up at the Islands. The Poker Runs America had it's poker run on Sat. Lot's of noise.

Ya, I know were's the video's. Between the wife and I we only have one digital and she was using it, after all it is her's. :D

Anyway, I've had one of thos "Ah ha" moments. I discovered why I'm so slow in getting this boat in the water. Here's why. I had already seen the finished boat in my mind. All nice looking and everything. Everybody :bow: to me to tell me how nice it looked. Then it hit me. This boat is supposed to be functional, not pretty. Once I got that out of my head I made some progress. And I'm here to tell you what I did. May not be much but it'll have to do for now. Besides I'm starting to hurt where Don keeps :poke: me. :lol:

So here's what got done.

I had origanlly made the screws that hold the prop on out of aluminum and have a 5-40 thread on it. Quite small. While starting up one motor the screw self tighten to the point it sheared off. So I made a new one from some printer shafting and added a brass washer.

I finally came up with a platform to hold the motor's on. The tie wraps are temporary.

Here they are both mounted. Now I can start thinking about the air and water rudder's.

As I had stated the motors came from one of those kid's Battery powered vehicles. Here's what the harness looks like. Now all I need to do is lenghten some of the wires.

So I've made some progress. If the wife finds out I'm not working on the house I could be in big trouble. But I'll never tell, she's on vacation at the cottage. Maybe tomorrow I will do a bit to look like I've been working on the house, NOT. :ddb:

Bernd

dsquire:
Bernd

Looking good. I promise that I won't kick you any more for a while in order to let you heal so that you can give this your full undivided attention. I have noticed a couple of other little references in a few of your other posts but I thought I would lay off picking on you for a while. I just had to say that so you didn't think that I didn't care any more. :lol: :lol: :lol:

I just hope that you don't have to use this to rescue your other rescue boat. :lol: :lol: :lol:

Cheers :beer:

Don

Bernd:
Well with spring just around the corner I thought I'd better get busy and finish my air powered rescue boat. :lol:

I was going over some of my "round-tuit" list and found I need to get this project finished this year before the boating season starts up at the River. It's only 4 months away before the water gets turned on in the camp.

So with out further long winded explanations I start with some pictures I took back in September.

I already had the wooded platform screwed to the frame. Now the motors needed to get mounted to the platforms. That was done by making a couple of wooden cradles for each motor and gluing them on to the platform.

Next the motors needed to be strapped to the cradles. I used a piece of copper wire to determine the length of brass rod I would need.

A pic without the motor.

Next a piece of brass rod was cut to length and thread 2-56 at both ends.

The center line of both the brass rod and pipe were determined and marked.

The brass rod was lined up and clamped.

It was then bent into a "U" shape around the pipe.

The motor was mounted and the rod checked for fit.

A piece of aluminum was added so the nuts wouldn't be pulled through the wood when tightened.

That's were the boat stands now. It will need to get some holes and dents filled in with some auto body puty and then it will be covered with fiberglass cloth. Might even get a paint job. ::)

I still need to buy a radio for it and work out the steering of the rudders. I've also found an electronic drive that I'm going to use for controling the motors.

That's it for now.

Bernd

Bogstandard:
Bernd,

I don'r want to piddle on your parade at such a late stage, as you are getting on so well with it.

It was mentioned very early on in the post about the power of your motors.

I have seen a lot of variations of your design over the years, all geared towards being a rescue boat, and very few have succeeded, mainly because they were grossly underpowered, as I think yours will be.

You can very easily get into a catch 22 situation, in fact, I think you are already in it. The motors you have will be lucky if it actually moves the rescue boat at all, mainly due to your battery weight. So you then go for larger motors, which then require heavier batteries to give you the amps to run and for duration to actually rescue something - catch 22.

I would suggest you have a word with Peter (HS93). He is a big fan of brushless motors, whereas it is a little after my time, I am still stuck with your 'old fashioned' motor technology, and I personally think that is the way you need to go to give you a lot more power without the gain in weight.

Just a suggestion

Bogs

HS93:
If you want any info let me know , you will find it a lot sheaper than brushed and good deal more power and much lighter. the motors you have will never push it with a dead boat in as they always tend to try and go sidways in jaws type recue boats.

Peter

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