Model Boat Mayhem

Technical, Techniques, Hints, and Tips => Engineering Techniques and Materials. => Topic started by: tobyker on March 23, 2007, 12:12:23 pm

Title: Drive belts
Post by: tobyker on March 23, 2007, 12:12:23 pm

Does anyone know a source for pulley drive belts? I saw some on paddleducks whch were round section and looked a bit like large O rings. The problem with these things is that you find something in the odds and ends box that just does the trick until it breaks and then you can't find a replacement. I don't want toothesd or flat belts as the pulleys are too expensive, and I'm looking for a quiet reduction drive - I was going to use a planetary gearbox and motor from a battery screwdriver but it really is too noisy, and with a wooden hull for a soundbox it will be even worse.

Title: Re: Drive belts
Post by: Daryl on March 23, 2007, 12:21:31 pm

You could try HPC Gears www.hpcgears.com or Squires tel 01243 842525

Daryl

Title: Re: Drive belts
Post by: BobF on March 23, 2007, 01:36:23 pm

Hi tobyker,

I use the seals from plastic waste water fittings. There are a few sizes available, and once you decide on the size you require, you just by a couple of spares. There was a thread a couple of weeks ago re o rings and quite a lot of sizes were available.

I've never had one break yet, and some are eight years old.

Bob

Title: Re: Drive belts
Post by: chingdevil on March 23, 2007, 01:48:47 pm

Why not try a company like Brammer, they are the biggest supplier of drive belts and "o" rings in the UK to engineering companies. I am pretty sure if you go to one of their trade counters there is not a minimum order. They used to be called BSL.

The other Brian

Title: Re: Drive belts
Post by: rats on March 23, 2007, 02:38:12 pm

http://www.mobilemarinemodels.com/PDF/Running_Gear.pdf

    Mobile Marine Models do drive belts and pulleys

Title: Re: Drive belts
Post by: Colin Bishop on March 23, 2007, 08:59:02 pm

O rings are OK but get the thinnest ones you can for the required diameter and try to keep the setup as circular as possible. The more you pull O rings out of their normal shape the more drag you get and it increases exponentially! I have often used double pulley arrangements with success, that way you can use thinner cross section belts as you have two of them taking the load. Using this method you can even get away with elastic bands if the model isn't too big.

Title: Re: Drive belts
Post by: norry on April 05, 2007, 07:59:32 pm

...Hi Guys...

I was looking fot "O" Rings recently to use as drive belts for the winch on my tug...

The Chandlers at my local Marina was the best place for a good selection of "O" rings....

They had them in all shapes & sizes...Also you can buy a mixed pack at B & Q...

 I Hope this helps...All The Best...Norry...