Heavyweight motor/gearbox question

[daveimi]

Hello. You know how for building feathers etc. there are motor solutions available such as Gimson's, drill motor gearboxes etc? I wondered if there were similar pre-built options for heavyweights. So far, my ravings have stumbled upon butchering up an electric wheelchair, and on the Robot Market Place I found T-64's which seem to come as an incredibly expensive option.

Does anyone have any other suggestions as to cheap and pre-built locomotion ideas that I can bolt onto a planned heavyweight. Obviously I know with hardly any building skills I'm not going to win anything but fancied a go all the same.

[maddox10]

Re: Heavyweight motor/gearbox question

Wheelchair motors are your best bet then.

Otherwise you're thinking about asking others to build you a set of gearboxes.

And cheap... Depends on motors and used materials.

[plargen]

Re: Heavyweight motor/gearbox question

there are these

http://users.breathe.com/planteng/axles.htm

but you have to buy 2 axles at £60 each and and pay £25 to get them modified

[daveimi]

Re: Heavyweight motor/gearbox question

Struth that websites been going yonks I didn't realise you could still buy off him!!

That's cool, I'll bear him in mind. He always used to seemed a good laugh when they interviewed him on the telly, from Somerset I think?

[blazerbotics]

Re: Heavyweight motor/gearbox question

Almost certain Roger isn't about anymore.

[typhoon_driver]

Re: Heavyweight motor/gearbox question

http://www.robotmarketplace.com/product ... TMODA.html

Not a bad option if you go for the 1hp ampflow motor, $200 a piece is pretty decent value for what you get.

Or you could go down the route of gearing using chain and sprocket. Not too tricky if you use standard bearing blocks and shafts

[daveimi]

Re: Heavyweight motor/gearbox question

That's pretty cool. finding an old wheelchair is the favourite at the minute lol.

[typhoon_driver]

Re: Heavyweight motor/gearbox question

Your other option would be to use a ready made gearbox. Plenty available on ebay.

http://www.ebay.co.uk/itm/Belle-Cement- ... 337f204f5b

http://www.ebay.co.uk/itm/25-1-MCP-4-Ge ... 19c9478c8f

Just search for gearbox in business, office and industrial

[daveimi]

Re: Heavyweight motor/gearbox question

That's cool, I didn't realise gearboxes and premade stuff was as ready available in the bigger sizes like it is.

[Liftoff]

Re: Heavyweight motor/gearbox question

Got something similar but its geared 1:80 so they're probably be a bit too slow. Its not light at about 950gr but at least they're all metal and look sturdy enough.
Bought them for a project which never saw light - but who knows!

[daveimi]

Re: Heavyweight motor/gearbox question

they look like the real mccoy!

[typhoon_driver]

Re: Heavyweight motor/gearbox question

Those ones are available on ebay as well with a selectable ratio

http://www.ebay.co.uk/itm/TNRV050-Input ... 3a66a7954f

[daveimi]

Re: Heavyweight motor/gearbox question

It's sort of dawning on me how on the ball I am gonna have to be building a heavy weight. I was ready put my cash into building a serious featherweight but really fancy a shot at a heavyweight instead lol.

[daveimi]

Re: Heavyweight motor/gearbox question

well...actually the plan originally was build a featherweight from plastic and roberts your mothers brother. But after a crate of hdpe etc and various builds I wasn't happy with the way it flexed. So then I've been building a daft robot out of a roasting dish and bits of angle / steel plate and i've ended up having to buy metal cutting and drilling gear anyway. So now since I've gotten this far, I keep watching the heavy weight stuff on youtube and thinking I want a go at that. Would your advice be build another feather or two first and then have a go or would you advise getting stuck in?

[Ellis]

Re: Heavyweight motor/gearbox question

Have you competed with any of your featherweight efforts? If not, it might be wise to do so, get your sea legs as it were, and decide from there. You may be completely satisfied with the more intense and lighter machines.