Re: Motors - Recomandation + Info about me [TANKS]

[Amir Tahvildaran <adt22-at-drexel.edu>]

Welcome Martin,
I think 40kg is usually the lower limit for a tank, I'm not sure what 
the lightest tank is but I'd guess not less than 80lbs.
Instead of the EV warriors some people have used 350 watt scooter motors 
or the EV-X motors which are cheap, but not quite as powerful it seems.
EV-X: 
http://www.surpluscenter.com/item.asp?UID=2006110510024715&catname=&qty=1&item=10-1646
background: http://www.rctankcombat.com/archive/2005-02/msg00156.html

For your first motor question (450 watt from ebay), what is a roller 
clutch? Does this just allow it to spin one way? What would its 
advantage be in battling - or is it just a bicycle motor?

When looking for motors, this has been the rule for many, after 
reduction you want to have something close to this.

http://www.rctankcombat.com/archive/2005-12/msg00263.html
> In several earlier postings, I recommended the Rule of Fours.
> 4 inch DIA drive sprockets
> 400 rpm at each drive sprocket
> 400 in.lbf torque at each sprocket
> 4.7 mph with sufficient torque for skid steer
There are some battlebot guys that just joined, they might have comments 
on the other motors you listed.

Good luck,
Amir


Martin A.M. wrote:
>
> Hello.
>
> My name is Martin and I live in Norway.
>
> I am new here, but I am not new to RC stuff.
>
> My background is from RC Planes (GLOW) and El. Cars. (Competition and 
> drifting), but I have no experience in powerful electrical motors 
> which are going to power a 15-40kg tank. So I need help…
>
> I need to buy motors for my future battle tank. There are no battles 
> in Norway (as far I know) but I want to do it for my hobby.
>
> Unfortunately I can’t buy Motors in Norway, as Norway is a very bad 
> country to find such things like pars for battle bots, RC tanks and so on…
>
> I am planning to build German Leopard 2 A6 tank witch is one of the 
> best tanks in the world right now, or a German Tiger 1 tank, or Polish 
> T34 (build in Russia)… Leo is my first choice.
>
> After reading mailing list, I can’t really find proper info about 
> witch motor to use.
>
> So I am posting few motors and can you guys tell me if they can be 
> used for my tank (Scale 1:6 so the weight will be pretty heavy)..
>
> 1 motor: 450 Watt - 24 Volt Electric Scooter Motor With Built in 
> Roller Clutch XyD-6B, 24 Volt, 450 Watt, 2300 R/Min , 28 Amp -< Ebay 
> item#: 110009588402
>
> 2 motor: NPC-41250 form http://www.robotmarketplace.com/
>
> 3 motor: S28-150 Magmotor from http://www.robotmarketplace.com/
>
> 4 motor: NPC-02446 from http://www.robotmarketplace.com/
>
> 5 motor: Astroflight Cobalt 940 Motor from 
> http://www.robotmarketplace.com/
>
> 6 motor: Any other motors? Which and where to buy?
>
> Thank you for all help.
>
> Martin
>