4WD

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I've seen one made out of a 13 amp mains plug.

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That was fun :)
Used to get some odd looks for having a run-of-the-mill household plug sticking out the back of my robot. It did the job but isn't the most reliable method as a large ramming impact can knock it out slightly and disrupt the power flow.
However at the time I was extremely skint (not much has changed right now :() so it was a low-cost solution as I scavenged the parts from the tubs of electrical bits and bobs we had in our cupboard

What about the Type FR30HX Elextronize Controllers? Would they be suitable?

Also, somebody said you can buy Safety links from Technobots, but I've looked and can't find any.

yeh those controllers would be fine again you would need 2

make your own link with the samller deans connectors (most people do this)

http://www.technobots.co.uk/acatalog/Si ... ctors.html

or like me you could use these called denas connectors less hassle and can be more reliable IMO

http://cgi.ebay.co.uk/10-Pairs-Deans-St ... 518d692362

alex

i know this has nothing to do with this topic but will anyone here be a wigan in december?

well, i have been known too use tin foil...but dont just dont :P

i personaly use the anderson connecters, just a personal prefrence but deans work just as well, i just think that if your robot is spazing around in the arena with a 4kg disk, if i were the arena marchal i would want the biggest link possible :P

if you want even more low-tech option go down to your local maplin and buy a couple of tamiya connectors, simple and cheap, and the good news is that its maplin! so you can get some LEDS (mine where £1.50 per ba, i got 2 packs of 20 :) ) and some solder etc etc, also, i was quite supprised to find the mfa motors there, they were £20 and i think they would work well.

you could also get some dpdt switches (double pole double throw) and some servos and make a low cost esc as seen in rexs robot challenge. but that is a bit off topic :P but what im doing atm

@everyone: could i use the dpdt switch style esc in a 4wd system?

jack

yes :proud:

awsome :proud: , il do some testing :mrgreen:

as the 4 wd thing goes , ill be at reading on sunday and ive recetnly finishes a 4 wd drive bot using 2 drill motors and ten quids worth of chain and sprockets from t bots