Drills

you mean one mount on the D section of the gearbox and one mount over the motor?

if so then yes. ive done the one end support and it worked less then well.

Ive run a single mounting point on the gearboxes in my old spinner with 9.6v drill motors on 12v and Ive never broken a gearbox in it in 2 years. I believe it allows a bit of flex and movement which takes a lot of stress off the gearbox itself.

Glen has his supported both sides and has broken over 10 gearbox in his life span ;) But plenty of other robots have done the same thing and never broken any ie: KO, Stainless Steel Rat, Mouse Wedge.

Its all up to you basically :)

In all our kits weve never had a problem. they are mounted over the gearbox. they are also avalible for purchase

anybody got any dimensions of the challenge 18v or 14.4v drills for my cad drawings?

Question:

I cant attach wheels directly to drill motors, but I can attach them to a drill chuck output (the small motors used on the Zeobots have mini gearboxs in them and they seem to do fine).

I take the left hand screw out of the center of the chuck and unscrew the chuck, then thread the wheels directly onto the gearbox of the drill motors. 95% of the aussie bots follow this method.

We found the easiest way was to mill down the chuck and screw it back onto the motor shaft. we then pushed the wheel over the milled chuck and screwed through the wheel into the chuck. We found this to be the most practical solution at the time. I agree this may not be the best way to do it but we found it ok.
Obviously it is heavier than screwing the wheel straight to the motor shaft but as the center of the wheels i had where larger than the motor shaft this seemed to be a good option.

Just a word of warning, if you are looking at using the motors in the zeobots then make sure that axle for the wheel is supported on BOTH sides of the wheel. Otherwise the result will be broken gearboxes every fight!

I have been wondering if i could solder on a crimp spade onto the end of my drill motor tabs

Heres a link of what i mean
http://www.teamrollingthunder.com/Featherweight/Xi_2_0/June_2__2005/june_2__2005.htmlhttp://www.teamrollingthunder.com/Fe...5/june_2__2005 .html

Why wouldnt you Alistair? The only thing is you will need to get the appropriate sized crimp. I personally just solder the wire to the tab.