Team MedBots

[mattsdragons]

Ive got a spare set of kart hubs that can fit tyers I have? Also got the tubes and both the tyers and tubes are unused, the hubs are scratched but fine if you are interested? once inflated are 10 inch, same as on Bulldog Breed

[Max]

Sounds good, how do they attach to the shafts coming out my gearbox? Also how much do you want for them? Cheers.

[mattsdragons]

You will have to weld a plate onto the shaft and they will bolt on, message me with an offer

[razerdave]

Ali angle frame? I would suggest a rethink Max. Thor would bend the hell out of that.

[Max]

I was concerned about that after watching the heavyweights at Maidstone!
But I felt I was better having an Ali frame supported by thick armour rather than a steel frame with thin armour. I will weld the steel armour together which should be the main structure with the frame just really being a guide.
And if it gets bent then it gets bent and I'll just re-build the robot- after all that's half the fun! I just want to get this version done so I can test it before going for a re-design as otherwise I would never get anywhere!

[Max]

Hi,
Does anyone know what thread the output shaft is on a dewalt drill motor, I've seen pictures of some with a funny non-threaded shaft but mine seem to be like a normal drill motor but with a different thread.
It seems to be about 12mm but I can't find my vernier or thread guage
Thanks.

[plargen]

Its probably 1/2" UNF

[Max]

It was pretty much 1/2"UNF, the diamter was a bit too small but 1/2"UNF is the closest so I'll go with that.

Also, what kind of rpm do fw full body spinners get? I'm looking into using a friction drive to the edge of the shell (16" diameter) but this means I will get about a 8:1 reduction so trying to find a brushless motor with the right Kv

[Ellis]

I think Little Spinner 4 touches 2k. I don't think many go beyond 3-4k.

If you're running around the rim of a shell, make sure the shell is very strong at the transmission point. If a big horizontal were to smack the shell where the friction wheel is running on the other side you'll have problems.

[Max]

Would it be allowed to have an electromagnet in my fbs featherweight that would switch on just as I hit another robot. It would then stick to the floor for say half a second then it would turn off, this would stop the robot from getting thrown out the arena. Obviously it has certain practicality issues associated with it but theoretically would it be allowed?