Decent motors

BonX uses spur gears, single stage 1:6 reduction speed 900, 23 mph and enough power to sit on and drive around.

quote:

how do you gear a motor? this is probably a rookie question but i have never had to do it!

Alex, Jamies post above is really useful, I must say. :)

Jamie,

Pain In The Asp is a real hybrid of drive systems,
First, Astroflight C40 motors driving through a Team Whyachi TWA40 3 stage gearbox @ 7.78:1 then a set of Mod 1.25HD spur gears @ 2.2:1to the rear axel (overall ratio 17.11:1)
From rear axel to center and front axels I use 2 sets of 5mm pitch X 15mm wide HTD timing belts and pullies @1:1

Not light, but incredibly strong and reliable.

And bent axel shafts :crazy:

Mr Stu

I would like to see you try to bend the new ones! :wink:

Good point actually Geoff, I remembered the Astros went through the gearboxes first but forgot that you used spur gears to take the drive to the rear wheels. Timing belts were the most obvious parts to see in pictures etc which is probably why I forgot about the rest! :)

Still, it is a very sexy 6WD machine...........when its got all six wheels attached that is :wink:

thats been sorted.
today in fact :)

if i were to go for the chains and sprockets, what size stuff would i need?

alex

Alex I use the 6mm pitch chain and sprockets from Technobots. Have a look at DB5 next time you get a chance, I use a mix of spur gears and chains.