Deathly Hallows - FW - Alligrater

[Maxamuslead]

ah so you got the 250w ones, have you designed a gear reduction for it ?

[Deathly Hallows]

have you designed a gear reduction for it ?

I am currently thinking about a chain drive, if I can fit a larger sprocket on the motor's drive shaft, I can get a 4 or 5:1 ratio.

http://www.gearsandsprockets.co.uk seem to have lots of options. Double grub screw fix to the wheels axle, counter sunk for extra bite.

I'd fit some kind of tensioning arm/idler to hold it in place.

The big question on the drive for me at the moment - is how to fix the drive shaft to the wheels (from Screwfix). If I want the axle supported at both sides I need a round shaft at both ends, but to fix in the wheel a hex would be best as I was thinking about the thermal insertion method. I don't have a lathe to mill down a hex bar at both ends. Do you know if anyone supplies something like this or have an alternative idea?