Smaller roller for Bikeberry kit?

[Mudflap]

The roller supplied with the Bikeberry kit is about 40mm (1.58") which will probably be too big for the 38cc engine climbing hills. A 1" roller would be better for my intended use. Before I take a grinding wheel to it I'm wondering if anyone makes a smaller one?

 

[Chainlube]

Parts for Friction Drive

Staton-Inc a world class manufacturer of motorized wheelbarrows, motorized bicycles, bike engine kits, gear drive kits since 1984.

www.staton-inc.com

Pick one to fit your bearings.

 

[Mudflap]

The Bikeberry uses a 15mm keyed shaft and 6202 bearings (15mm ID). Looks like all those are 5/8" where they ride in the bearings.

 

[Mudflap]

Got the Bikeberry 38cc kit installed and tested. Definitely some issues with the kit that would make it a challenge for a non mechanic to install successfully. The roller is too big for anything but flat ground with no headwind. Tomorrow I'll see what I can rig up to grind it down to 1".

 

[Mudflap]

I managed to grind the roller down to 1" by clamping the engine support to the workbench and going at it with a 4.5" angle grinder. Wasn't difficult. Will test it tomorrow.

 

[Chainlube]

I managed to grind the roller down to 1" by clamping the engine support to the workbench and going at it with a 4.5" angle grinder. Wasn't difficult. Will test it tomorrow.

Did you just run the motor and move the grinder back and forth?

 

[Mudflap]

No, removed the engine and used the grinder to spin the roller. I could control the speed by grinding at an angle.