Material suggestion for a small gear?

[kafie1980]

Awesome, keep us posted.

[nadroj]

I used a 6mm reamer on the PLA gear's bore, to match the spindle's diameter.
For a positive drive, I installed a 1.5mm roll pin into the spindle, and put open-ended slots on the gear.
That method also makes it easy to remove and install new gears.
I'll put it on the motorbike tomorrow and, weather permitting, take it for a trial run.

[nadroj]

A little more progress - the drive assembly is installed to the wheel, ready to test.
I have some silicone paste for electrical use, so I used that for lubricating the gears (plastic to metal) as it's greasy stuff.
I'll keep an eye on it in case it melts in use.
The spindle turns when the wheel is spun. That in itself is promising, as I made some guesses for working out the gear's required helix angle.
I've run out of time today, and will report further when I've had a chance to go for a ride.

[nadroj]

Today I took the motorbike for a 50km ride to test the speedo operation.
It works fine, so far.
After some more distance, I'll disassemble the speedo drive gearbox, inspect and report here.

[nadroj]

Weather is getting better for motorbike riding, so I added another 70km on the odometer today.
Total = 120km on the new printed plastic speedo drive gear.
It's functioning well so far.

Jordan