Originally Posted by snAKes (Post 5956441)

Do you just press the 20T gear onto the splined shaft? Or try to turn the round hole into a splined hole with an exacto knife?

I'm thinking of just replacing the 20T gear as a replacement for LOSB1709 which is the only gear that has failed on my two Trekkers.

Thanks for posting this!

Originally Posted by cleanandserenesteve (Post 5781228)

First off, thanks to Chevy55 for giving me the parts info and showing me his method, which I basically copied.

Change the 20t hole to 2mm and thickness to 2.5mm to save save yourself some time
Change the 50t hole to 4mm and thickness to 2mm
And make sure to change the material on both to brass unless I want the plastic

The spur and pinion are 10t brass and 55t aluminum. The others are brass at stock size. I wanted to do this ever since I had my Trekkers but didn’t know there were parts available. Anyway, enjoy:

One more set to go for my other Trekker. I progressively drilled the center hole to the size of shaft and then traced the square shape with an exacto knife, and finished it off with jeweler files:

Originally Posted by chevy55 (Post 5812874)

https://shop.kkpmo.com/product_info....--20teeth.html

https://shop.kkpmo.com/product_info....--50teeth.html

Originally Posted by cleanandserenesteve (Post 5812933)

And remember to increase the thickness to 2mm on each. Will save you from having to add shims

Originally Posted by cleanandserenesteve (Post 5814113)

The driveshafts are modded Orlandoo metal upgrades shafts with 3mm inputs on both ends. They are just a hair short for Trekker wheelbase so I used aluminum tubing to increase the length.

Originally Posted by chevy55 (Post 5956514)

Yes just press it on "thumbsup"