Sachs won't hunt

Troy Elizares /
This single post is part of a larger thread. Start from the top or view this post in context.

Here is the build:

Prima G3

Sachs 505/1D rebuilt bottom end, case matched ports

70cc Athena Kit

Flipped 15mm intake, 16mm PHBG 66 main jet (4 stroking a bit)

Treats CDI

Techno Bullet pipe hacked and welded

The spark is great, the compression is awesome, no air leaks, good fuel flow. The exhaust came with the bike when I purchased it, and the welding job is terrible, so it leaks a little bit.

The bike will not go over about 20, and it takes a long time to get there. The front and rear sprockets both look really small, although I have not counted the teeth.

Could this just be a matter of gearing? Everything else is close to perfect. Any other ideas?

Oh, and I don't want to hear about how I am going to destroy the clutch. Thanks y'all!

This single post is part of a larger thread. Start from the top or view this post in context.

Want to reply to this thread?

We'd love to have you join the discussion, but first you'll need to login (or create an account).