Sachs won't hunt

Troy Elizares /

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!

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