64 cc sthil 4 mix 54 straight bar

Au117

New Member
Sep 29, 2016
4
2
3
Champaign il
I have been reading the forum the past 6 months, there is a lot of cool stuff. E mailed msrfan and have been corresponding with him. I sent him some pics of my first bike and he asked me to post it. So here I am. 54 Schwinn straight bar, 64 cc sthil 4 mix, walbro 76a carb, 14.4 to 1 gear ratio and fiberglass tank. It does about 35 to 37 mph. I have sure enjoyed this forum, can't thank msrfan enough.
https://www.youtube.com/watch?v=aomH6rQbx14
 

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msrfan

Well-Known Member
Sep 17, 2010
1,800
96
48
Southern California
Great looking and engineered bike Sean. These little motors scream pretty good and are a blast to ride. I go right along with traffic on most roads. Mine's geared to right about 45mph and after slipping the clutch a bit, doesn't take long to reach top speed.

I'll bet the guys would really appreciate what you do with your other 4Mix motors.
 

Au117

New Member
Sep 29, 2016
4
2
3
Champaign il
Thanks for the nice comment Dale.
As far as engineering goes you are top notch thanks for sharing. I have been messing with the Sthil 4 mix engines for the last couple years and have converted the 32cc and 64cc for rc ww1 aircraft. It took a while to get them to run right but after I figured out how to drive the 2 cycle Walbro carburetor pump off the intake everything fell into place. I like these engines, they're very light weight and just a power house for the size. The videos I'm posting are not bike related but do relate to the 4 mix.
https://www.youtube.com/watch?v=C34dLX9NyTI

https://www.youtube.com/watch?v=K6x3LfZj3gg