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Old 06-14-2013, 07:56 AM
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Russ McClay Russ McClay is offline
Motorized Bicycle Senior Member
Join Date: Jan 2013
Location: Taipei
Posts: 85
Default Re: She Just Ain't Climbing Like She Used To - Standard China Girl 66cc

Hey biknut --

Originally Posted by biknut View Post
Has the weather changed since you first got it running? Have you done any jetting, or are you running the stock jet? Have you changed the oil ratio over time? Just fyi as you change your oil ratio, you need to change your jetting to compensate.

Less oil = richer

Stock jetting is usually on the rich side.

Since it sounds like your motor is in good shape, if all else fails try an expansion chamber. The one from SBP works well.
The weather has changed...more humidity and higher temperatures. No jetting. Stock jet. Oil ratio has been scientifically measured...32:1 for the last 600 miles. I recently dropped the oil mix to 36:1. But that was after I noticed the loss of power.

Yeah, I am definitely going to go for the SBP pipe! Due to shipping I'll have to pay as much for it as I did the whole motor kit! Not SBP's problem. And I should plug them further. I bought their fuel valve, air cleaner and a couple of other things and they were shipped promptly to Taiwan. I had one simple tech question. They answered right away. SBP is sick! lol

Cheers for the feedback!
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