Thread: Efficient motor
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Old 03-17-2019, 10:02 AM   #2 (permalink)
Daschicken
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Join Date: May 2012
Location: Georgia
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Cibbie - '88 Honda CBR 250R
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90 day: 55.13 mpg (US)

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Quote:
Originally Posted by Spaghetti Man View Post
I was thinking of buying a particular 125cc motorcycle although this motorcycle turned out to have bad fuel economy and I figure it is due to the push rod motor that was used.

I want to learn more about what features enable a motor to be more efficient so I can make an informed decision.

Is there information available can make this possible?
Well, some basic things you can look for are an undersquare engine, fuel injection, and a higher compression ratio. Sounds like whatever bike you were looking at has a really old engine design. Even the 1960s Honda 50 had an overhead cam. If you end up getting a bike with a carb, make sure the carb is tuned right and not just dumping fuel. You should be able to achieve great fuel economy even with a carb.
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Last edited by Daschicken; 03-17-2019 at 10:08 AM..
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