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Old 09-12-2019, 10:17 PM
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Default 49cc pocket bike engine hp

Does anyone know about how much power the 49cc two stroke pocket bike engines have? I got one from my uncle a bit ago that needs a bit of work. I was wondering if it is worth fixing it up to put on a bicycle or something.
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Old 09-12-2019, 11:19 PM
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Originally Posted by J.S.@SMS View Post
Does anyone know about how much power the 49cc two stroke pocket bike engines have? I got one from my uncle a bit ago that needs a bit of work. I was wondering if it is worth fixing it up to put on a bicycle or something.
I made a friction drive bicycle with a 39cc weed whacker engine, and it worked quite well. It didn't pull me up hills, but it was a great assist and did make those hills seem easier. 49cc should be a lot better, especially if you use a chain. Mine was only friction drive
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Old 09-13-2019, 04:20 AM
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I am going to use chain. I’m thinking about getting one of those twenty somethin dollar 3:1 reduction boxes, and using the 68t sprocket I have from the pocket bike. Also, I measured the piston, and it has a 44mm big bore kit rather than the stock 40mm. So it’s actually about a 54cc engine.
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