From the land of "NO HILLS", Florida

Hi to you' all !! The name and location: Victor from Fort Lauderdale. I done two kits so far, a 70 cc first and a 48 cc, both chinese happy times types. The 70 cc is installed on a old japanese frame with 700 mm tires, bianchi hubs, alex rims (everything salvaged from discarded bikes). Runs excellent after 8 tanks of gas & it takes me to work everyay (everyday it doesn't rain, that is!!). Now the 48...putted together for my brother...starts great but it develops a screeching noise on decceleration and it vibrates a LOT on acceleration at midrange. I will search for solutions in the applicable threads!! Well, i'm sure it will be a pleasure to be part of this community.

Welcome Victor to the forum

Welcome aboard and glad to have you. In a land with no hills a weed whacker 25cc will work wonders. Its just where there are hills like i live that you need the extra punch

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Hello from Gainesville, FL. My 48cc screaches also when I decelerate. No vibrations though.

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Welcome to the forum. Lots of motorize bicycle enthusiasts here. Glad you joined us..............................

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Welcome Neighbor from the Treasure Coast.......

Look at/lube the bearings on the clutch shaft.

Welcome to the place.

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If it ain't broke, and you mess with it long enough, it will be.

thanks for all the "welcomes"...i will work on the clutch bearings this wekend and will post the results. I found two other threads with guys having exact same poblem with 48cc engine. Maybe i a common thing? or he engines are from the same origin? I'll try to find out...thanks for your suggestions!!

DEACON...you're right...a 25 cc would be enough here...actually looking for some parts to convert a 25 cc weedwhacker to install on top of rear wheel wth chain drive to large sprocket...if you know of a universal clutch and gears i will love to do it!! Thanks for any info you may have.

Use a 10 tooth centrifugal clutch for a #41 chain, then buy get a 48-50 T sprocket for the rear wheel.

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If it ain't broke, and you mess with it long enough, it will be.