I don't have experience with the 100cc long case engine but I do have the 80cc short case (147QME) in a TaoTao T3. I dropped it in and not broken in yet I have gotten it to 48mph with my 6'1" 235lbs tail on it.
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'12 Taotao CY50-T3 147QME!!!
'12 Ruckus Clone (stock)
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