SIMSON S51 ELECTRONIC / ENGINE DISASSEMBLY / TIME-LAPSE / PART 1

Simson s51 electronic engine disassembly and inspection
I am already working on the second part where I will assemble the engine.
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[@thecommuter6515]

Hello my friend do you know how i can increase its volume from 50cc to 70cc or more without chnging the carter and the stock crankshaft?Is a 70cc piston cylinder compatible with stock 44mm hub?