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Old 08-10-2021, 05:26 PM   #4
Working_ZS   Working_ZS is offline
 
Join Date: Aug 2016
Posts: 365
Quote:
Originally Posted by Lukas View Post



Now I see that after changing the cylinder I have to change the maximum RPM to 10500Rpm factory has 11000 moreover I am thinking about changing the gears I am looking for 15t front but I do not know if there is such, by the way this bike had to end up like this it was terribly catalyzed to the cut off

Ouch, damn, ouch!!

That looks like the piston skirt was hitting the crankshaft counterweights, identical to the problem that Choppercharles had with his kit. You can see scrape marks on the bottom edge of both counter weights in the video. There seems to be a severe lack of quality control on these big bore kits - hell, I don't think they are even using the right dimensional specs. They should not be experiencing this kind of catastrophic mechanical interference; this is basic blueprint reading and machining 101.


 
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