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  1. S

    50cc to 70cc question

    Hey, decided to upgrade the 50 to a 70 using the ooracing kit....the 50 is just too slow to accelerate safely. Got the engine out, but all the tutorials I can find on youtube are for the GY6 engine which is a little different. There's a access hatch for the cam timing, as below. My question...
  2. S

    ACE 50 - surely not this slow?

    Hi there, first post, but been reading on here for a while. I've just got a Skyteam ACE 50 for my son, but on test ride it's desperately slow. I don't mean 30mph slow - I mean it's struggling to get above 15mph on the flat! The bike just starts to die if the throttle gets anywhere near fully...
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