Hey, my 70cc maxi is running a bit strange. it runs like a dream when all the from the takeoff to top speed but there is an issue where if I drive full throttle for 3-4 min the engine starts to bog down and if i let the throttle go a bit back it picks right up again. it drives 65kmh (40mph) with a 14-36 gearing. to a reading a about 240 F when driving I could be a bit higher. Some more information
70cc airsal
timing at 13 degrees before the top. gap of pointers at 0.35mm
16-36 gearing
blue springs clutch upgrade
15mm bing jet 74 needle at 2. from the bottom
spark plug ngk b4hs but I upgrade to an ngk b6hs
the motor was rebuild under 200km ago
28mm stock pipe ( i know I could get more speed of a different one but I like to keep the esthetic )
i live in scandinavia so the weather im driving in is 50℉ - 65.℉