C90 engine is Direct swap for atc70

[benb1984]

just swaped out the 70 for a 90 outta an old scooter, just had to change the header pipe and sort out the wiring.. i couldnt make either the twist throtle off the scooter, or the thumb throtel off the trike work, so atm i have a push bike brake lever wich worked perfectly, i moved the kick start around so it touches the front foot peg, its not in the way, and most the time, i can start it pretty easy by pulling it up. had problems at first so decided to bump start it, my mate pushed me down the driveway, i stomped it into first and it revved right up, back fliped out on to the road and spun round till the tank fell off, so we adjusted the throtel cable and its been fine since.. im still a bit sore but ill be fine.. time to start lookin for a 110 now.. i was a little dissapointed with how it went, i was expecting more power. dosnt like 3rd gear unless u really moving, i think it just needs some tweaking to be more responsive, and 1 back tyre is bloody stuffed, so fixing that should help it go a bit better too..
letuce know what you think...

the grinder in the pics was only used to help remove bits from the scooter.. i didnt have to make or modify anything...

[atc500x]

Those 90cc engine are not very powerfull,like in the st90,I think the st90 motor bolt in the atc70 too since st90 and ct70 use the same frame

[greenhuman]

Those 90cc engine are not very powerfull,like in the st90,I think the st90 motor bolt in the atc70 too since st90 and ct70 use the same frame

The ST90 will not bolt into an ATC70. The engine bolt pattern is completely different and uses three mounting bolts. The CT and ST frames are different also.

[chavo80]

try useing a pit bike motor>most of them bolt in with no mods>gl