Nelluch125 wrote:
Well essentially that's my question. Can I swap out the gears/primary to make that sprint engine feel more like a p125/150 engine?
And if so, what would be a good combo for primary/clutch and gear stack to maximize power (with a kit of course)
absolutely. it'll all swap over.
P125/150 ratios are very similar to sprint-- I think they all share the same 3rd & 4th, and the 1st & 2nd being super close with the exception of like the 125 Arcos having a super deep 1st. I think. maybe. it's late, I dunno.
anyway, the difference is in the primary with the p having 20/68 and the sprint having long legs at 22/67, so basically an upgear. note: *some* early p125 & 150's had 22/67 gearing.
anyway, if I was doing it, I'd just go whole hog and swap everything over to EFL spec and be done with it. stronger gearbox, more choices on better components with tuning options thrown in.
keep the sprint stuff for another build or sell it to offset part of the cost of the new bits.
ETA: forgot you asked about primary combo. I'd probably just chuck in a 21/68 or whatever, knowing that I had the options of 20~24 to put the RPMs where I wanted them. again, for the type of riding I'd be doing with the kit.