If you drive with a 17th front sprocket, If we say you drive in 60 mph with the 16, you can drive about 65 mph with the same rpm with the 17th sprocket. Aprox.
All depends on, whether your engine can pull it, whats your setup and what rear sprocket you got.
So say if your engine is on it's way out or low compression they you may struggle. If you've got a DEP system or similar you may find that you have gained the extra torque necessary to pull that sort of load. And if you've got a stupidly large/small rear sprocket you may get a different speed.
Right, I got a very tired '94 DTR with gutted front pipe and DEP tail pipe. When the the PV was pinned open it had 16/57 sprockets and was a pain in the arse to ride - first gear was a waste of time. So, I chucked a 17 on the front and this made first gear a little longer and so it was easier to ride. At that time I was just riding off road so not much over 30-40 mph and defo not in top 2 gears. Since then I've been riding on the road a bit and noticed it struggles in the higher gears if the revs drop below 7g. I fitted a servo to the PV which helped with the power delivery but it still struggles in the higher gears. I am assuming at the moment it's more to do with the engine than the gearing - I plan to do a top end rebuild and rebore at some point, hopefully that'll sort it. I ride mainly on green lanes and only really ride on the roads between lanes so it's not too much of a problem. Like Gincat said, a sprockets only a fiver so buy a couple of different ones and try them out.
iv been running 19-55 and its on when ur up and runnin but not suited to low speeds lol
so im back to 17-57 now and its alot better alll round, engines tired nah just accumalating all top end rebuild parts at mo so will be doing it soon get her back to full hp
lol yeah grant i had shorter gearing which shagged my fúcking piston i was on a 12 tooth with the 520 conversion with red 520 mx chain lol accelerated like foooooock but was screaming it's breasts off at 60+ Have stock gearing now, love it, i get the best of both worlds and power is more so all around the rev range, + anyway for traffic light grand prix doesnt matter about gearing just feather the cluth lad
