well i thought i had stock sprockets but turns out the front was downed to a 15. i want to be able to pull throttle wheelies easier. whats all the rears you guys have to give you more bottom end? do they make a 14T front?

 

i believe 15T front sprocket is the smallest made for a 929/954, cant make them too small because the wear on the chain. i went with a 15/46 combo. lots of low end power.

 

i went 15/45 with a 520 conversion. night and day difference.

 

what chain is on them stock?

 

stock chain is a DID 50VA8C1-108 links. stock gearing is 16/43

 

Yup. It's a DID 530 chain. "5" is the linear pitch (length between roller pins) and "30" is the lateral pitch (width) which is 30/80ths or 3/8". So a 520 conversion is the same linear pitch but a 20/80 or 1/4" width and weighs 2 lbs less (on average) than a 530 chain. Weaker, so if you go 520 conversion you move up to the DID 520ERV race chain since it has higher tensile strength to resist premature chain stretch or potential breakage.

I leave my 929RR track bike (retired AMA/AFM race bike) with 15/45 gearing which is best for me since it works at most tracks we run and this built 929 has decent enough power than I can just roll on to keep up with most students at our schools.

As mentioned above, I would stay away from a 14T on a liter bike. Each tooth you drop up front is about 6% more torque to the rear wheel, where each tooth out back is about 2.5% (approx.). So 15/45 is about 11% more torque at the rear wheel, 15/46 would be about 13.5%, and so on.

 

thanks. that cleared it all up for me. does going to a 520 chain make much of a difference? does it last longer than a 530?

 

Think of a 1/4" tool versus a 3/8" tool. The 3/8" will last longer because it's stronger.

So no, the 520 will not last as long, and depending on a LOT of variables each person's results will vary. Personally I don't suggest a 520 conversion unless the bike is ridden hard in the canyons or on the track. For most street riders, just the gearing change while sticking with 530 pitch chain will be the boost they need.