Senior VR Member
Join Date: Jun 2007
Thanked 2 Times in 1 Post
Thanks for the encouragement fella's, I have read (and searched) quite a bit on this site for the last week. It is obvious that I am not the only one that believes this bike needs a taller gear. Judging by the posts, 9 out of the 11 posts are in favor (or interested) in a taller gear. I'd say that's a good reason to go for it.
meldooby, please don't think I am calling you out, however... If you have read my previous posts, you would have found that I do most of my riding above 60MPH (65-66 indicated). At these speeds I have noticed the floorboards, gas tank, both seats, and frame to be more buzzy than I would prefer. I also stated that I have previous experience with a 98' Honda Valkyrie that had absoluetely no buzz on the highway. Anyway, I'm an not interested in winding out my v-twin in fifth, that would be for someone who cruises the Boulevard (no pun intended) on a regular basis.
Also, as stated earlier, I would like a 3:1 rear drive rather than a 2.66, but at this point, the 2.66 is a more viable option... that is, until I start tearing the rear drive down. I also have a theory which is completely unproven, I would have to know the ring and pinion specs of the c50 and c90 to prove/disprove this theory:
The c50's final drive is 3.503, the c90's is 2.66. That is a difference of .837, divided by two (the average) is .419, which gives you a gear of 3.084... very close to 3:1 and darn near right at 3500RPM @65MPH, which is desired. Now the theory... does the c50 and c90 have different ring gears and different pinion gears, or are the pinion gears (on driveshaft) the same on both machines. "If" they are different and the c50 has a lower pinion gear, mated with the c90's taller ring gear, this may solve the problem entirely and produce a 3:1 ratio. Remember this is all speculation at this point, as I have not even looked at a set of gears for these bikes yet.
Sorry for the long post,