pulley change
Ultimate HDF Member
Joined: Jun 2007
Posts: 9,193
Likes: 494
From: Richmond, VA
I was all about swapping my stock 70 rear to a 65 as well. But almost all of the advice and repies were a universal..."don't do it". The bike will just lug on the hyway. Yes, is will spin slower, but most of the folks I spoke with said spinning between 3000 and 3500 on the super slab was better for the motor than lugging it down. So I just bought a chrome cover for the stock sprocket and left it alone. Only you know what will make you happy, but I was just throwing out one more opinion.
Banned
Joined: Oct 2007
Posts: 1,494
Likes: 5
Sorry to hijack. As it is for me now I run 5th gear almost all the time on the freeway and won't shift into 6th until 75 mph and from what I have read most with stock gearing say pretty much the same thing. Those who have gone to the 30T, where do you shift into 6th now and where do you hit the rev limiter in 6th? Is first a blip of the throttle and then to 2nd?
CB
CB
Novice
Joined: Sep 2009
Posts: 15
Likes: 0
You can figure your speed with any gearing with the Big Boyz website calculator. http://www.bigboyzheadporting.com/calculators.htm Plug in your variables then calculate your speed per 1000 rpms. Takes a lot of the guesswork out of it.
Intermediate
Joined: May 2010
Posts: 30
Likes: 0
Do you have a part no. for the 30 tooth front sprocket?I would be interested in hearing what eng.mods. you have done. I have on my Bob 103kit s/e211 cams s/eheavy breather and race tuner,v&h short shots.now have 16,000km and love it
70 tooth is stock on '06 Dyna's
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