Drive ratio upgrade HOW TO: Belt Pulleys, Primary sprockets, improve TQ up to 13%
Thanks
Glen
Besides - by the time you buy all the right tools, a good impact gun, etc, you'd only be shelling out maybe a hundred more to have the dealer do it.
plan ona weekend if you do it, if you don;t hit any hitches. I'm not trying to ward you off of doing it, just set your expectations accordingly.
And *get a HD service manual* for your year / model - you cannot do this job right without one.
Thanks
Glen
I'm guessing the bearing you're referring to is the inner primary bearing behind the clutch. I don't know of any reason to replace it, but I could be wrong. I didn't replace mine when I did the pulley, just was careful when removing and reinstalling the inner primary.
If you don't have access to a fairly powerful 1/2" impact, then maybe I'd consider taking it to a independent shop. Otherwise, its really not that bad of a job in my opinion. I did the job over the course of a couple weeks during the winter, so time wasn't an issue. But I'd bet if I had all the parts ready to go I could easily do it in a day.
Last edited by Reindeer; Jul 6, 2016 at 05:19 PM.
Do note though that:
- a 29T might be pushing the limits of the range of axle adjustment at the rear wheel
- a 29T pulley will wear the belt faster, as it flexes the belt notably more than a 30 or 32T pulley on each revolution.
Jim G
UPDATE:
Got 'er all back together and went for a test run in the evening. Everything seems to be fine. Belt does not seem to rub the mudguard at any height (Shotgun Shock) and belt does NOT track to the right when the bike is rolled backward so, doesn't look like I'll need a spacer, after all; which is a great relief knowing that I won't have to pull the rear tire again, loosen all the bolts already torqued down to 108Nm with thread locker cured and then buy a whole new set of bolts. Phew!
I think I just need to let out the belt adjustment screw about a half turn cause the belt feels a bit tighter than it should at stock height and I can hear that pulley ringing/whining a bit when I let off the throttle.
Torque is excellent. Worth the money paid for the pulley. Might even go with the 30T front pulley sometime soon, but have a pro do the work. I don't think I'm up to the task of pulling the primary myself, nor do I have the tools. Local independent quoted me Ľ30,000 (about $300) for labor, which would be worth it to me. I just bring the pulley and gaskets...
As a side note, I went into the T-Max module before my test ride to adjust speedometer settings for the new pulley. It seems this thing has been set for a 70T pulley this whole time; so, my speedo miles (kms) are likely WAY off, now. I bought this T-Max, 2nd-hand, from a buddy who had it on a Dyna before, but I never thought to go in and change the speedometer settings for my Fatboy with 64T pulley. Thought it would be the same. Never thought about different pulley sizes between different H-D models before reading this thread. I never stop learning from this site, which is why I'm a club member. Invaluable info here for just about all Harley enthusiasts. This particular thread has been a great education in final drive gearing. Thank you LA Dog and everyone else here for your incredible help and input!
Last edited by HoggyMtnBreakdown; Jul 12, 2016 at 04:41 PM.
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