sprocketing
Elite HDF Member
Joined: Jul 2007
Posts: 4,749
Likes: 16
From: sand mountain Alabama
By going 30/70 you will lose some cruising speeds but I doubt you will hurt the top end speed. Most engines will not red line in 5th and I have never run one that would hit the limiter in 6th.
I Personally I don't care for a 30 tooth crank gear. I prefer to have my compensator sprocket.
I did a reduction in the first 3 gears but I did it through the transmission. Kinda costly I may add.
I Personally I don't care for a 30 tooth crank gear. I prefer to have my compensator sprocket.
I did a reduction in the first 3 gears but I did it through the transmission. Kinda costly I may add.
Road Master
Joined: Aug 2012
Posts: 854
Likes: 20
From: CT
By going 30/70 you will lose some cruising speeds but I doubt you will hurt the top end speed. Most engines will not red line in 5th and I have never run one that would hit the limiter in 6th.
I Personally I don't care for a 30 tooth crank gear. I prefer to have my compensator sprocket.
I did a reduction in the first 3 gears but I did it through the transmission. Kinda costly I may add.
I Personally I don't care for a 30 tooth crank gear. I prefer to have my compensator sprocket.
I did a reduction in the first 3 gears but I did it through the transmission. Kinda costly I may add.
HDF Community Team
Joined: Jun 2008
Posts: 4,761
Likes: 953
From: Out West
I agree, why have a Harley with enough gear for 170mph if it'll never make the power to get there? I put mine at 3.17:1. 25/55 w/chain and +3 on clutch basket. On the dyno it hits 150 in 6th at about 6900rpm. I'm pretty confident it'll do it on the street. I set the limiter to 7100 and went for it one time, shift light came on at 6700 but i was coming up on cars quickly and had to shut it down, it was still pulling pretty good though.
Cruiser
Joined: May 2016
Posts: 134
Likes: 13
From: Boston
I had a 30t Andrews in the front and a 68t sportster pulley and a spacer in the rear on my Fat Bob. Stock belt fit fine. I switched to chain drive since then.
Last edited by 619DYNA619; Jun 8, 2017 at 08:19 AM.
2nd Gear
Joined: Jun 2017
Posts: 6
Likes: 0
From: New South Wales
Just looking to the naked eye without measuring I'm thinking about 3/8 roughly.
Cruiser
Joined: May 2016
Posts: 134
Likes: 13
From: Boston
i dont remember off the top of my head but if I remember I'll measure when I get home tonight.
2nd Gear
Joined: Jun 2017
Posts: 6
Likes: 0
From: New South Wales
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Tourer
Joined: Sep 2014
Posts: 369
Likes: 31
From: Marlton, NJ
https://www.hdforums.com/forum/dyna-glide-models/1004601-68t-rear-pulley-swap.html
Ultimate HDF Member
Joined: Apr 2008
Posts: 5,384
Likes: 12
From: Out on Deranged
Three more things:
Front sprockets usually go two teeth at a time
What you gain on take-off you loose on the top end
THERE IS NO REPLACEMENT FOR DISPLACEMENT
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nhb006
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Jun 15, 2012 05:39 PM