FLH gearing
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Stellar HDF Member
Joined: Mar 2017
Posts: 2,591
Likes: 2,168
From: australia
FLH gearing
There is a lot of info out there on this forum and others so i thought i would post my limited experience.
bike is an 82 flh, stock, cept for the S&S super E.
Originally the set up was OEM 22 transmission 51 rear wheel. As was stated before on here, the bike is buzzy with this ratio and the motor seems like its always trying hard as well as stuff cracks..... most, if not all my miles are done out in the countryside. So i've replaced the 51 rear for a 49 sprocket.With this set up the motor seems so much more relaxed and a lot smoother and less vibes at 65mph and still has plenty left in it for overtaking etc .....just seems to be a better choice for me.......just my 0.02c worth
bike is an 82 flh, stock, cept for the S&S super E.
Originally the set up was OEM 22 transmission 51 rear wheel. As was stated before on here, the bike is buzzy with this ratio and the motor seems like its always trying hard as well as stuff cracks..... most, if not all my miles are done out in the countryside. So i've replaced the 51 rear for a 49 sprocket.With this set up the motor seems so much more relaxed and a lot smoother and less vibes at 65mph and still has plenty left in it for overtaking etc .....just seems to be a better choice for me.......just my 0.02c worth
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
There is a lot of info out there on this forum and others so i thought i would post my limited experience.
bike is an 82 flh, stock, cept for the S&S super E.
Originally the set up was OEM 22 transmission 51 rear wheel. As was stated before on here, the bike is buzzy with this ratio and the motor seems like its always trying hard as well as stuff cracks..... most, if not all my miles are done out in the countryside. So i've replaced the 51 rear for a 49 sprocket.With this set up the motor seems so much more relaxed and a lot smoother and less vibes at 65mph and still has plenty left in it for overtaking etc .....just seems to be a better choice for me.......just my 0.02c worth
bike is an 82 flh, stock, cept for the S&S super E.
Originally the set up was OEM 22 transmission 51 rear wheel. As was stated before on here, the bike is buzzy with this ratio and the motor seems like its always trying hard as well as stuff cracks..... most, if not all my miles are done out in the countryside. So i've replaced the 51 rear for a 49 sprocket.With this set up the motor seems so much more relaxed and a lot smoother and less vibes at 65mph and still has plenty left in it for overtaking etc .....just seems to be a better choice for me.......just my 0.02c worth
Road Captain
Joined: Sep 2018
Posts: 547
Likes: 383
From: Phoenix
Old Mago, not trying to steal your thread, but since you guys are on the subject I have a question maybe one of you could answer. I have a 75 FLH completely stock gearing with a 1200 Motor except for the S&S Super E Carb, Would a 1200 motor be enough power if I switched to a 23/47 or 23/46? 
Club Member
Joined: Mar 2009
Posts: 66,115
Likes: 51,405
From: Niles Canyon Ca.
Old Mago, not trying to steal your thread, but since you guys are on the subject I have a question maybe one of you could answer. I have a 75 FLH completely stock gearing with a 1200 Motor except for the S&S Super E Carb, Would a 1200 motor be enough power if I switched to a 23/47 or 23/46?
Club Member
Joined: Mar 2009
Posts: 66,115
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From: Niles Canyon Ca.
Lived in flatland country those years, needed all the legs I could ring out of it. 
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Road Captain
Joined: Sep 2018
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From: Phoenix
Me too.
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Seasoned HDF Member
Joined: Dec 2010
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From: Coromandel Peninsula New Zealand
Got mine from Drag Specialties.
Club Member
Joined: Mar 2009
Posts: 66,115
Likes: 51,405
From: Niles Canyon Ca.
Problem I ran into most often was out of stock. Shipping might be tough but you might want to hit BMI Karts website and check out the vintage section, can find screaming deals on odd stuff for the old bikes, new old stock like Dixie and Superior goodies, RPLS rod sets as low as $39 us, gaskets, all kinds of stuff.
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