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Thread: Lower my rpm

  1. #1
    New Member Liaison Tom's Avatar

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    Lower my rpm

    I was thinking Iíd like to lower my RPM at highway speedís on my 1998 Fatboy.
    what would be the best route , Compensating sprocket. Or transmission pulley. Or final drive pulley on rear wheel.. Looking for advice thank you very much
    May I be "the least in the household of God."...

  2. #2
    Senior Member marc 55's Avatar

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    What are your RPM's at 70 an 80 mph.. Too many people lug their bikes...I have a 6 speed OD an rarely use it...

  3. #3
    New Member Liaison Tom's Avatar

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    I have no RPM gauge ,but I do know that it’s 65 in fifth gear by the feel in my feet on the floorboards it’s very buzzy
    May I be "the least in the household of God."...

  4. #4
    Moderator dawg's Avatar

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    What is on the rear now, is it something like 66T? Changing the rear would probably be the easiest. Could always get a 6 speed gear set, but that would be costly.
    Click here to enlarge I blame soos Click here to enlarge

  5. #5
    New Member Liaison Tom's Avatar

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    Hope economical
    This is what I found per info
    1994 AND UP BIG TWINS 3.15 FINAL GEARING:
    25T COMPENSATING SPROCKET
    36T CLUTCH SHELL BASKET
    32T TRANSMISSION PULLEY
    70T REAR WHEEL SPROCKET
    136T SECONDARY BELT
    May I be "the least in the household of God."...

  6. #6
    Iron Butt smitty901's Avatar

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    That would be a bad idea on your EVO. The buz is normal for a EVO . It will go a lot faster than 65 . Tom the EVO is no power machine when pretty much stock. Gearing it up will cause lugging not good. It has no tach because it just does not need one.
    Dianne Feinstein:
    "All vets are mentally ill in some way and government should prevent them from owning firearms."

  7. #7
    CHARTER MEMBER Jaystronghawk's Avatar

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    I did the Tranny Sprocket on my Sportster forgot now if was more or less teeth but was the easiest to do on a Sportster anyway .. I do remember it dropped the RPM's about 700-800 at 70 MPH and eased off quite a bit on Vibration ..
    2005 Dyna FXD Stage 2/ 2011 Vic Cross Country

  8. #8
    New Member Liaison Tom's Avatar

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    Yes I know the buzz is normal and I like it especially with Arthritis s it wakes me up every morning alines the es my bones. But on the highway for extended time above 60. and of course everybody wants to go 100 miles an hour in cages I’m happy at 70. That’s why I stay in the slow lane I had a 93FLH and I had put a larger transmission sprocket on there. But I was just wondering if there was a better cheaper route. I do want to pull My primary off this winter and just check the shift arm. The bolt l was kind of stripped and I replaced it with a new bolt and I tightened it good but the only way to look at that next to pull the inner primary. You’re right you definitely don’t wanna lug the engine ..
    drop it down to gear in that settles that Click here to enlarge
    May I be "the least in the household of God."...

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