rev limiter?

Discussion in 'Sportster Models' started by injunwil, Aug 12, 2010.

  1. injunwil

    injunwil Member

    am i correct in assuming the 2005 Sportster is equiped with something to prevent over revving it? i don't have a tach and normally don't get on it, but was showing off for a buddy, last night, and really wrung er out good. i can't estimate RPM, but i feel kinda guilty about raw doggin a cruiser and would like to know that there's something to prevent damage from beatin it like that.
  2. dbmg

    dbmg Experienced Member

    This is what I found. Hope this helps:
    If your machine is equipped with a tachometer, shifting up at 3000 RPM is a good rule of thumb, downshifting at 1500 (ish?).

    Since later model machines have rev limiters (the stock set at 5400 RPM) it is unlikely that you will damage the engine from over revving. Lugging the engine, though, can cause premature wear.

    If your machine lacks a tachometer, a good starting point for shifting is on the "tens" in Miles Per Hour. Again, the rev limiter will protect you.
  3. Jack Klarich

    Jack Klarich Expert Member

    Yes you have a Rev limiter, as well as Big Twins :s
  4. fisherman124

    fisherman124 Active Member

    yea dont beat it like that showing off . buy a tach if u cant hear it reving up that much i generally dont take mine over 5000 and that to me is beating her. sometimes u must to get in a save position from people out there

    NEWHD74FAN Experienced Member Retired Moderators

    Hobbit is the man regarding how much we can get out of our "stock and modified high flying" hardware. The key is the gearing of the tranny and what you are using your throttle hand for. The key is to extract in proper measure, the power and torque out of your machine without affecting longevity.

    Limiters are only set up to prevent you from "grenading" your hardware if you have an errant shift or "want" to save your ride for another day. On the racetrack that is one weekend at a time, but on the street or touring, that is entirely your choice to mess with RPMs outside that range...hammering your bike or keeping it at that high a range...will have consequences.
  6. JohnnyBiker2

    JohnnyBiker2 Member


    The SE ignition that I just purchased allows me to select the rev limit. Believe it or not, I can set it for over 7g if I want, but would be useless for me.


    I use the 10 mph rule when I am on my bike. I generally react to what my bike is telling me. IF I hear that the bike is winding, well, I shift. Listening to what is going on is half the battle.
    Last edited by a moderator: Aug 13, 2010
  7. injunwil

    injunwil Member

    appreciate the comforting input, guys. it sounds like i don't really have much to worry about from do one 1/4 mile run, eh? it's an EXTREMELY rare (as in once) deal. i never let it lug, but i don't ride it like my old sportbike either. i was a little stressed that i had put alot of excessive wear on it by wringin 'er out one good time because i really don't know much about HD's or what they can take. my old bike could sit at redline all day, every day, and love it, but it was designed to be a track bike.

    thanks again for easin my mind :)
  8. 2006FXDCI

    2006FXDCI Active Member

    There is a huge difference between free revving the engine as in being in neutral and winding it up and actually doing a quarter mile pull on it. Free revving it will destroy your engine alot faster than just doing a quarter mile run. You should be fine.