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Discussion:Flywheel.

Discussion in 'General Tech and Maintenance' started by bjfisher, Dec 5, 2004.

  1. bjfisher

    bjfisher Senior Member

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    Ok, there are two schools of thought when it comes to flyewheels.Light or heavy?For the motor i'm building (h23vtec-turbo later) i'll be drag racing.Some say to have a lightened one would be better to keep the rpms up with out slouching off after a shift.then some say lightened one would be better so that the rpms would raise quicker.i guess its like 6 of one, a half dozen of another.

    in my position, which one do you think would be better?explanations would be great, i'd really like some informative information to come out of this.

    i work at a machine shop, and the thought crossed my mind, that IF indeed, i were to go with a lightened flywheel, i could try to make one myself using my stock h22 flywheel and machining it as well as turning it.

    so let the discussion commence.......
     
  2. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Light flywheel = faster revving
    You won't be able to safely machine your stock flywheel down to the weight of aftermarket flywheels... just buy one if you want the best drag strip performance without sacrificing safety.
     
  3. bjfisher

    bjfisher Senior Member

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    just curious as to why you say lighter is better in my case
     
  4. civicious

    civicious FüK-VTEC VIP

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    your post makes no sense.




    Are you trying to say that some people say a HEAVIER flywheel would be better? And if so, why? Do you see any aftermarket WEIGHTED flywheels? Nope. Why? Because lighter is better, mang.
     
  5. bjfisher

    bjfisher Senior Member

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    just sayin what people told me, never said i believed it;)
     
  6. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Use the search function to look for any post containing "flywheel" that I've written. You'll find a lot of good stuff. I've written quite a bit about lightweight flywheels here on HondaSwap.
     
  7. bjfisher

    bjfisher Senior Member

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  8. Seany-izzle

    Seany-izzle New Member

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    YEAH YOU FUCKING NOOB USE THE FUCKING SEARCH BUTTON!!!! jk. and in all actuality i have nothing to add to this thread. :p
     
  9. asmallsol

    asmallsol Super Moderator

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    Well one problem with lighten flywheels is they are much harder to launch. There is defently a too light point in drag racing. If you were into road racing, I say light as hell, but in your case, somewhere around a 11 or 12lb fw would be a good weight to aim for.
     
  10. bjfisher

    bjfisher Senior Member

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    why 11 or 12lb?just bc of launching?if so,couldnt i learn???
     
  11. jamesA

    jamesA Well known pissed off telephone guy VIP

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    a 7 or 8 pound flywheel will drop the revs off too quickly, you'll probably end up stalling the car 4 or 5 times.
     
  12. nismogod

    nismogod Senior Member

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    umm, it may be me, but in a high revving drag application you SHOULD use a heavier flywheel.

    here comes the arguement about "rotating mass" etc. that only applies when accelerating in a positive or negative.

    look at a rotary drag car....heavy ass flywheel. why? so there is absolutely on loss during shifts, and it carries momentum better into the next gear.

    feel free to argue with me. road race, any thing with down and upshifts, use lighter. if all you are doing is accelerating as hard as you can, and upshifting, heavier is better. assuming you can get your car upto rpm before the lights go green. lol
     
  13. bjfisher

    bjfisher Senior Member

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    thanks, thats exactly the other side of the contraversy i wanted discussed :)
     
  14. nismogod

    nismogod Senior Member

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    no problem. i must stress though, that the opinion i expressed is my own. and that i have that opinion based of what i've seen, read, and the physics i've taken over the past couple years. i could be incorrect, but i am pretty sure about my response.
     
  15. civicious

    civicious FüK-VTEC VIP

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    I'm keeping my 8.8lb ACT in my car, which won't see a track other than a dragstrip.

    Pluh.
     
  16. GSRCRXsi

    GSRCRXsi Super Moderator Moderator VIP

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    hey this isnt honda-tech, LOL.
     
  17. sohcslammer

    sohcslammer Senior Member

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    :withstupid:

    The 8.8 is just too light.
     
  18. beerbongskickass

    beerbongskickass Senior Member

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    My stock flywheel works just fine. I would rather spend my money on more important things.
     
  19. bjfisher

    bjfisher Senior Member

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    seems to me, heavier is better for this piece *shruggs*
     
  20. nismogod

    nismogod Senior Member

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    when building a race car, you look at all aspects. well, when fully building. but i do understand your point.
     
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