Lightened flywheels

Discussion in 'Engine, Gearbox, Exhaust and Air Intake' started by Spanky-197, Feb 14, 2015.

  1. Spanky-197

    Spanky-197 Paid Member

    Messages:
    120
    Location:
    Rotherham
    Hi

    Other than k-ktec are there any other brands?

    Thanks

    Karl
     
    Last edited: Feb 14, 2015

  2. Chris

    Chris Bad cop Administrator

    Messages:
    10,549
    Location:
    Needham Market
    Car:
    LY 200t
    I think [MENTION=58]Raptor6767[/MENTION] is in the process of making one also, not sure if its too sell or just to test though.
     
  3. Yiannis197

    Yiannis197 Paid Member

    Messages:
    3,615
    Location:
    London
    Car:
    Clio R27
  4. Fernandez

    Fernandez Gold Member

    Messages:
    8,900
    Location:
    Ches Vegas
    Car:
    Project Lotus is go
  5. Raptor6767

    Raptor6767 Gold Member

    Messages:
    3,266
    Location:
    Zagreb, Croatia
    Car:
    Renault Sport Clio 197T
    For now just for my car and when it's done will test it out on my car.

    Then if it's light and cheap enough I might offer them.

    The goal is <3.9kg and <£400.
     
  6. pacman.

    pacman. Former Admin

    Messages:
    380
    Location:
    Harlow Essex
    Car:
    Clio R27 F1 458/500
    Just fitted one from engine dynamics. Weighed it before fitting and it came in at 4.3kg. I then weighed the original flywheel It weighed 6.3kg! Will let you all know how I'm getting on after it has been bedded in along with my brakes.

    image.jpg
     
  7. R27SG

    R27SG

    Messages:
    191
    Car:
    R27
    Hi what is the lightest flywheel avail?
     
  8. pacman.

    pacman. Former Admin

    Messages:
    380
    Location:
    Harlow Essex
    Car:
    Clio R27 F1 458/500
    I would say that if you wanted a lighter one then I have. Then you would have to look at getting one custom milled.
    My flywheel has made a notable difference when on a trackday. Down shifts seems to be easier when going down the gears into corners.
    I read somewhere that having a lightened flywheel affects your torque would like to see if that is true or not.
     
  9. R27SG

    R27SG

    Messages:
    191
    Car:
    R27
    Did u felt that torque is affected? I read that lighter flywheel will reduce inertia force and make the car struggle at higher speed? Any reviews?
     
  10. Kazumz

    Kazumz

    Messages:
    1,520
    Location:
    Wiltshire/Swansea
    Car:
    Clio RS 200 Gordini
    Honestly, I see all this "May affect torque crap" all the time...

    Scientifically and logically, when you look at it, the engine is only going to do what it can do. Think of lightened parts as the equivalent as putting a ball bearing turbo on a car, it's going to boost earlier because of the extra weight spinning and aiding the car. In an N/A car though, a lightened part is going to get up the revs easier and you're going to get in to your power band faster, there are no other variables. How in gods name does a lightened part REDUCE torque? It may reduce torque when you come off the throttle and back on as the weighted part is going to want to spin for longer, but how in gods name will that increase your torque either?

    What you're trading off as torque for engine free speed you are NOT going to notice a power difference. You won't go faster, but you'll certainly get there faster. Besides, if you're going to lighten a component, the loss in torque, if I'm incorrect (because I know nothing) will not matter, because you'll need less torque in the first place because the car weighs less overall.
    @R27SG Very rarely you are going to be doing 130MPH on a track mate, to be honest.

    If I've totally missed the point, can someone more mechanically minded explain. Logically, I just can't see how it would make a difference. What's traded off, will be picked up elsewhere.

    Although lightening any component is a MUST. Remove your back seats from your Clio and the ISOFIX bar which will come in around 22-30kg weight loss and you'll actually notice a difference.
     
  11. PROIL

    PROIL

    Messages:
    201
    Location:
    Aberdeenshire
    Car:
    197 Rally Car
    go for 7 1/4 clutch

    13191.jpg
     
  12. rosscoe

    rosscoe Platinum Member

    Messages:
    185
    Location:
    newburgh fife
    Car:
    clio 197/ BMW e46 M3/ Disco td5 Remapped..
    Was thinking about this one myself for the track car. Are the clutches easy to come buy?
     
  13. PROIL

    PROIL

    Messages:
    201
    Location:
    Aberdeenshire
    Car:
    197 Rally Car
    looking into them just now, R3 clio uses 7/14 clutch so are available from renault sport
     
  14. rosscoe

    rosscoe Platinum Member

    Messages:
    185
    Location:
    newburgh fife
    Car:
    clio 197/ BMW e46 M3/ Disco td5 Remapped..
    had a look and they're available from Demon Tweeks too
     
  15. Yiannis197

    Yiannis197 Paid Member

    Messages:
    3,615
    Location:
    London
    Car:
    Clio R27
    Can anybody with a lightened flywheel give us a proper before and after feedback please? All good with the theories but what we miss in here is some real life feedback.

    From what I know (in theory again) is that the car revs faster, however the revs drop faster as well for the very same reason. Less mass less inertia. How faster do they drop though? That would also give an enhanced negative effect when driving on uphills as the effect is magnified. Now that might not be a problem for the vast majority of people but for me plays a significant role as I'm doing the Alps every year and the car struggles as it is already!

    Also the fuel efficiency is probably negatively affected as well as you'd now need more energy to maintain a certain speed on the motorway, again less inertia so more energy needed to maintain a specific speed.

    I really want to fit one of these flywheels, I really do, especially now that I'm dropping my box. However I haven't found any solid information about it which makes me believe that people are trying to justify their purchase by either lightly praising them or by not giving any input at all.

    Again, I would massively appreciate any feedback from people who made this mod either on the Clio or on a different car.
     
  16. rosscoe

    rosscoe Platinum Member

    Messages:
    185
    Location:
    newburgh fife
    Car:
    clio 197/ BMW e46 M3/ Disco td5 Remapped..
    I've just ordered a 3.5 kilo super light flywheel from ttv to suit a 184mm clutch.
    Once it's all fitted and back running again I'll let you know how it is. A quaife ATB diff is getting fitted as well.
     
  17. Trophymad

    Trophymad

    Messages:
    61
    Location:
    Leicestershire
    Car:
    SG 200 cup
    Should of gone for a gripper diff night and day different
     
  18. Rogue

    Rogue Platinum Member

    Messages:
    6,794
    Location:
    Essex
    Car:
    Boosted R27
    Its alright if you can drop the gearbox every year and service it though.
     
  19. Trophymad

    Trophymad

    Messages:
    61
    Location:
    Leicestershire
    Car:
    SG 200 cup
    You don't need to that's all smoke and mirrors I would rather have a diff that works than one that doesn't The synchros will go before the diff wears out lol
     
  20. rosscoe

    rosscoe Platinum Member

    Messages:
    185
    Location:
    newburgh fife
    Car:
    clio 197/ BMW e46 M3/ Disco td5 Remapped..
    I did half think of a gripper diff, but all the talk of pre loads was a bit intimidating, dunno how its set or anything.
    Are you saying the Atb is no good then?
     
    Last edited: May 16, 2015

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