scootz
|
| posted on 11/11/13 at 11:21 AM |
|
|
Flywheel... How 'Light'
Can't say I have much experience of playing with various flywheel weights, so looking for some input from the LCB massiv! 
I'd imagine there's a great deal more 'engine-braking' with a lighter flywheel... and I guess it could be quite unpleasant
when just pootling around? Does anyone have any opinions on how light is too light?
Cheers!
It's Evolution Baby!
|
|
|
|
|
daveb666
|
| posted on 11/11/13 at 11:29 AM |
|
|
I had 3.5kg on my old Vauxhall Corsa with an XE on throttle bodies, it revved like a bike and I honestly never saw any down-side to having it.
I'd go the lightest you can go without having to resort to a non-standard clutch.
2007bc Photography - Commercial and Wedding Photographer based in West Yorkshire
http://www.2007bc.co.uk / http://www.huddersfieldcommercialphotographer.co.uk
|
|
|
scootz
|
| posted on 11/11/13 at 11:49 AM |
|
|
Cheers Dave!
It's Evolution Baby!
|
|
|
matt_gsxr
|
| posted on 11/11/13 at 02:09 PM |
|
|
BECs have no flywheel. What is not to like?
|
|
|
v8kid
|
| posted on 11/11/13 at 03:58 PM |
|
|
I fitted the lightest available flywheel on my V8 and like others said there are no downsides only positives in a light vehicle. May be different in a
4x4 offroader if that's your thing
Cheers!
You'd be surprised how quickly the sales people at B&Q try and assist you after ignoring you for the past 15 minutes when you try and start a
chainsaw
|
|
|
prawnabie
|
| posted on 11/11/13 at 04:01 PM |
|
|
I would imagine most of the engine braking comes from the fact that the throttle boddy is closed and there is nowhere to suck air from.
|
|
|
richardm6994
|
| posted on 11/11/13 at 04:31 PM |
|
|
quote:
Originally posted by v8kid
I fitted the lightest available flywheel on my V8 and like others said there are no downsides only positives in a light vehicle.
Cheers!
ditto! I fitted the lightest flywheel in my v8. It sounds amazing when all 8 pots instantly light up to 6k from idle!
as taken from the tinter-web (mini spares);
For every 1 lb removed from the flywheel, the engine sees 11.22 lbs less to accelerate off of the total car.
Therefore by lightening the flywheel by 8 lb, the engine sees a total reduction of the cars accelerative weight of 89.68 lb.
Obviously this is regarding classics mini's and related to their gearbox ratio's, but I'd say it's not a bad "thumb in
the air"
|
|
|
ashg
|
| posted on 11/11/13 at 04:32 PM |
|
|
4kg on a zetec seems to work ok from my experience. 6kg on the saab turbo engine is the lightest i could go without swapping to an ali one with steel
plate insert.
makes a fantastic difference to a nice light weight 7.
Anything With Tits or Wheels Will cost you MONEY!!
Haynes Roadster (Finished)
Exocet (Finished & Sold)
New Project (Started)
|
|
|
MikeRJ
|
| posted on 11/11/13 at 05:39 PM |
|
|
quote:
Originally posted by matt_gsxr
BECs have no flywheel. What is not to like?
They do have a flywheel, just a very small one.
|
|
|
chrism
|
| posted on 11/11/13 at 06:02 PM |
|
|
Engine braking doesnt have much do to with flywheel weight and more to do with cylinder sizes and compression. You learn this from riding V-Twin
motorbikes. My Ducati 748 (Increased to 853) doesnt have much in the way of a flywheel and it has incredible engine braking due to the large
cylinders, when I ride it around town I very rarely use any brakes at all until I need to come to a standstill or have the clutch pulled in.
The only bad side I have heard about lightened flywheels is apparently it can affect acceleration when going up a steep hill, don't ask me why I
just remember hearing it somewhere.
----------------------------
A little hard work never killed anyone, but why take the risk!
-----------------------------
|
|
|
Paul Turner
|
| posted on 11/11/13 at 07:06 PM |
|
|
Whatever you do please do not risk fitting a lightened standard flywheel, but a properly manufactures steel one (or alloy with a steel insert).
A lightened standard one can kill.
For the sake of £200 do it properly.
|
|
|
