Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
|
Will rev up quicker but will perform worse in gear up hills and drink more fuel
|
Graham88
Member
Registered: 16th Apr 07
Location: South East Kent Drives: E46 M3
User status: Offline
|
Whys that? Nurburgring back straight :-(
|
SetH
Member
Registered: 15th Jul 01
User status: Offline
|
A lot of it is to do with inertia and the storage of energy. The car will rev up quicker but it will also drop revs quicker and you will have less engine braking.
Apparantly you will have more precise control over the revs which I guess would be good given the high revving nature of your engine. I have had 2 lightened flywheels before on Scoobs and to be honest the only downside I had was that it was more difficult to launch correctly.
|
Graham88
Member
Registered: 16th Apr 07
Location: South East Kent Drives: E46 M3
User status: Offline
|
I don't launch so it's fine :-)
Apparently it will shift lock easier on downshift, which is the only thing I'd say I can see taking a bit of getting used too as its already doing it from 3rd to 2nd
|
SetH
Member
Registered: 15th Jul 01
User status: Offline
|
If it is rated by owners and as you do track work then I think its a no brainer dude.
Plus I will like it when I buy it off you this time next year 
|
gazza808
Member
Registered: 30th Jun 08
Location: Peterborough
User status: Offline
|
quote:
Originally posted by Steve
Will rev up quicker but will perform worse in gear up hills and drink more fuel
How many lightened flywheels have you experienced?
Cause in my experience that utter crap your talking.
My XE had a sub 3kg fly on it,
And my 106 also has a lightened fly,
I experience none of what your saying.
Only hassle I had with the XE was super easy to stall, but the 7.25" twin plate sintered clutch didn't help.
|
Graham88
Member
Registered: 16th Apr 07
Location: South East Kent Drives: E46 M3
User status: Offline
|
quote:
Originally posted by SetH
If it is rated by owners and as you do track work then I think its a no brainer dude.
Plus I will like it when I buy it off you this time next year
That's why I went for it mate  That and the fact I will be paying no labour on it as it's all apart anyway
Haha I will run all mods past you 
|
Edges 58
Member
Registered: 30th Mar 10
Location: Nottingham
User status: Offline
|
I'll be keeping an eye all your mods for when I upgrade to an M
|
bigron1988
Member
Registered: 29th Aug 09
Location: Southport, Merseyside
User status: Offline
|
quote:
Originally posted by gazza808
quote:
Originally posted by Steve
Will rev up quicker but will perform worse in gear up hills and drink more fuel
How many lightened flywheels have you experienced?
Cause in my experience that utter crap your talking.
My XE had a sub 3kg fly on it,
And my 106 also has a lightened fly,
I experience none of what your saying.
Only hassle I had with the XE was super easy to stall, but the 7.25" twin plate sintered clutch didn't help.
I think your forgetting that Steve is a Internet mechanic and always knows best
|
SetH
Member
Registered: 15th Jul 01
User status: Offline
|
quote:
Originally posted by Graham88
quote:
Originally posted by SetH
If it is rated by owners and as you do track work then I think its a no brainer dude.
Plus I will like it when I buy it off you this time next year
That's why I went for it mate That and the fact I will be paying no labour on it as it's all apart anyway
Haha I will run all mods past you
Can you put in some uber 1337 clutch while you are at it please 
|
AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
|
lightened flywheel wont make a huge difference, wont make it a pig to drive either.
|
Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
|
quote:
Originally posted by gazza808
quote:
Originally posted by Steve
Will rev up quicker but will perform worse in gear up hills and drink more fuel
How many lightened flywheels have you experienced?
Cause in my experience that utter crap your talking.
My XE had a sub 3kg fly on it,
And my 106 also has a lightened fly,
I experience none of what your saying.
Only hassle I had with the XE was super easy to stall, but the 7.25" twin plate sintered clutch didn't help.
why do you think they fit heavy flywheels as standard its to aid the engines sustained rotation with the inertia from the weight, most notable up hills where the rotating mass will help the engine with stored mass energy. Also means the engine is less likely to coast down quickly in gear thus giving better economy, only disadvantage is it takes more power to get it moving in the first place. No need to be abusive you may learn something
|
Ben G
Member
Registered: 12th Jan 07
Location: Essex
User status: Offline
|
some of the flywheels i fit in work weigh sod all (1.4 tdci 70ps). whats the reason for this? they are single mass btw. can lift them with a couple of fingers.
the dual mass ones weigh a ridiculous amount however (1.6 tdci 115ps).
|
Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
|
Depends on the engine I guess how its designed gearing, engine braking etc. For me lightened flywheels offer as many disadvantages as advantages. good if you are doing standing starts or a track which requires lots of braking and acceleration. Once in motion they are more of a disadvantage than advantage as you cant take advantage of the stored energy they offer.
[Edited on 04-06-2012 by Steve]
|
AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
|
Graham - there is a mental E46 that races up here with us.
Carbon doors, roof, boot etc - 500bhp+ with supercharger, slicks, sequential, MASSIVE wing.
I'll go find pics.
|
AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
|
|
SetH
Member
Registered: 15th Jul 01
User status: Offline
|
 weapon!
|
gazza808
Member
Registered: 30th Jun 08
Location: Peterborough
User status: Offline
|
quote:
Originally posted by Steve
quote:
Originally posted by gazza808
quote:
Originally posted by Steve
Will rev up quicker but will perform worse in gear up hills and drink more fuel
How many lightened flywheels have you experienced?
Cause in my experience that utter crap your talking.
My XE had a sub 3kg fly on it,
And my 106 also has a lightened fly,
I experience none of what your saying.
Only hassle I had with the XE was super easy to stall, but the 7.25" twin plate sintered clutch didn't help.
why do you think they fit heavy flywheels as standard its to aid the engines sustained rotation with the inertia from the weight, most notable up hills where the rotating mass will help the engine with stored mass energy. Also means the engine is less likely to coast down quickly in gear thus giving better economy, only disadvantage is it takes more power to get it moving in the first place. No need to be abusive you may learn something
But what about the extra power it takes to spin the heavy fly up every time you go up the revs,
More power = more fuel.
Also to think about it, my mondeo has a single mass fly conversion (much lighter) I use exactly the same gear, up the same hill, towing my 1.3t no hassles, no needing to drop it down.
Learn something? Paha! The crap you spout tbh. Any one can google something.
I've actually experienced the difference. So know what I'll believe.
[Edited on 04-06-2012 by gazza808]
|
Graham88
Member
Registered: 16th Apr 07
Location: South East Kent Drives: E46 M3
User status: Offline
|
quote:
Originally posted by AK
Graham - there is a mental E46 that races up here with us.
Carbon doors, roof, boot etc - 500bhp+ with supercharger, slicks, sequential, MASSIVE wing.
I'll go find pics.
That's cool as fuck, I'd be interested to know the weight. There are a fair few in the 1250kg region but they haven't gone extreme with carbon panels. I bet that's nuts
|
taylorboosh
Member
Registered: 3rd Apr 07
User status: Offline
|
i dont see the huge need for making it lighter, more power can be had so easily...may aswell keep it practical
|
Graham88
Member
Registered: 16th Apr 07
Location: South East Kent Drives: E46 M3
User status: Offline
|
Making it lighter is a hell of alot cheaper than engine work
When I had it all stripped out and just a drivers seat the car was so fucking quick
|
taylorboosh
Member
Registered: 3rd Apr 07
User status: Offline
|
i see your point but carbon is far from cheap, no go for me im afraid anyway.... child needs a seat.. maybe some carbon goodies though
|
AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
|
yes, carbon is for fanboys BUT i'd much rather a 200kg lighter car than 100bhp more for example.
Will handle much better, stop better, accelerate better.
A lot cheaper!!!
|
taylorboosh
Member
Registered: 3rd Apr 07
User status: Offline
|
your probably right, I don't drive on edge enough to notice
|
AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
|
ps.... the only carbon on the GTR or Impreza is actualy just 1 spoiler... thats it Glassfibre is where its at for the non show track cars 
GTR runs GRP front wings, doors, rear 1/4s, boot skin and alu bonnet. Its lost about 200kg (and runs a huge cage)
|
