Lightened flywheel
10-24-2001, 01:24 PM
#3
Well, maybe one more
Join Date: Mar 2001
Location: Far away, locked up from anything interesting, almost in the dead center of the US
Posts: 173
Re: Lightened flywheel
Godz,
A lightened flywheel has several advantages and disadvantages.
Pros,
The most noticable is that your engine will rev up considerably faster. This is due to rotational mass (or inertia or whatever they are calling it), or loss there of. When a 10 lb. flywheel spins at 5000 rpm, it creates added mass to your driveline. When a 5 lb. FW spins at that same speed, it creates half of said power robbing mass. If your car is turbocharged(I'm assuming not) this really helps to spool the turbo up faster.
A LFW also produces less stress on your crank and bearings, as they don't work as hard to spin it. They don't PRODUCE more power, they just free up more power to the ground. They also smooth out your idle.(if you have a good one)
Cons,
If your FW isn't properly lightened, you get crappy idle.
As well as speeding up your engine in revving up, it also speeds up the other way as well. As in, when you are going up and down hills, you use more gas.
I wish I had one in, my brother got one in his Rx7t and it is awesome!
Ghostz
A lightened flywheel has several advantages and disadvantages.
Pros,
The most noticable is that your engine will rev up considerably faster. This is due to rotational mass (or inertia or whatever they are calling it), or loss there of. When a 10 lb. flywheel spins at 5000 rpm, it creates added mass to your driveline. When a 5 lb. FW spins at that same speed, it creates half of said power robbing mass. If your car is turbocharged(I'm assuming not) this really helps to spool the turbo up faster.
A LFW also produces less stress on your crank and bearings, as they don't work as hard to spin it. They don't PRODUCE more power, they just free up more power to the ground. They also smooth out your idle.(if you have a good one)
Cons,
If your FW isn't properly lightened, you get crappy idle.
As well as speeding up your engine in revving up, it also speeds up the other way as well. As in, when you are going up and down hills, you use more gas.
I wish I had one in, my brother got one in his Rx7t and it is awesome!
Ghostz
10-24-2001, 01:28 PM
#4
Well, maybe one more
Join Date: Mar 2001
Location: Far away, locked up from anything interesting, almost in the dead center of the US
Posts: 173
10-24-2001, 03:19 PM
#5
Snazzy Title
Join Date: Apr 2001
Location: Houston, TX
Posts: 9,939
Re: Lightened flywheel
One thing to also worry about is driveability, as when you lose mass on your flywheel you lose the stored energy (momentum), so basically you have to rev higher to get smooth launch as when the clutch engages it no longer has mass it once had.
This isn't a problem for street discs but if you ever go to an unsprung clutch it'll be really hard to launch smoothly..
There are better ways to free up power if you ask me.. A lightened driveshaft will also help if you have a solid steel one.
Lot cheaper and easier to put in too.. Of course it won't be long before you start on that go fast crack pipe eh!
puff puff gurgle gurgle.. 60 shot nos..
puff puff gurgle gurgle.. supercharge/turbo kit
hehe it gets worse the faster you go I think..
- john
This isn't a problem for street discs but if you ever go to an unsprung clutch it'll be really hard to launch smoothly..
There are better ways to free up power if you ask me.. A lightened driveshaft will also help if you have a solid steel one.
Lot cheaper and easier to put in too.. Of course it won't be long before you start on that go fast crack pipe eh!
puff puff gurgle gurgle.. 60 shot nos..
puff puff gurgle gurgle.. supercharge/turbo kit
hehe it gets worse the faster you go I think..
- john
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