Just thought I'd chuck up a few piccies of it.

It was 6.6KG and is now 5.4KG but apart from a tiny bit in the middle, it was all taken off the outer edge, front and rear, where it counts a lot more.

Should perform well I hope

The comparison shot is another 200mm flywheel





Cheers,

Kristian

nice, i've not told them where or how much to take off mine.. let's see how it comes back

Who've you both used?

I just used a local machinisht. Not sure who is doing arc's.

Kristian

:yum::yum:

ok, please tell me what benefits a lightened flywheel means, does it make the engine pick up better?

rev's pick up a lot faster, so better off the line.

dissadvatage is you may get a lumpier idle due to less rotational momentum.

I think of both as pro's. A lumpy idle sounds sportier lol

Kristian

kritip said:

rev's pick up a lot faster, so better off the line.

dissadvatage is you may get a lumpier idle due to less rotational momentum.

I think of both as pro's. A lumpy idle sounds sportier lol

Kristian

Click to expand...

I was also told hills can become more of an issue?

never noticed this before personally, and never heard it, but it may be an issue on some cars?

Maybe at very low revs, like under the idling rpms, but not in the normal rev range.
The flywheel weight shouldn't affect the power output of the engine, it only reduces the angular acceleration (whatever it's called in english) of the crankshaft - the heavier the flywheel, the slower the revving. So with a lighter flywheel, you'll reduce time needed for revs to rise to a certain value (and also fall down back to a certain level), great if you're heel and toe-ing and generally rev-matching your shifts if you ask me

Looks good could be better tho, they could have used a radiused tipped tool to reduce possile crack starting points (im sure it'll be fine tho)

never seen of the middle bit being machined tho.

My latest one weighs in at 3.2kg

arc....you should have said, i would have done yours, i did johns 200mm flywheel, carnt remember how much i took off it tho

got a pic of your 3.2'er? I mentioned to the guy people had taken them down to 3.5, am he couldn't figure out how lol. Don't think he fancied drilling and slotting etc.

For £20 i can't complain, same day service, and just round the corner...hopefully it'll hold up just fine Plenty left on it.

Kristian

£20.......no need to worry then, bargain....if they balanced it aswell

wil get some pics soon

Brooky said:

arc....you should have said, i would have done yours, i did johns 200mm flywheel, carnt remember how much i took off it tho

Click to expand...

i know, i realised that shortly after i dropped it off! ah well, tis done now!

jamie86 said:

I was also told hills can become more of an issue?

Click to expand...

never had that problem with the flywheel on my 1242 which was on there for a couple of years

GOD is there any flywheel left

I personally would not fit that flywheel to a car I was expecting to rev beyond 3000rpm!!! It WILL shatter.

If you want to do that kind of profiling on a flywheel you must use EN40 or EN30 steel. (I think those are the right numbers???).

Cast flywheels have been known to shatter with less than half that kind of removal.

Back in the early 1990's a guy was just approaching Quarry corner at Castle Combe in a Spaceframed Metro, with some trick A series in it. The flywheel shattered, and pieces came through the casing, bulkhead and into his Leg. There were also pieces embeded in the Tarmac.

From what I know, he fainted, flat out on the power, and went straight into the armco. He's now dead as a result.

Well....its getting fitted

ive had a 3.5kg flywheel(done by me) fitted to my old engine, and that was fine for a good few thousand miles......and that engine spent more than half its time in my hands above 4000rpm.

This flywheel, from a design point of view is alot better that my old one.

As for steel flywheels, shove this in your trumpet

Brooky said:

Well....its getting fitted

ive had a 3.5kg flywheel(done by me) fitted to my old engine, and that was fine for a good few thousand miles......and that engine spent more than half its time in my hands above 4000rpm.

This flywheel, from a design point of view is alot better that my old one.

As for steel flywheels, shove this in your trumpet

Click to expand...

Nice work!!! I made a Steel Flywheel for a 2ltr Lancia TC a few years back, very much like the one you have there. I then went on to mill cutouts around the periphery of the clutch face, and even milled the 36-2 slots for the crank sensor. (I dont work at Rolls Royce anymore unfortunately). I think I'm gonna do it all again on the Panda, it'll just cost me a bundle now.

After browsing youtube and reading this, im worried now lol....still it's fitted now, and engine going back in tomo, so will have to see how it goes.

At least on our cars it won't hit the driver I'll just give it a good thrashing to see if it's gonna give or not.

Kristian