dellow flywheel

[username]

Does anybody know what the price on a 1uz dellow flywheel is? I have emailed them twice over the past month with no response.

Also, is the friction surface area designed for a 3sgte clutch... or does anybody know what the spec on it is?

I have a 3sgte fidanza flywheel and am trying to decide if it is cheaper/better to get the dellow wheel or have mine welded and drilled.

thanks in advance

 

[Peewee]

NEVER, and I mean NEVER weld and redrill a flywheel.
Its 8kg+ of unprotected steel belting around at 6000rpm.
Imagine what that would do to you if it came apart?

I have a QCA flywheel on mine, cost me $460 with a new ring gear, its 8kg.
http://www.conceptual.net.au/~peewee/uz2/flywheel_1.jpg
http://www.conceptual.net.au/~peewee/uz2/flywheel_2.jpg
http://www.conceptual.net.au/~peewee/uz2/flywheel_3.jpg

PM QCA if you want to buy one.

Clutch size http://www.conceptual.net.au/~peewee/uz2/pressure_plate_2.jpg

 

[username]

Peewee,

I appreciate your advice, and, agreed, a launched flywheel is certainly not safety approved.
Why do you feel that a welded/redrilled flywheel is weaker than a fresh milled wheel? It seems like, if the welds and resurfacing are done properly, that the difference should not be detectable.
I know of many people who do this on a regular basis for race engines, including a few folks on this board.
I do not want to appear ungratefull for the advice, or even appear to challenge your statement. I am just wondering "why".

I have heard that the dellow wheel is much cheaper than the castleman... However, still waiting on a price.

 

[Peewee]

The weight should be the only thing that makes you choose what flywheel you get.
The CRS one was about $50 cheaper than QCA's, but QCA's was a kg lighter, so I went with it.


As for redrilling, I have seen a couple of videos of flywheels exploding due to someone trying to save a couple of hundred dollars.
One was at a dragstrip, and bits of the flywheel ended up in the crowd.
Meanwhile the engine bay was pretty destroyed.
Lucky for the driver its a rotary so the flywheel is situated about 6" forward of the feet, so he escaped unharmed.
Imaging if the flywheel was in the normal place? or worse, a Mini.

Its not a risk I would take, even if 1 in a million explodes.

 

[TOBES]

Only too true Peewee...

I know a guy who used to race a stock car about 20 years ago. An early version of MadPhil's. They used a Falcon six back then and the driver sat above the gearbox tail housing with the shifter between his legs, the driveshaft under his butt and the pedals either side of the bellhousing. The flywheel was a fairly radical piece and the inevitable happened. He walks reasonably well now, but it was interesting to see him return the following season with 6mm plates surrounding the bellhousing and the front section of the driveshaft.
Possibly the first person in NZ to use a scattershield.....

I saw some photo's in a mag of maybe that RX7 and what a mess. There was talk of making trans blankets compulsory for rotors at similar events because of that incident...