Micke wrote:We'll make new clutch flywheels as well.
Complete thing of 4140 CroMo (DIN 42CrMo4).
This for the Helix twin plate 7.25" clutch.
Weight will be about 1810 g so IMHO making it complicated with alloy and steel surface doesn't pay off.
yes, i agree with you...
making more parts, had to lock the screw, and glue the plate....
but, for the 215mm(8.45") oem single plate i tried some steel(very good steel) flywheels and it looks like impossible to go under 3200grams.
under this weigth there is as much critics areas if you use a 2017 alloy.
dont forgot that in regard of the weigth the ratio is not the same in regard of the strenghness. better for alloy
.
so at the same 'strengthness' a alloy flywheel with a steel plate is near to 2600grams and a steel flywheel is near to 3200 gramms.
good steels flywheel cost them a couple of $ but far to the so expensive$$$$ than the alloy one with steel friction plate and bolts and
....i agree 2
from ap racing them sintered dampened clutch disc 5354-21 (for single plate milano..ect...) can hold up to 390 nm before failure...
so its looks like a good way to have a good clutch not too much expensive that can hold some serious powers...
IMHO, built a well flywheel (alloy or steel no matter) to fit a ap racing(or other) double or triple (or more) plates clutch as no sense
.
because here, we are speaking about 400-450 or more ....800 NM from a top tuned turbo 4 cylinder or a turbo v6:
AND here...clutch or not....the problem was not here....but the gearbox will explode sooner...
about the double plate from gtv6....in france (in europe too) because of numberous gtv6 runnings into the streets around the 80' and 90' it appears that the double plate(gtv6 oem) is.....far to be a good choice, looks like not easy to drive(not my problem) but!, looks like there is so many customers that gets clutch problems sooner, one of the discs became out of use so faster the than the second, and this lead to the alfa romeo after sales service to change the clutch for a single plate for very unhappy customers
weights losses and wins.....
get less weigth(and inertia) in an expensive double plate ap racing, and keep the front iron flywheel have no sense...
IMHO do all or nothing......street or racing....no more no less.
even..do a little is allowed (but a little small).
had alloy flywheels...carbon axle and transversal shafts ligthened prockets, billet cranckshaft, titanium rods..ect.........why not...
but dont drive in leathers seats and electrics mirrors.
sometimes i thinking in a complete set titanium bolts, nuts, washers... carbon seats,...aluminium roof, carbon fiber body, full hand made new steel/alloy front and rear suspensions...and more
...(forgot the amout of $$)
but IMHO, think, design, and built parts is so play. forgot the wins and losses, just satisfaction of the home made.
i dont care about carbon parts and awesome very interesting parts all ready.
want to designe all myself....and obviously explode somethings myself
....but this comes less and less during the years...
2.05 kgrs... !20% of the oem cast iron one)
