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ALLTRBO · 11-07-2010, 08:56 AM

Ouch...

Did you guys datalog the runs by chance?
Hopefully Rich can figure out some techniques and tricks at the strip to help with those issues, I'm sure he'll tame them better as time goes on. That's a lot of changes to get used to all at once. I'm sure more traction might help because I imagine he was blowing away the cold tires on the cold pavement. What were the 60 foot's? I guess I can see all of that adding up to less than stellar times.

Since it has gotten colder out (~50*) my car spins all the way through first (even from a roll-on) and a bit into second, heh. I have the 19's with the stock Pirelli all-seasons at the moment, but they're still decent tires, and the car is 100% stock other than the current wheel swap from the RS 20's.
That being said, I can see the STS cars begging in that respect (as usual).

I think a MUCH lighter flywheel/clutch setup would greatly benefit these cars (both turbo and N/A), to me it's painfully obvious in every respect that this car's flywheel or flywheel/clutch is way too heavy. Losing all that mass and reducing the MOI will be a huge help with the second gear grinding (among other issues). With a lighter rotating mass, the free-wheeling RPM's drop faster, and at the same time the synchro's don't have to work nearly as hard to pull the RPM's down for the next gear because the mass is easier to slow down. For the turbo cars, shifting faster will help keep the turbo spooled a little better (as was alluded to). We also have a pathetic first to second RPM drop, but without tranny gear ratio changes we just have to deal with that.

Once we get some lighter flywheel options out there, I think a lot of the shifting issues will be improved, if not cured.

As for the rev limiter, if the tires and the clutch hold well enough, it's just a matter of practicing for the setup and conditions. It's usually better to short-shift a little than to hit the limiter.

Either way, the STS cars can only get better from here.

How's yours doing lately, Z?

11-07-2010, 08:56 AM	#531
ALLTRBO Drives: V8 up front and 7-spd out back FTW Join Date: Apr 2010 Location: MD Posts: 746	Ouch... Did you guys datalog the runs by chance? Hopefully Rich can figure out some techniques and tricks at the strip to help with those issues, I'm sure he'll tame them better as time goes on. That's a lot of changes to get used to all at once. I'm sure more traction might help because I imagine he was blowing away the cold tires on the cold pavement. What were the 60 foot's? I guess I can see all of that adding up to less than stellar times. Since it has gotten colder out (~50) my car spins all the way through first (even from a roll-on) and a bit into second, heh. I have the 19's with the stock Pirelli all-seasons at the moment, but they're still decent tires, and the car is 100% stock other than the current wheel swap from the RS 20's. That being said, I can see the STS cars begging* in that respect (as usual). I think a MUCH lighter flywheel/clutch setup would greatly benefit these cars (both turbo and N/A), to me it's painfully obvious in every respect that this car's flywheel or flywheel/clutch is way too heavy. Losing all that mass and reducing the MOI will be a huge help with the second gear grinding (among other issues). With a lighter rotating mass, the free-wheeling RPM's drop faster, and at the same time the synchro's don't have to work nearly as hard to pull the RPM's down for the next gear because the mass is easier to slow down. For the turbo cars, shifting faster will help keep the turbo spooled a little better (as was alluded to). We also have a pathetic first to second RPM drop, but without tranny gear ratio changes we just have to deal with that. Once we get some lighter flywheel options out there, I think a lot of the shifting issues will be improved, if not cured. As for the rev limiter, if the tires and the clutch hold well enough, it's just a matter of practicing for the setup and conditions. It's usually better to short-shift a little than to hit the limiter. Either way, the STS cars can only get better from here. How's yours doing lately, Z?