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Old 02-15-2015, 03:04 PM   #52
Xinshadow
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Join Date: Dec 2012
Drives: 2013 Scion FR-S Ultramarine
Location: Northern Illinois
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Quote:
Originally Posted by Caspeed View Post
Could you please explain to me how a lighter driveshaft can have some effect on heel & toe shifting? If you were talking about a lighter flywheel I would agree. The driveshaft isn't even connected to the engine while doing a heel & toe. Furthermore the driveshaft is rotating at differential speed.
Sure! When we're first learning to heel toe, its often very abrupt and bucky when the transmission is reengaged since you have to spin up all those driveline components; to really do it right you have to get your rpms into a 200-300 rpm window of where you are matching speed. With lighter driveline components the practical effect is the window for a smooth feeling downshift now widens to about 500-600 RPM. It's not a crazy difference but its very noticeable on the track at higher speeds. Even my HPDE instructor could tell it was there after a lap in the car haha
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