Subject	Re: You can rev the engine with clutch disengaged
Posted by	aliaZ on March 25, 2010 at 1:03 PM
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In Reply To	You can rev the engine with clutch disengaged posted by sparkie on March 25, 2010 at 11:01 AM
Message	:the speed of the wheel/gear does not change. Right, this is why flywheel mass does not impact transmission syncro performance With the clutch engaged and in gear, the two different speeds come together, now the synchros work to match the two speeds. No, the clutch works to match the two speeds, the syncros have already done their job in matching the input shaft speed to the countershaft speed by the time you engage the clutch The parts with less moment of the inertia is easier on the synchros. Not quite. The parts that are attached to the input shaft have an impact on the syncros. The clutch disk with less moment of inertia will shift easier. The flywheel and pressure plate don't matter when the clutch is not engaged.
Follow Ups	Looking for feedback on Z1's twin disk clutch - sak01 20:38:44 03/23/10 a twin disk will be harder on your syncros - aliaZ 22:03:48 03/23/10 Is that due to the higher moment of inertia? - CaliguyPurdue (Selin Design) 22:39:24 03/23/10 yep - aliaZ 22:54:28 03/23/10 I have the RPS carbon/carbon twin on my Z - moxie (SF) 22:50:13 03/23/10 IIRC, the earlier RPS carbon/carbon clutches - aliaZ 22:56:26 03/23/10 ah snap. I have the early version. - moxie (SF) 23:00:56 03/23/10 dunno...you might contact Greg to be sure - aliaZ 23:09:00 03/23/10 Would rev matching remedy this? (n/m) - CaliguyPurdue (Selin Design) 02:18:09 03/24/10 rev match an upshift?? (n/m) - sfarrah 14:40:53 03/24/10 The Racelogic speedshift allows for this - CaliguyPurdue (Selin Design) 18:37:20 03/24/10 No problem with my twin disk on the syncros - sparkie 10:12:20 03/24/10 I'm aware of the design intent of the twin disk clutch - aliaZ 12:38:36 03/24/10 I=m*R^2 - sparkie 02:13:06 03/25/10 the weight of the flywheel, clutch cover, and any other - aliaZ 09:33:58 03/25/10 They are all part of the rotational mass - sparkie 10:54:28 03/25/10 not really - aliaZ 12:57:40 03/25/10 Re: not really - sparkie 15:18:53 03/25/10 sigh - aliaZ 16:34:02 03/25/10 You can rev the engine with clutch disengaged - sparkie 11:01:40 03/25/10 Re: You can rev the engine with clutch disengaged - aliaZ 13:03:44 03/25/10 on second thought, Z1's clutch will probably be fine - aliaZ 09:47:30 03/25/10 Feedback I received identified it as a Exedy clutch. - sak01 10:49:04 03/25/10 the exedy clutches on Z1's site are much larger diameter - aliaZ 13:05:15 03/25/10 The feedback I received was incorrect. - sak01 13:58:17 03/25/10 that is what I figured. - aliaZ 14:34:26 03/25/10 The Z1 twin disk is a great clutch, and cheap too. - Wingzerro93 16:25:24 03/24/10
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