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To be honest I wouldn't trust those guys who did the clutch service the last time. You might want to check some faq pages on the site sponsor and-or order Bentley manual that covers many tech details on how stuff works and troubleshooting of almost all C900 components (check eEuroparts.com for new and ebay for used ones).
As for the trick with neutral gear - actually it depends on whether you're shifting upwards (e.g. III -> IV) or downwards (e.g. III -> II). There's a technique of gearshifting w/o a single touch of the clutch pedal. All you need is to release all the load from engine to release the current gear and synchronize engine RPM with the current wheel RPM. Sounds moonspeak? ok...
There's an input shaft in the transmission that is connected to the engine (via clutch system that breaks this connection when you step on the clutch pedal and restores once you step off) and the output shaft that is continuously connected to the wheels (front ones in a case of fwd cars; C900 is FWD - front wheel drive - car). If these shafts are having the same angle speed (the same rpm) then you don't need to work with the clutch.
E.g.: RPM of input shaft (engine) = 0 and RPM of wheels = 0 - engine off and car is stopped, e.g. parked. You can play with the stick as much as you want and there's no need to hit the clutch pedal.
Lets assume you're coasting with the speed S. In this case the output shaft has about Z RPMs. Since each gear is having its own ration there are severals appropriate RPMs for input shaft (that is connected to engine) for I, II, III, IV and V gears to be engaged: A, B, C, D and E.
E.g.: (note, these numbers are span out of thin air - just to draw a picture; don't take them as truthful) if your speed is 30 mph then you need either 6000 rpm to get it on the I gear, 4500 rpm for the II gear, 3500 rpm for the III gear, 2000 rpm for the IV gear and 1000 rpm for the V gear.
So according to this picture if you hit 30 mph in the 2nd gear and would like to shift to the 3rd you need step off the acc pedal a bit to disengage it and get about 3500 RPM on the N and then you can engage the 3rd gear swimmingly.
If you're speeding down and you get 30 mph on the 3rd and would like to go the 2nd then get out of the 3rd and spin it up to 4500 and your 2nd gear can be engaged easily.
Hm... If it's all new to you then just trust me that when gearboxes had no synchros drivers had to shift into N gear when shifting upwards in order to... just in order to get some sort of smooth gearshifting.
Zig
posted by 83.237.4...
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