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Anonymous 08/26/14(Tue)18:11 UTC+1 No.10963575 Report

Can someone tell me how the fuck rev matching works? I understand what the goal is engine revs = transmission revs. BUT how can I know what speed the transmission is spinning at, and than I know perfection is great but is it simply trying to get close? what if I over rev the engine?
>>
Anonymous 08/26/14(Tue)18:14 UTC+1 No.10963585 Report

If you over-rev, it lurches. If you under-rev, it bucks.

If you WAY over-rev, it breaks the tires loose from the road. If you WAY under-rev, it stalls.
>>
Anonymous 08/26/14(Tue)18:17 UTC+1 No.10963594 Report

>>10963575
After a while you get used to the rpm difference. Mine goes about 1500>1250>1000>750 (rpm's between shifting 1-5. You'll learn.
>>
Anonymous 08/26/14(Tue)18:21 UTC+1 No.10963606 Report

>>10963575
you drive along in third gear at 60mph. memorize the engine revs.
Now, when you drive along in fourth at 60mph, and you want to downshift, you know how much throttle you have to apply to rev match (your revs that you memorized earlier)
you get a feeling for that after a while, the ratio's pretty consistent
>>
Anonymous 08/26/14(Tue)19:31 UTC+1 No.10963910 Report

Isn't this really bad for the synchos?
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Anonymous 08/26/14(Tue)19:34 UTC+1 No.10963926 Report

>>10963910
Rev matching is much easier on the synchros.
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Anonymous 08/26/14(Tue)19:39 UTC+1 No.10963940 Report

>>10963910
No, it actually takes a lot of stress off the synchros. If you're doing it right it's better for the synchros than normal shifting.

If you rev match perfectly you don't even need to use the clutch, you can just shift it into gear
>>
Anonymous 08/26/14(Tue)19:42 UTC+1 No.10963950 Report

>>10963575
the same way you remember how to steer the wheel a certain amount to navigate a certain corner
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Anonymous 08/26/14(Tue)19:52 UTC+1 No.10963977 Report

>>10963926
>>10963940
only if you double clutch though, just rev matching without double clutching does not reduce wear on synchros
>>
Anonymous 08/26/14(Tue)19:57 UTC+1 No.10963987 Report

>>10963977
explain
>>
Anonymous 08/26/14(Tue)20:11 UTC+1 No.10964037 Report

>>10963910

If done right, absolutely harmless.
>>
Anonymous 08/26/14(Tue)20:19 UTC+1 No.10964080 Report

>>10963987
I'll try (I'm not a native english speaker, I hope I can explain it understandable)
when you don't double clutch there's no connection between the engine and the transmission. when you now blip the throttle, with the clutch pedal in, you only avoid the engine braking down when letting go of the clutch again. the input shaft of the transmission does not get accelerated, so this acceleration still has to be completed by the synchros.
When double clutching, the engine and the input shaft of the transmission are connected. So when you blip the throttle (while in neutral and clutch pedal not depressed) the input shaft of the transmission gets accelerated. And if you accelerated the input shaft to the right speed, the synchros won't have to do anything anymore.

again, it's hard for me to explain this in english well, I hope you get it at least a little bit

you can watch this video, starting at around 6 min. I think he explains it well
https://www.youtube.com/watch?v=zy0BfG_CG2Y
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