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-   -   Rev-matching? (https://www.rx7club.com/1st-generation-specific-1979-1985-18/rev-matching-677648/)

dilbertquad7 08-06-07 11:24 PM

Rev-matching?
 
Okay, I know how rev-matching is done, but does anyone have the specs for the RPM I should have for each gear? Any help would be useful seeing as to how I have no idea about the RPM I need.

--Thanks

Slammed_GSL 08-07-07 12:18 AM

Speed of car + current gear = rpm to match downshift.
If it's smooth then it's right, if it grabs keep practicing.....only way you really get it down is to do it all the time with every downshift, gotta train your brain to do it.
A formula is not going to help you, just practice....

notveryhappyjack 08-07-07 12:42 AM

generally 1000 rpm for each gear.

bugman1973 08-07-07 01:02 AM

like slammed said practice makes perfect that what i do. i first learned on an old vw bettle. very hard to do(small pedals). but i did learn now the rx7 is a breeze. rev matching can make exiting corners so much smoother.

getting it perfect on one car doesnt mean you can be perfect in another car even though it is the same kind of car. my cars rpm for matching wont be the same as yours. just because the way we drive and how the same engines wear in differently through different driving conditions. thats why practice is key

rotarybeat1287 08-07-07 01:20 AM

time... in your car is the best way. you will get a feel for it over time. here in the Mtns of NC/SC doing it going into turns and nailing it dead on helped me. start out slow and just practice. it makes driving less jolting.

I've ridden w/ friends who don't do it and im afraid at some of the hairpins the jolt will surely send us into the bank. ugh. lol.

save a drivetrain... rev-match.

Siraniko 08-07-07 01:27 AM

the best thread ever :icon_tup:

Kentetsu 08-07-07 03:03 AM

You'll never be able to look at the tach and figure "okay, I'm going to down shift and right now I'm at 4000 rpms, so I'll put the clutch in and raise it to 5000 rpms, then let it out".... Don't even try.

All you can do is practice. Like it was said above, when its smooth you'll know you're doing it right. You'll have to learn the feel for it, that's all. And its not like you want to raise the rpms and hold it their while you make your shift, it all happens too fast. Its more like you just "blip" the throttle as you release the clutch.

You might as well be working on heel and toe at the same time, as they are made to work together like that. I started working on all of this close to twenty years ago, and haven't had to conciously think about it for about 18 years. My feet just do their thing, and its always nice and smooth.

82transam 08-07-07 03:38 PM

I'm with kentetsu, might was well go all out and learn rev-matching and heel toe together.... And yea, it took months and months of doing it on my daily commute to really get good at it.
Good luck

1badFB 08-07-07 05:24 PM

http://img.villagephotos.com/p/2004-6/738485/plot1.JPG

courtesy of Peejay.

I always love peoples reaction when I shift without the clutch...they either say Im crazy, or bow down! hahaha

Rotary_Powerd 08-07-07 05:52 PM

Try this, when down shifting do the following, after pressing in the clutch, move the shifter towards the desired gear, but DON'T push it in!!! Gently apply pressure against the shifter in the direction of the shift. While doing this blip the throttle, you'll notice that at a specific RPM the stick will slide into place practically by itself. That is nearly the precise spot in RPMs for that gear at that speed.

After the gear slips in you re-engage the clutch (while of course holding that RPM). Eventually you rev match easier and easier.

steve84GS TII 08-07-07 09:36 PM

Yep,its the same with bikes.....its more of just a blip of the throttle and timing of the clutch.If you have to think and visually match things up,its gonna take too long.
Its not something you can teach so much as something you get a "feel" for.Its less of a problem now on bikes nowadays since they are all coming with torque back-limiting clutches from the factory.


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