superstuddc27

I dont get for what reason you can't skip shift/skip gears? I did a search and it says dont do it because it's bad for the tranny but why? What is the mechanical reason for this? Why is it that you can do it in other cars but not the s2000? Is it just a myth.... is there any proof that it's bad for the tranny?

I think it was recommended NOT to ship gears when UPSHIFTING. Downshifting doesn't seem to matter. I.E. Say I'm in 6th gear approaching a right hand turn that I need to be in 2nd gear for, I would shift directly from 6>2 and revmatch and let off the clutch.


Here is the scenario.. I'm at a red light, the light turns green and I gun it in first. Redline it and go to 2nd. Go up to about 60mph and decide that's enough and want to coast. So I'm maybe at 5000 RPM in 2nd gear and I would go directly to 6th gear (2 > 6) and because I'm upshifting, in that time when I am shifting the RPMs drop enough to be just appropriate for 6th gear @ 60 mph.

Why is this bad? Because if you're not "allowed" to skip gears then in that scenario you would redline 1st, go into 2nd, and then go 2 >3 > 4 > 5 > 6 and that would take a LONG time assuming you're engaging and disengaging the clutch for each gear.
Or maybe I am mistaken and you do not have to press and release the clutch pedal for each gear but you can go from 2nd gear and hold the clutch in, move the shifter into 3,4,5,6 and then release? Which still takes a lot of time but not as long as if you had to literally go through and drive in each higher gear.


I have always had to do that where I'm redlining 1 > 2 and then go directly to 6 when city driving. I normally dont skip any more than that. Or if I'm on the highway and I need to pass quick or get on the onramp, by the time I get to 4th gear I'm going pretty fast and then I just put it into 6th (directly from 4th) to start coasting around 65 mph+. Why bother going to 5th and then 6th when you need to be in 6th right then?


is there a technical explanation for why this is not allowed or is it an old wives tale?

BlakeNFR

This has been covered many times but here's the run down:

You have a very small transmission so the gears are packed in tight. The syncos are not very strong so any stress is magnified.

Double clutching is recommended for downshifting if you're not too smooth.

You will lock out your 5th gear (most of the gears are set in pairs as they are designed (5th-6th for example)).

There's much more but this is all I can think of at 2am. Just avoid the habbt and get used to it.

realblag

Did you search at all? Here I found 2 threads for you. One is the most recent, the other is the grandpaw of S2000 skipshift threads (pay attention to the last part of woodworks first post).

https://www.s2ki.com/s2000/topic/102...ifting-is-bad/
https://www.s2ki.com/s2000/topic/196...odwork+synchro

RMurphy

OP: You have requested technical advice on a mechanical issue. Sounds like a thread for Under The Hood.

D Ro

Here it is directly from a honda service news...

Skip Shifting Is Brutal on
Synchronizers
Gear ratios in 6-speed manual trannies are spaced
close together so you can keep the engine speed
in its optimum range for max power and
acceleration. Shifting to the next higher or lower
gear in a close-ratio tranny causes small changes
in engine speed.
Shifting a close-ratio tranny through its gears by
the numbers puts a very small load on the
synchronizers since they only have to make small
changes to the speed of the mainshaft and the
clutch disc.
Some drivers, though, like to skip shift so they
don’t have to work the clutch pedal and shift lever
as much. They like to accelerate in 1st gear, then
pop it into 3rd gear, then into 5th or 6th. Skip
shifting, though, is really brutal on synchronizers;
it puts a higher demand on them than they were
designed to take. Skip shifting can cause
premature synchronizer wear that can cause the
gears to grind when you shift up or down.
If you’ve got a vehicle in your shop for repeated
damage to the synchronizers, go for a test-drive
with your service customer to see if he or she is
guilty of skip shifting. If that’s the case, remind
him or her skip shifting can be an expensive habit
to break. Any repairs due to skip shifting may be
reviewed and debited by your DPSM.