Rev Match System Poll

Does your CTR rev match system work with block changes?


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Arcam

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In the UK it would appear we have a number of ways the Rev match system seems to work, for example on my Dec 2018 CTR the RMS does not work with block changes, but other owners report their car's do work with block changed.

I guess we all know that you need to be above 2k RPM for it to work in the first place but I am interested to see what other owner's experiences are.

Just to be clear, a block change is one where you shift to a non adjecent gear, so 4th to 3rd is NOT a block change, 5th to 3rd, 6th to 4th, 6th to 3rd are block changes.
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ManfromRI

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Yea mine works from 6th-3rd, 6th-4th,etc...
I have a 2017
 

elmerzasty

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On my 2017 CTR the RMS works at 99,9% a time in R mode. In sport and comfort it works at 25% at a time. I have no idea why that is so.
 

evolute

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Mine works as well, but I also go through the gate for the middle gear. For example, if I am shifting from 5 to 3, I would have the clutch in but still go through 4.
 

boosted180sx

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works perfectly fine for me.
rev match works 100% of the time for me as long as i'm meeting the requirements.
 


Naruske

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Yea mine works fine too. There are times when im cruising in 6th gear and i know the rev match isnt gonna kick in for 5th so i go straight into 4th. May wonna get it checked out if it's not working properly!
 

Lust

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Isn’t it bad to skip gears like that? I could be mistaken but I thought the synchros are under more load when skipping because it has to slow down or speed up faster
 
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Arcam

Arcam

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Mine works as well, but I also go through the gate for the middle gear. For example, if I am shifting from 5 to 3, I would have the clutch in but still go through 4.
Ah, that would trigger the RMS by going via the next gear down even if the clutch was not released, it would appear that the issue it with my car and I will raise it at a dealer visit in December.
 
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Arcam

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Isn’t it bad to skip gears like that? I could be mistaken but I thought the synchros are under more load when skipping because it has to slow down or speed up faster
Corrected reply: I incorrectly stated the following "When the RMS works correctly there should be little to no load on the synchro as the speed of the gears is matched."

This is wrong and I should have know better, double de-clutching will reduce the load on the syncros as part of a engine blip to the correct RMP during downshift.

What the RMS is for it to stop the potential lock up of the driving wheels during a downshift and to provide a smoother transition to the next gear so that it feels seamless, this is more important in rear wheel drive vehicles due to the weight transfer that occurs during deceleration.
 
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ez12a

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When the RMS works correctly there should be little to no load on the synchro as the speed of the gears is matched.
This isnt correct. You aren't synchronizing the input shaft with the output shaft when revmatching with the clutch pushed in.

Unless you are double clutching, there will be wear on the synchros just downshifting shifting from gear to gear. Rev match alone does not remove synchros out of the equation. Rev-matching as far as wear is concerned only saves the clutch.

When skip shifting, you are forcing the respective synchro to work harder synchronize the shafts. Sequentially shifting down will spread that speed differential over more synchros.

In comfort mode at least, auto rev match does not occur below 2k RPM. If you shift anywhere above that, it will work.

It will also work when skip shifting, provided you are above 2k RPM. I've accidentally shifted into a lower gear than intended (without releasing the clutch) and it will rev match.
 
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Lust

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This isnt correct. You aren't synchronizing the input shaft with the output shaft when revmatching with the clutch pushed in.

Unless you are double clutching, there will be wear on the synchros just downshifting shifting from gear to gear. Rev match alone does not remove synchros out of the equation. Rev-matching as far as wear is concerned only saves the clutch.

When skip shifting, you are forcing the respective synchro to work harder synchronize the shafts. Sequentially shifting down will spread that speed differential over more synchros.

In comfort mode at least, auto rev match does not occur below 2k RPM. If you shift anywhere above that, it will work.

It will also work when skip shifting, provided you are above 2k RPM. I've accidentally shifted into a lower gear than intended (without releasing the clutch) and it will rev match.
Thanks for confirming. Though sometimes my downshifts are smoother when I skip shift. I don't know if this is better since its smoother or if I should row through the gears to help the syncrhos. Maybe someone can chime in.
 
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Arcam

Arcam

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This isnt correct. You aren't synchronizing the input shaft with the output shaft when revmatching with the clutch pushed in.

Unless you are double clutching, there will be wear on the synchros just downshifting shifting from gear to gear. Rev match alone does not remove synchros out of the equation. Rev-matching as far as wear is concerned only saves the clutch.....
You are quite correct Sir and I do know better, I have corrected my original reply and elaborated on its intended use.
 

tinyman392

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In the UK it would appear we have a number of ways the Rev match system seems to work, for example on my Dec 2018 CTR the RMS does not work with block changes, but other owners report their car's do work with block changed.

I guess we all know that you need to be above 2k RPM for it to work in the first place but I am interested to see what other owner's experiences are.

Just to be clear, a block change is one where you shift to a non adjecent gear, so 4th to 3rd is NOT a block change, 5th to 3rd, 6th to 4th, 6th to 3rd are block changes.
The way my rev match system works:
  • Above 2000 RPM: in any gear to any gear (with exception of 1st), will rev match.
  • Below 2000 RPM: will only rev match when shifting down 2 or more gears (block shift/change, with exception of going into 1st). The rev match is excruciatingly slow and you have to wait for it. I also found that the system will only do the rev match if you're above a certain speed (about 20MPH). So if you're cruising in 6th gear going 45 (RPM < 2000), you can block shift into 4th gear and the car should rev match very slowly.
Edit: I should note that the above is for comfort and sport modes. My +R will rev match just about anything above 20MPH whether it is sequential or block regardless of RPM.

Edit 2: I'm in a 2018 USDM model.
 

Mcclaughry95

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Works perfect on mine even when it locks me out of 4th daily it rev matches like I made it into gear.
 

tinyman392

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Works perfect on mine even when it locks me out of 4th daily it rev matches like I made it into gear.
Mine did this too when I had lockout/popout issues. Basically it would make it into gear, then pop out of gear :p
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