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Discussion Starter #1
I recently changed my rear sprocket to 42 stock H2r sprocket on my 19 C h2.

I didn’t experience this following issue till now.

All this in 6th gear. When at 12krpm under WOT the dash lights up and the bike revs a little then bike picks up hard and catches and makes quick final push to 14krpm.
Is this the clutch slipping or could it be the tire slipping and the traction control kicking in.

If it’s the clutch slipping should I reinforce the clutch by adding ebc aftermarket clutch plates?
 

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This model should have the slipper clutch which applies more pressure as the revs increase. What is KTRC set at?
 

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I recently changed my rear sprocket to 42 stock H2r sprocket on my 19 C h2.

I didn’t experience this following issue till now.

All this in 6th gear. When at 12krpm under WOT the dash lights up and the bike revs a little then bike picks up hard and catches and makes quick final push to 14krpm.
Is this the clutch slipping or could it be the tire slipping and the traction control kicking in.

If it’s the clutch slipping should I reinforce the clutch by adding ebc aftermarket clutch plates?
Do you smell burnt clutch?
It sounds like tire slipping to me, if it was the clutch it would bounce off of the limiter, and usually does not regain that top end pull, and if it was just the clutch you would definitely smell that!
 

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Discussion Starter #5
I recently changed my rear sprocket to 42 stock H2r sprocket on my 19 C h2.

I didn’t experience this following issue till now.

All this in 6th gear. When at 12krpm under WOT the dash lights up and the bike revs a little then bike picks up hard and catches and makes quick final push to 14krpm.
Is this the clutch slipping or could it be the tire slipping and the traction control kicking in.

If it’s the clutch slipping should I reinforce the clutch by adding ebc aftermarket clutch plates?
Do you smell burnt clutch?
It sounds like tire slipping to me, if it was the clutch it would bounce off of the limiter, and usually does not regain that top end pull, and if it was just the clutch you would definitely smell that!
No burn smell and yea it hit 12k at 6gear under WOT and then skips and hit hard and pulls away
 

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"then skips and hit hard and pulls away"..this sounds like maybe the plates are reopening?Is it flashed?Don't they start to close around 12K on a stock motor?Maybe turn off your KTRC and see if it still does this.It's possible it could be losing a bit of traction?Maybe.That's pretty **** fast though to be losing the rear.I've run mine wot all the way up past 200.Never felt it do anything but keep pulling.Mine is set to 14,200rpm.I've only hit that a couple of times...never had anything act strange.I have a 19 on the front...
 

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Discussion Starter #8
"then skips and hit hard and pulls away"..this sounds like maybe the plates are reopening?Is it flashed?Don't they start to close around 12K on a stock motor?Maybe turn off your KTRC and see if it still does this.It's possible it could be losing a bit of traction?Maybe.That's pretty **** fast though to be losing the rear.I've run mine wot all the way up past 200.Never felt it do anything but keep pulling.Mine is set to 14,200rpm.I've only hit that a couple of times...never had anything act strange.
Yea it’s fully tuned n all. Yea it definitely at like 189-94 then it skips n dash lights up a bit n then bike kicks forward n pins it to 14k and I’m running away from other bikes.
I’m trying to look down to see what light turns on but can’t seem to focus enough at dash to tell more then upper left orange light
 

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well,you have three orange lamps on the left upper side of the dial.One is check engine light,two is fuel lamp,three is warning lamp...page 43 in the owner's manual.Probably that one lighting up.Might check those warning lamp situations in there.
 

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Clutch slip usually discolors the oil pretty quickly like noticable darkening of oil color during a couple of slip events , and if bad you can smell it if you sniff the inside of the filler plug
 

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FYI The 2016 and up have an assisted clutch. Which means that as the load goes up the clutch pressure gets greater. It is also a slipper clutch and when the drive load goes down too much the clutch will loosen and stop wheel hop.

All the being said if it is a 2016 and up, it is possible for the clutch to slip momentarily, if the load is taken off and put back on suddenly. The springs are few and very light and it depends on that load to maintain clutch pressure.
 

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Discussion Starter #14
It’s weird.
When I had the 18 44 setup this didn’t happen
Maybe it’s the 18 42 setup.
Could be the tire is slipping. Most dudes that ride at those speeds take off the traction’s on their bikes, not h2s but bmw Honda Yamaha other kawai.
Ima try n take off traction control n see what happens.
I’m pleasantly surprised bike still redlines in 6th with -2 in rear.

I did loose a bit of perkiness in acceleration but bike doesn’t wheelie as hard now so that’s a good thing.
 

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" take off the traction’s on their bikes"...uhm...what are you saying?Turning it off?
Yes go into the menu and turn the TC off. I learned this back in 2015 when I took my H2 to its first LSR meeting. The TC interferes too much and it was immediately faster with it set to OFF.
 

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Did turning the TC off manifest as better acceleration as well as presumably, a higher top speed?
 

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Did turning the TC off manifest as better acceleration as well as presumably, a higher top speed?
It does as long as your throttle control is sensitive enough to catch and control any bad wheel spin. I found that the few percent of slippage between the tyre and the track, which is quite normal in LSR, was being sensed by the bike and the TC was operating. I could have played with the settings but switching it off was the answer.

Riding the bike I couldn't feel the TC interfering but people trackside could hear it. One asked if the bike was misfiring. Now it's just a smooth exhaust howl with a little pop when shifting up.

On the road I leave TC on. It's only when doing standing start miles down a straight runway with terminal speeds of (hopefully) over 200 that I turn it to Off.
 

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I see. Interesting. Thanks. I've turned it off. See how it feels. Seems you have to turn it to off each time you start up otherwise defaults to level 1?

Btw, I'll be pulling the plugs soon, now back in country, and will post up.
 

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I see. Interesting. Thanks. I've turned it off. See how it feels. Seems you have to turn it to off each time you start up otherwise defaults to level 1?

Btw, I'll be pulling the plugs soon, now back in country, and will post up.
Yes, a bit of a nuisance but probably safer that way. It only takes about 5 secs on the start line to turn it off.

On my ZZR part of the Ghul reflash was to disable that defaulting and the TC stayed however you set it. Could be something he now does for the H2 as well. Mine is one of the early versions of the ecu flash.
 
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