3500 t0 5000 rpm stumble (harsh)

[Wistrick]

Bike is an 2012 with a ECU Unleash gen 2 flash...But this issue was before the flash and since new...Miles and the flash have helped....Bike has about 6000 miles on it and has smooth out a huge amount over that time...Trying to just fix one last issue to make it perfect.....When I roll throttle on from 3500 up to 5000 rpm the bike is harsh almost like it struggling hits 5000 rpm and smooths back out...The harder you try and roll throttle on though that area the harsher it seems...It still gets up and goes like it should....Don't know how else to describe it..The fact that it does it in both T and S mode (more pronounced in S and also before the flash makes me wonder if its a mechanical issue.....

anybody have any thoughts..

Dan

 

[Karson]

Bike is an 2012 with a ECU Unleash gen 2 flash...But this issue was before the flash and since new...Miles and the flash have helped....Bike has about 6000 miles on it and has smooth out a huge amount over that time...Trying to just fix one last issue to make it perfect.....When I roll throttle on from 3500 up to 5000 rpm the bike is harsh almost like it struggling hits 5000 rpm and smooths back out...The harder you try and roll throttle on though that area the harsher it seems...It still gets up and goes like it should....Don't know how else to describe it..The fact that it does it in both T and S mode (more pronounced in S and also before the flash makes me wonder if its a mechanical issue.....

anybody have any thoughts..

Dan

What gear are you in when you notice this?

 

[tc9988]

Bike is an 2012 with a ECU Unleash gen 2 flash...But this issue was before the flash and since new...Miles and the flash have helped....Bike has about 6000 miles on it and has smooth out a huge amount over that time...Trying to just fix one last issue to make it perfect.....When I roll throttle on from 3500 up to 5000 rpm the bike is harsh almost like it struggling hits 5000 rpm and smooths back out...The harder you try and roll throttle on though that area the harsher it seems...It still gets up and goes like it should....Don't know how else to describe it..The fact that it does it in both T and S mode (more pronounced in S and also before the flash makes me wonder if its a mechanical issue.....

anybody have any thoughts..

Dan

http://www.yamahasupertenere.com/index.php?topic=7606.285

 

[Wistrick]

I connived this isn't a clutch issue...But a fueling issue...As I understand it the clutch issue rears it head from around 2900 to 3100rpm...Gonna do a TB sync with a 3/4 turn on the left and bump the Co +3 and see if it changes anything.....

Dan

 

[tomatocity]

I connived this isn't a clutch issue...But a fueling issue...As I understand it the clutch issue rears it head from around 2900 to 3100rpm...Gonna do a TB sync with a 3/4 turn on the left and bump the Co +3 and see if it changes anything.....

Dan

IIRC... the 3/4 turn is on riders right side, then adjust the sync on riders left side.

 

[Wistrick]

IIRC... the 3/4 turn is on riders right side, then adjust the sync on riders left side.

yeah I knew that, just typed it in worng thanks

Dan

 

[Wistrick]

well I have to say that the TB sync (3/4 on right), bumping the CO2 to +3 on each cylinder and adding an Arrow slip on pretty much fixed the problem...Its still noticeable but not as bad....Fueling not clutch problem...

Dan