09 TBW/Clutch interaction
#11
10-23-2008, 09:20 AM
#12
10-23-2008, 09:44 AM
I've stalled my bike twice now taking off from idle, talk about feeling like a rookie!! 
I blamed it on the fact that my last bike, a 100" chopper, was next to
impossible to stall, I could leave from a stop under very low rpm's and
never stalled it.
So I've learned to throttle it up a bit to keep it from stalling but otherwise
I have no complaints concerning the TBW, it's very responsive and I love
not having cables hanging out there. Guess I'll ask about the "fix" next time I'm at a dealer.
I blamed it on the fact that my last bike, a 100" chopper, was next to
impossible to stall, I could leave from a stop under very low rpm's and
never stalled it.
So I've learned to throttle it up a bit to keep it from stalling but otherwise
I have no complaints concerning the TBW, it's very responsive and I love
not having cables hanging out there. Guess I'll ask about the "fix" next time I'm at a dealer.
#13
10-23-2008, 01:50 PM
Road Master
Join Date: Aug 2005
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For what its worth it can be adjusted with the new SERT.
There is a lag built into the system supposedly to prevent the engine bogging down.
TWIST GRIP POSITION %
------- 0 -- 3 -- 20 -- 25--- 30 -- 40 -- 55 -- 70 -- 100
RPM
700 -- 0.0- 1.2- 12.0- 12.0- 12.0- 12.0- 12.0- 12.0- 12.0
750 -- 0.0- 1.2- 17.0- 17.0- 17.0- 17.0- 17.0- 17.0- 17.0
1000 - 0.0- 1.2- 18.0- 23.0- 23.0- 23.0- 23.0- 23.0- 23.0
1250 - 0.0- 1.3- 18.5- 23.5- 28.5- 28.5- 28.5- 28.5- 28.5
1500 - 0.0- 1.5- 19.0- 24.0- 29.0- 39.0- 39.0- 39.0- 39.0
1750 - 0.0- 1.5- 19.0- 24.0- 29.0- 39.0- 54.0- 54.0- 54.0
2000 - 0.0- 1.5- 19.0- 24.0- 29.0- 39.0- 54.0- 69.0- 69.0
3000 - 0.0- 1.5- 19.0- 24.0- 29.0- 39.0- 54.0- 69.0- 99.0
The figures in the columns denote throttle plate %
So at 1000 RPM and 30% trottle, the throttle plate is only open 23%
Hope that makes sense
There is a lag built into the system supposedly to prevent the engine bogging down.
TWIST GRIP POSITION %
------- 0 -- 3 -- 20 -- 25--- 30 -- 40 -- 55 -- 70 -- 100
RPM
700 -- 0.0- 1.2- 12.0- 12.0- 12.0- 12.0- 12.0- 12.0- 12.0
750 -- 0.0- 1.2- 17.0- 17.0- 17.0- 17.0- 17.0- 17.0- 17.0
1000 - 0.0- 1.2- 18.0- 23.0- 23.0- 23.0- 23.0- 23.0- 23.0
1250 - 0.0- 1.3- 18.5- 23.5- 28.5- 28.5- 28.5- 28.5- 28.5
1500 - 0.0- 1.5- 19.0- 24.0- 29.0- 39.0- 39.0- 39.0- 39.0
1750 - 0.0- 1.5- 19.0- 24.0- 29.0- 39.0- 54.0- 54.0- 54.0
2000 - 0.0- 1.5- 19.0- 24.0- 29.0- 39.0- 54.0- 69.0- 69.0
3000 - 0.0- 1.5- 19.0- 24.0- 29.0- 39.0- 54.0- 69.0- 99.0
The figures in the columns denote throttle plate %
So at 1000 RPM and 30% trottle, the throttle plate is only open 23%
Hope that makes sense
I meant to say, this is data from an actual Stg 1 RK map.
#14
10-23-2008, 08:55 PM
Cruiser
Join Date: Jun 2006
Location: Virginia
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You know ... I would have to say there is a significant difference. It could be that I notice it more as I just moved from an 03 carburated Dyna to an 09 RK. The TBW is really nice in most situations; but, when taking a turn from a stop sign, it tends to catch my attention. I also note myself struggling with the RPMs in tight U-turns where I never really noticed it with the carb/clutch interaction before.
I think we'll get used to it. I've noticed that the bikes "lives" in a higher RPM zone when idling than my previous bike did. Even with that, I have to pay attention when working the clutch in slow turns.
Brock
I think we'll get used to it. I've noticed that the bikes "lives" in a higher RPM zone when idling than my previous bike did. Even with that, I have to pay attention when working the clutch in slow turns.
Brock
#15
10-23-2008, 09:44 PM
Well, for my part, I have a complete different experience. Compare to my 07UC I had, the TBW on my 09UC responds as quickly as did my 07. As soon as I turn the throttle, off it goes. Also, compare to my 07, I don't have to give more rpm to shift. In the contrary. with the 07, I had to go up between 2600 and 2900 rpm to shift without lugging the engine. Now, when I shift, I'm usually between 2000 and 2200 rpm and the engine doesn't lug.
#16
10-23-2008, 10:05 PM
Road Warrior
#17
10-24-2008, 09:08 AM
Thanks for all the comments. I guess the bottom line is that the TBW does have a different feel, and requires some getting used to...
Regarding the "tweaking" that can be done by the dealer...well, I think I'll just leave well-enough alone and re-learn the clutch/throttle process to adjust for the unique idiosyncrasies of the TBW.
Regarding the "tweaking" that can be done by the dealer...well, I think I'll just leave well-enough alone and re-learn the clutch/throttle process to adjust for the unique idiosyncrasies of the TBW.
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