TTS speed limiter issues
Thread Starter
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Tourer
Joined: Apr 2012
Posts: 250
Likes: 22
From: New Jersey
I just got off the phone with the tuner who tuned the bike and first presented the issue to me. He recalled the same thing I did and that was when the data was compared of the good runs on the dyno, and the ones that fell off, the timing, TPS and the fuel (BPW) remained the same! So while there is something going on with this bike there is more that's not known then it being a TTS Speed Limiter issue.
HD EFI Guru
Joined: Jan 2008
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so where do I look? I agree it strange that after we plugged the speed sensor back in it started working right but, I can not duplicate the unlimited condition on the road. the dyno logs show the speed drop off while rpm climbs. I checked the clutch but there is no evidence of slippage. It looks new. i sent you the dyno logs also.
Seasoned HDF Member
Joined: Dec 2005
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From: poway
so where do I look? I agree it strange that after we plugged the speed sensor back in it started working right but, I can not duplicate the unlimited condition on the road. the dyno logs show the speed drop off while rpm climbs. I checked the clutch but there is no evidence of slippage. It looks new. i sent you the dyno logs also.
You say here that the speed drops off while rpms climb and you checked the clutch with no evidence of slipping. That is really an impossibility. How did you check the clutch?
BTW I assumed that "5600rpm@131in 5th and 5100rpm@131 (in 6th?)" were valid readings. The first isn't. With stock gearing, 5600 RPM in 5th should be about 125 on a bagger. 5100 in 6th would be about 134 (close enough)
Thread Starter
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Tourer
Joined: Apr 2012
Posts: 250
Likes: 22
From: New Jersey
This is bothersome..
You say here that the speed drops off while rpms climb and you checked the clutch with no evidence of slipping. That is really an impossibility. How did you check the clutch?
BTW I assumed that "5600rpm@131in 5th and 5100rpm@131 (in 6th?)" were valid readings. The first isn't. With stock gearing, 5600 RPM in 5th should be about 125 on a bagger. 5100 in 6th would be about 134 (close enough)
You say here that the speed drops off while rpms climb and you checked the clutch with no evidence of slipping. That is really an impossibility. How did you check the clutch?
BTW I assumed that "5600rpm@131in 5th and 5100rpm@131 (in 6th?)" were valid readings. The first isn't. With stock gearing, 5600 RPM in 5th should be about 125 on a bagger. 5100 in 6th would be about 134 (close enough)
HD EFI Guru
Joined: Jan 2008
Posts: 4,494
Likes: 4,780
This is bothersome..
You say here that the speed drops off while rpms climb and you checked the clutch with no evidence of slipping. That is really an impossibility. How did you check the clutch?
BTW I assumed that "5600rpm@131in 5th and 5100rpm@131 (in 6th?)" were valid readings. The first isn't. With stock gearing, 5600 RPM in 5th should be about 125 on a bagger. 5100 in 6th would be about 134 (close enough)
You say here that the speed drops off while rpms climb and you checked the clutch with no evidence of slipping. That is really an impossibility. How did you check the clutch?
BTW I assumed that "5600rpm@131in 5th and 5100rpm@131 (in 6th?)" were valid readings. The first isn't. With stock gearing, 5600 RPM in 5th should be about 125 on a bagger. 5100 in 6th would be about 134 (close enough)
Last edited by Steve Cole; Jun 20, 2022 at 07:56 PM.
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,936
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From: poway
You won't get heat damage unless the clutch is completely gone. My DX would blow through the clutch at about 4500 up. Pulled it apart and everything looked fine. The hint that the clutch is slipping is that your primary oil turns black. Still it can slip on the power stroke and still hook up on the up stroke. You won't feel that.
Last edited by Max Headflow; Jun 20, 2022 at 11:01 PM.
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Thanks!
T.