'14 1199 R /w Ducati Performance GP shift sensor

nvetro · Mar 30, 2015

Sooo...I have two track bikes with quick shifters one a bazzaz and one a power commander so I get how they work

I realized something, on my 2014 (which I bought used with 900 miles on it) equipped with the Ducati Performance GP shift sensor (I also have the stock unit in the box). I have NEVER gotten a clutches upshift to happen, I THOUGHT maybe with Ducati's (my first time owning one) you needed to be WOT or really pushing hard and in the high RPM range for it to work, from what I've read this is not the case and it should work almost all the time.

I spoke to the original owner, who I am in contact with today and wouldn't lie about this said it always worked and never gave him any issues. Any thoughts on this?

Also how do I troubleshoot this, I haven't tried anything except make sure DQS is set to ON and push down on the lever to upshift. Should I try to toggle DQS on-off-on or something?

Help

double0 · Mar 30, 2015

That's odd. The clutchless upshifts should work regardless...unless of course it is turned off. If the previous owner claims it worked for him and doesn't work for you and no changes have been made, i wouldn't even know where to begin troubleshooting. Upshifts from first to second gear is a bit harsh unless you're heavy on the throttle but the rest of the gears are noticeably smoother. Because of this, I've gotten into the habit of using the clutch whenever i shift from first to second. Rest of the gears are shiftedvia DQS....unless I'm hard on the throttle off the line.

Maybe try switchin back to standard shift n see if it works.

chrissa · Mar 31, 2015

Try another test. Can you upshift smoothly enough by simply rolling off the throttle a bit? Or how about coasting with the throttle completely closed? That's all the quick-shift does, is kill the ignition for a split second to unload the transmission. If that works, it probably rules out any mechanical problems with the transmission.

Phl · Mar 31, 2015

hmm, try this:
0. make sure it's actually a GP-shift capable part number and not just a regular one.
1. check connections of the QS connector
2. take off shift rod and open black cover, this will expose switch and spring, take out spring and see if switch gets hit by moving rod.
3.take multimeter and contact terminals of switch connector, actuate switch manually and check for conductance

nvetro · Apr 1, 2015

It's definitely a GP shift Ducati Performance shift rod sensor, I rolled off the throttle and tried to up shift (by pressing down on the lever of course) and it the quick shifter was definitely not working, pressed on it pretty hard too and no go.

Thanks Phl, I'll try that this weekend.

nvetro · Apr 11, 2015

Dam sorry this took so long, I took off the quick shifter and took off the black sensor housing. I tested continuity at the connector by pressings the plastic plunger in the sensor housing and continuity is fine.

Moving onto the shift rod itself I see a metal dowl that is supposed to move and triggers he plastic sensor, pretty simple I setup. Weird thing is this down feels VERY solid and stuck almost like it's not supposed to move but it has to. Trying to move the rod in and out does nothing and trying to move the down on my own also doesn't make it budge.

Looking at my std shift rod it's the same setup only reversed and that dowl also doesn't move.

One would think I should bid able to activate that dowl moving and hitting the senso by pushing or pulling on the rod simulating the foot lever but neither the go shift or std shift allow that by hand.

What's my next step? How to I make sure the rod is ok and also I assume the next step after that is he far end of the connector at the ecu? Another question with the dqs now disconnected the bike dash still shows DQS ON that normal?

nvetro · Apr 11, 2015

Soooo....another update....I put the GP shift sensor back on the bike and left the connector disconnected to test continuity when pressing the foot shifter lever and nothing, which kinda confirms that little dowl inside the housing isn't moving to trigger the spring switch.

Anyone have any ideas?

Here is the sensor by the way and the dowl that I am referring to that won't move:

nvetro · Apr 12, 2015

anyone?

Phl · Apr 12, 2015

Yup. The pin has to contact the Orange button of the switch. Try flooding the hole of the pin /dowel with wd40 and see if you get it to move.
If not, open it. There's a sping inside, might be jammed.

nvetro · Apr 12, 2015

How do to open the metal housing? Or do I need to unscrew that large metal
nut where the rod goes in?

nvetro · Apr 12, 2015

Also, are you saying the dowl pin should move when I pull the rod with it in my hand? Have you move it by hand before? I ask because my std shift rod also is not moveable by hand. Your thought is its stuck and maybe WD40 can help?

bp7178 · Apr 13, 2015

Is the transmission lever, where it connects the QS to the spline shaft on the transmission setup correctly for GP (reverse) shifts?

Have you tried reverting to the regular QS?

nvetro · Apr 13, 2015

Yep it's setup correctly, I even references the gp shift sensor instructions from Ducati it's a VERY simple setup. The fact that I can't move the plunger by hand on either shift sensor (std or gp) concerns me

bp7178 · Apr 13, 2015

Does the bike work correctly with the standard QS?

nvetro · Apr 13, 2015

I didn't go down that route yet because I'll have to flip the shift arm and I think both are kinda in this "frozen" state maybe.

Phl · Apr 13, 2015

nvetro said:
How do to open the metal housing? Or do I need to unscrew that large metal
nut where the rod goes in?

well, this is a pull setup, so you would have to pull it apart to see the pin moving towards the switch.

yes, you should be able to open it at the nut.

bp7178 · Apr 13, 2015

nvetro said:
I didn't go down that route yet because I'll have to flip the shift arm and I think both are kinda in this "frozen" state maybe.

Its not very probable that you have two different parts, which function in a similar way albeit different directions, exhibiting the exact same symptom.

Verifying that the standard QS is working will also eliminate any possible electrical causes.

nvetro · Apr 13, 2015

and would you agree I should be able to pull the rod and watch the metal dowel move? It shouldn't be as tight as it is right?

chrissa · Apr 13, 2015

nvetro said:
It's definitely a GP shift Ducati Performance shift rod sensor, I rolled off the throttle and tried to up shift (by pressing down on the lever of course) and it the quick shifter was definitely not working, pressed on it pretty hard too and no go.

Thanks Phl, I'll try that this weekend.

Not being able to shift even when rolling off the throttle is a problem. You don't need a working quick shifter to shift when you roll the throttle off. The quick shifter does the same thing as rolling off the throttle which is unload the transmission for the split second you bust off the shift.

Your bike shifts smoothly when you pull the clutch in?

bp7178 · Apr 13, 2015

nvetro said:
and would you agree I should be able to pull the rod and watch the metal dowel move? It shouldn't be as tight as it is right?

I never took it a part to see. It makes sense that there is a pretty stiff spring in there, it is a foot and not a finger actuated control after all.

'14 1199 R /w Ducati Performance GP shift sensor

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