Hi Folks, Your opinions on this one please... I have the fortune of owning a 1299S (and the debts that go with that). And have taken to the DQS up and down quite well. However, I'm starting to wonder if I'm doing something wrong, expecting too much or have a fault. Recently at Paul Ricard, I found myself needing to downshift while cranked over to the left and the back end getting a wiggle on when I dropped a gear. Clearly the blipper / clutch combo are not matching the wheel speed quite right there (3rd to 2nd I think it was). EBC is set to 2, race mode engaged, DTC at 5 most of the time as I'm learning where I'm getting slip under power. At Donnington on Tuesday, on the way down the box into the Melbourne hairpin, I found the back end chattering along the road as again the blipper wasn't matching the wheel speed very well. I'm no racer, but top end of the inters group. Suspension has been tweaked by Mark Hill and tyre wear indicates that that isn't an issue (though my heavy investment in beer and cake is bottoming the forks sometimes under bumpy braking). Soooo. Question is, do we think my expectation is off in that the DQS on the way down the box should be near perfectly matching the wheel speeds without causing the bike to be upset. I rode the new s1000RR at LeMans and the downshifting was perfectly smooth by comparison. Cheers folks.
Do you have the throttle closed when downshifting? It has to be so in order for the shifter to work. This requirement makes it important to select the amount of engine braking you can tolerate when running into each corner. Mine is smooth with the throttle closed, not so good with the throttle even a tiny bit open. I sometimes do this inadvertently as I brake. I have to say that on the track I still much prefer to blip the throttle on the downchanges. The downshifted is great on the road, but I like it less so on the track.
I found I was running in too hot and getting a bit out of shape with the blipper at brands the other week and put it down to me not completely shutting down on entry. Tried with shutting off and problem solved
Your DQS detector is failing. GO see your dealer. My 1299 was on it's 4th DQS unit in 18 months when I traded it in.
Does anyone know how it should behave? Even the best clutched downshift at mid corner will create some rear wnd movement. There's only so much the electrics can do...
Mine works perfectly but at slow speeds you can get a small forward lurch. However I only really use it when I am spanking her. All other times I use clutch. Same with upshift. Again if at slow speed or revs theres a small lurch.
It's a gradual thing and tbh I only noticed how bad mine had got when the second one was installed and it was buttery smooth. It was then I realised and noticed the lurching getting worse. One time the bike started blipping itself whilst riding along not touching it. When it's working it should be smooth as butter. When it's bad it will feel notchy or like stamping the lever down through sand or gravel.
@burndownthediscos - do you mean the gear linkage with the loadcell sensor when you say 'DQS detector' or is there some other gubbins that I don't know about yet! Might be time to give it to snells and ask them to tinker? I've barely moved the bike this summer. Working is such an inconvenience
I'd try the Ebc on level 3 for reduced engine braking. When I had my 899 on level 2 a few times when entering a 2nd gear corner changing down from 3rd the rear wheel skipped. On level 3 with reduced engine braking this just about stopped. A good slipper clutch would help further
Remember this isn't using a clutch, it's allowing the ecu to take care of engine, gas and clutch slip
But your still putting back torque thru the clutch. As the revs and rear wheel speed are trying to match. If that was the case all race bikes that now use auto blippers would have no need for a slipper!
