Quickturn throttle

I did this throttle slop remover. Great mod for doing just that; removing the slop. It doesn't decrease travel to wide open throttle though. Not at all.


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GunMoto said:

I think this is exactly what you're after but it's a round-a-bout approach which would require some custom modification. (Given, if there aren't currently any "plug-n-play" options which doesn't seem the case.)

I took a crude measurement of the throttle grip's range of angle and is roughly 65 degrees. (Please, take my measurement lightly for now, lol.)

I assume TB applies a multiplicative factor (x1.43) to the stock throttle sensor output. If so, it would look like this:

• Throttle grip angle.......: 0* ---> 16.25* ---> 32.5* ----> 45.5* ----> 65*
• Stock throttle output....: 0% --> 25% ------> 50% ----> 70% -----> 100%
• Tuneboy throttle output: 0% --> 35.75% --> 71.5% --> 100% ----> 100%

(*calcs above based on linear curve)

So essentially, Tuneboy would reduce the entire throttle grip opening range by 19.5 degrees. So at 45.5 degrees, you would be at 100% throttle output but....................as Tadashi noted, there is nothing "mechanical" to stop the throttle grip at 45.5 degrees--which is where I suggested creating/fabricating a spacer to physically stop the throttle grip at that position. If this can be done, then you you would have a 65 degree throttle become a 45 degree "quick-turn" throttle.

Since tadashi is already running the throttle map, let's just wait and see if he can come up with a physical throttle stop/spacer for the throttle grip.

Let me know what you guys think...

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Thanks for that, it makes perfect sense.

I guess I could get by without having the actual mechanical stop, as long as I knew I was at WOT.

As a side note, most people would be surprised at how much time they TRULY spend at WOT (on the track). Of course we all think "I keep that ..... pinned the whole time..", but in reality that isn't always the case.

When I was on the JDSA Staff we (myself, DiSalvo and Stokes) had a long discussion about it and Brian was telling me about when he first started racing Liter bikes there was so much time when he was actually at 93-96% throttle but didn't realize it. It wasn't until they added the data logging that it was caught. After that, he had to make a mental effort to make sure he was at WOT when he should be. I started doing the same, and I actually knocked 0.7sec off my PB at that track.

Some of it stems from muscle memory (that is what I battle with, because I race multiple bikes and the R6, and even the Grom, both have quick-turn throttles). So you turn your wrist to what you think is WOT, but it actually isn't. And then you get in a habit of just doing that same wrist motion.

Next time you are at the track, pay attention to when you actually do (or don't) have the throttle pinned against the stop. You might surprise yourself.

The mechanical stops should reduce the throw by the amount of slop, so that's a couple mm at least.

Data-logging the throttle-angle is VERY interesting, especially when it's on a bike with traction-control. I run the Aim Solo DL to gather data from the ECU. Haven't hooked it up to my Panigale yet, but on the ZX-10R, I learned how much the ECU was holding the bike back, even with the throttle grip pinned. I bet it's even more so with wheelie control like you 1299 guys have. It helped me tune my TC in. I have to get a new connector for the DL, but I'm going to definitely log it whenever I can get this bike onto the track.

Just finished the spacer. I just need to test to see if TP is exactly at 100%. Tuneboy will not allow this without the bike running so ill have to take it out for a spin later then trim it down or add more material.

tadashi said:

Just finished the spacer. I just need to test to see if TP is exactly at 100%. Tuneboy will not allow this without the bike running so ill have to take it out for a spin later then trim it down or add more material.

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You should be able to see throttle percentage without the bike running. It just needs to be on.

lardawge said:

You should be able to see throttle percentage without the bike running. It just needs to be on.

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It only goes up to 40%. I didn't fiddle with it.

tadashi said:

Just finished the spacer.

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Looks good!

tadashi said:

I just need to test to see if TP is exactly at 100%.

Click to expand...

I assume TB limits TP to 40% at standstill? When you verify if TP reaches 100%, would that be through data logging? Just curious to know more about TB.

I opened the stock throttle to see the operating principle.

Big gear on the grip part driving small gear holding a permanent magnet , turning over a rotational hall sensor.

Talked to my electronics guys and they said an inline pigtail solution would not work.

So I looked into changing the gears, just not enough space available fo an effective modification. Only thing with existing sensor would be a complete makeover. Not sure if ROI is given in that case.

Too bad

tadashi said:

Just finished the spacer. I just need to test to see if TP is exactly at 100%. Tuneboy will not allow this without the bike running so ill have to take it out for a spin later then trim it down or add more material.

Click to expand...

This is my plan as well. Waiting for the Tuneboy to arrive, and I plan to purchase a spare throttle tube and use some plastic with the plastic welder to fill the gap. I like a hard stop at 100%, or with the tune boy, just past it at least.

You may have tried this already, and it is only part of a solution for what you are looking for; however, I used a set of throttle spacers to get rid of that 5 mm of slack at the beginning of the rotation – Panigale Spacers
A cheap fix for part of the problem at US$30 for parts and 20 minutes of time to open the package and install.

mrailing said:

This is my plan as well. Waiting for the Tuneboy to arrive, and I plan to purchase a spare throttle tube and use some plastic with the plastic welder to fill the gap. I like a hard stop at 100%, or with the tune boy, just past it at least.

Click to expand...

You'll have to create spacers on either side of the tube to have a secure stop