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Discussion Starter #1
Is there a way to eliminate the progressiveness of the throttle and have just linear throttle application?
 

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what is progressive throttle?
The throttle pulley where the cable runs on the grip tube isn't round, it's sort of oblong/cam shaped, so that there is slightly less throttle opening at the beginning and progressively more as you turn it more.

It's a safety thing, common on so-called "beginner bikes"
 

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now i feel that initial throttle with the clutch needs me to pull more than higher throttle input.
 

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now i feel that initial throttle with the clutch needs me to pull more than higher throttle input.
Yep, that's exactly how it works...

The only problem with that type of throttle is that you need to release and do a re-grip to get full throttle easily. Not so good for racing, which is why some forum members are changing the tube out for a more linear-acting one.
 

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dont you just twist it to full to get full throttle? i don't have issue on mid range band, however i wish my throttle is more linear.
 

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dont you just twist it to full to get full throttle? i don't have issue on mid range band, however i wish my throttle is more linear.
It bends your wrist way too much to get full throttle without re-gripping. This is pretty typical with progressive throttles. The R6 throttle is linear, as is the R1s.
 

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See here:

http://www.r3-forums.com/forum/289-yamaha-r3-general-discussion/7185-r6-throttle-tube-fits.html

And go to post #33 in this thread for REV2 throttle kit. Mostly for racing but you might like it. You can tailor it to your liking. About $164.

http://www.r3-forums.com/forum/753-yamaha-r3-garage-build-area/6737-track-bike-build-thread.html
Be warned though that if you get a REV2, you'll also need to replace your starter switch. But the good thing is that they give you multiple reels to tune it how you like.
 

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I'm glad I found this thread. I never could quite put my finger on what felt odd about the throttle. Always like I wasn't giving it enough to get going from a stop, but if I tried to add more it seemed too much. This may have to be one of my first mods.
 

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I really noticed this today. Rode the R3 around and it was really difficult to get the bike to go, then remembered the progressive throttle.
Later on rode my Ducati, and didn't think about it and almost lost it, because the throttle is so touchy compared to the R3, I guess I got used to the R3, and forgot how sensitive the Ducati is.
I definitely need to fix the R3 throttle.
 

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Just to be clear, the stock throttle reel itself is NOT progressive (I just looked to be sure). So either it's just too small for some people, or there's something else that's causing it to feel progressive.
 

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Just to be clear, the stock throttle reel itself is NOT progressive (I just looked to be sure). So either it's just too small for some people, or there's something else that's causing it to feel progressive.
Yamaha and all of the reviews talk about the progressive throttle pull, so the part that makes the R3's throttle progressive would have to be the reel/pulley attached down on the throttle body where the throttle cable end attaches there. It must have an eccentric shape....the R3 parts manual isn't clear enough to see how much of a cam shape it has. This part can't be changed easily, if at all.

Jbluetooth stated that the R6 throttle tube makes the pull a bit shorter and you can see in the photo of it that it is very slightly cam shaped vs. the evenly round shape of the stock tube.

The REV2 kit uses a variety of different diameter reels (35, 40, 45, 50mm) on the tube to change the throttle rate; and includes one cam reel for progressive throttle action.
 

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Oh great, that's interesting, I was hoping it would be a simple fix with the reel from a R6 throttle tube. Oh well.
The Rev2 would help some, but wouldn't get around all of it then.

I'm starting to think about selling the Ducati. :) I rode it after the R3 and really the riding position is uncomfortable compared to R3. Maybe I'll trade it in on a ZX10R. I feel better on the R3 just hate the throttle. lol
 

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Oh great, that's interesting, I was hoping it would be a simple fix with the reel from a R6 throttle tube. Oh well.
The Rev2 would help some, but wouldn't get around all of it then.

I'm starting to think about selling the Ducati. :) I rode it after the R3 and really the riding position is uncomfortable compared to R3. Maybe I'll trade it in on a ZX10R. I feel better on the R3 just hate the throttle. lol
Well, there's always the chance that some manufacturer will pick on the chatter about the subject and come to the rescue with an eccentric throttle tube. If it happens at all, though, it might be a while.....
 

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That's a good point. Well, I guess that I can get used to it, and remind myself getting on my other bike to watch the throttle for the first 5 mins. LOL

I may still put a R6 tube on just to give it a quicker twist.
 

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There is only one that is cam-shaped (the orange one). The others are not.
You're correct...the orange one is the cam reel.

From the Motion Pro website:

"Use smaller reels for slower throttle rate and larger reels for faster throttle rate
Included cam reel provides progressive throttle response preferred by some riders"
 

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Discussion Starter #19
Due to the previous posts I took a look at the throttle body to see if the progressiveness of the throttle originates there. It appears that the pulley on the throttle body is itself eccentric. I don't see a part number for this so it may not be possible to replace it by itself without replacing the entire throttle body for $$$. Perhaps someone will come up with a throttle tube that cancels this eccentricness out. If anybody know of such a part, or knows another way to make the throlle linear, pleas let me know.
 

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