Throttle turning distance

Just wondering if anyone is having an issue like me with getting to WOT without repositioning your hand on the grip. This is basically having to sort of pull all the way back on the throttle then hold the throttle while trying to move the palm/fingers forward to grab the last few inches to reach WOT...

I have stock cables and throttle tube, all cable slack taken out and it sounds like a tube with bigger cam/diameter will help with this. I'm thinking of using either R1 or more likely R6 tube as described here:

http://www.gsxr.com/showthread.php?t=85278
http://www.gixxer.com/forums/showthread.php?t=213953

 

I can't be the only one!? Bueler?

 

i know what you are saying, as i have small hands but i just set my controls slightly tilted because my hands get numb in certain angles with the brake and clutch, so its not an issue if you just tilt them forward. it remedies what you are asking about

 

I have the control tilted all the way forward also and I wear size XL gloves. WOT is still slightly out of reach. I'll post if this mod makes a noticeable difference.

 

It will. There are alternative throttle tubes with cams that require as little as 1/6 turn to reach WOT. Just search for "quick turn throttle tube" and you'll find a lot of options. One thing to be mindful of is you will also be changing the off-idle and partial-throttle response. Too much of a change will make riding in traffic and parking lots very difficult.

 

back in the day we made quick turn throttles for our dirt bikes by cutting the red spray can extension tubes into 1/4 to 3/8 inch pieces and jamming them in the slot the cable wraps up in. just make sure they fit tight so they don't snag up the cable. don't know if it would work on a xj throttle tube or not, never looked

 

Yeah, that might work. I heard about glueing a zip tie around the outside diameter also...

 

I ended up using a G2 "throttle tamer", smooth from the bottom and still less rotation to reach WOT. The R1 tube was just too jerky and hard to smoothly handle at the low-speeds, just like k-moe said.

 

The GSXR guys do this mod on their bikes. Here's how the stock throttle tubes compare:

GSXR 1/4 turn ratio equals 90 degree twist of throttle for WOT
R1 1/5 turn ratio equals 72 degree twist of throttle for WOT
R6 1/6 turn ratio equals 60 degree twist of throttle for WOT

I was interested in doing this mod, and being that my X has the 1/4 ratio (90 degree twist), I'm considering the G2 Throttle Tamer that's made for the R1 in the 1/5 ratio. Hopefully get the best of both worlds with less rotation to get full throttle, and have no twitchy light throttle.

Did you use one with a 1/4 or 1/5 ratio (made for the R1)?

Tony

 

I chose R1 as the model for the G2 tube, but I'm pretty sure that they don't actually have different versions for all the bikes out there.

G2 tamer uses their 400 cam which is a standardized model. They might taylor the tube itself to different grip lengths, but the cam itself which affects the distance is one-and-only.

I also tried the 050 cam, takes getting used to with on-off partial response. I might go back to it in the future.

 

OK, so the G2 tamer you used is specific to the R1, and it comes with the #400 cam.

So that gave you less distance to achieve full throttle correct? And it also gave you a softer initial throttle opening right?

Also, did you have to cut the end to match your grip length?

 

All tamers come with 400 cam, no model-specific difference in the cams, only the grip length.

In all honesty, the WOT distance is still about 1/4, but smother off the line. Remember, that my stock tube was way more than 1/4 so this has made a good difference.

The length did not need to be modified.

I'd suggest getting the kit from from one of the online suppliers, like motorcycle-superstore, who will let you return it if you are not happy with results.

 

Thanks for the tips and more specific answers to my questions.

I was looking at their website which shows the cams:
http://www.g2ergo.com/store/g2-cams/

I'm going to get a couple of replacement R1 tubes, then break out my dremel and get creative.

 

Cool, let us know how it works out.

 

An interesting "fix" would be to cut and weld the "Quadrant" so that the "idle" part had a larger radius, and the "full throttle" part were closer to the throttle shaft.
.
like the "Nautilus" excercise equipment from the '80's

 

That's probably where they got the idea from. An adjustment to the radius adds or removes the force required, and the distance the cable moves.