R6 Throttle Tube

Ok if we are going to revive chat about R6 throttle tubes, then I will reiterate what I have said before too

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I have done this mod to my curvy S and it is really easy to do, no extra modding required, just adjust the adjusters on the cables to take up/allow slack. I tend to think people get a bit over excited about the real world effects of this mod. I’ll give you the facts that I found out on a discussion about it and you draw your own conclusions!!

FACT: The stock tube requires 90 degrees rotation from zero to full throttle and the R6 tube requires 72 degrees. So you are gaining (loosing?!?!) 18 deg of twist.

If you were to put that in minutes on a clockface terms 18deg is equivalent to the angel represented by 3 mins!!! Yep that is it, 3 minuets (of a clockface) less twist, put your hand by your watch and simulate it …

3 mins ... thats it ... some people have made out that it ‘transforms’ the throttle behavior, some even saying it makes things over twitchy ... one word … ‘placebo’ (I so wanted to say BS there ) ……

Personally I think the noticeable difference is negligible!! When all is said and done, a R6 tube is ~£7, it does give you wrist that little bit more of an easy time, so my cost benefit analysis still says go for it … just don’t expect any transformations!!

Well while not wishing to be confrontational I have to disagree completely. Look at it another way: the SV's throttle tube requires an extra 25% of twist to reach full throttle as opposed to the R6 tube — can't notice a whole quarter difference? Odd indeed.

The real difference is felt (as posted before) when you snap the throttle open (particularly in a low gear). This allows the fully open carbs to squirt fuel into the engine considerably quicker than if using the standard throttle tube. If you're just using the throttle gently, then I agree you'll likely not notice any difference.

Now, see how statistics can be manipulated?

If you like to rag your bike then it's the cheapest "performance" mod you can make; if you're not a fast rider then personally I wouldn't bother.


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[northwind]

Personally I found the throttle is exactly as fast with either throttle tube, it goes at the speed of my hand. It's purely the comfort and the ease of using full throttle that made the difference. Not "fast action" but "short action".

Yes but if your hand twists at the same maximum rate with each tube, then the R6 one will be 25% faster to fully open the carbs.


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[northwind]

True, but your hand's faster than the throttle will ever call for so that doesn't matter. You can go from stop to stop in the blink of an eye after all. With the 1/5 throw throttle, you still don't twist it as fast as you could.

[21QUEST]

...so are we to believe that non of you peeps with the R6 throttle ever played the game *** jockey when younger
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Why the weak wrist :P

Cheers
Ben

Originally Posted by northwind

True, but your hand's faster than the throttle will ever call for so that doesn't matter. You can go from stop to stop in the blink of an eye after all. With the 1/5 throw throttle, you still don't twist it as fast as you could.

True, but doesn't that negate your point of both being equally as fast? One obviously has to fully open the carbs more than the other, all things being equal. The R6 does so by a factor of 25%, which IMHO is somewhat noticeable .


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[northwind]

I've got a very strong right wrist, I just save it for other things.

Playing pinball.

Originally Posted by jonboy

Well while not wishing to be confrontational I have to disagree completely. Look at it another way: the SV's throttle tube requires an extra 25% of twist to reach full throttle as opposed to the R6 tube — can't notice a whole quarter difference? Odd indeed.

The real difference is felt (as posted before) when you snap the throttle open (particularly in a low gear). This allows the fully open carbs to squirt fuel into the engine considerably quicker than if using the standard throttle tube. If you're just using the throttle gently, then I agree you'll likely not notice any difference.

Now, see how statistics can be manipulated?

If you like to rag your bike then it's the cheapest "performance" mod you can make; if you're not a fast rider then personally I wouldn't bother.


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As nothwind said, it is the speed of the hand!! Also I feel I must point out that with CV carbs (like the SV and many bikes have), the throttle ‘butterfly’ doesn’t directly ‘snap’ the throttle open, this is left to the slider, which operates via airspeed and vacuum, the slider purposely operates slower/more controlled than a quick ‘flick’. So in short, you can flick the throttle wide instantaneously, the speed at which the throttle opens is controlled by something preset!!! So again as nothwind pointed out it is all about the ‘ease’ at which one can attain full throttle, not necessarily the speed.

I have purely added some factual content, I am not saying that the mod isn’t worth doing, just I don’t feel the overall difference in ‘twist’ isnt anything to get excited about and as explained above the massively quicker throttle response bit is welllll by definition of CV carbs …. Bull manure!!

Each to his own then .


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