R6 Throttle Tube
 

Seeing as we've lost the original threads on the R6 throttle tube conversion I thought I'd start it again.

Cost: Around seven quid (though many thanks to Sudoxe for the freebie!)
Fit: Perfect
Ease of installation: On the naked SV, it's a pain in the @rse, as the bars have to come off to do it properly as there is less play in the throttle cables than with the standard tube and you have to slide the new one on after you've managed to get the cables attached (and what a bugger they were to attach!).
Result: Perfectomundo! After the rear sprocket mod, this has to be second. The bike is so much more responsive and the power comes on so much quicker that you'd swear you had another 10 BHP.

Downside? Nothing really if you've a smooth hand, apart from personally not liking the Yamaha grip as it's a little thicker than the Suzuki one, so I shall probably order one for the SV when I get around to it.

Now with my 46 tooth rear sprocket, 4 degree ignition advance and fifth turn throttle tube (as opposed to the standard bike's quarter turn), a clumsy hand will find it hard to keep the front wheel down in first, and it almost wheelies off the power in second.

So if you have a curvy - do it! :thumbsup:


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Sounds good, It only took a few mins on the pointy/faired to swap over. Whoops..

So...jonboy...When do I get a turn? :lol: :lol: :lol:

Dan

Any time you like.

Any time you like.


:lol:


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I think part numbers would help, the R6 has diffrent tubes for the diffrent years.

I've just picked mine up, and wrote the part no. down, so still have it on a piece of paper at home. I'll post it up later.

Lifted off the svrider forum....

5SL-26240-01-00, comes with a grip.

About £11 ISTR.
This is an 03-04 R6 type tube and fits all curvy's without mods. Slight mod reqd. for the pointy faired, but unfaired needs no mods either according to the thread (might be wrong, ie. i, haggis, am not taking responsibility!)

Re: R6 Throttle Tube
 

I second that
but just to be picky, does the left hand R6 grip fit?

Yes it would have to as the bar diameters are identical as far as I'm aware.


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so will it fit my pointy naked?? or am i going mad?? ??

It will but IIRC you have to slightly mod it!

Excellent I can see this mod being done over the winter :D

Did it make any difference in the difficulty in fitting that your bike has Renthal bars Jonboy?

No that's not an issue, I just couldn't get enough play in the cables and had to assemble the tube off the bars, which meant that the whole thing had to be slid back on, and this was impossible without removing the bars. Not a big deal, I just didn't expect to have to do it.


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Not sure if this link still works. Because it's a personal homepage it is blocked by Websense at work!

http://www.ronlarimer.com/new/sv650/..._throttle.html

No that URL no longer works. All there is is here:

http://www.ronlarimer.com/sv650.html

but I can't see any R6 throttle tube link though.


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Anyone know where I can order one of these on-line?

Found a link for what you need to do to fit it to a pointy....

Click here

Excellent link.


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That's the bugger I was looking for!

Yeah right :lol: .


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Most interesting part II...

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

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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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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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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.

...so are we to believe that non of you peeps with the R6 throttle ever played the game *** jockey when younger
:? :shock: :lol: .

Why the weak wrist :P

Cheers
Ben

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 :wink: .


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

Playing pinball.

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!! :D :takeabow:

Each to his own then ;).


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I'm left handed.

But to throw my thoughts into the mix...

Its worth doing. I found a quicker action at hard acceleration from a slow speed (been side ways before I got used to it). But over all its a comfort mod, I now no longer have to move my hand to get full throttle which makes getting to full faster for me and more comfortable.

But as jonboy said - each to his own. It costs less then £10 so worth a try.

It's the comfort that's been good for me - no more walking my hand round the throttle to use the full range and less movement needed = more relaxed ride and can focus on the road that bit more.

Still no sign of a proper wheelie, but I've not done the sprockets yet...

I've read the threads and have one question.
How does it work!

Does the actual throttle part (where the cables reside) on the tube have bigger circumference, therefore as you twist, you get the cable moving quicker..??

It's something I may do, as it's a cheap comfort/mod thing!!

Yes. All this does is enable you to get to full throttle easier, none of the other garbage. Just means less twist of the wrist to full throttle end of.

I don’t think it is a case of that, I just feel this sort of comment Might lead people to believe that it is going to do more for them than it actually will.

From that statement, my expectations would be high, when in reality and after doing this mod myself remember, the performance difference is zero (not that I expected it too, again see above) and the comfort difference is small, but not irrelevant. So when all is said and done, it does make it that little bit less to twist, which is a bonus and therefore worth the £7 they cost.

I am actually going to modify my original tube to try and increase the diameter significantly and see how I get on as I feel even with the R6 tube, there is still a fair twist there!! :-k

If anyone is interested, the left hand grip is part number 4YR-26241-02-00

So what, I'm selling it and misrepresenting something? Get a grip. It's my opinion and that of others as you can well read. If you have a lack of sensibilities and are unable to tell what I consider to be a major difference (yes major) then sorry, but that really isn't my problem. I was happy to let it rest with my comment above, but you don't seem to want to — odd.


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We ran this on our race SV650's last season as it helped ease the pain of having to wind the throttle onto the stop by a double twist - if you understand what i mean!.

I have now got a proper quick action throttle which is adjustable.

The mod doesnt make the bike quicker or add any BHP. It just makes it easier to wind the throttle open..thats all.

Although do be careful as we have seen far too many road bikes with this mod that have been not adjusted properly and only open the throttle 3/4's full and dont allow it to be opened fully :wink:

Ohhhh easy there, have I upset you by voicing my (and others it seems) experience/opinions on this mod; just because they don't align with yours??

There is no problem you posting what you think, is there a problem with me posting what I think??

Or are the facts I have highlighted simply getting in the way of a good story here?!?! :lol:

No, I don't mind people posting anything they like, however it's the way they post that counts, and if anyone was trying to manipulate the facts it really wasn't me.

Obviously :wink: . However it does mean that the throttle can be opened quicker and therefore the power comes in quicker, and in this case 25% quicker, which makes the bike more responsive and have the appearance of being a little more powerful, hence my original comment of it seeming to have an extra 10 bhp in the first three gears (in MY opinion).

For seven odd quid, it's a great mod, which others have also agreed with. Now if anyone feels this ain't so, then fair dues, we're all entitled to our own opinion :roll: .


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