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Author Topic: Fast throttle cam. Get one, just go and get it!  (Read 8337 times)
stopintime
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« on: April 09, 2009, 10:03:05 AM »


It's very simple - full throttle with only 75% of the twist, compared to stock. It feels even less.

I was distracted by the long travel, had to change my grip before hitting it or end up with my wrist too low on full throttle. I'm on a 800, so full throttle is more relevant for me than if you're on a S4R. Now, it's much more effective - racier if you like Cool 

I think I found a mod to compete with the 14t sprocket for effective and cheap - $47 and so worth it waytogo

http://www.electraeon.com/throttlecam.html


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EEL
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« Reply #1 on: April 09, 2009, 10:23:23 AM »

My brain's not following how this thing works.. I'm all confused. Does it hit the throttle stop faster? the website says its a linear rate - 25% throttle = 25% at the cam.

Its thats the case, why would the throttle not twist the same amount?

Dont get me wrong, its a great idea. It just seems like you're changing lowering the amount the butterfly valves open.. Hence your new 100% throttle is actually 75% of what was capable before..

I got to be thinking of this backwards or something..
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stopintime
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« Reply #2 on: April 09, 2009, 10:55:29 AM »

My brain's not following how this thing works.. I'm all confused. Does it hit the throttle stop faster? the website says its a linear rate - 25% throttle = 25% at the cam.

Its thats the case, why would the throttle not twist the same amount?

Dont get me wrong, its a great idea. It just seems like you're changing lowering the amount the butterfly valves open.. Hence your new 100% throttle is actually 75% of what was capable before..

I got to be thinking of this backwards or something..



It will fully open the butterfly valves with only 75% of the twist of the grip.

The difference is the diameter of the cam. I see it as different gearing. If you imagine a very small cam, it would rotate to full throttle with very little movement/pulling from the wire.

The "linear rate/action" has to do with the shape of the cam - not important, because I think stock cams are linear as well.
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hypurone
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« Reply #3 on: April 09, 2009, 11:44:19 AM »

Nice find!!  waytogo Called em to see if it'll fit my RS (no answer, left vm). On the site they say no for 998, 999, 749 but not sure if that is just the throttle body setup on those bikes or for all 998 motors. Def gonna get one if I can...
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colin748916
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« Reply #4 on: April 09, 2009, 11:48:43 AM »

I would like one if it will fit the DS engine of the S2R1000. Looks like a non fit, anyone know if the DS has the same trottle cam as the 998+999?
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Triple J
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« Reply #5 on: April 09, 2009, 11:55:44 AM »

Yoyodyne makes a 1/4 turn throttle which is essentially the same thing.
http://www.yoyodyneti.com/ProductInfo.aspx?productid=E80061

Evoluzione also makes something similar, which I have on my 848...it's nice.  Cool
http://tinyurl.com/cmqone
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Bun-bun
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« Reply #6 on: April 09, 2009, 01:12:49 PM »

Comes in any color you like, as long as it's red.  bang head
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« Reply #7 on: April 09, 2009, 03:14:05 PM »

Comes in any color you like, as long as it's red.  bang head

Not true. I emailed the guy who makes them and he picked one out for me before he sent a batch to the anodizer. So it also comes in "Natural" if you're willing to wait  Grin

And a big  waytogo on this mod. It took less than a day of riding to get used to the quicker throttle response, but man it makes getting on the gas easier.

Downside: Slightly more pressure on your wrist on long rides (shorter turn means more strength needed to turn the throttle)
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stopintime
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« Reply #8 on: April 09, 2009, 04:00:43 PM »

Not true. I emailed the guy who makes them and he picked one out for me before he sent a batch to the anodizer. So it also comes in "Natural" if you're willing to wait  Grin

And a big  waytogo on this mod. It took less than a day of riding to get used to the quicker throttle response, but man it makes getting on the gas easier.

Downside: Slightly more pressure on your wrist on long rides (shorter turn means more strength needed to turn the throttle)

Yeah - it's quite a lot easier to get it going with this installed. Along with my clip on mod I rerouted the throttle wire, almost no resistance AND the quick cam - I feel like I have a lightened fly wheel.

I experienced the opposite from you with the wrist issue, but that might be because of the rerouting result I got.

Yoyodyne makes a 1/4 turn throttle which is essentially the same thing.
http://www.yoyodyneti.com/ProductInfo.aspx?productid=E80061

Evoluzione also makes something similar, which I have on my 848...it's nice.  Cool
http://tinyurl.com/cmqone


The Yoyodyne seems to come with several gearing options as well - double vroom waytogo

Evoluzione is more advanced - they supply slower action at first and then faster action when you get closer to full throttle - smart waytogo

I would like one if it will fit the DS engine of the S2R1000. Looks like a non fit, anyone know if the DS has the same trottle cam as the 998+999?

Hey Colin,

why wouldn't it fit the S2R1000 - doesn't your cam look the same as mine?
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alexisonfire
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« Reply #9 on: April 09, 2009, 05:20:32 PM »

I'm about to order the 14T sprocket.  Maybe I'll slap the cam and sprocket on at the same time.   Evil
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ghosthound
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« Reply #10 on: April 10, 2009, 06:30:07 AM »

im lost... it says 75% turn of the wrist = 75% throttle opening yet it says that at 75% wrist turn, you get 100% throttle opening.
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redial
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« Reply #11 on: April 10, 2009, 06:43:11 AM »

im lost... it says 75% turn of the wrist = 75% throttle opening yet it says that at 75% wrist turn, you get 100% throttle opening.

the first 75% = 75% they are talking about the rate of throttle opening. As in the evolutions one mentioned, the rate of throttle opening (% of throttle open for % of wrist turn) is not the same accross the range
example of a variable throttle: from idle, you twist your wrist 10% and the throttle opens 5%, but if you are already twisting to 90%, the last 10% you twist, the throttles open 15% (just a fictional example)
on stock, the rate is the same whether you are just getting on it all the way to wide open throttle,. ie 10% of wrist action always = 10% of the throttle opening hope that makes sense
« Last Edit: April 10, 2009, 06:46:16 AM by redial » Logged
DucHead
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« Reply #12 on: April 10, 2009, 06:44:14 AM »

When you loosen the nut to remove the throttle cam, should you brace the cam?  It seems that the nut is on there pretty tight, and just turning it with a wrench will put too much pressure on the butterflies.
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alexisonfire
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« Reply #13 on: April 10, 2009, 06:55:12 AM »

1.im lost... it says 75% turn of the wrist = 75% throttle opening

2. yet it says that at 75% wrist turn, you get 100% throttle opening.

They are describing two different things. 

The first:
The throttle input is linear.  A 1/4 turn of the wrist means the throttle valve has been opened 1/4 of it's span.  A 3/4 turn of the wrist means the throttle valve has been opened 3/4 of it's span.

The second:
They are comparing the scale of their aftermarket cam to the stock one.  A full turn of the wrist with the new throttle cam provides you with 100% throttle opening, however, the position of your hand is only 3/4 of what it would be with the stock cam. 
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supertjeduc
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« Reply #14 on: April 10, 2009, 07:06:40 AM »

I have something like this
http://www.splatshop.co.uk/controls/domino-fast-action-throttle.html
Mine is by brembo
Think it works the same (on the other end)
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