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Thread: Cam adjustable throttle on a road bike: anyone using?

  1. #1
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    9th January 2005 - 22:12
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    Cam adjustable throttle on a road bike: anyone using?

    The idea is that the pull on the throttle is not linear: at low throttle openings a given turn results in X pull of the cable, and at higher throttle openings the pull of the cable is greater. So for a bike (like my Street Triple) that has a super sensitive throttle from closed to cracked open, and (particularly round town) it makes it a pleasanter bike to ride.

    Your thoughts callers?

    http://www.g2ergo.com/g2-throttle-cam-system-80.html


    Its not an inexpensive bit of kit, but you know, ano.
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  2. #2
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    24th March 2013 - 19:46
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    lv it but costs to muche

  3. #3
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    25th March 2004 - 17:22
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    Presumably you are on Tri forums?

    Check out the 1050 one they go into these, but also 1st thing to do is try download a different ECU tune, cable costs sod all & SW is free. I've got a cable if you get keen & can be quick with it. Absolute p.o.Piss easy.

    http://www.tiger1050.com/index.php/board,23.0.html

    SW
    http://www.tuneecu.com/
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  4. #4
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    3rd March 2008 - 11:55
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    Looks interesting, could do with something like that for my ST2.

    Same thing used to be achieved on carbs by having odd shaped cable actuators on the butterfly, wonder if the same thing would work on fuel injection throttle bodies.
    Riding cheap crappy old bikes badly since 1987

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  5. #5
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    17th February 2005 - 11:36
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    Quote Originally Posted by HenryDorsetCase View Post
    What you describe is a by product of a poor EFI system, quite likely just the tune and not the hardware though, and as such this will not help. Dave's suggestion is more likely to be effective.

    Some people just never close the throttle fully. It's not a habit I've ever been taken with myself.

  6. #6
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    Quote Originally Posted by imdying View Post
    What you describe is a by product of a poor EFI system, quite likely just the tune and not the hardware though, and as such this will not help. Dave's suggestion is more likely to be effective.

    Some people just never close the throttle fully. It's not a habit I've ever been taken with myself.
    good points all. It is about to get an Arrows 3 > 1 lowboy and will get a tune for that. I suspect the snatchiness off idle is as you say, a less than ideal tune. I had thought that getting a tune involved hours on a dyno and great expense, whereas the mechanical solution is done and dusted for say $150. My scots ancestors prefer the latter over the former.
    I thought elections were decided by angry posts on social media. - F5 Dave

  7. #7
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    I have one on my XT660...
    yer just mod the standrd throttle...
    10mins with a small chain saw file..
    On the XT it helps to stop the surgeing
    by makeing involuntary throttle movements
    smaller so the CPU don't detect them as easy
    and change the fueling ratio between the open
    & closed circuits .. when the CPU detects a
    movement of the throttle it asumes you are going
    to accelerate and jumps to the open fueling circuit
    "richer mixture"... when you don't it jumps back
    to the closed circuit " leaner mixture"..
    On the XT the open circiut has a fuel ratio of 14.7:1
    closed circuit has fuel ratio of 13.6:1... jumping
    between these two ratio's is where the surgeing comes from...
    also helps low speed throttle control...

    mine the first half of the throttle twist
    has a slower cable pull ratio...

    another cheap easy trick is..
    Put a 1om poteniometer on the airbox air temp senser..
    at the twist of a nob you can tell the CPU lies about
    the air temp and the CPU will richen or lean the mixture..
    it makes a big diffrents to the power out put and/or fuel
    useage...The CPU has pre set min & max ratios built in so it won't let
    the fuel air ratio go out side these..
    Pete

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  8. #8
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    Quote Originally Posted by HenryDorsetCase View Post
    . . , whereas the mechanical solution is done and dusted for say $150. My scots ancestors prefer the latter over the former.
    Does it get a stiffy over this?
    http://www.ebay.com/itm/Triumph-Bike...item35afd40c21
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  9. #9
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    Quote Originally Posted by F5 Dave View Post
    I got mine landed for $11... And you are right about it making a huge difference. I saw on another forum that you can now grab an Android app called "Torque" for about $5 and a Bluetooth OBDII dongle and run real time data logging....
    It's all Shits and Giggles until someone Giggles and Shits


  10. #10
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    Quote Originally Posted by HenryDorsetCase View Post
    good points all. It is about to get an Arrows 3 > 1 lowboy and will get a tune for that. I suspect the snatchiness off idle is as you say, a less than ideal tune. I had thought that getting a tune involved hours on a dyno and great expense, whereas the mechanical solution is done and dusted for say $150. My scots ancestors prefer the latter over the former.
    It could very well be that the tune after fitting the pipe will sort it out, give Red at Triple R Racing a call and he'll setup a time to get it on the dyno. It shouldn't be big dollars, you're not looking to eek every last hp out of it.

  11. #11
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    Quote Originally Posted by F5 Dave View Post
    for under $20 it is so worth a look. Plus it is called "VAG" which amuses me because I am 12.
    I thought elections were decided by angry posts on social media. - F5 Dave

  12. #12
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    Try the free (tri approved off road use ho ho) tune & see that it is the bus. You are after throttle response or rather control so a bit of playing could be as well as dyno work, but easier on dyno if you still have improvement desire.
    Don't you look at my accountant.
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  13. #13
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    interesting. The Arrows is a Triumph gen yoo wine accessory, and because the airbox is stock and the pipe retains the O2 sensor, it has completely transformed the thing with the "Arrows" tune.

    I'm a happy camper.
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    I thought elections were decided by angry posts on social media. - F5 Dave

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