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One throttle cable

Discussion in 'Norton Commando Motorcycles (Classic)' started by madass140, May 21, 2017.

  1. madass140

    madass140 VIP MEMBER

    Joined:
    Nov 6, 2011
  2. pommie john

    pommie john

    Joined:
    Nov 18, 2005
  3. Peter R

    Peter R

    Joined:
    Dec 13, 2010
    Looks good, Triumph triples use a similar setup, works well, with minimal effort on the twistgrip.
     
  4. toppy

    toppy

    Joined:
    Dec 2, 2012
    What's the chances of this becoming another one of your products so we can all enjoy it?

    Would it be hard to go a stage further and use two cables in the modern way one pull up the other pulls back down. As this with mean no need for such a strong internal throttle spring (something would have to locate the needle somehow of course) which would really make a difference to effort required.
     
  5. madass140

    madass140 VIP MEMBER

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    Nov 6, 2011
    well I'll be using this on an upcoming project, whether it goes in to production depends on (1) interest in this conversion (2) production cost)
    I wont entertain a push/pull cable setup.
    I'm having some lighter Amal springs made at the moment.
    As you can see on my sample I have not made provision for the choke cables as I dont need a choke in my climate, but it
    production ones would accept the choke cables
     
  6. grandpaul

    grandpaul VIP MEMBER

    Joined:
    Jan 15, 2008
    Very unique!

    $$??
     
  7. BritTwit

    BritTwit

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    Aug 25, 2009
    Would the carb balance be adjusted with the thumb screws and lock nuts that appear in the video?
     
  8. madass140

    madass140 VIP MEMBER

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    Nov 6, 2011
    yes the old idle screws become redundant and the slides are now set by the adjustable cable pulls. once they are both set, then adjust your idle with the
    left side idle adjuster under the cable wheel. I'll try and post some pics tomorrow.
    This unit is only prototype which I'm happy with, so there would only be minor changes on production units IF I produce them in volume.
    Don
     
  9. BritTwit

    BritTwit

    Joined:
    Aug 25, 2009
    Very clean design.
    Something Amals have needed for years in my opinion.
    Just curious why you say you would not entertain building a push/pull setup.
    Can you elaborate a bit on why you feel this way?
     
  10. baz

    baz VIP MEMBER

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    May 26, 2010
    looks really good ,is it easy to change needle position with this setup?
     
  11. Matchless

    Matchless

    Joined:
    Dec 23, 2010
    I was thinking the same thing. On Triumph/BSA triples it is a pain in the backside to change needle position. If this Commando set up solves that then it would be a great idea.
    Martyn.
     
  12. Onder

    Onder

    Joined:
    May 11, 2010
    +1 on the PIA to connect the slide to the lift wire...no, make that +100!
     
  13. madass140

    madass140 VIP MEMBER

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    Nov 6, 2011
    thanks for the input, The sole idea of this conversion is to eliminate out of sync cables. Now to make it easier to adjust
    needle position without removing the top of the carb... I'll have to put my thinking cap on...
     
  14. baz

    baz VIP MEMBER

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    May 26, 2010
    No not without removing the carb top, although that would be brilliant!, Not sure about a t150 Trident set up that looks like yours, but a t160 really is a pain to change a needle position or slide cutaway,also the seals on the carb tops can be fiddly ,also wear in the bushes just a few thou throws the carbs out of balance, having said all that I'd much rather have a gantry than a cable splitter so mark me down for one , cheers
     
  15. madass140

    madass140 VIP MEMBER

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    Nov 6, 2011
    stay tuned, I'm on the case.
    Don
     
  16. gortnipper

    gortnipper VIP MEMBER

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    Nov 11, 2013
    Like. But I need one in 5he next couple weeks!
     
  17. lcrken

    lcrken VIP MEMBER

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    Mar 15, 2009
    Great idea, Don. Now I just need a couple for MK2 Amals!

    Ken
     
    oldmikew likes this.
  18. madass140

    madass140 VIP MEMBER

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    Nov 6, 2011
  19. Matchless

    Matchless

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    Dec 23, 2010
    Nice work Don. A shame BSA/Triumph didn't do it like that. When are you going in to production & roughly how much?
    Martyn.
     
  20. madass140

    madass140 VIP MEMBER

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    Nov 6, 2011
    Martyn, it will be a while off , I will be making another which will have some changes and if I'm happy with that then I'll look at doing a batch,
    but it wont happen overnight. it will be a while. no idea on cost but I'm sure it will be affordable and a worthwhile investment, I'll certainly be putting them on
    my Amal carbed bikes. Not much chance of me doing them for Mikuni's or MK2 Amals or anything else. For me Amal Premier carbs or Wassell (Premiers} are the go for stock or warmed street bikes
    Don
     

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