1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Best cable route for clucth cable

Discussion in 'Norton Commando Motorcycles (Classic)' started by rbt11548, Feb 2, 2009.

  1. rbt11548

    rbt11548

    Joined:
    Dec 20, 2008
    Hi All , which is the best route for the clutch cable?, is it from handlebar lever across the front of the steering head, down the timing side of the frame spine, through the hole at the rear of the main spine where the loom goes through, then down?
    Thanks
     
  2. Keith1069

    Keith1069

    Joined:
    Jan 10, 2005
    Mine runs as you describe but not through the grommet (I use it for the harness only but I could be wrong!) Take it down in front of the side tube, behind the batt tray cross bar/in front of ISO and between the feed and return pipes. That gives the smoothest run which is what I guess you are looking for. I think if you ran it through the grommet it puts in a more of a bend but it would be neater. If you have the right length which is often a bit long depending on the bars you have watch where it sits between the oil tank and batt tray. It can chafe badly here and I slip over a piece of heat shrink as protection.
     
  3. rbt11548

    rbt11548

    Joined:
    Dec 20, 2008
    Hi Keith, yes that is what I'm looking for , smooth run and not too twisty, keeping the grommet just for the harness was in my mind that is why I thought there may be a better way of running it. At present have stnd Euro bars on Interstate Mk3, cable does seem a bit lengthy but not excessively so.
    Thanks, hope you are not snowed in, we are just gatting it heavy now!
     
  4. Keith1069

    Keith1069

    Joined:
    Jan 10, 2005
    Sure isn't riding weather! We've had 6" so far and another heavy fall tonight. I work from home so no excuses there! The warm south eh!!
     
  5. daveh

    daveh

    Joined:
    Jan 22, 2008
    I fitted a new clutch cable recently and tried a few different routings. The best route for me, with Euro Interstate bars, was along the front of the oil tank, in front of the battery tray, over to the left side of the bike, outside the left (primary side) downtube and then underneath the main spine in as straight a line as possible. I have a Taylor type head steady, and I'm not sure if the standard head steady would get in the way. I tried routing it through the grommet and it definitely wasn't the best. Any other route on my bike and the cable was too long to have a nice smooth arc both on the bend around the steering head and where it curves down to the gearbox. It may be different with your bike, though, so you could experiment a bit till you find the easiest pull with the fuel tank in position.
     
  6. rbt11548

    rbt11548

    Joined:
    Dec 20, 2008
    I have a Taylor headsteady too so that gives me even more room. I think it's just a case of perseverance until I find the best route, as you say the grommet is not the best and I want to use that for my loom.
     
  7. 79x100

    79x100

    Joined:
    May 19, 2006
    My 850 Mk111 is round the headstock, down the timing side, over the cradle tubes and downwards behind the front lugs of the battery cradle.

    Through the grommet hole would give a horrible run.
     
  8. swooshdave

    swooshdave

    Joined:
    Apr 15, 2009
    [​IMG]
    In the test run (without the tank) I have the clutch cable running along the right side...

    [​IMG]
    and through the grommet. Then down through the battery tray to the gearbox.

    It doesn't seem too bent. I'll know more later.
     
  9. hobot

    hobot

    Joined:
    Oct 19, 2005
    So far so good,
    Aim is to get a straight shot into the gearbox top.
    Hoses must be accounted for while mocking up for road.

    hobot
     
  10. MarshalNorton

    MarshalNorton

    Joined:
    Jan 30, 2009
    For a 72 combat I used a venhill nylon cable. It is 57" long.
    I started at the bars and hooked it to the lever.
    It travels in a loose bend arced in front of the speedo about a 1/3 of the way up the guage from bottom.
    It travels along the right side of the main spine of frame.
    I used thick black zip ties not snugged just loosely to hold along side of spine.
    You can go through the stock head steady if you like.
    A soft bend behind the stock air box back plate and straight down to outer trans housing opening.
    Nice smooth pull nylon cable helps immensely I'm sure but no binding using the above route.
    Hope this helped
    Marshal
     
  11. daveh

    daveh

    Joined:
    Jan 22, 2008
    Dave — the best result for me was to route it through the spine and the headstock bracing tube over to the left side of the spine, following the route of the left hand carb cable and then between the rear of the airbox and the front of the battery box to get the straightest route to the gearbox. I got the easiest clutch pull with this routing, after trying a few other routes. This may or may not work for you. I have a Taylor type head steady, and I can't visualise if this routing would work with the stock steady.

    Keep up the good work!

    Dave
     
  12. daveh

    daveh

    Joined:
    Jan 22, 2008
    Sorry, Robert, I called you Dave. Wasn't concentrating!
     
  13. MexicoMike

    MexicoMike

    Joined:
    Jan 31, 2010
    Seems to me I recall seeing a Norton tech bulletin about this but I can't locate it at the moment...
     
  14. debby

    debby

    Joined:
    Apr 15, 2004
    There is a diagram in the INOA Tech Digest. That's how I route mine. I don't send it through the grommet. I did find that cable routing can make a big difference in clutch pull.

    Debby
     
  15. gortnipper

    gortnipper VIP MEMBER

    Joined:
    Nov 11, 2013
    I know this thread is old, but I am installing cables on flat (drag) bars for the first time, and am having a bit of an issue with getting the clutch to pull easily with the stock routing as described here and shown at http://www.preservationcycle.com/index. ... temid=1739

    [​IMG]

    I have a new Venhill FL cable for UK bars, and am wondering how others with flat bars have done their routing to get good light pull?
     
  16. kommando

    kommando

    Joined:
    May 7, 2005
    I use the routing as per your pics with Euro bars and have a smooth operating cable, the Euro bars are not completely flat but have a small rise. I also use a Venhill cable.
     
  17. dynodave

    dynodave

    Joined:
    May 28, 2003
    fwiw
    This drawing is lifted out of the INOA tech digest figure 2-7 clutch cable routing, and was drawn by Mike Frick, the then INOA TD editor. I know this, because it was based on my hand drawn submission to him. I was a contributor to that Tech Digest.
    Based on my 5 mile never registered MKIII commando, the original routing WAS through the grommet in the frame web, but I would NEVER use it in practice.
    Since then, I ALWAYS put a loop of 2 or 3 black tie wraps around the back bone tube and forward of the coil mount brackets then under the smaller lower tube. I run all wires and cables untied and inside of the tie wrap loop against the neck, which keeps these items freely moving but not able to touch the tank.
    I only tie the clutch cable at one spot anywhere...where the diagonal frame rail hits the back bone tube as shown on the drawing.
     
  18. Torontonian

    Torontonian

    Joined:
    Dec 28, 2009
    Thanks for that , pulled my MK 111 tank , and yes it was running through the big grommet as per stock. Am re-routing the cable.
     
  19. Chris Zet

    Chris Zet

    Joined:
    Aug 14, 2009
    Hi!

    Another thought routing the clutch cable...

    I always route my cable under the tank, attached loosely with zip ties under the tank mounting brackets, passing the carbies and directly into the gearbox.....

    Got a large manx tank and got a tommaselli condor plus bar....

    I route the cable this way because for one reason [very important for me]:

    if the cable breaks when i am on tour i can change it without detaching any other part of the bike in a few minutes....
     
  20. Torontonian

    Torontonian

    Joined:
    Dec 28, 2009
    Never thought of that. Who needs to pull/lift the tank on the side of the road in the rain. :)
     
    gortnipper likes this.

Share This Page