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

how much does the orignal horn weigh?

Discussion in 'Norton Commando Motorcycles (Classic)' started by 850commando, Apr 9, 2019.

  1. 850commando

    850commando

    Joined:
    Nov 1, 2014
    I binned my old horn, bu now need to know how much it weighed. i want to locate the shendengen R/R in the horns original location, and need the weight to determine how stout the bracket needs to be....

    anyone?
     
  2. Time Warp

    Time Warp .......back to the 70's. VIP MEMBER

    Joined:
    Dec 3, 2012
    You want someone to actually go and weigh one, they would have to unstick their a$$ from their chair in the age of internet to do so. :D

    IMG_5679.JPG

    I don't know first hand how warm that R/R gets but air flow might be on the needed list, is that location the best ?
     
  3. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004
    1 lb. 10 oz. (with mounting bolt).
     
    nortriubuell likes this.
  4. Stephen Hill

    Stephen Hill

    Joined:
    Oct 28, 2009
    I would not mount anything in the location of the original horn. It's way too hard to get to.

    Stephen Hill
     
    Fullauto likes this.
  5. swooshdave

    swooshdave

    Joined:
    Apr 15, 2009
    I mounted my R/R to an aluminum plate at the back of the battery box. I run a smaller battery so there is room for lots of stuff. Another great location is under the air filter.
     
  6. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    I’d say putting the Shendengen r/r in the stock horn position is doable...

    The trick would be to start with the shendengen unit... and then assemble the rest of the bike around it...
     
    Craig and swooshdave like this.
  7. 850commando

    850commando

    Joined:
    Nov 1, 2014
    Thanks LAB / Time Warp;
    I have a beautiful Stebel Nautilus horn (made in the UK :D) that i want to use on my next build, but it will not fit down there. the shendengen R/R will fit, and there is plenty of air flow through that location. the Shendengen only weighs 12oz
     
    Last edited: Apr 9, 2019
  8. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    I’ll be looking to mount a Shendengen too shortly, please post pics of yours in process if you can.
     
  9. Tornado

    Tornado VIP MEMBER

    Joined:
    Dec 5, 2017
    The original horn bracket is a solid plate of steel, in a sort of triangle. It would be way overkill for mounting an R/R. Mine horn was easyish to remove when I had rear mudguard off and wheel off. I replaced it with a Fiaam FreewayBlaster...which I have used on my other bike to excellent effect in downtown traffic. Mounted in original location but using its own bracket...have heard that is important since bracket and horn work in resonance to generate best output. Best $19 to spend on my bikes!
     
  10. jaydee75

    jaydee75

    Joined:
    Jul 2, 2012
    I've had the Shendig r/r on my Mk3 for a couple of years now and it barely even gets warm to the touch. Mine is located in the battery compartment (Shorai). Heat is not much reason for concern as far as mounting goes.
    Jaydee
     
  11. Mwood7800

    Mwood7800

    Joined:
    Jul 26, 2017
    The horn location on a Norton is just plan stupid. Who thought that one out should be shot
     
  12. Time Warp

    Time Warp .......back to the 70's. VIP MEMBER

    Joined:
    Dec 3, 2012
    No doubt they went on to the front disc brake wheel offset followed by the directive to come up with a brake that felt more wooden than a wagon wheel.
     
  13. acadian

    acadian VIP MEMBER

    Joined:
    Mar 5, 2010
    1 f%#^ing pound!!!! Jeeeezus....

    Anyway, I mounted a cheap flapper horn behind the battery tray

    [​IMG]
     
  14. 850commando

    850commando

    Joined:
    Nov 1, 2014
    i saw your previous post video startup and your horn location. i will have flasher relay in that spot
     
  15. swooshdave

    swooshdave

    Joined:
    Apr 15, 2009
    One theory is that early disc brakes were meant to mimic the wooden feeling of drum brakes as not to scare the customers. Also remember that tires of that vintage were not as sticky as what we can get now so locking up and sliding the front wheel may have been another concern.
     
    nortriubuell likes this.
  16. kerinorton

    kerinorton

    Joined:
    Feb 12, 2013
    I'm not sure why the drama about the location of the horn is going on. I dont have a problem with it. I simply slotted the 2 holes at the bottom of the guard so that [ after removing the rear wheel ] when I remove the two nuts holding the guard at the bottom, then remove the single bolt above them, the guard rotates downwards and away from the horn. [ the 2 bolts holding the horn bracket have to stay in place, as they are used to hold the guard as well. ] Horn is easy to get at then. I have mounted another horn beside the rectifier, and facing the side cover though. My 2 horns now sound like a 60's British cars 2 tone horns. I have had instances where one horn has not worked so having two helps when going for my 6 monthly Wof Inspection.
     
  17. 850commando

    850commando

    Joined:
    Nov 1, 2014
    the original question was; "I binned my old horn, but now need to know how much it weighed. i want to locate the shendengen R/R in the horns original location". - and has been answered.

    interesting side note; the original horn was dead, i had a nice Hella electric on the shelf, so mounted it in the location. in the open air the hella was massively loud, but once bolted down below at best all it would produce is a gentle beep.... so the horn had to be moved. now it has attitude and volume... since the hella single tone unit has no acoustical horn scroll and relies only on the vibration to produce the sound, i'm guessing that the mounting bracket just absorbed the vibration.., anyone out there who is much smarter on the workings of a horn??
     
  18. 850commando

    850commando

    Joined:
    Nov 1, 2014
    i am focused on building a fence for the next few days, but will mock up the bracket for a picture shortly
     
  19. Tornado

    Tornado VIP MEMBER

    Joined:
    Dec 5, 2017
    As I eluded to in a previous reply...many automotive horns are tuned to work in tandeem with their mounting brackets to create the proper resonance for optimum tone/volume. Mounting to anything other than the spec'd bracket will change things, and not for the better. I would suspect your high quality Hella unit was not getting it's intended resonance if you mounted it on a stock Commando bracket.
    I've mounted a low cost ($19 at C.T.) Fiamm FreewayBlaster to the stock location but used the supplied two piece stamped metal bracket and it is teeth shaking loud while on the road. It certainly gets the attention of cars/SUV's at highway speeds either side of me. So the location in front of swingarm is not a problem.
     
    nortriubuell likes this.

Share This Page