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Thread: Which OEM shock for CX500 mono-shock conversion

  1. #11
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    Quote Originally Posted by dbjac View Post
    Yeah, but... this will require an understanding of the force and moment applied to the shock, as well as the total travel, dampening, and spring rate.

    Are you going to hoop over the rear wheel, with a shock between that and the spine?

    Are you going to imitate the GL500 style swing arm and mount from in front of the rear wheel up to the spine?

    Are you going to have a pull-type shock linkage mounted under the engine?

    Do you weigh 120 kg with a 100kg pillion? Or will you make it a single seater?

    Like Murray said, come with a design that can be evaluated, not just asking for the answer to an equation you haven't given.
    Fair enough, finally getting somewhere. I have only seen the most common method, similar to the GL? " imitate the GL500 style swing arm and mount from in front of the rear wheel up to the spine"

    Yes single seater. Rider weight 180 ish pounds plus riding gear.

    I intend to weld in a anchor point in the existing swingarm, in front of the rear wheel. Then weld on a new subframe and mount the top of shock to the subframe and install a classic cafe racer style plastic rear hump for battery. Probably similar seat as what I did with this bike:

    https://goo.gl/photos/g5gVmcehKpcuGEvK7

  2. #12
    Administrator ChopperCharles's Avatar
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    So, the way I did it was a GL500 swingarm heavily modified, with a custom driveshaft (front part of CX500 shaft and rear part of GL500 shaft). With the GL500 swingarm and linkage setup, a Hayabusa shock was absolutely perfect. Perfect travel, perfect spring, perfect damping, for a 220lb rider and a 110 lb pillion. Using a Hayabusa shock will require heavy modification of the GL500 lower shock mount, as the GL500 has a (very wide) clevis, and the Hayabusa shock has a clevis. I've used a 09-11 GSXR1000 rear shock, which has eyes on both ends, and that works too, but the spring rate is a softer and it has less travel. Still doable, especially if you're lighter or always riding solo.

    I have no experience with monoshock mounts that just welds a shock mount to the swingarm and rear frame tube. I'd look for a bike that does it that way, and use the shock from that. There are kits all over eBay to give you that kind of setup, but I have no idea what shocks people are using with them. I do know the Hayabusa shock with a GL500 swingarm and associated linkagery gives an absolutely amazing ride. The suspension is the absolute best part of my 650 street scrambler. I daresay the rear is better than the front, and the front is really good.

    Note that by going with the GL500 swingarm you're extending the wheelbase about 2 inches (hence the need for the custom driveshaft).

    Charles.
    Visit my Blog: Modified Motorcycles By ChopperCharles at http://choppercharles.com

  3. #13
    Senior Member purplecx500's Avatar
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    Honda CX500 CX 500 B 1981 1982 YSS Adjustable Mono Shock Absorber | eBay

    Cubic Dollars.

    Notice the really heavy spring,this has to

    have some heavy damping.

    finding a stock equal to this is going

    to be difficult and likely expensive.
    SideCar Bob's great thread on settings. http://cx500forum.com/forum/general-...ould-make.html
    Main Wiki you can search by topic: http://cx500forum.com/mediawiki/inde...itle=Main_Page
    Just an Old Rant not very Important: http://cx500forum.com/forum/general-...me-advice.html
    St

    StatorTest;;
    http://cx500forum.com/mediawiki/inde...itle=Main_Page

    'Eager" 1979 CX500C Maroon.
    Name is derived from the sound of this engine at highway speeds.
    Like its eager to go.
    had a Horse that was "Eager"
    But didn't sound the same.
    So I called him "Duke"

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  5. #14
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    The common method results in a pogo stick It looks,cool but the,suspension does not perform well And a,custom shock and spring will be needed if ride is Important
    this will be a 650 to 800 dollar item valved and sprung Properly
    Or you might be able to buy the correct setup from someone Who has done all the development like bbcr engineering
    or copy one of the bikes you like with the assumption that it does work
    Last edited by murrayf; 04-12-2017 at 04:20 AM.
    GET AN OIL FILTER ADAPTER

    Order The Quick Build Exhaust Pipes


    GET A QUICKSET VALVE TOOL


    Way to many bikes to maintain this list LOL !!

    email me at murray at murrayscarbs.com

  6. #15
    Senior Member nolimitz's Avatar
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    Quote Originally Posted by evildave29 View Post
    Honestly no, you are just being a typical internet troll.

    LOL that's the best line of the day! I sure Murray has been called worse, but I doubt he's ever been accused of being a troll.
    83 GLI650 carport find

    1982 GL500i Daily rider
    1982 GL500 Father/Son winter project. The green hornet! Alive and well!

    Mike Nixon's carb book
    Larry Cargill's carb book
    Factory service Manual

  7. #16
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    pissed me off and dissed me on his second post

    and after he read everything in this forum to!

    a new world record !
    GET AN OIL FILTER ADAPTER

    Order The Quick Build Exhaust Pipes


    GET A QUICKSET VALVE TOOL


    Way to many bikes to maintain this list LOL !!

    email me at murray at murrayscarbs.com

  8. #17
    Senior Member purplecx500's Avatar
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    Well if you are interested.


    CX500 Monoshock and Frame/Seat Mod
    .
    .
    .
    .
    .
    .
    .
    .







    .














    SideCar Bob's great thread on settings. http://cx500forum.com/forum/general-...ould-make.html
    Main Wiki you can search by topic: http://cx500forum.com/mediawiki/inde...itle=Main_Page
    Just an Old Rant not very Important: http://cx500forum.com/forum/general-...me-advice.html
    St

    StatorTest;;
    http://cx500forum.com/mediawiki/inde...itle=Main_Page

    'Eager" 1979 CX500C Maroon.
    Name is derived from the sound of this engine at highway speeds.
    Like its eager to go.
    had a Horse that was "Eager"
    But didn't sound the same.
    So I called him "Duke"

  9. #18
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    I don't care for that design. Looks solid, just not what I want. Thanks. Not sure what the crickets thing is about. I worked all day and just got time to reply now. As for your earlier comment and Murray's comment, I am wondering how much "pogo stick" could be tuned out by a specialist? I mean assuming I can find a close enough shock... that isn't too expensive. (The shock you linked costs twice what I paid for the bike, lol) The right spring, shims, valves, whatever?
    I have used Barry at GP Suspension NW on all my race bikes. That guy can take a bone stock new R6 and make it go from feeling like a Cadillac with busted shocks to a Formula Race car. Suspension tuning was always voodoo to me. I don't fully understand it. I would just tell him how the race bike was handling and he would turn screws and nobs on the forks and shock and walla the bike handles like a dream. *shrug* most everything else I would work on myself.
    I came here thinking I would find friendly helpful guys that love riding and wrenching on bikes as much as I do. I don't understand why such an abrasive welcome.

  10. #19
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    I'm not exactly a forum senior here but this is pretty disappointing to read.

    Yes the question was extremely broad but it doesn't take any extra time to be polite.

    "Did you have a design in mind and we can recommend something suitable".

    This would be the polite thing to say instead we got this rubbish.

    I expect better from the members here.
    evildave29 likes this.
    Currently building 2 Cafe Racers:

    CX500 Standard - Current working title "Furry Rat"
    CX500C - Building this for my father, doesn't have a name yet still waiting for something to come to me

  11. #20
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    ^ For the record, he is not my son. haha

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