Zero and the C-monster
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Thread: Zero and the C-monster

  1. #1
    Member DRIVEN's Avatar
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    Zero and the C-monster

    A few weeks ago I became fixated on building one of these -- A misfit bike with no specific designation. Kinda cafe, kinda dual sport, kinda scrambler, kinda rat bike. It seemed like it might be fun so logic would dictate that if I could get a buddy involved it'd be even more fun. It wasn't too tough to get my buddy, Marc on board. We talked over the end goal and contemplated what would be a good platform. At first he was ready to cut up his Nighthawk 750 but it really wasn't an optimal platform. We eventually focused in on the CX500/GL500 platform.
    These have a lot of good things for the end result we're looking for;
    -Short wheel base
    -High ground clearance
    -Shaft driven
    -Mid-sized displacement
    -Tough and reliable
    -Enough produced so that parts are easy to get.
    The rest is up to us.


    We'd been watching CL for for a few days and Marc went to look at a couple. I stumbled across one that was tagged oddly enough that it hadn't popped up in our normal searches. So not only was it an obscure listing, it was a stalled project that was already being taken in the right direction (so we thought), most notably the monoshock conversion. Some pics from the ad...





    Marc went up to Woodland after work to check it out. I got a text from him late that night. It was just a single pic...


    Then the pressure was on me to find the right bike. I was holding out for a GL650 since there are some minor differences that I'd like.


    Well, Marc brought his by my house the next afternoon so I could check it out. Lots of pretty janky stuff that needs to be undone (no surprise there) but it's a good base. Only took about 10 minutes to get it running (pods plugging the atmo ports -- super flooded). The guy called him before he went to look at it to let him know it wouldn't start. Worked out good for Marc -- he was able to get the price down another $150.

    The ammo can on the left holds the battery and the one on the right holds the wad-O-wiring. Both are going away. The seller also included the frame parts that he'd cut off along with the rear fender and original shocks.
    CXPHREAK, OCR and hondapete like this.
    Simultaneous build threads here... http://cx500forum.com/forum/cx-custo...c-monster.html
    '83 GL650I -- Zero
    '82 CX500c -- The C monster

  2. #2
    Member DRIVEN's Avatar
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    Bam!!! Found mine a couple days later.

    Rode it home.



    This thing is honestly pretty rough as it sits. I wouldn't have considered it if I were shopping for a cruiser but it's got everything I need for this project. Ran pretty decent but rode horrible. Add to that the loose fairing and it was a bit tense for the 90 mile ride home. It's pretty complete though. Even had the original owners manual and tool kit in the saddle bag. The luggage is scuffed but not in bad shape. The right side of the fairing is crunched from being dropped. I'll have a huge pile of stuff to sell when I'm done.





    Spent a couple hours cleaning it up and giving it a closer going-over. Fluids all looked good. Plugs don't have many miles on them and look to be burning really clean. Looks like a newer K&N air filter. There is a little tick in the engine that I was hoping a valve adjustment would cure. It didn't. I'm not going to worry about it much unless it gets worse. The inside of the valve covers were amazingly clean. Tires both had <15psi and the front suspension had no air charge at all. No wonder it rode like a wet noodle.


    We were both in research and parts gathering mode at that point.
    OCR and Flipper like this.
    Simultaneous build threads here... http://cx500forum.com/forum/cx-custo...c-monster.html
    '83 GL650I -- Zero
    '82 CX500c -- The C monster

  3. #3
    Member DRIVEN's Avatar
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    Marc brought his by last Sunday and we put in a few hours. More accurately, he put in a few hours while I played shop teacher -- which is exactly how he wanted it. The starting point...

    The previous owner had cut the rear hoops out in an attempt to make it looks cooler. Fortunately he had saved almost all the pieces and Marc got them in the deal. You can see that the rear struts had been cut off and rewelded up higher at some point also.

    Started stripping down the rear...

    Shaved off all the unneeded brackets from the hoops...

    Dropped off the exhaust, rerouted the rear wiring harness, cut off the hokey seat mount and rear gas tank mounting stud...

    Cut some slugs/sleeves (not pictured) for all the weld joints and rewelded the hoops and seat area back together and tacked it in place. I didn't weld it to the frame yet because we are 99% sure that the rear shock will be getting changed out and it'll just be easier to work around it without the rear frame structure in the way.

    Last thing we did was mock up some parts and discuss placement and future tasks and design aspects.



    Only thing we did to mine was take turns buzzing it up and down the driveway.
    Motomicah, Lurvas, OCR and 1 others like this.
    Simultaneous build threads here... http://cx500forum.com/forum/cx-custo...c-monster.html
    '83 GL650I -- Zero
    '82 CX500c -- The C monster

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  5. #4
    Senior Member Lurvas's Avatar
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    Sounds like you guys are gonna have some real fun!
    Just finishing my own brat/cafe and looking to do my next build with a good friend. Considering the k75 as a platform. They seems more common in Sweden than the cx unfortunately will follow your thread with great interest.
    Cedo equum -regnum meum pro equo!!
    -79 cx500 bratalized
    -98 cbr900rr - sold due to new daughter

  6. #5
    Senior Member Lurvas's Avatar
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    Is that the front mudguard placed on the back wheel?
    Cedo equum -regnum meum pro equo!!
    -79 cx500 bratalized
    -98 cbr900rr - sold due to new daughter

  7. #6
    Member DRIVEN's Avatar
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    No. That's just the stock rear fender resting there.
    Simultaneous build threads here... http://cx500forum.com/forum/cx-custo...c-monster.html
    '83 GL650I -- Zero
    '82 CX500c -- The C monster

  8. #7
    KGG
    KGG is offline
    Senior Member KGG's Avatar
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    Can I get an Amen on the gold valve covers!
    They look great.
    Last edited by KGG; 09-15-2015 at 06:14 PM.
    DRIVEN likes this.
    "When the going gets weird, the weird go pro" - HS Thompson.

    79 CX500 Custom (Highly Modified)

  9. #8
    Member DRIVEN's Avatar
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    It looks pretty gold in the photos but it's supposed to be copper. Not sure if it was intentional or not but it has kind of a hammered texture. Looks good to me.
    Simultaneous build threads here... http://cx500forum.com/forum/cx-custo...c-monster.html
    '83 GL650I -- Zero
    '82 CX500c -- The C monster

  10. #9
    Senior Member Thomas's Avatar
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    Nice.
    1981 Honda GL500, abandoned bike that was stripped and "Left 4 Dead", pieced together and getting another run at the road. Ugly and rough around the edges, like the owner, but enthusiastic, fun, and surprisingly reliable. Its a Honda, so you know it's going to start when you hit the button.


    Link to the progress of Project Left4Dead http://cx500forum.com/forum/garage-w...otorcycle.html
    Bikes currently in the stable.
    1986 Goldwing GL1200 Aspencade
    1981 GL500 Silverwing "Project:Left4Dead"
    1979 Honda CM400 Automatic "Uncle Billy's Bike" currently in pieces.
    Yamaha TT125, Doesn't someone need a shiftercart engine? PM me.
    Kawasaki KDX450 ****Update**** Gone to a new home to be rebuilt and ridden again.
    ***1970 CM400T needs a new home. *** PM me.
    Get on your Bike and Ride.

  11. #10
    Member DRIVEN's Avatar
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    More progress on the C-monster. Stopped by Marc's place on the way home from a ride last Sunday. He had picked up a CX650 roller that we decided might make a good fork donor. Since he's about 6'4" the extra 3" in fork length might work out well. Plus, it had the fork brace too. He had also been bodyworking the tank.


    As for project Zero, I have a pretty complete pile of parts.

    I'll spend the day cleaning up and rearranging the shop so I have room to work.
    Seems like it's going to be hard to slow down and pace myself through the winter. Marc already has a huge head start so I feel like I'm playing catch-up.
    OCR likes this.
    Simultaneous build threads here... http://cx500forum.com/forum/cx-custo...c-monster.html
    '83 GL650I -- Zero
    '82 CX500c -- The C monster

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