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Thread: ATC 500R... Round Two!

  1. #1
    Join Date
    Mar 2004
    Location
    North Central Ohio!!
    --
    2,712

    ATC 500R... Round Two!

    I've just been thoroughly disgusted with this project for awhile now.

    I machined some 250R triples to accept the 500 forks and installed them, but the rake in the main stem, combined with the rake in the triples just wouldn't work.

    Then I decided to use 250R plastics and had the tank mounts and rear subframe built to accept them, only to have everything turn out no exactly as planned, which made me hate the project even more.

    To top it off, I decided to use the original swinger and just modify it to accept the Banshee rear-end that I bought. Which ended up being offset to align the sprockets, and I hated it as well.

    So here I am looking at this monstrousity and just getting pissed. Tons of time and money down the drain. Sell it or Start over?

    I decided to try it one more time. If it doesn't turn out the way I want this time, I'm parting it!

    Step one:
    Get rid of that damn front end! I swapped out my 350X front end and noticed that the 350X has no rake in the triples, so it was a natural choice. To be honest, it's the way to go. The X and the CR both share the same steering stop arrangements so no modification is neccessary. I swapped the steering stems and bolted it on.

    Step two:
    Tear the plastics off and start over! Off came all the 250R stuff and back on went the stock CR tank. Had to run the 350X front fender of course. I'll probably still use the 250R rear plastic and seat after a new subframe is built.

    Step three:
    What to do with this swingarm? For starters this one has got to go! After some careful measuring it looks like the 350X swinger and axle assembly will fit with very little modification, so that's the next step. Unfortunately I can't do that until I finish the 250R rear suspension swap to the 350X.
    The bike will end up being similar to a 250R with a +2" swinger, so most likely it will have to be extended at some point, but for now I just want to ride it!

    Here's a before picture and a current picture. Looking much better I think!
    Attached Thumbnails Attached Thumbnails 500 project.jpg   500 phase 2 -3.jpg  
    2007 YAMAHA YTZ450 went to a great home RIP Sam


  2. #2
    Join Date
    Nov 2003
    Location
    Newfoundland
    --
    5,280
    Definately looks better. This is going to be the flattrack racer you had planned? The swinger swap should make it look great and handle tons better. IMO it'll be one heck of a looker when its shortened up.

  3. #3
    Join Date
    Jun 2004
    Location
    AZ
    --
    43
    see i told you , you should have just bought mine .... just kidding keep it up there is a company in phoenix Az that can build you a swing any size you like and they should have the jig already just a thought . MARC

  4. #4
    Join Date
    May 2002
    Location
    Texas
    --
    2,670
    I like the 500Rs with the CR tank and shrouds. Gives them a different look.

    I also like the leading axle 350X front end.
    1986 Tecate
    1984 Tecate
    1985 Tri-Z
    1986 ATC350X
    1985 ATC250R (2)
    1985 ATC125M (2)
    1982 ATC70 - Original Owner

    175 TriMoto Frame with Pro-Tec Rear Suspension

    3-Wheelin' since '82

  5. #5
    Join Date
    Sep 2005
    Location
    Northwest Ohio(Forest)
    --
    974
    Looks good! Gonna be a fast one. Exactly what are you gonna do with it? Drag? Flat Track? Also i wanna go riding with ya sometime.....Im gettin my 350x fixed soon.
    '86 200x

  6. #6
    Join Date
    Mar 2004
    Location
    North Central Ohio!!
    --
    2,712
    Not sure what i'm doing with it yet. Originally I wanted to just build one to ride. But now it's starting to look more like it will have to be a drag bike. BUT, if I can't beat Jason on his XL500 trike with my 250R in the flat-track races, I could easily use this for that. I think it will make a little too much power for the short track we have though. And it would DEFINATELY need a brake upgrade!
    2007 YAMAHA YTZ450 went to a great home RIP Sam


  7. #7
    Join Date
    Aug 2002
    Location
    New York
    --
    1,098
    Has anyone built a CR500 to be anything other than a drag or dune bike? I haven't come across one built for the woods or flat track. I see 250Rs with the CR motor, but not a CR conversion.

    I stuck with the stock stuff and put the ESR motor in it like a couple others on here.

  8. #8
    Join Date
    Nov 2003
    Location
    Front royal, va
    --
    2,186
    that bike looks great!i bet it rips! have to rode it around yet??
    1985 With "86" Plastic's,Custom 12" Alluminum Extended Swing Arm,39MM PWK,"TRX" Filter,9 Paddle TALLER HALLER'S on 11" Wide Rim's,LOT'S of Stainless,LOT'S of Alluminum,LOT'S of PowderCoating,NOTHING Stock..

    FASTEST Tri-Z on The Planet...MAKE A NOTE !! and the SECOND FASTEST, WRITE IT DOWN AGAIN!!!

  9. #9
    travis712's Avatar
    travis712 is offline At The Back Of The Pack Arm chair racerFirst time rider
    Join Date
    Jun 2005
    Location
    Maine
    --
    157
    Wow that thing is gnarly. Get some vid's once your done with it lol.
    86 200x- finally all back together

  10. #10
    Join Date
    Oct 2004
    Location
    Maryland
    --
    3,077
    well once again this kinda project is a labor of love, trial and error. Three long years in mine so fr and still not done, much closer though. This pic is about 2 months old now, switched to 450r palstic and seat, (no comments on seat angle! its better now, this was just temp for the pic)

    Definatly commin along now, engine is 100% complete. Even got the accustart kit witch does make a world of difference. Got my custom aluminum airbox complete which is freakin sweet. and I'm finishing up the drive line now. All thats left will be finallizing the welding on the subframe and then tear down for cosmetics.

    Anyone who wants to do this, and I know many others can vouch for this, PLAN AHEAD, TAKE YOUR TIME, and make wise purchases.

    And yes, this is an all purpose bike, not just a straight liner.

    And I repeat this picture is old. Lotsa work done since then, just no time for pictures/updates on my wedsite.
    Attached Thumbnails Attached Thumbnails 500.jpg  
    And that's the rest of the story. ~ Paul Harvey

    "Yes its broken, but does that really surprise you?."
    "What happened? What does it look like happened?!?!"

  11. #11
    Join Date
    Jun 2002
    Location
    Mississippi
    --
    2,552
    you could buy mine. it runs great, kick starts great, and looks great!!! $3000

    i like to think it is an all around bike. the +6" swinger does hurt the turns some but you can jsut gas it and slide the rear to make up for that. I have not EVER had it in the mud and do not plan to
    Attached Thumbnails Attached Thumbnails 500rr.jpg  
    83 ATC70
    85 ATC70
    85 200x vintage racer
    86 500r
    Lots of parts

    My 500R


  12. #12
    Join Date
    Oct 2004
    Location
    Maryland
    --
    3,077
    How bad is turning on that bike? Mines +4" but of course my rakes a little different. I'm still wondering about my turning radius.
    And that's the rest of the story. ~ Paul Harvey

    "Yes its broken, but does that really surprise you?."
    "What happened? What does it look like happened?!?!"

  13. #13
    Join Date
    Jun 2002
    Location
    Mississippi
    --
    2,552
    turning is no problem, keeping the front end down is!!
    83 ATC70
    85 ATC70
    85 200x vintage racer
    86 500r
    Lots of parts

    My 500R


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