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Thread: Tim's ATC500R Decompression Mechanism - FINAL UPDATE!!

  1. #16
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    Jason it's not like a 4 stroke decompress. Its doesn't "catch" you're literally holding it open with the lever, it snaps closed immediately when you let off.
    And that's the rest of the story. ~ Paul Harvey

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  2. #17
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    Very cool! Some info I did not know before.

    Do you think it is possible to hold it open with the hotstart lever?
    My Feedback 85 TECATE 500 08 Honda 450R

  3. #18
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    Its possible but honestly I WAS using the stock 450r decompress lever and it was VERY uncomfortable.
    And that's the rest of the story. ~ Paul Harvey

    "Yes its broken, but does that really surprise you?."
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  4. #19
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    Thanks Louis! Going through with this on my own 500 the summer. The g/f has to be able to kick it over. lol
    My Feedback 85 TECATE 500 08 Honda 450R

  5. #20
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    I hope your kidding, that or your g/f is a freakin football player.

    Yah know I hadn't really thought about it but sorry for littering up your thread Tim.
    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?!?!"

  6. #21
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    Goldfinger I think makes a lefthand operated throttle for snowmobile hillclimbing and sidehilling. It lets the rider hang off the left side of the sled and still control the throttle. With that system you pull the lever in like a clutch but its smaller then a clutch lever.

    Just something to look at if your like me and do not like the idea of that big lever on your bars.
    My Feedback 85 TECATE 500 08 Honda 450R

  7. #22
    KASEY's Avatar
    KASEY is offline weee weeee weeeeeeeeeee ! ! ! The day begins with 3WW
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    hey i always say theres got to be a better way,,,,, i like the way yours is mounted louis.. i had one on an old suzuki i had 50 some years ago,,, maybe your on to something,,,,,,,,,, my daughter rode my 500 last season,,, it was funny

  8. #23
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    i would just run a fywheel weight and a cylinder with the decompression scallops above the exhaust... blaster kicker should work just fine while wearin boots...
    2-stroke lover

  9. #24
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    Lou - Don't worry - you aren't littering it up too bad yet

    BGM - while troubleshooting my starting problem yesterday - I had the wife kicking it over for me while I was checking for spark. With the blaster kicker - it kicks like a stock 250R - really pretty effortlessly. And I think it could pretty easily be held open with a hot start lever - it really don't have much tension on it - or maybe it really does and the perch and lever are designed to make it feel that way.


    Anyway - I have a few things I am working on right now with it - it has always started hard when cold . I am getting some new reeds as the old ones were shot really bad and frayed - that is trouble A. Trouble B is that the carb needs gone over. it was dirty when I got it - and I half heartedly cleaned it out in the fall. It needs a thorough going over. ultrasonic the carb and jets. Then we'll see how she fires up. more to come as it progresses....................................
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  10. #25
    Billy Golightly's Avatar
    Billy Golightly is offline Always finding new and exciting ways to not give a hoot in hell Catch me if you can
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    Tim, what carb are you running on there, PJ or PWK?

  11. #26
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    Quote Originally Posted by Billy Golightly View Post
    Tim, what carb are you running on there, PJ or PWK?
    To be honest - I don't even know. What is the difference? I am thinking it is a Keihen - maybe.......
    RIP - Yamahondaman!! You will never be forgotten!
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  12. #27
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    PWK is a D slide I think, the PJ is a round slide? Also whats you're pilot jet at? Mines at 55. I think it could stand to go down one more as it still has a lot of goop at the pipe. I can't wait to get home and get mypart back. I know my 500 needs to go richer. I think I've got the main too lean still and thats why it gets hot still.
    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. #28
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    Quote Originally Posted by Louis Mielke View Post
    PWK is a D slide I think, the PJ is a round slide?
    The PWK is the D slide... The PJ is the flatslide that most hondas use stock(it has the choke plunger idle circuit)... The old round slides are PE's
    2-stroke lover

  14. #29
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    My Carb is a Keihin. It has a 160 main and a 55 pilot. What can you guys tell me about these Keihin carbs? Aren;t they what come stock on most Hondas? Must be a stock CR500 carb.
    RIP - Yamahondaman!! You will never be forgotten!
    RIP - Sam Brehm!! Gone but NEVER forgotten!
    RIP - Sandpuppi101 - You will live on in my mind - I miss you friend!

  15. #30
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    Sounds like the stock carb. Check to see what shape the slide is. Also, I'm pretty sure 55 is the correct stock pilot. Pretty sure the stock main is a 170 but thats meant for an open air box. Does yours even run an air box Tim?
    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?!?!"

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