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Thread: converting shaft drive to chain drive

  1. #1
    Join Date
    Mar 2007
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    Whitby, Ontario
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    Question converting shaft drive to chain drive

    I have a spare ytm200 engine that has been in a fire. It is shaft drive but I would like to convert it to chain drive. Is it a matter of removing a bevelled gear and replacing it with the sprocket, or do i have to change the tranny drive shaft? I'm looking to fit it on my honda bigred 200 1984. I know fitting this engine will have some complication, but my buddy and I have pretty much all the tools needed. Has this been done before? Will the sprockets line up or do I have to shift the engine to one side too much???? and all of that We're hoping to do this over a few 24's of beer, some deer sausages, and rye and pepsi.

    Yamaha YTM200K 1983 (1)
    Honda ATC200 1980 (1)
    Honda ATC200 1983 (1)
    Honda ATC200M 1984 (1) No Motor Yet!
    Honda 250R 1985 (1)
    Yamaha 2005 660 Grizzly Special Edition

  2. #2
    Howdy's Avatar
    Howdy is offline Putting Priorities in Order, Busier than ever. Catch me if you can
    Join Date
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    Celina, Ohio
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    10,079
    To change a motor over will require drastic amounts of work. You will need to modify the output shaft, the center cases, and more. To fit a yam in a Honda you will probably need to modify the frame as well as all the motor mounts. It would be far less work to find a proper motor for the machine.
    What I can't understand is why change the 84 200es to chain drive? The 84 Big Reds ( 200es ) was shaft drive.

    Howdy

  3. #3
    Join Date
    Mar 2007
    Location
    Howard Beach, New York, United States
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    i would imagine he would want to do that mainly because chain dirves are easier to work with and wiegh less, but for all that work i would stick with shaft drive
    Last edited by honda_atc200es; 04-15-2007 at 10:30 AM.
    Current Project:1978 Pontiac Phoenix 355 v8
    Past Bikes: 1999 Yamaha Big bear 350, 1981 Yamaha XS 400, 1996 Yamaha yz250 1984 Honda big red, 2004 Xtreme cr107, 1999 Yamaha bear tracker, 1999 Suzuki ds80 STOLEN, 2005 Kawasaki klx110, 1986 Honda trx200sx
    Daily Driver: 1990 Buick Electra Park Avenue 3.8 v6

  4. #4
    Join Date
    Nov 2002
    Location
    Kirkville, NY
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    You would need to split the case and install a YTM 200 output shaft or weld a sprocket to the current output shaft as well as cut and weld the left side case so there would be enough room for the sprocket and chain. Could it be done with a lot of work it could but it would need a lot of work, I have looked into this so I could get electric start on my YTM 200. If you want to buy an engine for the 200M I have one that I would sell, drop me a pm if interested.
    1984 Yamaha YT 60 Tri Zinger(current project)
    1983 Yamaha YTM 200 (rear suspension kit)..... long term project
    2004 BMW R1150R
    1972 Honda CT 70
    2007 Lifan 110

  5. #5
    Join Date
    Jun 2006
    Location
    holland, ohio
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    1,585
    I'd take a shaft drive over any chain-drive unless it was a sport machine, so I could change gearing. Shaft drives are a lot less maintenance.

  6. #6
    Join Date
    Oct 2006
    Location
    Michigan
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    53
    Quote Originally Posted by filipinoredneck View Post
    I have a spare ytm200 engine that has been in a fire. It is shaft drive but I would like to convert it to chain drive. Is it a matter of removing a bevelled gear and replacing it with the sprocket, or do i have to change the tranny drive shaft? I'm looking to fit it on my honda bigred 200 1984. I know fitting this engine will have some complication, but my buddy and I have pretty much all the tools needed. Has this been done before? Will the sprockets line up or do I have to shift the engine to one side too much???? and all of that We're hoping to do this over a few 24's of beer, some deer sausages, and rye and pepsi.
    yep i think you can do it and id be willing to help

  7. #7
    Join Date
    Mar 2007
    Location
    Whitby, Ontario
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    137
    My honda big red is a chain drive. I cant remember if it is an ES. Ilooked up the vin# and it is a big red but chain drive. I didnt think there was that much involve in converting the ytm200 shaftdrive engine to chain drive. If the engine part is that much work, I might put the engine aside in case I find a shaft drive yamaha ytm and save up for a big red engine.

    Yamaha YTM200K 1983 (1)
    Honda ATC200 1980 (1)
    Honda ATC200 1983 (1)
    Honda ATC200M 1984 (1) No Motor Yet!
    Honda 250R 1985 (1)
    Yamaha 2005 660 Grizzly Special Edition

  8. #8
    Join Date
    Mar 2003
    Location
    Barnesville,Ohio
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    82-83 big reds were chain drive called 200e. 84 big reds were shaft drive called 200es
    1985 Honda 350X - a lot of performance stuff, everything but a cam, hope to get one soon
    1984 Honda 200ES
    198? Yamaha YT60 Tri-Zinger
    TrikeFest '04 & '07 Survivor

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