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Thread: KTM Three Wheeler Conversion - Done!!!

  1. #1
    Join Date
    Apr 2011
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    Mexico
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    KTM Three Wheeler Conversion - Done!!!

    Formerly “Wish me luck!” She’s on three now, so there’s no going back. Thanks to all who are following and helping :

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    Last edited by El Camexican; 12-04-2019 at 04:41 PM.

  2. #2
    Join Date
    Jul 2012
    Location
    Seattle, Washington
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    Good Luck!

  3. #3
    Join Date
    Apr 2011
    Location
    Mexico
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    As of last night

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    The PO left it outside for most of its life. Every bolt squeals like a stuck pig coming out. I gave up on a few and doused them with PB Blaster before calling it a night.
    It sucks to get old

  4. #4
    fabiodriven's Avatar
    fabiodriven is offline Aspiring romance novel cover model, and the Official 3WW slayer of thieves and swindlers. Catch me if you can
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    I should have posted about this stuff in the penetrating oil thread, I'd still like to. If you have the opportunity to get this stuff it's amazing. It pretty much washes away rust. It's an amazing penetrating oil but I use it just as much cleaning parts so it's a fantastic solvent as well. I think you have to get it from a Kimball Midwest dealer though.

    85 Tri-Zinger 60
    85 ATC250SX
    86 ATC250SX
    87 ATC250SX
    02 XR650L conversion
    84 ATC 480R

  5. #5
    Join Date
    Sep 2010
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    Gold Hill, OR
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    Quote Originally Posted by fabiodriven View Post
    I should have posted about this stuff in the penetrating oil thread, I'd still like to. If you have the opportunity to get this stuff it's amazing. It pretty much washes away rust. It's an amazing penetrating oil but I use it just as much cleaning parts so it's a fantastic solvent as well. I think you have to get it from a Kimball Midwest dealer though.

    I have a can of this in my garage. Fabio is right, the stuff is amazing. And it kinda smells good unlike PB!


    Joker 90
    1970 Honda US90- aquarius blue
    1981 Yamaha YT125
    1986 Yamaha Big Wheel 80
    1986 Kawasaki Tecate KXT500
    1987 Kawasaki KXT250B2
    2005 Yamaha YFZ450

  6. #6
    Join Date
    Jun 2010
    Location
    Cold Lake, Alberta, Canada
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    What are your plans for it? To be honest I didn't know what you meant by "wishing you luck" but now that I see you're tearing it down I get it. It looks to be in very good shape.
    Trikes
    1970/71 US 90 (Aquarius Blue)
    1970/71 US 90 (Future Project)
    1972/73 US 90 Camo Project (110 Big Bore)
    1972/73 US 90 Green
    1977 ATC 90 w/83 110 motor (Fugly)
    1982 ATC 70
    1983 ATC 70 (Ladybug)
    1973 ATC 70

    1965 Marketeer 3 Wheel Golf Cart with 1986 Honda 250 drivetrain

    TF 2015

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    1983 Honda Z50
    1978 Honda XL75

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  7. #7
    Join Date
    Jun 2005
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    Soutwestern PA
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    Quote Originally Posted by coolpool View Post
    What are your plans for it? To be honest I didn't know what you meant by "wishing you luck" but now that I see you're tearing it down I get it. It looks to be in very good shape.
    At first, I thought he meant good luck in not getting run off the road and wrecked on a mountain pass. Then I realized it was in the Trikesylvania forum, so it had better be the "before" picture of what will soon be a very awesome trike conversion.

  8. #8
    Join Date
    Jun 2009
    Location
    Leander TX
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    Your projects turn out so clean this should be awesome conversion or otherwise.

    Good luck to ya!

  9. #9
    Join Date
    Apr 2011
    Location
    Mexico
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    The plan is to make it into a 300cc 2 stroke three wheeler.

    I chose this particular model because if I chickened out, or simply couldn’t engineer it for some reason I have two other bikes that accept all the parts and vice versa. I’ve been playing mental ping pong between trike and bike every time I looked at it for months now. It’s fugly patina sticks out like a pimple on a prom queens face amongst my other toys and I finally made the decision to rebuild it as a bike last week, but then….

    While making my usual pre-teardown check list I realized that it was going to cost me over $1,400 plus an unknown engine refresh and a lot of other parts I’ve already paid for that sitting around. Add in the usual OCD factor and I’d be sanding and polishing my brains out to end up with a $3,000 bike I’ll likely never need or sell. Add to this it would be done and over with in less than 2 months and I’ll be looking for another project.

    So as of Saturday night after a lot of staring and rum sipping I decided to man up try the conversion. Typically if I make public my intent to do something I go through with it, so I posted the photo as motivation, but reserve the right to tuck tail and make it back into a bike at any moment before a cutting wheel hits the frame.

    My biggest challenge will be my geographical location. It would be so much easier to do this if I could stand next to a KTM Quad and take measurements (hint, hint Fabs). Issue # 1 is clearance to kick start it. That alone may end the project, but it’s going to cost me a set of rear fenders in advance, same with the seat. Yes I could have bought an e-start bike, but then nothing would fit my other bikes.

    Front end will require a custom tree and I’m not sure which wheel to use. This will be built with the dunes in mind, so something tall and wide that I can get a sand tire for is preferred. I like teh diameter of my 85 Tri-Z wheel, but tire selection is sparse. Any suggestions for a wheel or a custom triple tree maker would be appreciated. I have the option of a 20mm or 22mm axle, but I guess collars are an option.

    Swing-arm will likely be a combination of Banshee parts that I will have to fab up myself. I want to use the aftermarket style that clamps a rotating hub. I have some interesting ideas for rear ride height adjustment that I want to incorporate with the non-link PDS shock.

    Was hoping to find white or black plastic, but after talking to a KTM USA rep. orange is the only option. White and black plastic ran out a few years back. He said by law they have to offer parts for at least 10 years and the 2008 stuff is almost gone. He wouldn’t say it officially, but hinted that due to the limited run of quads they made that spare OEM parts will be gone “very soon”.

    Last night I got it down to bits and pieces and started to appreciate that I chose to go with three wheels and not two. The fact that this guy stored the bike outside, even in our relatively arid climate ruined a lot of things I didn’t think I would have to replace the first time I scoped it out.

    The lower shock bolt was so rusted that even after penetrating oil and heating I ended up spinning the greaseless bearing inside the swing-arm when I put an impart to it. It took two hours of ing, heating and lubricating the bolt to get it out of the bearing. Motor mounts were the same, my electric impact gun wouldn’t bust them loose without heat and lube. I ended up having to weld a flat bar onto one sub-frame bolt to brake it loose. After all this I was dreading the swing-arm bolt, but it came loose after a little persuasion. Axels are pending.

    The good news is that at a glance the thing wasn’t used much. If someone was in the engine they left no tracks.

    All advise is welcome, especially if it’s free.
    It sucks to get old

  10. #10
    Join Date
    Jan 2010
    Location
    Sulphur Springs,Texas
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    Looking forward to seeing what happens on this. I haven't seen a KTM trike conversion!
    • 1985 Honda 250SX
    • 1985 Honda 350X
    • 1985 Honda 350X
    • 1986 Honda 250R



    “I Love The 350x. It’s So Bad”

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  11. #11
    Join Date
    Apr 2011
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    Mexico
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    Quote Originally Posted by Hondatcs View Post
    I haven't seen a KTM trike conversion!
    There were photos of a very nice KTM 450 conversion going around a few years back. If anyone can post a photo or link it would be apreaciated.
    It sucks to get old

  12. #12
    Join Date
    Jul 2012
    Location
    Penfield NY
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    660
    Good luck...this is going to be good.
    "See, morbid and creepifying, I got no problem with, long as she does it quiet-like. "

    Trikes:
    1982 Honda ATC250R(in process), 1984 Honda ATC110, 1984 Honda 200s, 1985 Kawasaki KLT160(not running...yet)
    Quads:
    1990 Suzuki LT250S, 2013 Suzuki LT-Z400, 2014 Honda TRX450R SE

  13. #13
    Join Date
    Nov 2012
    Location
    Waldoboro, maine
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    791
    Quote Originally Posted by El Camexican View Post
    There were photos of a very nice KTM 450 conversion going around a few years back. If anyone can post a photo or link it would be apreaciated.
    Dis' one?
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    82 250r
    83 Big Red
    85 Auto-x
    If you've done business with me please leave me feedback
    http://www.3wheelerworld.com/showthr...ght=Bren_downe

  14. #14
    Join Date
    Apr 2011
    Location
    Mexico
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    In for a penny, in for a pound.

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    It sucks to get old

  15. #15
    fabiodriven's Avatar
    fabiodriven is offline Aspiring romance novel cover model, and the Official 3WW slayer of thieves and swindlers. Catch me if you can
    Join Date
    Jun 2008
    Location
    The woods
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    Wish me luck!

    This is great Nico. Just remember, it's going to be more work than you think, lol! I've been wrenching full time on three willers lately and I've noticed how much more work everything is than I'm anticipating! I'm excited to see this though and I know it's going to come out great. Chappy's quad is mere paces from me so...
    85 Tri-Zinger 60
    85 ATC250SX
    86 ATC250SX
    87 ATC250SX
    02 XR650L conversion
    84 ATC 480R

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