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Thread: KTM Three Wheeler Conversion - Done!!!

  1. #91
    Join Date
    Apr 2011
    Location
    Mexico
    --
    9,012
    Quote Originally Posted by Red Rider View Post
    Why not the oem hubs then?
    I don't have any. I'm putting this axle together from scratch and didn't want to buy used ones, so I went with what I assumed would be superior to OEM.


    Quote Originally Posted by BOB MARLIN View Post
    Your welds make mine look like 3 year old built my swingarm.
    You see only what I want you to see I blew through a few times, but that one bead came out ok. I never was very good at welding the light stuff, 3/16” and up is so much easier.
    It sucks to get old

  2. #92
    Join Date
    Oct 2003
    Location
    Las Vegas, NV.
    --
    2,452
    Quote Originally Posted by El Camexican View Post
    I don't have any. I'm putting this axle together from scratch and didn't want to buy used ones, so I went with what I assumed would be superior to OEM.
    Gotcha. I thought these might be some special, trick, aluminum numbers.
    Red Rider's Sand Machine Updated 07/23/14

  3. #93
    Join Date
    Apr 2011
    Location
    Mexico
    --
    9,012
    Quote Originally Posted by Red Rider View Post
    Gotcha. I thought these might be some special, trick, aluminum numbers.
    That’s what I wanted to go with, but they make the trike too wide. I may try them on my Tri Z.

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    Last edited by El Camexican; 09-01-2018 at 07:54 PM.
    It sucks to get old

  4. #94
    Join Date
    Apr 2011
    Location
    Mexico
    --
    9,012
    It sure would be nice to have unfettered access to a machine shop, but such is life.

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    Last edited by El Camexican; 09-02-2018 at 06:55 PM.
    It sucks to get old

  5. #95
    Join Date
    Oct 2002
    Location
    Northeast
    --
    17,438
    Soap up that tire, she'll seat!! I usually put a ratchet strap around the O.D. of the tire to keep it from expanding too much.

    You probably know that trick...
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

  6. #96
    Join Date
    Apr 2011
    Location
    Mexico
    --
    9,012
    Quote Originally Posted by Dirtcrasher View Post
    Soap up that tire, she'll seat!! I usually put a ratchet strap around the O.D. of the tire to keep it from expanding too much.

    You probably know that trick...
    Soaped them up again and hit them with a larger compressor. Sealed up nicely this time, but it took over 40 psi to do one of them, I can't remember a tire that banged that hard when it beaded. Maybe something to do with the powder coating? Getting them off should be fun.
    It sucks to get old

  7. #97
    Join Date
    Apr 2011
    Location
    Mexico
    --
    9,012
    Starting to get interesting now. Unfortunately I can’t finish the swing arm until I decide if the shock is going to be offset or in the center.

    Click image for larger version. 

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    It sucks to get old

  8. #98
    Join Date
    May 2006
    Location
    The Open Road
    --
    4,729
    Quote Originally Posted by El Camexican View Post
    It sure would be nice to have unfettered access to a machine shop, but such is life.
    It most certainly is....



    Sent from my Z958 using Tapatalk

  9. #99
    Join Date
    Apr 2011
    Location
    Mexico
    --
    9,012
    Quote Originally Posted by ironchop View Post
    It most certainly is....



    Sent from my Z958 using Tapatalk
    When you have time to use it
    It sucks to get old

  10. #100
    Join Date
    May 2006
    Location
    The Open Road
    --
    4,729
    Quote Originally Posted by El Camexican View Post
    When you have time to use it
    Ain't that the truth. We have another fab shop around the corner full of welders, plasma table, 4x8 sheets, tubing, solid bar and rectangle billet stock in various metals. Like a fabrication buffet

    It's the perfect setting for a Mad Max build-off TV show or something like a Howe and Howe Tech

    You have to be slick and sneak your stuff in between the legit stuff as soon as the opportunity arises

    Sent from my Z958 using Tapatalk

  11. #101
    Join Date
    Apr 2011
    Location
    Mexico
    --
    9,012
    Haven’t had electricity in the house for three days. The socket that holds the electric meter on the house dropped a phase and then melted in a shower of smokes and flame when they tried to remove it. Second time in less than 6 years. Wife blames my welder opted for a 250 amp unit, so I hope this is the last interception to my late night hobby.

    Got the lower shock mount from the machine shop today. It’s probably unique to the KTM’s in that it houses a Teflon bearing that doesn’t use any lubricant. In fact WP says that putting grease or oil on them will ruin them. The lower shock mount is a forged aluminum U that fits over the mount.

    Click image for larger version. 

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    The plan is to weld the steel housing to a plate that will bolt to the swing-arm. The swing-arm will have 4 mounting positions spaced 3/4” apart so the swing-arm can be raised and lowered by moving the plate. The shock mount with be off-set on the mounting plate by 3/8”, so if a 3/4” move is too much,or too little, the mount plate can be flipped around for a 3/8” adjustment.
    It sucks to get old

  12. #102
    Join Date
    Aug 2008
    Location
    devore,ca
    --
    1,015
    Quote Originally Posted by El Camexican View Post
    Starting to get interesting now. Unfortunately I can’t finish the swing arm until I decide if the shock is going to be offset or in the center.

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    A word of advice.

    When your welding the front pivot bearing holders to the swingarm make sure you cover up the shaft that your using for alignment. The weld splatter tends to get on the shaft and you cant remove it without screwing up the bearing surface.
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  13. #103
    Join Date
    Apr 2011
    Location
    Mexico
    --
    9,012
    Quote Originally Posted by BOB MARLIN View Post
    A word of advice.

    When your welding the front pivot bearing holders to the swingarm make sure you cover up the shaft that your using for alignment. The weld splatter tends to get on the shaft and you cant remove it without screwing up the bearing surface.
    Very true! I'm using a tubular spacer to keep the two bushings separated during welding, so the inter section of the shaft is covered. I usually put an old welding glove over exposed shafts to protect them.
    It sucks to get old

  14. #104
    Join Date
    Apr 2011
    Location
    Mexico
    --
    9,012
    Much of today was spent designing the upper section of the sub-frame. Decided to go with laser cut sheet metal and then probably stiffen it with a perimeter of thin flat-bar. Still haven’t made up my mind on running the shock in the stock off-set location, or centering it, but it’s starting to look like the underside of the quad fenders are going to have to be cut out, so the option to use the stock shock mount and air box boot is looking better.

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    Then there’s this to deal with...

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    I’ve been telling myself the seat would take care of itself when the time was right, but I tend to lie to me at times and this was one of those occasions. I’m hoping I don’t need to make a whole new seat pan.
    It sucks to get old

  15. #105
    Join Date
    Apr 2011
    Location
    Mexico
    --
    9,012
    Pulled the triggers tonight. Dremel, grinder and drill triggers that is.

    I’ve been blowing up photos of conversion trikes and looking closely at the transitions of the seats and fenders of the ATV’s to the slender tanks of the bikes. It looks like this area of most if not all conversions is a dead giveaway as to what the trikes started life as.

    Unfortunately mine isn’t going to be any different as there’s no way I can transition the ATV seat to the bike tank without the lower section of the seat being wider than the tank.

    I used the front of the bike seat and cut up the ATV seat pan to accept it. This was necessary because the ATV tank is flat and the bike tank has a protrusion which extends into the seat of the motorcycle and also ask as part of the latching mechanism. I could have just cut an opening into the ATV seat and cut the front to match the shape of the tank, but the angle would’ve been slightly different and the catch pin at the top of the gas tank wouldn’t have worked.

    Anyway, this is as good as it’s going to get.

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    Last edited by El Camexican; 09-12-2018 at 11:13 PM.
    It sucks to get old

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