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Thread: 350x swingarm extension

  1. #1
    Join Date
    Jun 2013
    Location
    Southern Indiana, United States
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    140

    350x swingarm extension

    Can anyone give me any advice on where to cut the swingarm and how thick the steel is and how long I should extend it? I want to extend my swingarm, and don't know how much it would cost. I can cut and weld
    Myself but how much for a new chain and brake line? Any other problems I should worry about?
    350cc's of Pure Adrenalin'

    '85 350x
    '85 Big Red 250

  2. #2
    Join Date
    Sep 2011
    Location
    New Castle, PA
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    1,134
    Double post
    Look down!
    Last edited by rg97; 01-18-2014 at 11:19 PM.
    1983 212x "Mickey Dunlap" Powroll TT Trike -Blue frame, Supertrapp (looking for a Powroll DD), WEB Stage II cam, Powroll 6mm stroker, Wiseco 10.25:1 piston stock bore, ported, polished, +2 Swinger,White low-pros and 250R front fender, BAPP rear shock, Powroll Decals, NOS Carlisle R/A's

    Gone:
    '83 185s, '86 200x, '70's Full Suspension Hi-Performance ATC RD400,

  3. #3
    Join Date
    Sep 2011
    Location
    New Castle, PA
    --
    1,134
    I cut my swingarm between the shock mount and axle carrier on my 200x, then I got some 2" long tube the right size and thickness. TIG welded everything together and just yesterday welded some fish plates on the side for added strength.<br>Your best bet is to drill a 1/4" hole in the swinger near where you're going to cut it and measure the thickness using a depth mic on a set of calipers. My tube for example was 60mm x 30mm x 2.30mm rectangular tube. The 350x will be a different size. The company I ordered from sent me a free 6" sample of the tube and that was all I needed.
    http://www.3wheelerworld.com/showthr...and-weld-pics!
    1983 212x "Mickey Dunlap" Powroll TT Trike -Blue frame, Supertrapp (looking for a Powroll DD), WEB Stage II cam, Powroll 6mm stroker, Wiseco 10.25:1 piston stock bore, ported, polished, +2 Swinger,White low-pros and 250R front fender, BAPP rear shock, Powroll Decals, NOS Carlisle R/A's

    Gone:
    '83 185s, '86 200x, '70's Full Suspension Hi-Performance ATC RD400,

  4. #4
    Join Date
    Jun 2013
    Location
    Southern Indiana, United States
    --
    140
    Quote Originally Posted by rg97 View Post
    I cut my swingarm between the shock mount and axle carrier on my 200x, then I got some 2" long tube the right size and thickness. TIG welded everything together and just yesterday welded some fish plates on the side for added strength.<br>Your best bet is to drill a 1/4" hole in the swinger near where you're going to cut it and measure the thickness using a depth mic on a set of calipers. My tube for example was 60mm x 30mm x 2.30mm rectangular tube. The 350x will be a different size. The company I ordered from sent me a free 6" sample of the tube and that was all I needed.
    http://www.3wheelerworld.com/showthr...and-weld-pics!
    how much was the metal u ordered.? Is sleeving a must? do I have to have an extended axle?
    350cc's of Pure Adrenalin'

    '85 350x
    '85 Big Red 250

  5. #5
    Join Date
    Sep 2011
    Location
    New Castle, PA
    --
    1,134
    The company I ordered from sent me a 6" free sample. I cut it into three EXACT 2" sections and used two of them for the swingarm (one for each rail), the third is a backup. (my swingarm is a +2)
    Sleeving is very strong and works well and if I put in my opinion I'm going to get tore up like I did in my thread. I do not think that sleeving is a MUST, but you gotta remember you have 150cc more than my bike. I recommend it, but can it be done without it? yes.
    Extended swingarms and extended axles work well together but it's not a necessity.
    1983 212x "Mickey Dunlap" Powroll TT Trike -Blue frame, Supertrapp (looking for a Powroll DD), WEB Stage II cam, Powroll 6mm stroker, Wiseco 10.25:1 piston stock bore, ported, polished, +2 Swinger,White low-pros and 250R front fender, BAPP rear shock, Powroll Decals, NOS Carlisle R/A's

    Gone:
    '83 185s, '86 200x, '70's Full Suspension Hi-Performance ATC RD400,

  6. #6
    Join Date
    Jun 2013
    Location
    Southern Indiana, United States
    --
    140
    Quote Originally Posted by rg97 View Post
    The company I ordered from sent me a 6" free sample. I cut it into three EXACT 2" sections and used two of them for the swingarm (one for each rail), the third is a backup. (my swingarm is a +2)
    Sleeving is very strong and works well and if I put in my opinion I'm going to get tore up like I did in my thread. I do not think that sleeving is a MUST, but you gotta remember you have 150cc more than my bike. I recommend it, but can it be done without it? yes.
    Extended swingarms and extended axles work well together but it's not a necessity.
    so other than welding tools and such, your extension was virtually free?
    350cc's of Pure Adrenalin'

    '85 350x
    '85 Big Red 250

  7. #7
    Join Date
    Sep 2011
    Location
    New Castle, PA
    --
    1,134
    Yep!
    I had to use the BIG bandsaw at work to cut the swingarm in half precisely, but other than that 100% free
    You may want to send a PM to KASEY, he does a lot of fabrication work with complete bikes and does very well with swingarms
    1983 212x "Mickey Dunlap" Powroll TT Trike -Blue frame, Supertrapp (looking for a Powroll DD), WEB Stage II cam, Powroll 6mm stroker, Wiseco 10.25:1 piston stock bore, ported, polished, +2 Swinger,White low-pros and 250R front fender, BAPP rear shock, Powroll Decals, NOS Carlisle R/A's

    Gone:
    '83 185s, '86 200x, '70's Full Suspension Hi-Performance ATC RD400,

  8. #8
    Join Date
    Jun 2013
    Location
    Southern Indiana, United States
    --
    140
    I wonder how much he would charge to extend mine. I am wanting the badass extended look, and width,
    Without buying a 350 dollar axle if you see what I am saying.
    350cc's of Pure Adrenalin'

    '85 350x
    '85 Big Red 250

  9. #9
    Join Date
    Sep 2011
    Location
    New Castle, PA
    --
    1,134
    Extended hubs work well for width. Some are 2" extra on each side, so thats the same as a +4 axle
    I dont know if Richard (KASEY) will do it. Idk if he does work for other people. Worst case scenario you ask and he says no.
    1983 212x "Mickey Dunlap" Powroll TT Trike -Blue frame, Supertrapp (looking for a Powroll DD), WEB Stage II cam, Powroll 6mm stroker, Wiseco 10.25:1 piston stock bore, ported, polished, +2 Swinger,White low-pros and 250R front fender, BAPP rear shock, Powroll Decals, NOS Carlisle R/A's

    Gone:
    '83 185s, '86 200x, '70's Full Suspension Hi-Performance ATC RD400,

  10. #10
    Join Date
    Jun 2013
    Location
    Southern Indiana, United States
    --
    140
    Quote Originally Posted by rg97 View Post
    Extended hubs work well for width. Some are 2" extra on each side, so thats the same as a +4 axle
    I dont know if Richard (KASEY) will do it. Idk if he does work for other people. Worst case scenario you ask and he says no.
    I'm trying for a new look. Extended swingarm, wheel spacers/extended hubs, new seat cover, new fork boots, new hand grips. Want to make my X look amazing. Trying to figure out different ways of doing so.
    350cc's of Pure Adrenalin'

    '85 350x
    '85 Big Red 250

  11. #11
    Join Date
    Sep 2011
    Location
    New Castle, PA
    --
    1,134
    It all depends on how much $ you want to throw at it
    Any pics? i can point stuff out
    1983 212x "Mickey Dunlap" Powroll TT Trike -Blue frame, Supertrapp (looking for a Powroll DD), WEB Stage II cam, Powroll 6mm stroker, Wiseco 10.25:1 piston stock bore, ported, polished, +2 Swinger,White low-pros and 250R front fender, BAPP rear shock, Powroll Decals, NOS Carlisle R/A's

    Gone:
    '83 185s, '86 200x, '70's Full Suspension Hi-Performance ATC RD400,

  12. #12
    Join Date
    Jun 2013
    Location
    Southern Indiana, United States
    --
    140
    All I have at the moment

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    350cc's of Pure Adrenalin'

    '85 350x
    '85 Big Red 250

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