New - Simple - Sturdy - TW200 - Swingarm - Extension
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Thread: New - Simple - Sturdy - TW200 - Swingarm - Extension

  1. #1
    Senior Member PlacerLode's Avatar
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    New - Simple - Sturdy - TW200 - Swingarm - Extension

    Heres a technique a BW owner used to extend his swingarm it's simple, sturdy and does not require the cut, extend and splice technique we have been using

    Some 3/8" steel plate aprx 4 to 5" long would be plenty to extend a TW arm 3 inches

    with this method you could actually weld the part on w/o even removing the swingarm

    Once we make a pattern we could have a stack flame or water cut for cheap and we'd have a lifetime supply

    the BW brackets pictured are fairly long the TW would not need to be anywhere near this long for 1 to 3" extensions

    In theory a longer axle slot would allow us to Adjust our extension from 1 to 3" with a turn of a wrench

    These weld on tab / extensions could also hold all the mounts for an XT250 rear disc conversion

    Maybe I'm crazy but I think this could work
    1.jpg2.jpg3.jpg4.jpg
    Last edited by PlacerLode; 11-06-2016 at 01:38 AM.
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    Senior Member joeband's Avatar
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    outside the box!

    (but trust your welder)
    1994 TW226- 6spd. 10w-40 synthetic, XTHidden Content , XT225 stainless header, +2" Joemama swingarm, lizrd cooler, +20% fork springs, +25% rear spring, 2001 speedo w/ trip odo, pro taper atv bars, bark busters, shinko 241 front tire, front fender w/ mr bracket bracket, Hidden Content , o-ring chain, ricochet skid plate, Hidden Content , XT225 rear brake cam lever, folding-tip shifter, cycle rack, kolpin 1.5 aux tank & 1450 pelican case. Hidden Content or Hidden Content

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    Senior Member BkCntryCrwlr's Avatar
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    My welder really sucks, he looks back at me every time I look in a mirror!

    That's why I have a friend (expert welder) help me out!
    You can't see it if you're not out there living it!

    '94 Rainbow Warrior - not so rainbow any more - Clarke XT350 tank, Lizrdbrth's seat mod, Beer Trap Pegs, Ricochet skid plate and more.

    Going through withdrawals, sold my other two TW's, down to one....Uhggghhh! Hidden Content

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  5. #4
    Senior Member TW-Brian's Avatar
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    That is a good idea, but I have been kicking around another approach that is even "less invasive". There are lots of bolt-on swing arm extensions available for dirt bikes and street bikes. The problem may finding a design that would provide for the modest 1-3" that most of us would be looking for.

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  6. #5
    Senior Member Fred's Avatar
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    I would buy and install any of those options happy that get away from the TW's cam snails for chain adjustment. I miss the screw adjustments on my older enduro bikes.
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  7. #6
    Senior Member joeband's Avatar
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    again as someone goes to milk the cow.... tw-brian comes back in with the cheese.
    1994 TW226- 6spd. 10w-40 synthetic, XTHidden Content , XT225 stainless header, +2" Joemama swingarm, lizrd cooler, +20% fork springs, +25% rear spring, 2001 speedo w/ trip odo, pro taper atv bars, bark busters, shinko 241 front tire, front fender w/ mr bracket bracket, Hidden Content , o-ring chain, ricochet skid plate, Hidden Content , XT225 rear brake cam lever, folding-tip shifter, cycle rack, kolpin 1.5 aux tank & 1450 pelican case. Hidden Content or Hidden Content

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  8. #7
    Senior Member PlacerLode's Avatar
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    Interesting idea for sure but the final product looks a bit clunky and with this design the minimum extension would be 3 to 4" total range maybe 3 or 4 to 6" not that it couldn't be redesigned with the adjuster in back to allow for a shorter extension. CONS price to produce yet another $200 to $300 CNC TW accessory


    The steel weld on might be $5 in mild steel and maybe $10 in pattern cutting given a decent quantity of say 50 sets

    With the steel we can build for any type of adjuster easily getting away from the cam if desired (I don't mind the cam)
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  9. #8
    Senior Member PlacerLode's Avatar
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    Heres what the final steel design would resemble these are the factory XT225 swingarm ends

    note the ease of welding both sides this is a very strong design and again we could choose any style of chain adjuster we desired

    For a 1"extension we would actually cut away most of the existing axle slot on the OEM arm before we added this weld on tab
    SAM_7252.JPGSAM_7253.JPGSAM_7254.JPGSAM_7255.JPG
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  10. #9
    Senior Member TW-Brian's Avatar
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    A bolt-on version made just for the TW would not need to be clunky. Here is what I mocked up from a scrap piece of wood to illustrate what I had in mind to allow a 1.5-3" extension.
    (Of course, you would not want to use wood , and you would also want to mill out the axle slots that I have just drawn on. You would also want to blend it in to match up with the profile of the stock swingarm, in addition to adding features for the snail adjusters and the tongue for the brake plate. This mockup was just to illustrate the concept.)

    This approach would not require any modifications to your stock swingarm and could be easily reversed, say to switch back and forth between a stock and an ATV tire.

    IMG_2108-1.jpg

    IMG_2109-2.jpg

    Is there anybody out there with a mill interested in taking this concept to the next step and building a working prototype?
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  11. #10
    Senior Member PlacerLode's Avatar
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    Nice idea but I think a 2.5" to 3" extension would be the minimum with this design I'm looking for 1.5" in most cases but never more than 2" and as little as 1"
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