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Author Topic: Stretching The LT500 Stock Swing Arm  (Read 608 times)

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Stretching The LT500 Stock Swing Arm
« on: March 11, 2013, 06:31:07 am »
Anyone ever stretched the stock swing arm? Also I've seen some pictures of stock swing arms with holes drilled in them to lessen weight is this ok or does it jeopardize the strength?
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Re: Stretching stock swing arm
« Reply #1 on: March 11, 2013, 06:51:42 am »
i have stretched both a 250and 500 to a +3
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Re: Stretching stock swing arm
« Reply #2 on: March 11, 2013, 08:03:47 am »
What gauge aluminum plate did you use on the 500 also did you drill any holes in the swinger to lighten it?
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Re: Stretching stock swing arm
« Reply #3 on: March 11, 2013, 01:39:05 pm »
i used 3" 3/16 wall square tubing on mine. and no holes
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89 zilla Bartlett racing Dune Porting,42.5mm rx'd carb,DrQ pipe, vf3 reeds
 89 lt250r custom frame with Bartlett racin Dune Porting, DR Q pipe, zilla carb, vf3 reeds
 00 426ex 12:5 comp, stage2 cam, full yosh exauast, +2+1 a arms, +2 lons

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Re: Stretching stock swing arm
« Reply #4 on: March 11, 2013, 04:46:41 pm »
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Re: Stretching stock swing arm
« Reply #5 on: March 11, 2013, 05:08:17 pm »
what is that stock, +2, +4? or stock, +4, +8?
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Re: Stretching stock swing arm
« Reply #6 on: March 11, 2013, 05:38:01 pm »
Definitely stock +4 and +8. What grade aluminum and thickness did you use?
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Re: Stretching The LT500 Stock Swing Arm
« Reply #7 on: March 12, 2013, 07:56:28 pm »
that first one in the pic of 3 looks like its shortened.  looks to short to be stock. 

i was going to extend a 500 swinger years ago, farthest i got was cutting it in half.  still have it in 2 pieces. 
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Re: Stretching The LT500 Stock Swing Arm
« Reply #8 on: March 13, 2013, 03:14:58 am »
Now that I look at it again I'm pretty sure you're right Shawn. What thickness of aluminum plate would you use and 6061 or higher right for strength? Considering doing this and don't really have a clue what thickness and grade of aluminum I should be welding in for the extension.
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