built my own swingarm

[posplayr]

My approach

Here is what I'm putting on my 86 GSXR 1100; period braced piece apparently was on the Schwantz 34 bike at one time. There is a picture attached, and the swing arms don't look the same, but it would have been on this vintage bike (1st Gen Slabbie 1100 swinger).

A modified Airtech tire hugger is my doing, and the chain guard is off a limited.

Pos

[Nessism]

my input is my own safety, full stop. another thread where people may label me as selfish, but i dont care. i would not trust that swing arm on my bike,end of story.
and how do you know who welded my bike and what with? you would be very surprised!!!!!

No one is asking you to put that swingarm on your bike. This thread is not about you.

[Nessism]

Here is what I'm putting on my 86 GSXR 1100; period braced piece apparently was on the Schwantz 34 bike at one time. There is a picture attached, and the swing arms don't look the same, but it would have been on this vintage bike (1st Gen Slabbie 1100 swinger).

A modified Airtech tire hugger is my doing, and the chain guard is off a limited.

Pos

I'm missing your point again. Yes, that is a nice swingarm. A road race swingarm. It's completely different from the OP's swingarm. Are you suggesting that he should brace his like your swingarm?

[Agemax]

No one is asking you to put that swingarm on your bike. This thread is not about you.

its not about you either but you seem quite happy to reply to it and put down everyone elses answers, except yours, because you are always right!

[posplayr]

I'm missing your point again. Yes, that is a nice swingarm. A road race swingarm. It's completely different from the OP's swingarm. Are you suggesting that he should brace his like your swingarm?

Ed I'm Fing suggesting that I'm putting it on my Fing bike; If you dont Fing chill I'm going to just plain Fing ignore U.

[greg78gs750]

sheesh. it's been a long winter, eh guys?

[posplayr]

http://profilconsult.com/index.php?o...=5&func=fb_pdf


Re:swingarms.com

Posted by 531blackbanshee - 2008/12/16 21:26
_____________________________________

i built my own swingarm out of 4130 chro-moly(i also built my own tubing bender that i used to bend the
tubing).i have about 1500 miles on it and am very satisfied with it.it is extended 2" over stock and uses a
2000 r1 wheel and brake.i built and machined every piece of the swingarm including the pivot.it is
amazing what you can dream up when you have the skill and equipment to get the job done.i also
converted from 630 to 520 non o-ring chain while doing the conversion,and also fabricated my own
offset countershaft sprocket.quite a difference in handling with a rigid arm and a 200mm tire.here is the

rightside,after a poker run in the rain where i fried the coils.thus the trailer shot.

http://i275.photobucket.com/albums/jj287/531blackbanshee/z1rbigtire005-1.jpg

Chrome moly swinger someone fabbed

[Nessism]

Now it's my turn to be scared...

[Nessism]

This one looks like it would be easy to fabricate... http://redlinecycle.com/swingarm%20-...20fit%202.html

[posplayr]

Road tested

Ed,
Apparently this is the same arm, but with the bike is come complete shape. He is running a 180 on the rear with at least some 1500 miles.

Also that is a clean Kawi swinger.

If you start with a stock swinger and are mindful of welds/gussets, hopefully stiffness goes up from there.

Jim

[chef1366]

I've got a spare wheel barrel frame if you all want to build a swingarm.

[tkent02]

I've got a spare wheel barrel frame if you all want to build a swingarm.

I built mine out of an old swingset.

[briyenkieth]

wow and I thought I was wound up tight. At least I got an excuse, I quit smoking. I agree with you guys that it needs some brace of some sort but do we need to talk so much $hit to each other and bash bikes that aren't being discussed here. Like hammered I'm also a certified welder and I "know" my $hit ain't going to break, so lay off all the blah blah blah.
It takes real balls to build something yourself. This dude posted his build, I'm sure, looking for constructive feedback. Not a bunch of bull$hit that took up eight pages.

Edit: upon second look it appears to me, not an engineer, to be flimsy looking. Particularly around the axel. Is the axel box from a stock swingarm? If so there's a weak link there, unless it was slugged together at that joint. I do understand that you used 1/4" wall but stock wall thickness is on the thin side. Just a thought but maybe you could start fresh with new leggs and have a machine shop cut you some new "boxes". Then put the bend in them to get the angles. Still have to agree about the brace even after. I mean why not! Custom braced swingarms are the cats pajamas and draw lots of ewws and ahhs. Plus all the added strength. At that point though $ might be the same as grafting a proper arm from another bike. Just thinking cause I can't sleep.

[Hammered]

Now it's my turn to be scared...

Why would this Swingarm scare you?. Do you know the properities of 4130 CM?, Even at the same wall thinckness it will out perform the thinner mild steel STANDARD tubing used in a stock swingarm.

[Nessism]

Why would this Swingarm scare you?. Do you know the properities of 4130 CM?, Even at the same wall thinckness it will out perform the thinner mild steel STANDARD tubing used in a stock swingarm.

The diameter of the tubing on that swingarm is small, which will create a flexi structure. 4130 may be stronger than mild steel, but the stiffness per unit of material is the same.