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General Category >> Rubber Side Down! >> Swingarm Silliness
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Message started by Armen on 09/15/19 at 05:11:58

Title: Swingarm Silliness
Post by Armen on 09/15/19 at 05:11:58

So, I've been playing with a very cool aluminum alloy called 7068. Rated as as strong as 404 Stainless (although it prob flexes a tiny bit more).
Decided to make a swingarm pivot pin out of the stuff. Figured that loaded in shear, it really can't go too far wrong (and really can't flex).
Made a pin and a nut. Figure that they are so cute (and can't rust), that I can leave the caps off the ends.
Goal is to knock 100 pounds off the bike. This is about 1/2 pound. It all adds up :-0
BTW, I never use the torque spec for a swingarm pin. I pull the shocks and slowly tighten the swingarm pivot nut until the swingarm just falls under it's own weight. No slop, no binding, no drag. They seem happiest this way.

Title: Re: Swingarm Silliness
Post by Armen on 09/15/19 at 05:12:44

And now in aluminum...

Title: Re: Swingarm Silliness
Post by ZSteele on 09/15/19 at 05:17:38

Are you planning on selling all of these light weight replacements down the road Armen? Especially as a set.

Title: Re: Swingarm Silliness
Post by Armen on 09/15/19 at 05:27:32

Nope, not for sale. Not cost effective for me to make them.
Just posting it as puttering porn.

Title: Re: Swingarm Silliness
Post by ZSteele on 09/15/19 at 05:51:13

Drat, was lookong forward to the idea of a 200lb cafe racer!

Title: Re: Swingarm Silliness
Post by Dave on 09/15/19 at 06:25:29

646D4A5B5B525B3E0 wrote:

Drat, was lookong forward to the idea of a 200lb cafe racer!

Then you should start with something smaller than the Savage......the engine weighs close to 100 pounds!

Title: Re: Swingarm Silliness
Post by ZSteele on 09/15/19 at 07:26:09

But the thumpy is so much funnnn [ch128521]