[hophead]

Originally Posted by Dean

There is no welding equivalent for aluminum?

You can weld aluminum and you can weld steel, but you can't weld aluminum to steel.

[hophead]

After a little research on the interweb, your bike uses a 21.15mm or 13/16" seatpost. Schwinn never used a 20.8mm, nor did any other manufacturer that I could find. It's still gonna be a hard one to track down with a modern style saddle interface if it exists at all.

You may not need a new seatpost at all. Maybe just one of these....

[speedfan]

I am going to have the machine shop press the old into the new. I have to get proper length and cut new post. Will post pics after complete, thanks for the suggestions.

[speedfan]

Where did you find this device, looks perfect?

[hophead]

Here: Brooks Parts and Accessories at www.wallbike.com

Unfortunately, They are out of stock. The saddle clamp pictured above is made by Ideale. Brooks makes them too.

[wild]

I think you might find one of them a a used bike place that fixes up oldys but goodys.

[WesleyJack]

I have that same bike, the post is a 13/16" post, very skinny little bugger, but this is a supper easy fix. Using about $5 seat guts from your LBS and a $4 Wald seat post that is 13/16" with a bubble to 7/8" you can put any modern seat on this pretty much.

http://www.amazon.com/Wald-940-10-8-Inch-10-5-Inch-Steel/dp/B00139Z3JA
thats the post.