5/8" seat post shim/adapter?

[Dr. Tankenstein]

Hey all,
Pardon my ignorance of true vintage bicycles, but is there some kind of shim or insert used for 5/8" seat posts?
I ask because I picked this post on eBay for a '40s 50s JC Higgins Colorflow'

I'd love to use it on my 56 Higgins, it appears to have the same frame as a Colorflow. But the seat tube is more like 13/16 or 7/8. Is there a piece that gets inserted like a shim to make up the difference?

Any/all help is much appreciated.

Cheers,
Dr. T

 

[thatismytruck]

you could make a shim or something but the Colorflows had two seat post diameters. 5/8 like this and then 13/16. I cut a 13/16 seat tube and welded it to one of these for my recent Spaceliner build.

 

[XC204]

I did the same for my Manton & Smith to use the seat I wanted.

 

[Dr. Tankenstein]

Re: 5/8" seat post shim/adapter?

Perfect, thanks lads!

Cheers,
Dr. T

 

[deorman]

http://www.niagaracycle.com/index.php?c ... =2a&page=1

 

[Dr. Tankenstein]

doerman,
It looks like Niagara is having issues.

Can you tell me what the product link is to? Maybe I could search for it directly.

Cheers,
Dr. T

 

[dogdart]

A friend of mine made some pretty nice adapters from black pipe with a hammer , a vise and a hacksaw . Looked almost original , wish I had pics :?

 

[thatismytruck]

doerman,
It looks like Niagara is having issues.

Can you tell me what the product link is to? Maybe I could search for it directly.

Cheers,
Dr. T

lots of shims at niagara, but I didn't see any that do what you are looking for.

 

[Dr. Tankenstein]

Re: 5/8" seat post shim/adapter?

Me either, guess I'll keep looking. I'm sure I have some old seatposts around that I can sleeve around it like a shim.

Cheers,
Dr. T

 

[deorman]

The original shims are pretty thick, and apparently made of unobtainium. :roll: In retrospect, chopping an old Schwinn post may be your best bet.

 

[ozzmonaut]

I just sold an old western flyer that had the shim. They are really thick, and the one I had fit over the top of the seat tube and at the top fit a 5/8" post. I think they were used on most of the prewar cwc frames. Basically it is a shim and the seat post clamp combined.

 

[Dr. Tankenstein]

Re: 5/8" seat post shim/adapter?

Yep, that's what I remember seeing. Good to know that, while I might be crazy, at least I'm not alone. :mrgreen:

Does this part go by another name?

Cheers,
Dr. T

 

[Oldskool66]

Adapter Seat Post I found this on Amazon. It's a 13/16 seat post with a 7/8" top

 

[Bigcam59]

I recently used a socket extension I picked up at Tractor Supply on my Western Flyer. Long, chrome and strong!