Shims for an 84 Quadangle

[southern andy]

A bit of info please chaps........... Are there different shim sizes as i have a Uni Pro and it is to be fitted to an 1984 SE Quadangle. The problem is the seatpost doesn't fit the frame like i was told. So in preparation for this i acquired a shim from an Aero Reflex to sit inside the Quadangle.

Sadly it still isn't enough and the clamp just doesn't tighten up on the post.


So..... What size do i need or what can i do about it, i was hoping to ride the bike so packing out with electrical tape isn't an option.

Many thanks in advance

Andy

[HEYWOOD BMX]

  Don`t know about size,but there are plenty of shims on the market. 

[southern andy]

Hmmmm, the seat post James is 20mm and the space available in the frame is 23mm, when i fit the shim i have it still has 2mm of play in it. I'm assuming that even with my small pea brain there must be thicker shims out there.

[HEYWOOD BMX]

http://www.chainreactioncycles.com/Categories.aspx?CategoryID=215

Seems to be loads,but nothing smaller than a 25mm.I`ll have a nosey and see if I can find something suitable.Try asking in the wanted section,prob your best bet.


                            James

[fouronethreeoh!]

Old school seat posts were generally 7/8 inch, 22.2mm.
Except aluminium rippers/race incs etc that were 13/16 inch, 20mm.
Due to the thicker wall tubing of alu.
If the Uni post is 20mm, and its a uni shim this should take it to 22 mm.
There is quite often some play between post and frame until it gets clamped up.

[southern andy]

Fingers crossed i may be sorted on this now, a very helpful Rad Member is sending me a thicker shim, he seems to think it may even be a Uni one.

Basically i have been using a 22.2mm post on the bike but the Uni Pro's post is thinner than that, bit weird as my other Uni Pro fits my other bike without a shim, i assume they made two different size posts.

[QUADROPHENIA]

wedge a screwdriver down the side

[southern andy]

Wish i'd thought of that earlier.