26.8 - 27.2 seatpost shim mystery?

[Boothy]

Hey all,

Am I kidding my self that a 26.8 - 27.2 seatpost shim even exists? I bet you're all going to tell me to use a beer can, any one ever tried this?

Oh, and another thing. What size seatpost collar should fit with a 27.2 seatpost, does it need to be a tad larger than the post to accomodate the frame?

Cheers troops

 

[fatfixie]

Coke can actually works better......

Have done it a few times. also works well for loose headset cups etc

Andy

 

[one-eyed_jim]

Am I kidding my self that a 26.8 - 27.2 seatpost shim even exists?

I don't know of one. Shims are usually intended to go from a common smaller size to a rarer large one. Most people in your situation would just buy a common 27.2mm post.

I bet you're all going to tell me to use a beer can, any one ever tried this?

On a hack bike, yes many times. A couple of wraps of beer can should do the trick. On anything I valued I'd spend the money on the right size post.

Oh, and another thing. What size seatpost collar should fit with a 27.2 seatpost, does it need to be a tad larger than the post to accomodate the frame?

Depends on the frame. A Cannondale will want a 31.8, some steel Konas want a 30.0, some other steel frames use 28.6mm. It basically needs to be a good fit to the top of the seat tube. It's often, but not always, the same size as your front derailleur clamp.

 

[Err]

I'm using coke can on my bike atm for this purpose, but it is not ideal.

Roll it into a cone form and insert the tip into the tube and the seatpost into the wider end to aid insertion.

 

[xizang]

insert the tip into the tube and the seatpost into the wider end to aid insertion.

 

[tiboltrider]

I use a Redbull can to go from 27.0 to 27.2. It gives you wings!

 

[Boothy]

Many thanks all involved...

Looks like it's time to shred old cans.

Pah.

 

[konahed]

Try a red bull can, it has more natural bend.

 

[Err]

Careful cutting to prevent distortion of the edges of the aluminium will also aid insertion.

 

[Boothy]

All tips welcomed,

Cheers.