Richteacurry
Dirt Disciple
Makes sense. Thanks for your help.
Seatpost diameter for 1995 Orange P7
- Thread starter Richteacurry
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Richteacurry
Dirt Disciple
An update for those who might be interested.
I bought a new 27.2 dia x 400mm long seatpost as I discovered I needed the extra length to fit the bike properly, and a 27.2 to 29.4 shim to make it fit. However even with the seat bolt cranked up to the max, the post still slips so I'm going to order a 27.2 to 31.4 shim from CRC to see what that does.
Thinking about it, does this make sense?
I bought a new 27.2 dia x 400mm long seatpost as I discovered I needed the extra length to fit the bike properly, and a 27.2 to 29.4 shim to make it fit. However even with the seat bolt cranked up to the max, the post still slips so I'm going to order a 27.2 to 31.4 shim from CRC to see what that does.
Thinking about it, does this make sense?
Richteacurry
Dirt Disciple
You're right, I looked at my earlier post. It's been a long week at work!
I'm gonna get a USE thermoplastic shim 27.2 to 29.8
I'm gonna get a USE thermoplastic shim 27.2 to 29.8
The Orange website lists seatpost and shim sizes for past models if you want to be spot on
http://www.orangebikes.co.uk/support/faqs/
http://www.orangebikes.co.uk/support/faqs/
paulwakinshaw
Retro Guru
Ok I went down this route on my '95 P7 two months ago. I got a 27.2 to 29.8 shim. My seat tube was slightly oval like yours but the shim is thin enough to enable you to manipulate it into the seat tube. I got a brand x item from chain reaction in aluminium. Fit was a little tight at first around the top of the tube but once inside it was a good fit.
Top tip is to apply a thin layer of grease on the outside of the shim so it makes it easier to remove in the future.
As for your post slipping I have found an excellent double clamp that clamps on the seat tube and post. Take a look at the exotic carbon website (just google the name) and look at the 31.8 to 27.2 seat clamp. It's a bit of a fiddle to fit but has totally eliminated post slip for me.
Happy to help - wako
Top tip is to apply a thin layer of grease on the outside of the shim so it makes it easier to remove in the future.
As for your post slipping I have found an excellent double clamp that clamps on the seat tube and post. Take a look at the exotic carbon website (just google the name) and look at the 31.8 to 27.2 seat clamp. It's a bit of a fiddle to fit but has totally eliminated post slip for me.
Happy to help - wako
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Hope you manage to get your post to fit, for such a simple thing it can be a total nightmare sometimes :roll: 
Richteacurry
Dirt Disciple
CRC have just delivered my 27.2 to 29.8 USE thermoplastic shim, just put it quickly and all looks favorable. Test ride this weekend hopefully.........
Richteacurry
Dirt Disciple
Just noticed on their website that Orange sell a 27.2 to 29.8 alloy shim for a P7 at £4.99...............
