They had used 26.4 posts previously, but that was when their seat tubes were ED28.6. For the P7 and C16R they went over to ED31.8 seat tubes as a design feature in the interests of greater stiffness there. They could have used a 29.8 or 30.0 post, but they weren't in great supply in those days and anyway were much heavier than a 26.4 (and it is a steel post I seem to recall). Orange were far from alone in using shims when designing a frame with a 31.8 seat tube. e.g., all USE posts were designed to be used with a shim.
Orange C16R seatpost (+ new (?) removal technique)
- Thread starter jaypee
- Start date
Quick update for anyone interested. I spotted a NOS Kalloy 29.8 seatpost on eBay (quite a rare size) and picked it up for a tenner so I decided to try and get the shim out after all.
As Paddy suggested I equipped myself with a flat-head screwdriver and, for good measure, a big old chisel that had no edge to it anyway. Wasn't getting far with the screwdriver and thought if I could get theend of the chisel into the notch on one side and the side of it into the other notch I could get some leverage for twisting the shim.
Well whadyeknow! It wasn't fused after all and started to twist. Eventually I got enough to grip with plyers and the rest is history!
Seatpost fits a treat and its mahoosive so I'm thinking this bike might fit me after all
Here's some pics
Shim part way out
Then I remembered to get a shot with the chisel (obviously by then it was no longer needed)
Twisting it out with plyers (in case you just couldn't imagine what that might look like ;-) )
And it's out!
Seatpost almost as long as seat tube!
And it is up to min insert - you can see the grease line
As Paddy suggested I equipped myself with a flat-head screwdriver and, for good measure, a big old chisel that had no edge to it anyway. Wasn't getting far with the screwdriver and thought if I could get theend of the chisel into the notch on one side and the side of it into the other notch I could get some leverage for twisting the shim.
Well whadyeknow! It wasn't fused after all and started to twist. Eventually I got enough to grip with plyers and the rest is history!
Seatpost fits a treat and its mahoosive so I'm thinking this bike might fit me after all
Here's some pics
Shim part way out
Then I remembered to get a shot with the chisel (obviously by then it was no longer needed)
Twisting it out with plyers (in case you just couldn't imagine what that might look like ;-) )
And it's out!
Seatpost almost as long as seat tube!
And it is up to min insert - you can see the grease line
And in all its glory.
viewtopic.php?f=6&t=269015&p=2010642#p2010642
The bulge disappeared when the shim came out.
viewtopic.php?f=6&t=269015&p=2010642#p2010642
The bulge disappeared when the shim came out.
grogee
Retro Guru
I've been reading this with interest, and for anyone else with an Orange looking for a suitable post I found this bargain on the 'Bay: an Orange branded post of 29.8mm!
http://www.ebay.co.uk/itm/350961416970? ... EBIDX%3AIT
http://www.ebay.co.uk/itm/350961416970? ... EBIDX%3AIT
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