RodTi Posted March 16, 2011 Posted March 16, 2011 (edited) Pffftttt. [This appears to have been sorted... I was apparently too timid - and nervous that my mighty arms would snap something... LBS got it in this morning - if you're really bored, read my post on page 2. Thanks for all the suggestions Hubbers! ] A picture tells a thousand words... The 'new' (really old 2nd hand frame) supposedly has a 27,2mm seat post diameter.This is confirmed on all the websites etc, and given that my other 27,0mm slips in way too easily, makes sense. Ordered a post off CRC, since I wanted a silver one. Popped it in tonight.Well, actually, I tried to pop it in... see for yourselves... Now - what are my options? The other Ti frame I have, is old-skool - and as mentioned, takes a 27.0mmm Also bought a Thomson for it... Long story short, it didn't fit. Black one, needed to sand all the paint off on the bottom of it, to get it in. I had a 26,8mm - which was too narrow - but it appears the ideal size would actually have been a 26,95mm Now the same thing has happened again...Just to be clear - it gets in for the first few +/- 5 cm's, but to get it further, then involves serious elbow grease... Did that to the other one - and boy, was it a mission to get it out... I'm not going down that route again... Which has me wondering - either Thomson occasionally gets their sizing wrong - and I'm the unluckiest doormat in the history of mtb'ing, having drawn the two posts in the space of a year that were a bit on the thick side. Yes - unlikely. Or - Titanium shrinks over time... Ja look, I'm grasping at straws here... But the question remains - what to do? a.) Sell the seatpost - I'm sure I'll find a Hubber who wants a silver one.Buy a 27,0mm - and consider shimming it? b.) Take the sandpaper to it again... Your thoughts, as always, will be appreciated... Edited March 18, 2011 by RodTi
EigerSA Posted March 16, 2011 Posted March 16, 2011 pretty sure it's going to take a bit more than just a little sandpaper what's the verneer say? what the hell is happening with that chain stay on the drive side? or is it just the picture?
intern Posted March 16, 2011 Posted March 16, 2011 Most of us complain that our, uh, seat posts, are too short....
RodTi Posted March 16, 2011 Author Posted March 16, 2011 Most of us complain that our, uh, seat posts, are too short.... Tjop!
RodTi Posted March 16, 2011 Author Posted March 16, 2011 pretty sure it's going to take a bit more than just a little sandpaper what's the verneer say? what the hell is happening with that chain stay on the drive side? or is it just the picture? The pic has done no favours to that chainstay - it's perfectly reasonably normal in real life... Yes - the vernier.... I've yet to come across a LBS that actually has one - and schlepping the frame off to Midas to quickly use theirs, is probably an option - but I'm not sure it will help much... Put simply - it's supposed to be a 27,2 - and it's not a 27,0. There are no options in between as far as seatposts are concerned (AFAIK), so I either do my bit to it at home, or 'shim-up' from a 27,0mm....
sputnik-f1 Posted March 16, 2011 Posted March 16, 2011 Why don't you contact Litspeed and ask their opinion. Is it possible that there is some build-up of sorts inside the the seat tube?
The Drongo Posted March 17, 2011 Posted March 17, 2011 If it is only going in as far as the point where the welds start, then you might find that slight distortion to the steel inside the tube has narrowed it ever so ever so, enough to make you the unluckiest doormat in history. Can you feel any distortion if you run your finger round and up and down the inside of the tube? Methinks a dremel with sanding drum wheel, an extension, and slow patient abrasion might work. (and maybe if you put a real doormat outside, the universe will quite treating you as one. )
RodTi Posted March 17, 2011 Author Posted March 17, 2011 The dremel would be to simply clean up the tube, and not necessarily to take off mm's? It still feels smooth - no ridges etc... It probably could go beyond the welds, but as mentioned - elbow grease would be required... To be honest, think the sanding route will do the trick - but then I'm ruining a perfectly good post... Which makes the shim over the 27,0mm post option more appealing... Pah.
TNT1 Posted March 17, 2011 Posted March 17, 2011 The dremel would be to simply clean up the tube, and not necessarily to take off mm's? It still feels smooth - no ridges etc... It probably could go beyond the welds, but as mentioned - elbow grease would be required... To be honest, think the sanding route will do the trick - but then I'm ruining a perfectly good post... Which makes the shim over the 27,0mm post option more appealing... Pah. Yeah, looks like a pita either way. For my money, I'd either sand the post, or go the shim route on the smaller post. Last thing I'd do is try and sand inside the frame tubes. Don't want to entertain the possibility of weakening that in any way.
RodTi Posted March 17, 2011 Author Posted March 17, 2011 Why don't you contact Litspeed and ask their opinion. Is it possible that there is some build-up of sorts inside the the seat tube? I have contacted them before - usually takes about 4-6 weeks for an email reply... so would rather take my chances this side!
RodTi Posted March 17, 2011 Author Posted March 17, 2011 Yeah, looks like a pita either way. For my money, I'd either sand the post, or go the shim route on the smaller post. Last thing I'd do is try and sand inside the frame tubes. Don't want to entertain the possibility of weakening that in any way. Agreed in not wanting to take a dremel to it... as it is, that tube doesn't appear to be particularly thick! Sanding the post remains the quickest option... but the more I think about it, the more I'm a bit concerned... The black post that I sanded down to get in to the 27,0mm - was, well, painted black. The sanding I did virtually only removed the paint/anodizing(?), as it were, and appeared to take very little (if any) off the actual post... With this post being silver - I presume it to be the natural colour of the metal used, possibly with a thin layer of protective coating(?) - so sanding it down will take more (presumably) off the actual post... I guess the safest option would be to shim up... By sanding, I'm not only potentially weakening the post - but I might need to take more off than I think in order to make it fit... Will take the frame into the LBS that I bought it from, and get their views... Expect to see a Thomson Elite Inline 27,2mm x 410mm Silver seatpost up for sale soonish...
knersis Posted March 17, 2011 Posted March 17, 2011 Why not send the 27.2 back to the shop for a credit and buy something else, if it is brand new.
RodTi Posted March 17, 2011 Author Posted March 17, 2011 Why not send the 27.2 back to the shop for a credit and buy something else, if it is brand new. Bought it off CRC - since the suppliers don't stock silver ones in RSA. Might end up doing that - will chat to the shop. Eitherways, if I decide on the 27,0mm option, will again have to go via CRC...
Shebeen Posted March 17, 2011 Posted March 17, 2011 i've had issues before getting a new seatpost, where the old one was a 27.0. couldn't find one in short notice. LBS queried the sizing, and sure as hell it should have been a 27.2. mentioned this to my buddy, and he confirmed that he shopped around until only the 27.0 fitted well. tried on a few there, and one fitted more snugly than the others. so bought it. so my moral of the story - something like this should probably have had a trip to the bikestore first. and ja, most bike stored have digital vernier callipers these days. well the ones i go to do
Johan Bornman Posted March 17, 2011 Posted March 17, 2011 If the supplied seatpost really is 27.2mm, it will be worth your while to stick with its present dimention. It is a standard, after all. Have your seat tube reamed out. A framebuilder can do it for you and since you are in the Province, you are in luck. South Africa's last surviving framebuilder lives there somewhere - Frans du Toit. Call him, ask him if he has a ream and do the seat tube for once and all.
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