David Sher Posted May 30, 2016 Share looking for a shim that will allow me to use a 31.6mm seatpost on a 34.9mm seatpost frame.i have attached a photo to show what i am looking for Link to comment Share on other sites More sharing options...
Martin PJ Posted May 30, 2016 Share Try eBay, if you don't mind waiting four weeks at least. Link to comment Share on other sites More sharing options...
JXV Posted May 30, 2016 Share Shims just creak and squeak. BTDT on an old Giant. Rather sell your thin seatpost and buy the correct size. Sent from my SM-G900F using Tapatalk Link to comment Share on other sites More sharing options...
bikebloke Posted May 30, 2016 Share Olympic cycles has box of them ask Gregory he knows where to find them I got a 30.9 to 27.2 it was about R100 and it doesn't squeak ever (grease) Link to comment Share on other sites More sharing options...
AlanD Posted May 30, 2016 Share I used a make shift one from a beer can, worked well and never creaked or squeaked. Finally got a proper one from the US and works a dream. No creaking or squeeking. If you can't find locally, then you will have to import it. Link to comment Share on other sites More sharing options...
Thermophage Posted May 30, 2016 Share Dial'd Bikes May have... http://dialdbikes.co.za/components/saddles-and-seatposts/saddles/alloy-shim.html Link to comment Share on other sites More sharing options...
David Sher Posted May 30, 2016 Share Olympic cycles has box of themask Gregory he knows where to find themI got a 30.9 to 27.2it was about R100 and it doesn't squeak ever (grease)Thanks Link to comment Share on other sites More sharing options...
DJR Posted May 30, 2016 Share You can make your own by: 1. Buying a few different cans of beer. Drink them, cut the beer cans up with kitchen scissors and try them for thickness. They vary quite a bit. (I recommend you do this anyway, whether you use any of the other 2 methods or not) Usually works well if you need a fairly thin shim. You want the shim to be at least 100mm long and to go well past the top tube of your bike. Position it carefully in the frame with seatpost inserted, tighten clamp, then use a wooden or plastic instrument to burnish the top 1or 2 mm open to form a lip that will prevent your shim from slipping down the seat tube. 2. Calculate the difference between your seat tube diameter and what you want it to be, divide by 2 and go shopping at your nearest art shop. Ask them for copper / brass plate of that thickness. (It is used for engraving and come in different thicknesses) Cut as above, form a lip and you have a shim. The plate is a bit expensive and it doesn't have beer in it. 3. Order from a bike shop. Works best if you need quite a thick shim. Ps. No.1 is my best method, but the OP did the right thing, except for leaving out the beer! Link to comment Share on other sites More sharing options...
Max Headroom Posted May 30, 2016 Share Hi - dude, no point in advertising and then acting before you give peeps time to see your ad. i.e. mistake to ask for an item at 1pm and then order one at 4pm, before a fair number of people logged on and seen your request. - I have a shim you can have for free - you just need to collect it. Link to comment Share on other sites More sharing options...
BaGearA Posted May 30, 2016 Share Seeing all the interest anyone got a 31.6 to 30.9 shim for me?? i.e. to make a 31.6 narrow to 30.9 Link to comment Share on other sites More sharing options...
DJR Posted May 30, 2016 Share Seeing all the interest anyone got a 31.6 to 30.9 shim for me?? i.e. to make a 31.6 narrow to 30.9 Drink lots of brandy and coke and use a 4 pound hammer to "expand" the seat tube ? Then claim under lifetime frame warranty? (You did notice the Comic Sans, didn't you?) Link to comment Share on other sites More sharing options...
BaGearA Posted May 30, 2016 Share Drink lots of brandy and coke and use a 4 pound hammer to "expand" the seat tube ? Then claim under lifetime frame warranty? (You did notice the Comic Sans, didn't you?)aii Link to comment Share on other sites More sharing options...
Martin PJ Posted May 30, 2016 Share Drink lots of brandy and coke and use a 4 pound hammer to "expand" the seat tube ? Then claim under lifetime frame warranty? (You did notice the Comic Sans, didn't you?) Yeah, big hammer and lots of lube. Link to comment Share on other sites More sharing options...
David Sher Posted May 31, 2016 Share Hi - dude, no point in advertising and then acting before you give peeps time to see your ad. i.e. mistake to ask for an item at 1pm and then order one at 4pm, before a fair number of people logged on and seen your request. - I have a shim you can have for free - you just need to collect it.hi, they dont stock any of the ones i want, can i please collect your one? Link to comment Share on other sites More sharing options...
imagedee Posted May 31, 2016 Share Seeing all the interest anyone got a 31.6 to 30.9 shim for me?? i.e. to make a 31.6 narrow to 30.9 me too please!have an old specialized command post and need to fit into Cotic Solaris frame. Link to comment Share on other sites More sharing options...
Martin PJ Posted June 1, 2016 Share me too please!have an old specialized command post and need to fit into Cotic Solaris frame. Is the seatpost 31.6 or 30.9? I thought that the original poster was joking about shimming a 31.6 seat post to a 30.9 frame. Link to comment Share on other sites More sharing options...
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