bomac
08-29-12, 06:13 PM
Just bought our first tandem and want to change the stoker bars. That requires a stem change - the seatpost is a 27.2 and the bars I want to instal are 31.8; does anyone know a manufacturer of this diameter combo?
Tandem Cycling - Any suggestions for a stoker stem replacement?
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photogravity
08-29-12, 06:16 PM
It might be easier and cheaper to purchase a bar that has a 26.0 clamp. I do not know if the combination you are looking for is available or not.
colotandem
08-29-12, 06:35 PM
This should work for you. You will need a shim, but we have used with 27.2 seatpost with great success.
http://www.co-motion.com/index.php/product/co-motion-adjustable-stoker-stem (http://www.co-motion.com/index.php/product/co-motion-adjustable-stoker-stem)
http://www.co-motion.com/index.php/product/co-motion-adjustable-stoker-stem (http://www.co-motion.com/index.php/product/co-motion-adjustable-stoker-stem)
DubT
08-30-12, 04:45 PM
This should work for you. You will need a shim, but we have used with 27.2 seatpost with great success.
http://www.co-motion.com/index.php/product/co-motion-adjustable-stoker-stem (http://www.co-motion.com/index.php/product/co-motion-adjustable-stoker-stem)
That is a good choice if you want an adjustable stem, however if a standard stem will work then you can buy a new stem that is the correct length/angle and use a shim to adapt it to your 27.2 seatpost. That is exactly what we did.
http://www.co-motion.com/index.php/product/co-motion-adjustable-stoker-stem (http://www.co-motion.com/index.php/product/co-motion-adjustable-stoker-stem)
That is a good choice if you want an adjustable stem, however if a standard stem will work then you can buy a new stem that is the correct length/angle and use a shim to adapt it to your 27.2 seatpost. That is exactly what we did.
TandemGeek
08-30-12, 05:07 PM
Just bought our first tandem and want to change the stoker bars. That requires a stem change - the seatpost is a 27.2 and the bars I want to instal are 31.8; does anyone know a manufacturer of this diameter combo?
Control Tech & Dimension both offer 29.8 w/shim x 31.8
Co-Motion's is probably a re-branded Dimension.
Depending on how much length and rise you need for the stoker stem, you may also be able to use a longer (150mm) threadless stem.
Control Tech & Dimension both offer 29.8 w/shim x 31.8
Co-Motion's is probably a re-branded Dimension.
Depending on how much length and rise you need for the stoker stem, you may also be able to use a longer (150mm) threadless stem.