Using a seatpost shim

mikeyj28

I have a carbon seatpost 27.2 mm that I love. It's too small or my anthem but I'd still like to use it with a shim if possible?
1: would the seatpost keep slipping under load?
2: if I move from back to front on the seat will the post slip or move about?
3: are seatposts more prone to breaking in a shim?

I'd rather not buy a new carbon post if I can hlp it.

Thanks

warpcow

It shouldn't slip and it shouldn't break either. Try to get as long a shim as possible though. This is more to protect the frame than the post, but it's still not much of an issue.

nicklouse

it is advisable to use a shim with a carbon post as it reduces the chances of damaging it.

.blitz

mikeyj28 wrote:

I have a carbon seatpost 27.2 mm that I love. It's too small or my anthem but I'd still like to use it with a shim if possible?

I used an inexpensive Brand-X shim with a Race face carbon post and it worked fine.

It only lasted a few rides though the 27.2 sp looked all wrong in a 31.6 frame.