Carbon seat pin question

tintin40 · Jun 7, 2009

I have decided to stop riding my 17'' frame as it's too small. So is it ok to cut down my 350 long seat pin down to 270? And can I then cut a 5mm piece of the left overs to use as a stem spacer? Oh it a newish USE Alien post.
P.S.
I wont be selling my 17'' Trimble

P.S.
Using a normal hack saw. (new Blade)

Xesh · Jun 7, 2009

I don't see a problem with that. I've cut down carbon bars before with no serious problems.

If you do cut it make sure that you're wearing a dust mask as the dust from cutting carbon has an effect on the lungs similar to asbestos!

tintin40 · Jun 8, 2009

Thanks Xesh

kaiser · Jun 8, 2009

Also use a very fine blade, 32 tpi is ideal.

icantthinkofausername · Jun 8, 2009

Cutting through masking tape helps to reduce the splintering.

obscurasky · Jun 8, 2009

Xesh":1u83eic3 said:
I don't see a problem with that. I've cut down carbon bars before with no serious problems.

Unless it's just a tad, I'm not sure cutting down carbon bars is such a good idea as the carbon is thicker in areas that require extra strength - like under the gear/brake clamps.

Xesh · Jun 8, 2009

obscurasky":jheqxmq7 said:
Unless it's just a tad, I'm not sure cutting down carbon bars is such a good idea as the carbon is thicker in areas that require extra strength - like under the gear/brake clamps.

These were Barflex bars from the early '90s. They didn't have re-enforcements then. They were filled with foam however. I cut about 2" off each side making them 17" overall.

stevet1 · Jun 8, 2009

I imagine it will be hella difficult even with a saw guide to cut a stem spacer that is square enough even if its the right diameter.

Carbon seat pin question

tintin40

Xesh

Senior Retro Guru

tintin40

kaiser

icantthinkofausername

Senior Retro Guru

obscurasky

Retro Newbie

Xesh

Senior Retro Guru

stevet1

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