cutting 5 mm off a carbon seat post?

[02GF74]

How would one cut 5 mm off a carbon fibre seat post so it is nice and square and not muller the finish?

A pipe cutter would be ideal but that would mark the post, not that it would really matter since the post would be inside the frame.

Other way would be to use one of these saw guide things, not as neat perhaps.

(and no, it is not to save weight but my full sus. bike frame has lug inside the seat tube to prevent seat post gouging into the rear tyre).

... and it makes me wonder if I have shrunk as this frame, not ridden by me for about 5 years used to fit perfectly, or maybe it was set too high ....

 

[bonj2]

use a good hacksaw with a new 32tpi blade and wrap masking tape round it. (Wear goggles/inhalation mask but you probably know that).
I've done it with a saw guide before, on a steerer tube admittedly, but should still fit round a seat post shouldn't it? Why would that not be as neat? I'd be tempted to say use a file to chamfer the cut edge to make it nice and neat (as i've done to great neatness on an alloy seat post before) but somebody may pipe up with a reason why it's not a good idea with carbon, however i can't how that would be a problem myself.

 

[very-near]

I'd use a chop saw with a fine blade

 

[mickle]

Chop saw?

 

[spence]

From the Easton site http://www.eastonbike.com/downloadable_files_unprotected/r&d_files/R&D-05-Carbon.pdf

 

[montage]

meat cleaver - shut your eyes and hope!


Or what Bonj said

 

[yenrod]

>cutting 5 mm off a carbon seat post

nOT WORTH IT !

 

[very-near]

Chop saw?

 

[TheDoctor]

What Bonj said. Don't use a pipe cutter - you'll delaminate the carbon!

Is it possible to twaek the rear suspension to make it sag by 5 mm?

 

[Dave5N]

A v fine tooth hacksaw if you have a straight arm will be fine. Support the tube so it doesn't stress.

 

[alecstilleyedye]

>cutting 5 mm off a carbon seat post

nOT WORTH IT !

+1

 

[02GF74]

+1

you're wrong. the seat is too high, well at least compared to other bikes. I have not ridden this one for some time and when I started, my legs felt far too extended hence the need to lower the saddle.

as explained in very first post, I cannot do this since there is a lug inside the seat tube to prevent the post dropping into the suspension (I said wheel and was wrong ok?).

I am reluctant to cut the post and thought that another option would be to find a lower saddle, it you know what I mean.

 

[rustychisel]

wrap in masking tape, use an old stem clamped on as a cutting guide.

 

[yenrod]

you're wrong. the seat is too high, well at least compared to other bikes. I have not ridden this one for some time and when I started, my legs felt far too extended hence the need to lower the saddle.

as explained in very first post, I cannot do this since there is a lug inside the seat tube to prevent the post dropping into the suspension (I said wheel and was wrong ok?).

I am reluctant to cut the post and thought that another option would be to find a lower saddle, it you know what I mean.

Cant you just put stacks on your shoes

 

[yenrod]

THIS IS WHAT YOU NEED TO DO = CUT THE SEATPOST WITH IT STILL IN THE FRAME

And never take it out.