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Help cutting carbon seat tube to size.

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  • November 12, 2020 at 8:13 pm #31263
    propagandazoo

    Hello everyone. Just got a carbon 595 look frame and wondering.

    1. Can I hacksaw (or other technique) the seat tube to lower the height of the seat. See pictures below.

    2. How does one do this? Are special tools required. Do I need to expoxy the cut. Any tips appreciated.

    Thanks in advance.

    https://drive.google.com/folderview?id=1Zvsd5DL6JUCkhzCg9mtR0AIk3RkdOV_J

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Viewing 6 replies - 1 through 6 (of 6 total)
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  • November 18, 2020 at 12:46 pm #972973
    0
    Nick T

    Good work

    Good work

    November 17, 2020 at 3:57 pm #972971
    0
    propagandazoo

    I have now cut the seat tube.

    I have now cut the seat tube. Very happy with results. Slight paint-flaking on one side. But cut was accurate and straight. I have posted pictures here… 

    https://drive.google.com/drive/folders/1Zvsd5DL6JUCkhzCg9mtR0AIk3RkdOV_J?usp=sharing

    Last two photos show cut. 

    Horrible touch up paint work on seat unit was previous owner… I will do a better job on it at some point.  

    November 15, 2020 at 11:28 pm #972969
    0
    propagandazoo

    Thanks for everyones’

    Thanks for everyones’ comments. Good advice regarding using a specilaist shop or Look themselves.  I am unfortunately too poor to allow others to repair or modify my second-hand bikes. And after building a wheel from scratch, I feel that I should continue my dive into bicycle mechanics.   

    I found this video, and I ordered the tool and carbon blade. I will post result when complete.

    https://www.youtube.com/watch?v=AlUr3SCMYLM  

    I have read some horror stories about people using both the Look tool and the Park Tool offering. Happens, I think, by not using a carbon cutting saw blade… Normal blades are appartently thinner.        

    I also found an old forum post where someone even suggested using an abrasive disc chop saw  –  which I believe would work but I don’t have access to one. Will definately try on scrap frame one day… See them sometimes on Ebay and want to play…  

    November 13, 2020 at 9:41 pm #972967
    0
    AfterPeak

    Yes please use your local
    Yes please use your local bike shop. I almost messed up a steerer once. They won’t charge that much and it will be done professionally.

    November 13, 2020 at 8:23 am #972965
    0
    Nick T

    How much are you looking to

    How much are you looking to lower it? This frameset came with various size collars to adjust the saddle height by raising/lowering the stubby post, but I’m pretty sure you could cut the ISP itself. You’d require an incredibly straight and square cut to stop it looking like a bodge job however, I’d get in touch with a Look dealer and let them do it as the frame originally came with a cutting guide tool. 
     

    E Post cutting video here https://youtu.be/0VTSs3QzvnA

    November 12, 2020 at 10:03 pm #972963
    0
    jacknorell

    Find an experienced bike
    Find an experienced bike mechanic. If you don’t know how to look up how this is done you shouldn’t attempt it. Mechanic is cheaper than a replacement frame.

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