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Thread: Seat Tube Reamers

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    Default Seat Tube Reamers

    Hey Folks,

    Other than Silva (a little out of my price range) or adjustable reamers, what options are there for seat tube reamers in the US?
    I have an adjustable Chadwick 27.2 reamer that I was gifted (with chips in the blades from the orig owner) and am in need of a 31.6 reamer.

    No one seems to have Cyclus in stock (I know I can get them from Ceeway).
    elysian
    Tom Tolhurst

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    Default Re: Seat Tube Reamers

    I never ream seat tubes. I mean, why? I have a bit made from 1/4” stainless tubing with a slot on the end into which some A.O. Cloth is wound up. Essentially it’s a homemade hone chucked into my drill that evens out any burrs there may be. I haven’t used my Chadwick ream (it’s a ream - the user is the reamer) in over forty years.

    I’ll find a pic of the bit and add it asap.

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    Default Re: Seat Tube Reamers

    Quote Originally Posted by false_aesthetic View Post
    Hey Folks,

    Other than Silva (a little out of my price range) or adjustable reamers, what options are there for seat tube reamers in the US?
    I have an adjustable Chadwick 27.2 reamer that I was gifted (with chips in the blades from the orig owner) and am in need of a 31.6 reamer.

    No one seems to have Cyclus in stock (I know I can get them from Ceeway).
    Contact David Richards of Chadwick and Trefethen, Inc: 603-436-2568

    I had them regrind a pair of English 1.125" and 1.25" spiral flute reams to 27.2mm and 30.9mm. I'm sure they could do a 1.25" to a 31.6mm for you. Pricing was reasonable and less expensive than Silva by a long shot. The fee for regrind was between $75-85 I believe. Price of the reams was the expensive part and they used high quality spiral flute reams.



    Last edited by fortyfour; 06-08-2021 at 04:00 PM.
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    Default Re: Seat Tube Reamers

    Thanks Kris!

    (And Garro) for pointing me in the right direction.
    elysian
    Tom Tolhurst

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    Default Re: Seat Tube Reamers

    Kris,

    I forgot to ask, by English do you mean the direction of the flutes? Left vs right spiral? I know that the spiral direction helps with through hole vs blind applications. Is there another reason to opt for left handed spirals?

    Thanks!
    elysian
    Tom Tolhurst

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    Default Re: Seat Tube Reamers

    You mentioned the Cyclus not being in stock- if they come back in I've had good luck with mine in several sizes.

    Another option is to buy shell reamers and have them ground to whatever size you need by a tool sharpening service. The long Chadwicks can be nice, though.

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