Re: [CR] Seat tube reamer

(Example: Production Builders:Tonard)

In-Reply-To: <00c401c8a8c8$2f78ca70$eb01a8c0@H10N7>
References: <00c401c8a8c8$2f78ca70$eb01a8c0@H10N7>
From: "James Valiensi" <valiensi@mac.com>
Subject: Re: [CR] Seat tube reamer
Date: Sun, 27 Apr 2008 19:45:05 -0700
To: "Scott L. Minneman" <minneman@onomy.com>
cc: classicrendezvous@bikelist.org

Hullo, The adjustable reamers are a real pain to use in a seat tube that the slot has been cut. This is because the cutter blades are parallel to the slot and they have a tendency to bind up. The reamers from Joe Bringheli and Ceeway are the spiral type and do not have this problem. I think the reaming process should be done at the frame building phase. I use an adjustable reamer, but I'll ream the seat tube before I machine the slot. Cheers! James Valiensi Northridge, CA USA On Apr 27, 2008, at 5:38 PM, Scott L. Minneman wrote:
> Or get the one with the right adjustable range from McMaster
> (www.mcmaster.com, part number 2987A37, 1" - 1.125"), which is just
> $56.93.
>
> Another possibility, if you want to have more flexibility in
> messing up all
> sorts of parts, is to buy a whole set from Harbor Freight, for the
> same
> money (probably not as good, in the grand scheme, but adequate for
> many
> occasional purposes).
>
> http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=38577
>
> One nice thing about their size ranges is that the 27.2 one is just
> barely
> into its own reamer, so that one tool can be a "set it and forget
> it" 27.2
> one (unless, dog forbid, you occasionally work on off-topic bikes (or
> something odd that has a 27.4 post)).
>
> Scott Minneman
> San Francisco, CA USA
>
> -----Original Message-----
> From: gpvb1@comcast.net [mailto:gpvb1@comcast.net]
> Sent: Sunday, April 27, 2008 2:30 PM
> To: classicrendezvous@bikelist.org
> Subject: Re: [CR] Seat tube reamer
>
> I would recommend you get the appropriately-sized adjustable one
> from Bike
> Tools Etc.
>
> http://www.biketoolsetc.com
>
> Their basic one for the typical range of vintage bikes' posts is
> $78. They
> have an HSS version for about $200, but I doubt you will need that.
>
> Once you get it set to where you want it (27.2 in this case) then
> just leave
> set to that diameter.
>
> I have one, and have used it literally hundreds of times. I just
> recently
> bought a smaller-diameter one so I can set that one at 22.2 mm for
> steerer
> tubes.
>
> And yes, do the reaming with the frame's BB shell higher than the
> seat lug,
> so the small particles (that don't stick to the reamer, use lots of
> cutting
> oil!) can fall out into a waste receptacle of your choice....
>
> Greg Parker
> Ann Arbor, Michigan
> http://www.bicycleclassics.com
>
>
> Date: Sun, 27 Apr 2008 12:21:05 -0500
> From: John Thompson <johndthompson@gmail.com>
> To: classicrendezvous@bikelist.org
> Subject: [CR] Seat tube reamer
>
> Johnsons wrote:
>
>> Purpose made seat tube reamers can be difficult to find in the
>> required sizes and if you find one they can have disastrous
>> results if
>> not used very carefully indeed.
>
> An adjustable reamer (size "I" IIRC; I'm not near my shop at the
> moment)
> works well for reaming on-topic frames.
>
>> I always push some cloth way down the seat tube first to stop metal
>> particles dropping down into the bottom bracket area. When finished I
>> turn the frame upside down to remove the cloth and the filings.
>
> Most of the frames I ream are bare, but if not I usually ream the
> tube with
> the frame held upside-down, so the particles drop out of the tube.
> But the cloth is a good idea.
>
> --
>
> -John Thompson (john@os2.dhs.org)
> Appleton WI USA
> ------------------------------
>
> Date: Sun, 27 Apr 2008 10:25:09 -0700
> From: "David Joshel" <davidjoshel@hotmail.com>
> To: "Anthony Kinder" <antct1@tpg.com.au>,
> <classicrendezvous@bikelist.org>
> Subject: Re: [CR]WTB:Seat Tube Reamer 27.2mm
>
> Hello All,
>
> for cleaning/deburring seat tubes have had good results with this
> method.
> Find a wooden dowel ( broom handle ) close in diameter to the seat
> tube.
> Tightly wrap 100 grit sandpaper around the dowel until it's just
> slightly
> smaller than the tube hole, and use it to clean the inside of the
> tube by
> moving it back and forth inside. Blow it out with canned air or
> clean with a
> damp rag to get dust/ metal particles out.
>
> Dave Joshel
> Davis CA usa
>
>
> ----- Original Message -----
> From: "Anthony Kinder" <antct1@tpg.com.au>
> To: <classicrendezvous@bikelist.org>
> Sent: Sunday, April 27, 2008 6:29 AM
> Subject: [CR]WTB:Seat Tube Reamer 27.2mm
>
>
>> Hi all,
>> Am looking for a fixed size reamer to clean out seat tubes. Generally
>> all work is on Colnago frames so needs to be 27.2mm. (I make
>> 1.07087")
>> I don't know if that is the exact size of the reamer or if it is a
>> smidge larger.
>> I had enough of standing over a frame and putting most of my 200lb
>> mass
>> onto a seatpost only to end up with a ghastly zig-zig down the
>> pole even
>> with suitable lube.
>> Help, advice and tools for sale greatly appreciated as always.
>> Anthony Kinder
>> Perth, Western Australia