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Old 08-08-10, 12:51 AM   #1
andy.c
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Braze-on on headset spacer

I have a long steering tube, and a lot of space taken up by headset spacers.

My downtube shifters are a little too far down for me, so I'm thinking it would be cool to mount them on the steering tube.

I found this pic of just what I want: http://www.m-gineering.nl/vwijk8.jpg (it's not a headset spacer but it's where they would be; it's from this page: http://www.m-gineering.nl/m-ginpicg.htm

Does anyone know anyone who makes something like this? I'm in San Francisco, so if no one sells it, then recommendations on SF bike shops/mechanics would be appreciated.

Or how hard would it be to make something like this myself? What tools what I need? It would also be cool to make some other mounts, like for a light, or for a GPS. I am so sick of the cheap plastic mounts that come with all this stuff.

I bought a metal clamp on EBay, but not sure if it will work. I feel like a metal part would be more robust.
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Old 08-08-10, 02:52 AM   #2
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Or how hard would it be to make something like this myself? What tools what I need?
Absolute piece of piss - you'll need a hacksaw and a file.

Go figure... ; )
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Old 08-08-10, 02:59 AM   #3
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Just ask a local framebuilder to throw one together for you. If you were in BC, I'd recommend this guy.
A section of one-size-up steerer tube + 1 pinch bolt boss + 2 shifter bosses + 2 splitstops = what you're looking for. A lathe, an oxy-acetylene brazing setup, and a milling machine with a slot saw installed should do the trick. You could get it unfinished, then take it to a powder coater yourself to ask them to include it in their next run of black or whatever. Just make sure you mask off the shift bosses, pinch boss threads, and inside surface of the clamp first.

Last edited by Torchy McFlux; 08-08-10 at 03:15 AM.
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Old 08-08-10, 03:08 AM   #4
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I guess the bearing preload doesn't make enough friction to get away without the pinch bolt, eh?


...Oh yeah, I forgot about cable stops too.
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Old 08-08-10, 03:12 AM   #5
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I'd expect it to rotate, yeah. All that pushing and pulling on the levers.
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Old 08-08-10, 03:16 AM   #6
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My answer to many such problems in life
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Old 08-08-10, 03:18 AM   #7
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Old 08-08-10, 08:45 AM   #8
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gripshift fans do not dispair, there is a steerer shifting adaptor for you too.

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Old 08-08-10, 09:23 AM   #9
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Bianchigirll - can you tell me the make and model name of that mount, please? The photo shows it mounted to a threaded headset, but if it can be mounted as a spacer in a threadless headset then I could think of many uses for it, because it is a clean way to add additional handlebar mounting space that could be used for many things (handlebar bag mounts, lights, etc.).
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Old 08-08-10, 10:20 AM   #10
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Quite a bit OT since it doesn't address your original question but, if your intent is to get the shifters in a more accessible location without going to the expense of brifters, here is another possible method.

Kelly Take-offs are brackets that go onto drop handlebars right under the brake levers and act as mounts for standard downtube shifters. They provide nearly as much convenience as brifters without the expense. Here is their web site:

http://kellybike.com/2nd_xtra_takeoff.html
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Old 08-08-10, 12:35 PM   #11
andy.c
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Mr McFlux, thanks that sounds reasonable. So is it a lot easier to do in steel than aluminum? I say that because if it's aluminum I might not have to go through the bother of painting it.

Bianchigirl -- actually that is another part I wanted. That would be good for a bike with an internal hub. Who made that?

I've seen the Kelly Take-offs too (and Paul's thumbies), although my purpose now is to be able to switch handlebars without touching the shifters... hence the
stem shifters.

Thanks for the help!
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Old 08-08-10, 09:08 PM   #12
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#8 looks like a shop fabrication, brazed together then painted/ powdercoated. to fit on the grip shifter the cross bar is 7/8''..

for as stem shifter you need 2 down tube braze ons , a couple housing stops , and a pinch bolt, brazed on a section of steel tube
also would be pretty simple .. frame builder could make something up in a couple hours

Call Bernie Mikkelsen in Oakland, would be one place to try.. http://www.mikkelsenframes.com/
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Old 08-09-10, 05:44 PM   #13
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Originally Posted by andy.c View Post
Mr McFlux, thanks that sounds reasonable. So is it a lot easier to do in steel than aluminum? I say that because if it's aluminum I might not have to go through the bother of painting it.
Shifter bosses are made of steel, so the whole thing may as well be.
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Old 08-09-10, 10:17 PM   #14
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Bianchigirl -- actually that is another part I wanted. That would be good for a bike with an internal hub. Who made that?
Did you even look at the photos on the M-engineering page that you linked? its half way down on that page.
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