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Old 08-16-07, 09:22 PM   #1
bhoover
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Seat posts for Brooks double rail saddle

Hi,

I bought a used Brooks b72 double rail saddle that only accepts a 7/8 inch/22.2 mm seat post and the seat post tube on my frame is for 30mm seat posts. Is there any way that i can make this work without having to hire a machinist to make a custom shim or seatpost to fit? I would greatly appreciate any suggestions.

thanks,

billy
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Old 08-16-07, 10:02 PM   #2
cooker
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If you get a 30 mm seat post with a built in clamp you can attach a double rail seat using a "seat sandwich".

http://www.wallbike.com/clampvssand.html
http://www.wallbike.com/brooks/parts....html#sandwich

It appears to be a plate that fits between the rails and between the upper and lower parts of the integrated clamp on newer seat posts. It comes with a longer bolt. Don't know if they have a version for two-bolt clamps.

Or you could try to buy a straight pipe seat post that has the usual narrow 7/8" section at the top and the rest is 30mm, but I couldn't find one in a series of searches.
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Old 08-18-07, 10:16 AM   #3
Grand Bois
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Beeezer seat sandwich, SR Laprade post and B18 saddle. The seat sandwich will only work with a singlr-bolt post. It works very well, but it's expensive.

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