Mounting B66 on modern seat post
10-01-23, 07:56 PM
#1
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Mounting B66 on modern seat post
Would this actually cause any problems in practice? I know the steel gauge is smaller on double rail than single rail, but still seems pretty sturdy.
10-01-23, 08:01 PM
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10-01-23, 08:05 PM
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10-01-23, 08:07 PM
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Yes it will cause problems, the rails will eventually bend because they are not supported. I have tried that. You have the aluminum piece (double rail adapter or whatever you call it) you need to mount between the rails, just go to the hardware store and buy 2 longer bolts and you will be all set.
Oh, sorry I just saw the piece you have is not the correct one for that double bolt seatpost. You may be able to grind some slots in it... I can't see from the picture.
You can certainly run it for a short time as is but I wouldn't want to bend the rails with the price of Brooks saddles these days!
Oh, sorry I just saw the piece you have is not the correct one for that double bolt seatpost. You may be able to grind some slots in it... I can't see from the picture.
You can certainly run it for a short time as is but I wouldn't want to bend the rails with the price of Brooks saddles these days!
Last edited by robobike316; 10-01-23 at 08:12 PM.
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10-01-23, 08:08 PM
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I don't think this has been the experience of others when ridden for any real length of time. or why would there be that adaptor we see in the photo?
Assuming that square bit of Al with the groove and hole is for sitting between the upper and lower rails why would you not use it? If you are really based in the Antarctic why would you try a failure prone set up? If you're elsewhere than please update your location. Andy (who dislikes miss information even when it's posted with good intentions)
Assuming that square bit of Al with the groove and hole is for sitting between the upper and lower rails why would you not use it? If you are really based in the Antarctic why would you try a failure prone set up? If you're elsewhere than please update your location. Andy (who dislikes miss information even when it's posted with good intentions)
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10-01-23, 08:13 PM
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10-01-23, 08:28 PM
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Alright, I ordered these from McMaster:
Not sure if they'll fit around that plate. I have a feeling by the time I'm done with this ordeal, I'll wish I had just ordered a B67.
Not sure if they'll fit around that plate. I have a feeling by the time I'm done with this ordeal, I'll wish I had just ordered a B67.
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10-02-23, 02:13 AM
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This model should fit your seatpost mounting system better, since you don't have one central bolt, but two on the sides (or, I suppose you could cut out the grooves in your existing adapter):
https://www.sjscycles.co.uk/saddles/...r-double-bolt/
Relja HackAndDrill Novović
https://www.sjscycles.co.uk/saddles/...r-double-bolt/
Relja HackAndDrill Novović
10-02-23, 07:34 AM
#10
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Looks like you are on the right path with the file work. This is why the B-67 exists (same saddle-single rail) and is probably more popular these days.
Back in the day, there were at least 2 versions of the bracket made. Breezer was one maker in the states.The center hole one that you have was made for Super Record and other single bolt seatposts such as the cheaper La Prade. There was another type that had 2 slots on the front and rear made for the 2 bolt Record type post. Every time I have used these brackets I have needed longer bolts.
Back in the day, there were at least 2 versions of the bracket made. Breezer was one maker in the states.The center hole one that you have was made for Super Record and other single bolt seatposts such as the cheaper La Prade. There was another type that had 2 slots on the front and rear made for the 2 bolt Record type post. Every time I have used these brackets I have needed longer bolts.
10-02-23, 08:25 AM
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It's definitely a pain. I bought the single bolt adapter a few years ago for a B33, but ended up going with a pilar-style seatpost for that one.
Looking at the double bolt adapter, I think even that one I'd have to cut. The front side meshes OK, but the back side I'm going to have to take an even bigger chunk out of the metal...ugh
Looking at the double bolt adapter, I think even that one I'd have to cut. The front side meshes OK, but the back side I'm going to have to take an even bigger chunk out of the metal...ugh
10-02-23, 09:48 AM
#13
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There you go, nothing a little filing couldn't fix! Hopefully there are no vertical issues and it will tighten down on both rails adequately.
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10-02-23, 09:56 AM
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I found some 50mm m5 black oxide screws at the local hardware store, so decided to try those. Got some 45mm stainless steel coming, which I think will be a better length. Just not sure which is best to use: black oxide or stainless. From reading, the black oxide/alloy steel are higher strength, but the stainless will be more corrosion resistant.
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