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BDop Offset brake pad holders

Old 11-08-21, 02:36 PM
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BDop Offset brake pad holders

Extend your brake reach by 7mm. Retail for $29.99 a pr.! I know.
See bdopcycling.com for more info'
Nicely made in like new condition. $13 shipped SOLD



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Old 11-08-21, 02:39 PM
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Originally Posted by vtchuck View Post
Extend your brake reach by 7mm. Retail for $29.99 a pr.! I know.
See bdopcycling.com for more info'
Nicely made in like new condition. $13 shipped
Dibs plz.

PM coming
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Old 11-08-21, 02:58 PM
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Done
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Old 11-08-21, 03:02 PM
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Doh!! I can always use those.
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Old 11-08-21, 03:33 PM
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Just so i understand for future ref, does this enable the use of longer pads so more braking surface, or does it provide for more caliper reach down to a smaller rim?
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Old 11-08-21, 03:54 PM
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Originally Posted by Gary12000 View Post
Just so i understand for future ref, does this enable the use of longer pads so more braking surface, or does it provide for more caliper reach down to a smaller rim?
More reach.
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Old 11-08-21, 07:30 PM
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3 minutes?!
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Old 11-08-21, 07:39 PM
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Originally Posted by droppedandlost View Post
3 minutes?!
Even a blind squirrel.....
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Old 11-09-21, 10:50 AM
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Originally Posted by droppedandlost View Post
3 minutes?!
Yeah I'm 0-4 on the last four things I could have really used
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Old 11-09-21, 11:29 AM
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Originally Posted by droppedandlost View Post
3 minutes?!
You should try buying a bike from an estate sale when @merziac wants it too! Apparently you need to be there hours before they open.
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Old 11-09-21, 11:32 AM
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Originally Posted by Andy_K View Post
You should try buying a bike from an estate sale when @merziac wants it too! Apparently you need to be there hours before they open.
Only a couple or so and there were others between us.
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Old 11-09-21, 01:58 PM
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Originally Posted by Andy_K View Post
You should try buying a bike from an estate sale when @merziac wants it too! Apparently you need to be there hours before they open.


Originally Posted by merziac View Post
Only a couple or so and there were others between us.
No early birds!
Best, Ben
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Old 11-09-21, 02:21 PM
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Originally Posted by xiaoman1 View Post




No early birds!
Best, Ben
A couple of the people in front of me got there at 4am.

Luckily they weren't there for the bike although they mentioned bikes while we were waiting so I didn't tip my hand, just in case.
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Old 11-09-21, 02:33 PM
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Originally Posted by merziac View Post
A couple of the people in front of me got there at 4am.

Luckily they weren't there for the bike although they mentioned bikes while we were waiting so I didn't tip my hand, just in case.
Going Stealth/Jedi mode......Similar to saying, No bikes in here , all the bikes are in the back shed aren't they.
Ben
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Old 11-09-21, 02:43 PM
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Originally Posted by xiaoman1 View Post
Going Stealth/Jedi mode......Similar to saying, No bikes in here , all the bikes are in the back shed aren't they.
Ben
Yep, I still managed to punk myself as I couldn't figure out how to get downstairs to the garage until I asked again once I was inside and got lost first.

Still lucked out and scored the bike but wasn't smart enough to listen to the helper that was down there when he said there was a bunch more "cool" bike stuff in the pile.

Probably could have found the brake pad holders and who knows what else.
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Old 12-20-21, 10:07 PM
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Originally Posted by Gary12000 View Post
Just so i understand for future ref, does this enable the use of longer pads so more braking surface, or does it provide for more caliper reach down to a smaller rim?
They give 7mm more reach.
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Old 12-21-21, 08:50 AM
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So this would be the solution when moving from 27 to 700 wheels?
Will they work on Cantilever brakes on a touring bike??
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Old 12-21-21, 09:34 AM
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Originally Posted by WGB View Post
So this would be the solution when moving from 27 to 700 wheels?
Will they work on Cantilever brakes on a touring bike??
They provide about 7mm additional drop. The difference in radius between 27" and 700C rims is only 4mm, so they would work in principle. But I don't see that they are offered with an unthreaded stud, which is what vintage cantilevers would need. @Bob Dopolina, is there any chance this could become an option? I know I'd be interested in a set.
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Old 12-21-21, 10:16 AM
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Originally Posted by JohnDThompson View Post
They provide about 7mm additional drop. The difference in radius between 27" and 700C rims is only 4mm, so they would work in principle. But I don't see that they are offered with an unthreaded stud, which is what vintage cantilevers would need. @Bob Dopolina, is there any chance this could become an option? I know I'd be interested in a set.
Heck, a canti-post version that only offered 4mm drop would probably go over pretty well with that crowd.
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Old 12-21-21, 10:24 AM
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Originally Posted by Bob Dopolina View Post
They give 7mm more reach.
And they work great. Of course they do, its hardly a complex setup, but its still worth confirming- they work great.
I had to order a set for my rear brake because a frame I built had the brake bridge a few mm too high(still swear I measured 10 times before brazing!) and these dropped pads saved me from having to look at cutting material from the brake arm or something similarly dumb.
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Old 12-24-21, 10:31 PM
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Originally Posted by JohnDThompson View Post
They provide about 7mm additional drop. The difference in radius between 27" and 700C rims is only 4mm, so they would work in principle. But I don't see that they are offered with an unthreaded stud, which is what vintage cantilevers would need. @Bob Dopolina, is there any chance this could become an option? I know I'd be interested in a set.
Ooof.

That would require some new tooling. And, even with our first run, we'd have to make a few hundred pairs. These are expensive to make so with tooling and stock it would be an investment.

Do you think there is actually a demand for this spec? I assume the studs are the same dia across brands? I know they were with more modern cantis but I'm out of my depth on true vintage stuff.

...thinking about it, even if we used the same bodies, we'd have to make the studs, and they then would have to be secured within the holder itself, otherwise, they would just spin around on the stud...

Would it be possible to thread part of the stud and put a locking nut on the outside of the holder between the holder itself and the canti arm? I'm not sure I would trust that. The head of the stud would also have to be secured inside the holder, which would mean a recess of some kind...that would mean the holder would be machined differently...now I am concerned about the amount of material at that point as it has to deal with all the load...

Sorry for thinking out loud here.

I would be interested in feedback as, as I said, vintage cantis are not something I am overly familiar with and I certainly don't have a set here to work with.
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Old 12-24-21, 11:29 PM
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I was just wondering as I recently picked up a Panasonic PT-4500 which has 27 inch wheels. I would like the options that a 700 wheelset offers. Perhaps once I get it stripped and rebuilt I'll test fit a wheelset and see where this goes.
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Old 12-25-21, 08:55 AM
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Originally Posted by Bob Dopolina View Post
Do you think there is actually a demand for this spec? I assume the studs are the same dia across brands? I know they were with more modern cantis but I'm out of my depth on true vintage stuff.

...thinking about it, even if we used the same bodies, we'd have to make the studs, and they then would have to be secured within the holder itself, otherwise, they would just spin around on the stud...

Would it be possible to thread part of the stud and put a locking nut on the outside of the holder between the holder itself and the canti arm? I'm not sure I would trust that. The head of the stud would also have to be secured inside the holder, which would mean a recess of some kind...that would mean the holder would be machined differently...now I am concerned about the amount of material at that point as it has to deal with all the load...

Sorry for thinking out loud here.

I would be interested in feedback as, as I said, vintage cantis are not something I am overly familiar with and I certainly don't have a set here to work with.
The threaded stud on brake pad holders is 6mm diameter. The unthreaded stud on vintage cantilever pad holders (i.e. MAFAC, Shimano, Dia-Compe, etc.) is 7mm diameter. I wonder if one might epoxy a sleeve over the 6mm threaded stud to convert it to an unthreaded stud?
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Old 12-25-21, 11:32 AM
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How long have these been around? (These or other models/brands that do the same thing.) This is such a duh! solution to a problem that has been around since 700c and 27" were invented. And how did I not know or think of this before? (Well, part of that is getting introduced to Mafac Racers 54 years ago - the brake with serious reach.)
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Old 12-25-21, 11:43 AM
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Regarding cantis and studs - I've only used vintage. Mafac both cantis and Racers and a roughly 1983 Shimano canti (stock on a Miyata 610) that is a copy geometry-wise of the Mafac and a really good brake!). Every post pad/shoe I've ever bought has fit and worked just fine save a few that were too long for that bike and interfered with forks/stays. Never saw a post that didn't work. I think a run of (say) Koolstop standard posts should work fine for everybody.
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