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Front derailleur clamp band adapter question.

Old 04-18-21, 04:31 PM
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Jockie
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Front derailleur clamp band adapter question.

Is there any reason why Shimano's SM-AD67-L (34.9mm) clamp band adapter would not be compatible with a Shimano's Ultegra FD-6700 direct mount front derailleur?

The SM-AD67 is promoted to be used with Shimano's Ultegra FD-6800 direct mount front derailleurs. From what I've read, this clamp band adapter accommodates the support bolt and plate of the newer derailleurs. Does anyone have knowledge or experience of this adapter's backward compatibility with an older direct mount derailleur - particularly an FD-6700?
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Old 04-18-21, 07:31 PM
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It'll work. They're not 'direct mount', they're referred to as 'braze-on'.
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Old 04-18-21, 08:17 PM
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Thank you "cxwrench".
I appears that there is such a thing as a direct mount front derailleur but as "cxwrench" correctly pointed out, what I am referring to is a 'braze-on' front derailleur.
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Old 04-18-21, 08:30 PM
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CF frames tend to use direct mount. Steel & Titanium can use braze. Aluminum would more likely use a clamp.
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Old 04-18-21, 08:45 PM
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Originally Posted by Troul View Post
CF frames tend to use direct mount. Steel & Titanium can use braze. Aluminum would more likely use a clamp.
Same. Damn. Thing. Frame material does not matter, you can find frames of all materials that use both.
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Old 04-19-21, 04:58 AM
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Originally Posted by cxwrench View Post
Same. Damn. Thing. Frame material does not matter, you can find frames of all materials that use both.
Brazing an item is joining together [fusing] metal by melting & flowing a filler metal into the joint. Direct mount using hardware to affix the part to its component.
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Old 04-19-21, 08:09 AM
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Originally Posted by cxwrench View Post
It'll work. They're not 'direct mount', they're referred to as 'braze-on'.
Since you like to get hyper-technical about this stuff, they are incorrectly referred to as “braze-on”. Whether or not the mount is “brazed on” would depend on the material. Steel could be have the mount brazed onto the frame. Aluminum and titanium and some steel frames are going to welded. Carbon is going to have the mount glued or riveted in place.

And, if the mount is a clamp, it’s not “brazed” in place.

Frankly, “direct mount” is a better description for the mounting than “braze-on”, considering the relatively few frames that will actually use a brazing technique to attach the mount to the frame.
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Old 04-19-21, 08:27 AM
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Old 04-19-21, 10:26 AM
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Originally Posted by Troul View Post
Brazing an item is joining together [fusing] metal by melting & flowing a filler metal into the joint. Direct mount using hardware to affix the part to its component.
The front derailleur that attaches to this type of mount has always been called a 'braze-on' front derailleur and the one w/ the built in clamp...well, you can figure that out.
Doesn't matter what material the frame is made with and whether the mount is actually brazed on, riveted on, or bonded. It's called a braze-on.

Originally Posted by cyccommute View Post
Since you like to get hyper-technical about this stuff, they are incorrectly referred to as “braze-on”. Whether or not the mount is “brazed on” would depend on the material. Steel could be have the mount brazed onto the frame. Aluminum and titanium and some steel frames are going to welded. Carbon is going to have the mount glued or riveted in place.

And, if the mount is a clamp, it’s not “brazed” in place.

Frankly, “direct mount” is a better description for the mounting than “braze-on”, considering the relatively few frames that will actually use a brazing technique to attach the mount to the frame.
'Direct mount' refers to a mountain bike derailleur that was the last mounting style before everyone decided that 1X was the way to go. Google direct mount front derailleur
Then Google braze on front derailleur
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Old 04-19-21, 11:02 AM
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No matter what the FD requires for installing on to the seat tube, it will always require a certain mounting style for it to be held in place on the seat tube. As long as the need is known & achieved, the terminology is a YMMV.
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Old 04-19-21, 11:11 AM
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True, but if you go into a bike shop and ask for a front derailleur for a braze on mount they'll immediately know what you need. Same if you ask for a direct mount front derailleur, they'll know it's for a mtb. I'm not making this up, it's always been this way. The industry sets the standard for terminology in cases like this, not what some random guy thinks it should be called.
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Old 04-19-21, 12:50 PM
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Yeah, as a long term amateur, I've never heard any other terms but braze on for that type of road FDs. Shops, riders, mechanics, websites, what have you use that term and no other that I've seen. It's the proper and universally accepted and understood term, period.

As a maybe interesting aside, is it becoming more uncommon to see clamp on FDs with various clamp diameter options? Seems like they're defaulting to braze on derailleurs and clamp adapters of various sizes.
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Old 04-19-21, 01:24 PM
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Originally Posted by cxwrench View Post
True, but if you go into a bike shop and ask for a front derailleur for a braze on mount they'll immediately know what you need. Same if you ask for a direct mount front derailleur, they'll know it's for a mtb. I'm not making this up, it's always been this way. The industry sets the standard for terminology in cases like this, not what some random guy thinks it should be called.
Yes. But if you walk into the same shop and ask them about “chain stretch”, they will immediately know what you are talking about. If you walked into a shop and asked “brifters”, they will know what you are talking about. Jockey wheels aren’t “pulleys” but they will also know what you are talking about.

My post was more about yanking your chain about your need for hyper-accuracy about bicycle terms.
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Old 04-19-21, 01:49 PM
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if a random female calls it the dookickey that goes with "it" , the shop will also likely know what to do.

The sky isn't a cold color today, but it's grey.
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Old 04-19-21, 03:21 PM
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Yup. This is the bike world. Where a thread-on steel block with a freewheel mechanism inside is a "freewheel" but that term no longer applies if you put the freewheel mechanism inside the hub. (If then becomes a "cassette" hub. If you call it a "freewheel hub" you will be corrected even if you are differentiating it from a fix gear hub.)

Good thing is that my ti bike has no FD mount so it has to run clamped and cannot be saddled with braze-ons. (Also good in that being a 31.8 OD seattube. I could use an asymmetrical shim, a 34.0 (I think that is right) clamp and bring the FD further inboard to achieve good shifting with a triple using a crankset setup to a low Q-factor.
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Old 04-19-21, 03:34 PM
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For a second there I started wondering if they'd started making direct mount front derailleurs for road bikes.
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Old 04-19-21, 05:25 PM
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Originally Posted by Troul View Post
if a random female calls it the dookickey that goes with "it" , the shop will also likely know what to do.

The sky isn't a cold color today, but it's grey.
Let’s not be sexist, okay? I’ve had numerous XY chromosome individuals at my local co-op who are clueless about the various doohickeys on a bicycle. I’ve also worked with numerous XX chromosome volunteers and paid mechanics who know what all the various doohickeys on a bicycle are called and can help any one find the proper part. Some even go so far as teaching other people how to fix their bikes.
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Old 04-19-21, 05:29 PM
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Lets not assume it was directed at a LBS business. Could be a dress shop for males. Don't read beyond the point to make yourself overly sensitive.
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Old 04-20-21, 09:11 AM
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Originally Posted by Troul View Post
Lets not assume it was directed at a LBS business. Could be a dress shop for males. Don't read beyond the point to make yourself overly sensitive.
Then why not say “a random person”? Don’t post in a manner that can be interpreted as being sexist. I read nothing into your post other than what you put there.
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Old 04-20-21, 09:24 AM
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...so are "whatsit", "thingamabob", and "thingy" also to be considered unacceptable ? This is where I come to learn this stuff.
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Old 04-20-21, 09:40 AM
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Not absolutely sure but I think 'dimdogger' might be ok.
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Old 04-20-21, 04:38 PM
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Simply not reading my post, not responding to my post is just as effective as not assuming. Do not direct my way of language because you are not willing to accept a different culture.
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Old 04-20-21, 04:46 PM
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Originally Posted by Troul View Post
Simply not reading my post, not responding to my post is just as effective as not assuming.
I read your post. Your meaning is quite clear. Like I said, if you have used “random person”, there would have been no problem. Saying “random female” says something else entirely.

Do not direct my way of language because you are not willing to accept a different culture.
Odd, this isn’t in your post as it appears on the page when I quoted it. But, frankly, I don’t care what “culture” you come from. Denigrating people because they are female is wrong.
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Old 04-20-21, 04:55 PM
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you're choosing to interpret my words with how they align to your feelings. I have no problem in you doing so as long as you do not infringe to my harmless intent. Do take me the wrong way, I'll still waive at ya when out riding.
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Old 04-20-21, 05:29 PM
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Originally Posted by Troul View Post
you're choosing to interpret my words with how they align to your feelings. I have no problem in you doing so as long as you do not infringe to my harmless intent. Do take me the wrong way, I'll still waive at ya when out riding.
I’m not “interpreting” your words. You posted those exact words and the context is quite clear. If you think your intent is harmless, you are deluding yourself.

Here’s a test: read your exact words to any given female in your life and see how they feel about your “harmless intent”.
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