Thickness of Dura Ace FD clamp band

[cyan]

For those who have a Shimano DA 9150 FD clamp band (https://bike.shimano.com/en-EU/produ...SM-AD91-L.html) around for a quick measurement, how thick is it the band that attaches to the seat tube?

Need it to figure out how much space there will be between ST and tire on an incoming frame. Thanks.

[robt57]

Just get a Parlee one. . Got a 28mm tire on a few bikes using them.

[cyan]

Originally Posted by robt57

Just get a Parlee one. . Got a 28mm tire on a few bikes using them.

Yeah, I had that, but it's not as stiff as metal ones...

[oldpotatoe]

Don't know about the shimano one but this one or a FSA one is certainly thinner than the shimano one.

https://www.ebay.com/itm/352559622034

[Velocipede]

Originally Posted by cyan

For those who have a Shimano DA 9150 FD clamp band (https://bike.shimano.com/en-EU/produ...SM-AD91-L.html) around for a quick measurement, how thick is it the band that attaches to the seat tube?

Need it to figure out how much space there will be between ST and tire on an incoming frame. Thanks.

Just measured one I have in the drawer

2.32mm thick.

[fredd]

Originally Posted by cyan

Yeah, I had that, but it's not as stiff as metal ones...

Did that result in poorer shifting or anything of the like?

Asking as I’m in a similar situation.

[duff_duffy]

I had Parlee one used with Ultegra 10 speed on steel frame. Worked fine for me in this setup for what it’s worth. Was not ridden hard though, more of weekend cruiser but never had any issues.

Originally Posted by fredd

Did that result in poorer shifting or anything of the like?

Asking as I’m in a similar situation.

[Tyler Evans]

Although still in prototype stage (and on the back burner to some larger projects), we think there will be some serious interest in something like this once we bring it to market. Front is aluminum, rear is titanium.

1.4mm thick titanium band in the rear with the threaded portion offset tangent to the rear of the ST for maximum tire clearance.

The FD cradle is placed as forward and outboard as the tolerances allow to maintain proper shifting as well as max clearance.

What do you guys think? Should we move forward?

*** did I mention how ridiculously stiff it is?

[duff_duffy]

I like it…perhaps send me one for real world testing. I will report back on how it functions why not make entire thing titanium? I’ve seen some old aluminum bits oxidize over time and/or just be different color than titanium - probably not huge deal but for what I’d guess it will cost might be an issue for some.

Originally Posted by Tyler Evans

Although still in prototype stage (and on the back burner to some larger projects), we think there will be some serious interest in something like this once we bring it to market. Front is aluminum, rear is titanium.

1.4mm thick titanium band in the rear with the threaded portion offset tangent to the rear of the ST for maximum tire clearance.

The FD cradle is placed as forward and outboard as the tolerances allow to maintain proper shifting as well as max clearance.

What do you guys think? Should we move forward?

*** did I mention how ridiculously stiff it is?

[Tyler Evans]

Originally Posted by duff_duffy

why not make entire thing titanium? I’ve seen some old aluminum bits oxidize over time and/or just be different color than titanium - probably not huge deal but for what I’d guess it will cost might be an issue for some.

The plan is to hard anodize the Aluminum part so that will not be an issue. The same process that we do on the faceplates of our stems.

Using Aluminum for the front part makes for a stiffer and lighter clamp overall. The titanium is used on the back so that we can get the it as thin as possible to get max tire clearance. Thinness doesn't matter on the front part of the clamp.

[12snap]

Originally Posted by fredd

Did that result in poorer shifting or anything of the like?

Asking as I’m in a similar situation.

The Parlee was definitely the thinnest one I could find. It worked great for me. Never had any issues with it being too flexy.

[fredd]

Just saw the price of the Parlee one. Ouch...
Anybody have experience with the cheap ebay carbon clamps?

[Duvivr6]

Firefly option looks great.

I am currently battling this same problem on my frame with D/A di2. Used the shimano clamp and a replacement clamp that was posted here neither really help with extra clearance.

Just ordered a Parlee style from ebay Omni branded will report back here if it works.

[Duvivr6]

Originally Posted by Tyler Evans

The plan is to hard anodize the Aluminum part so that will not be an issue. The same process that we do on the faceplates of our stems.

Using Aluminum for the front part makes for a stiffer and lighter clamp overall. The titanium is used on the back so that we can get the it as thin as possible to get max tire clearance. Thinness doesn't matter on the front part of the clamp.

Tyler anyway a design can be made to swivel where your current bolt is and just bolt on with the derailleur?

[oldpotatoe]

Originally Posted by Tyler Evans

Although still in prototype stage (and on the back burner to some larger projects), we think there will be some serious interest in something like this once we bring it to market. Front is aluminum, rear is titanium.

1.4mm thick titanium band in the rear with the threaded portion offset tangent to the rear of the ST for maximum tire clearance.

The FD cradle is placed as forward and outboard as the tolerances allow to maintain proper shifting as well as max clearance.

What do you guys think? Should we move forward?

*** did I mention how ridiculously stiff it is?

Why not make it all titanium?

Ahh.....asked and answered above..