Cylindrical doo-hickey at rear dropouts on road frames?

[old_fat_and_slow]

Does anyone know who the first framemaker was that introduced theses semi-cylindrical doo-hickey's at the rear dropouts?

These thingies:

http://forums.thepaceline.net/attachment.php?attachmentid=78747&stc=1

http://forums.thepaceline.net/attachment.php?attachmentid=78749&stc=1

http://forums.thepaceline.net/attachment.php?attachmentid=76292&stc=1

(No, not the fender tabs.)

What purpose does it serve? Stiffens the rear dropouts against rotation out-of-the-plane of the rear triangles?

Just wonderin'



.

[fiamme red]

Does anyone know who the first framemaker was that introduced theses semi-cylindrical doo-hickey's at the rear dropouts?The Wright Brothers, they say.

[Lifelover]

I assume they simple provide a surface to attach the stays too.

[fiamme red]

http://forums.thepaceline.net/showthread.php?t=79294

[old_fat_and_slow]

Well that settles that ! Thanks Fiamme

[old_fat_and_slow]

The Wright Brothers, they say.


Well I think "they" be wrong. :D

I don't see no semi-cylindrical doo-hickies. (Hey where's the chainstays at?)


http://upload.wikimedia.org/wikipedia/en/3/3b/BicyclePlymouth.jpg

[troymac]

Well I think "they" be wrong. :D

I don't see no semi-cylindrical doo-hickies. (Hey where's the chainstays at?)


http://upload.wikimedia.org/wikipedia/en/3/3b/BicyclePlymouth.jpg
Is that Fixeds's bike looks like a cool ride. :hello:

[Mikej]

Usually called a Breezer style drop out, after Joe breeze, who may or may not have invented them.

[fiamme red]

Usually called a Breezer style drop out, after Joe breeze, who may or may not have invented them.He didn't invent them, but popularized them.

[Steve in SLO]

They are the single biggest reason it takes me 3x as long to seat my rear QR than it used to.

[Louis]

Not that anybody asked for my opinion, but aesthetically they are not at the top of my list of desirable dropout designs.

[old_fat_and_slow]

Not that anybody asked for my opinion, but aesthetically they are not at the top of my list of desirable dropout designs.


I concur with you Sir 1000%

[rwsaunders]

I'm wondering if they were installed because it's a travel bike? I.e. they are able to be replaced if the hanger is bent during shipping or during a ride in Timbuktu? Rugby...chime in here.

[Fixed]

did he used to work at serotta ?
cheers

[Peter P.]

The design makes it easier to attach chain and seat stays to the dropout as the continuous flange isn't fussy about placement, there's a large surface area for strength, and mitering is quick and easy.

Some brands have less of a hood over the dropouts which might ease some of the problems others have experienced. A good builder might remove any excess flange during construction.

My concern, as others have voiced, is will it fit a stationary trainer?

[dsb]

My concern, as others have voiced, is will it fit a stationary trainer?

That's what's on my Peg Marcelo and I ride it on the trainer all the time...
I'm using a 1up if that matters...