tmnguuyen 

But if you did, check out that seat post pinch bolt. Do you who where was it used,. Kinda cool, i think i'll use it on the Raleigh International i'm going to build.

Thanks

Dylansbob 

Offset that far means your wrench shouldn't mar the paint at least.

billytwosheds 

I'd just worry about belt loops, straps, etc getting hung up. Save the paint!

tiger1964 

+1, shouldn't all seat post bolts have that feature? That said, needs to go to the chrome shop first.

xiaoman1 

Seems over kill but makes removal by a thief a snap.
Best, Ben

smd4

Do we even know that bolt is actually for a bike? I'd toss it myself.

ETA: Just saw merziac's post below. I'd still toss it.

merziac

Oldschool cool, Schwinn and many others had this kind of nut on the binder, likely it facilitated quick adjustments on the fly.

nlerner

For those already with a wrench in their hands, I suppose. That's why QR seat-binder bolts were invented.

pastorbobnlnh 

Yet look how eloquently the curve in the nut compliments the curvature of the seat stay. I'd keep it just for the aesthetic value.

RB1-luvr

would make for a nice smooth spot for the rear brake cable housing to bend over. Maybe?

tmnguuyen 

I like the way it looks too. Here it is naked. Google didn't come up with a search for this. Must not be that common.

Drillium Dude 

I like it

And yeah, it would look fantastic if it were chromed.

DD

tmnguuyen 

Good idea, i'll keep that in mind when i route the cable on the Raleigh.

79pmooney

I went into the nearest branch of Portland's biggest local bike chain; Trek dealers from very early on, to get one of those bolts. Not that nut but just the old fashioned seatpin with tab for my Mooney with its seatpin hung brake cable hanger. Mechanic didn't even know what I was talking about! Store's gone from being a Trek, Specialized and a few other brands dealer and good bike store with good mechanics to Trek concept store. A place that has nothing for my Mooney or '83 Trek except basic consumables. Big building. They own it (former bank). That branch was far from new when I moved here 24 years ago. Storage space for a whole lot of small parts.

So the Mooney's wearing a nice SS Ace Hardware bolt and nut. Looks good, works well but I'd take the OP's with its tab so holding the hanger in alignment as I tighten the nut would be easier any day. (Mooney came with a Campy pin. Using the hanger with it was a a fight and ultimately killed that pin and disabled the next. My ancient UO-8 died, I took that pin and put it on my custom Mooney! Big step up! Well, this summer I retired that pin. 60k miles on a pin from an $80 bike. One tired piece of steel. (And very ordinary, very mild steel at that.) Think I got my money's worth.

obrentharris 

Allegro used those.


I'll bet @juvela could provide some historical perspective for us.
Brent

clubman 

These were popular on ~ wartime CCM roadsters (heavy) Hence, their scarcity. I think they were designed to give some wrench clearance from the heavy sprung saddles back in the day.

Props to anyone who can identify the obscure bike-specific part attached to said bolt. Heck, there may be a prize!

bulgie 

I agree with obrentharris , they're from Swiss bikes. Vague memory, don't quote me on that...
I have two of them for some reason.



The third one is probably Japanese. Similar function but not nearly as swoopy. Chromed though.
Why would you put that extra useless raised ridge in the middle of the spacer part? Makes it look like a "washer stack" where you didn't even match up the sizes of the washers. Aesthetic malpractice!

Oh here's another Allegro with one, owner says it's a '63.



Mark B

tiger1964 

Until you paint the recesses to match the frame's paint, and make it look intended...

Fredo76

Now I know why seat lug bolt tabs often have slotted holes...

juvela

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two makers for binders of this pattern were Way-Assauto and NiKrom

the latter was stocked by Ron Kitching in his Everything Cycling handbooks, shown as late as 1970 edition



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