Seatpost binder...

[ultraman6970]

Ok, just trying to find the right part, right now is functional but anyways :P

Seatpost binder lug, it is recessed in both sides, right now there is an allen SS (who knows the size but the thread is the same than brake calipers axle) at the oposite side there is like a cone like nut, has the same shape than a nut remember seeing in canti brakes. It works but just curious what could fit in there perfectly. I found in my can of lose screws a shorter like coned allen nut that works maybe better because is smaller (now need to trim the bolt, or get a shorter one).

Trying to find the right piece because to tight this thing need to use two allen wrenches. Was thnking in using paint and get the cone nut more like pressurized inside of the lug, it might work but again, just wonder if something was made to fit those lugs.

A regular campy or sugino binder doesnt fit in the recessed hole at all, I could leave them outside flush but I believe the get too short makiing them useless...

Any ideas?

Thanks.

[cadence90]

They say that "a photograph is worth a thousand words."
I say that "a photograph is definitely worth however the hell many words ultraman6970 wrote above...and much, much more."

:)


Toronto Cycles (http://www.torontocycles.com/Selling/Seatpost_Clamps.html) and a few other stores are excellent sources for these sorts of things, but in order to help we need to have the basic dimensions (bolt hole diameter, lug recessed flange (head) diameter, and closed gap length from recessed flange face to recessed flange face) from you first, as TC provide for their binder bolts for instance:

Allen Key: 5mm.
Shaft Diameter: 8mm.
Head Diameter.11.8mm.
Internal Threads: 6mm.
Thread Length: 10mm.
Washer Thickness: 1.5mm.
Gap, closed: 19mm (17.5mm with washer).

http://www.torontocycles.com/sitebuilder/images/Titanium_Seat_Post_Binder_Bolts-328x205.jpg
.

[Pierre]

I agree, a picture would be helpful however I think what you were seeing on the opposite side is the bolt protruding into the Allen insert. You should only need one Allen key as usually the other end has a grip on the inside face of the head of the bolt so that as pressure is exerted on the other side the opposite grips

[ultraman6970]

Ok lets see.... this is what normally steel bikes have... the ears with the hole and notch (i think is called)....


http://www.cycle-frames.com/bicycle-frame-tubing/images/P/201208.jpg


But this one is like this... but at both sides...

http://www.cycle-frames.com/bicycle-frame-tubing/images/P/LSH_BIND_286R_IC-06.jpg


Serotta have some bikes with a similar lug like the one in the picture, is an M6 (i believe) and the other side is threaded, in my case the hole at both sides you can fit an M6. So right now I have a M6 bolt and M6 nut at the other side.

The thing is that pretty much you need 2 wrenches to tight that good unless i can find like a short M6 knurled M6 nut?

I tried with the usual seatpost binder bolt sugino and campagnolo and they dont fit because the head is larger than a M6 head and eventhought I could use it like that, the length of the bolt is too short because the head is hanging out of the lug because doesnt fit in the hole. The head of a campagnolo seatpost binder is larger in diameter than a M6 bolt.

Right now one side has a SS (i think) M6 bolt in one side and the other side has a M6 nut which finally figure it out is the nut of a canti lever brake pad....

http://chainreactioncycles.scene7.com/is/image/ChainReactionCycles/prod35461_IMGSET?wid=500&hei=505

It works but have to use two wrenches to tight that thing very well, thats why I was wondering if there is a specifically designed seatpost binder bolt for this type of lug??? Wonder if there is a M6 knurled round nut that can fit in there, the finish would be super clean because the brake pad nut I have is kind'a long (I found another one that is shorter in my jar of metals)

Hope this explains it better.