Broken seat post binder bolt
Ladies and Gents, I was not paying attention as I should and not using my torque wrench and I overtightened my seatpost binder bolt on my Torelli Nitro Express steel framed bike. The part that did not break off into my hand is still on the bike and I’m not quite sure how to get it out. Suggestions would be helpful. Photos below of sheared bolt headband the area in question. Thank you.
https://cimg3.ibsrv.net/gimg/bikefor...6e0cad2ae.jpeg Nut end and partial bolt still stuck on bike https://cimg4.ibsrv.net/gimg/bikefor...a94e4d9cb.jpeg Rear view of area https://cimg6.ibsrv.net/gimg/bikefor...68f5f294c.jpeg Rear view of area again https://cimg9.ibsrv.net/gimg/bikefor...40fdc3cbd.jpeg Sheared off bolt head and partial bolt that snapped off into my hand |
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...it should tap right out with a pin punch of the proper size and a small hammer. This is a pin punch. https://cimg0.ibsrv.net/gimg/bikefor...b496932b6d.jpg |
The first thing I would do is see if needle nose pliers can fit in the gap, maybe even forceps, to see how easy it is turn the remainder of the bolt. If it easily moves see if you can back it out.
You might be able to drill a hole to thread a screw, from the opposite side, and the drill itself might turn the bolt and remove it. If not, put a screw in the hole and back it out. John |
Although you could use a punch to extract the nut with the bolt stub still in it, I would first try to extract the broken bolt stub with the nut still in place.
It's a small diameter bolt, so drilling and using an extractor would be tough. Question is... how tight is the remaining bolt? I broke a bolt and was able to manipulate the remaining stub with a pin to remove it. Too tight for a pin? Can you Dremel a divot in the bolt in order to get a grip? All the best Barry |
Thank you
Thank you ! The pin punch actually worked like a charm on the second whack. Next question. Where can I get another of these ? Are they a standard size ? Any suggestions ? Thanks in advance
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Is THIS what you are looking for?
I'd call them and use words like"Desperate" and "Pretty Please" in sentences. or Start through their dealer listing Barry . |
Yes. Looks like the one. Already emailed them about locating one as their website says out of stock. I may need to find an equivalent. But I don’t know if they’re standard diameter, length, etc...
Thanks for the heads up |
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Originally Posted by jonthebiker
(Post 21564439)
Thank you ! The pin punch actually worked like a charm on the second whack. Next question. Where can I get another of these ? Are they a standard size ? Any suggestions ? Thanks in advance
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You can do a field expedient repair with any bolt which is long enough and which fits the hole, along with a nut and a couple of washers. It will get you going until you can source the proper items.
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Originally Posted by dsbrantjr
(Post 21565122)
You can do a field expedient repair with any bolt which is long enough and which fits the hole, along with a nut and a couple of washers. It will get you going until you can source the proper items.
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