Old Yeller

Am I missing something here? What is wrong with the bolt that's installed other than a little surface rust? Take it off and clean it up and paint it black or silver and be done with it. Just my opinion.

peter_d

Sure looks like the one. Thanks Colonel

peter_d

The photo of the bike at the top of the page isn't mine. I've been trying to track down the correct binder bolt for a frame I recently bought.

Old Yeller

Oh, now I understand, I hope I wasn't the only one confused!

Chombi

Yeccchh!.. that knurled bolt and nut affair sure looks fugly, Never-the-less, if the OP sees threads on one clamp ear and a countersink on the other clamp ear on his bike for an allen bolt head, then a flush bolt is what was on the bike. Could be a running change by the builder....definitely, for the good, IMO....

peter_d

I agree, the lug looks considerably more sophisticated than the bolt shown but I suppose the important thing is does it hold up the seat?

Chombi

I'm sure it will hold, as long as the threads are OK on the clamp ear....Heck!, I prefer that setup on your bike so much more to the goofy Jamb bolt style one I have on my 1984 Peugeot PSV! (Also with a fastback style rear cluster)....... And even that one had been holding up my butt on the bike since I bought it in 84, so I can't see any problem with yours, as long as you adjust/tighten the clamp appropriately.....

IthaDan 

Go to a hardware store and get a 1/4"-20tpi, a 1/4"-28tpi and whatever M6 bolts they have. Get them all in the the ballpark of the length you need. Go longer if the unthreaded portion of the bolt is short enough. Cutting bolts is easy.

It'll cost like $4 for all of these in stainless.

mapleleafs-13 

how are you going to plan to build it up peter?

I'm glad it went to someone that's going to really enjoy it. I may have another frame you might be interested in

peter_d

Hey Andrew, the serial # points to right around 1970. As you know it must have gone back to the factory at some point and had shifter and bottle cage boss's brazed on, then the rechrome and repaint. I'm not even going to attempt period correct components but will modernize, I have a Campagnolo Victory crank and mechs, probably Modolo brakes and a beautiful brand new Giles Berthoud saddle to use on it. BB and crank are on it allready and the chainline looks good. Very slight BB distortion as was common with early Bob Jacksons but nothing to worry about. Dunno if I can afford another frame right now .

Citoyen du Monde

I went to my local hardware store today with a bolt that I took out of my Jackson tandem. As I already wrote earlier, it is not Metric. It is likewise not SAE.

peter_d

Thanks so much for checking it out Citoyen du Monde, guess that leaves BSC, makes sense considering the age and origin.
Cheers!

JohnDThompson 

You might try looking for that bolt at a place where they service British motorcycles.

peter_d

I'll do some looking around, thanks John, also trying Hilary Stone.

callig

This is the bolt that came on my Condor and the head is to big to fit in the lug but this should give some idea as to the thread used

Chombi

Mehhh....this missing allen head bolt should still be much easier to find than say........the bearing tipped, seat post grub (jamb) bolt used for mid 80's Vitus frames... talk about proprietary parts!... 10mm coarse threading to boot!

23skidoo

Baxter Cycle in Marne, Iowa is your source for British threading; I've purchased a couple sets of Viscount crank bolts from them. https://https://www.baxtercycle.com/

peter_d

Thanks 23skidoo, i'll check them out.

Pars 

This might be helpful...

https://www.cyclebanter.com/showthread.php?t=235823

peter_d

I sent an email to Hilary Stone too, figure if anyone will have the correct bolt he will. If not i'll just use a 1/4 inch stainless steel carriage bolt. 1/4 inch will be thin enough to pass through the threading without actually engaging the threads then just a stainless acorn nut and lock washer on the other side.
Thanks everyone for your help with this.

peter_d

Thanks Pars... I went and got an 8mm bolt earlier but it doesn't fit either.

callig

I am still looking for the bolt for my Condor fastback stays I found this on line anyone knows if this works? and also if the op found anything


Thanks

gaucho777 

If all else fails, you may want to give Stone's Cyclery in Alameda, CA a call. They are a licensed Bob Jackson dealer. I'd be surprised if they couldn't get a replacement binder bolt for you--either from their supply or by going through Bob Jackson.

Stone's Cyclery - Alameda, CA | Yelp
(I gave the yelp page since their main website appears to be down at the moment, but I was just there a couple weeks ago and they were very much in business. They had perhaps ten or so Bob Jackson's for sale, including a lovely junior frameset for 24" wheels. It would be a real loss if they went out of business!)

Stones Cyclery, Alameda, California

dyander

Callig, here is the photo of mine. The head is unusually small to slide into the recess in the stay lug. Sorry I only have one. PM me if you need anything else, maybe I can find someone locally who can machine one off the model. It also takes an odd size SAE allen wrench which I had to find at an auto parts store. You might want to take Gaucho777's advise and call Stone's Cyclery first.

juvela

yes, indeed. fastener shown in JohnDThompson post is Gripfast.