Hi,
Re the above, all illustrations I've seen, show the bracket nearest the primary drive bolted to a captive nut on the chain guard and pointing upwards.
Mine has a hole where the captive nut should be but there's no sign of weld or brazing to indicate it was ever there. The bracket was bolted down to a boss on the swinging arm but not attached to the chain guard - missing bolt/nut.
Any thoughts as to what is right?
It should be the same as on my '62 B40. I can't remember the exact detail as its a while since I put it on, but have a look at the pic. It's difficult to see but here's a raised area on the guard behind the bracket and I'm pretty sure there's a nut welded on here.
If you do a search on the forum for "Rear Chain Guard Removal" it will come up with a long thread that discusses the fixing of the chainguard on a B40 which I would imagine is the same as a C15 and should give you some useful information.
On my B40 I ended up taking the rear wheel off in order to get the chainguard off. Phil
Thanks everyone.
Mine's the same as your picture @ greenfield.
I'll do a search as suggested @ Pete.
Yes, I had to take my rear wheel out too @ Phil. I don't think
I've ever had to do that on a bike before to remove it
Hi,
Been looking at images of C15 Chainguards. There seem to be 2 types as in CHG 1 and CHG 2. Mine is like CHG 2 and leaves a gap round the rear of the primary chain case. It doesn't appear to have been butchered.
CHG 3 shows the rear of the chainguard. If you look carefully you can see the outline of the bracket against the chainguard and shows it's short of the hole. I've seen other pictures of a hole like that. As I said previously there's no evidence of any brazing or welding around the hole.
I would be interested in any info please.
A couple of things:
Did anyone have any thoughts on the chainguard scenario?
I made a new bracket out of 3mm stainless today and sprayed it so it looked in keeping. I used a bolt, 2 penny washers and a locknut to create my new fixing. It's now robust as it should be. Another one off the list.
Rick, Very belatedly, here are some pics of my (1965 B40F) chainguard. They're probably of no use or interest to you, but just in case. Sorry it took me so long to send these. Phil.
Further to my post a few minutes ago, you might remember I took the rear wheel off in order to get the chainguard off. Somebody on this forum ages ago warned me I would have to, and I found it hard to believe, but they were right. Phil
Good evening Phil,
Thanks for the pictures. Very much appreciated. No worries at all re delay. A reply makes up for it.
I would say my chainguard is the same as yours. I don't know if the C15 and B40F are the same? It leaves a gap around the primary which doesn't seem right. Perhaps a C15 guard wouldn't? I also had to remove the rear wheel which I found hard to believe.
My bike although pretty original seems to have quite a few improvised mysteries. It reminds me of the old 1970s saying that BSA stands for Bits Stuck Anywhere.
The basic C15 and B40 models all used the same chainguard (40-7701) which remained unchanged over the period 1958-67. I haven't looked at my C15 and B40 to check this but it's possible that BSA varied the design details while keeping the part number the same. It's also possible that a pattern part had changes made to the profile to make manufacturing easier.
I have a captive nut, where Blackthou has a hole .My bike is a 1966 C15