I need guidance. I'm restoring two unit const twins; '67 a50 and '65 a65 twin-carb-bitsa. Neither basket had correct installation of the side covers or coils. With the A50, the PO drilled holes in the frame and put in threaded rod to hold the side covers on! I'm trying to get this area sorted back to stock configuration.
Anybody got pics of the correct coil mount bits and side cover bracket installations for these two bikes or direct me to appropriate resources? (Bacon=0, Factory Parts manual=0, Haynes/Clymer=0)
One of the bits I acquired from eBay is a straight "C" shape and with odie clips and appears to clamp the coils horizontally, the only pics I've found suggest this might be for early unit Spitfire. I have another that appears to be a twisted "C" shape with odie clips in the end. I can't figure out how either would fit. How do either of these parts attach to the frame? I think I must be missing some small brackets or tabs. The a50 came with coil brackets that mount both coils directly under the single carb. Doesn't fit well, twin carb setup?
I'll try and get pics soon.
It's winter here, nothing better to do than get these guys up and running. There's good info out there and here for just about every other aspect of unit twin restoration, but I've hit a wall when it comes to this coil and side cover mount issue.
Any help would be appreciated. Tod - Milwaukee Wisconsin
The coil mounting/side cover mounting is "interesting" on that vintage. The straight "C" shaped bracket is, without pictures and guessing, the correct bracket. It requires brackets P/N 68-9279 TS and 68-9278 on the DS to mount. Coil mounting is crude. TS coil hangs from the bottom hole of 68-9279 bracket vertically. DS coil mounts horizontally from the tab on the frame on the DS to mount bracket 68-9278. The "C" shaped bracket is attached to the top holes of the 2 brackets.
Not sure what you mean by the shape of the other bracket. 68 on had a simpler mounting arrangment for the sidecovers. It was a "C" shaped bracket with vertical brackets on the end to mount the side covers. It had no adapter brackets to mount it to the frame. The coil brackets were somewhat complex on the later bikes
If I wasn't semi crippled at the moment and lazy :p , I'd take the side covers off my 65 and take a picture.... Until those 2 conditions pass....maybe someone else can post a picture
The best source for indentifying parts on multiple years is the CD: Kim The CD Man. It has all the parts manuals and more. It is available on the site. Look along the left column in Red. I use the CD almost everyday.
What model '67 A50 do you have? I'm looking for a Wasp (A50WA).
1967 BSA Wasp 1967 BSA Hornet (West Coast Model) 1967 BSA Hornet (East Coast Model) 1968 BSA Firebird Scrambler 1968 BSA Spitfire Mark IV
The long C-shaped bracket and the straight coil bracket look like those on my '67 A65L. On the straight coil bracket, the hole that's about halfway down is where it mounts to the frame. You should have two tabs with threaded holes sticking straight up off the frame cross-tube. The left-side coil clamp looks correct, but there should be another piece between it and the side panel bracket, with a hole for mounting to the frame, like on the other side. Looks like a '67 Factory Spares manual (and a '65 as well) would help greatly here.
When you get it all back together, note that the side panel bracket can be moved to the left or the right when the mounting bolts are loose. You should leave the bolts a little loose, mount the side panels, and then move the bracket so that there is equal tension on the panels and oddie clips, then tighten up the bolts. Failure to center the bracket will cause one panel to rattle and the other one to crack.
That is 68-9279 bracket mounted correctly. The lip seems to me to keep the coil clamp from rotating.
That is the correct arrangement for dual carb (and probably most single carb) bikes from 65 - 67. There was also a strange mounting system used by early single carb that actually used the carb studs to mount the bracket. The arrangement you have may have also been used on 64 Hornet's (memory is a bit foggy and I am too lazy to check :p ).
You just need to find/make a 68-9278 bracket. You can use the existing bracket as a pattern if you want to make it. Just leave off the area under the middle hole.
The bike is a '67 Royal Star (A50RA38**)I bought it in '77 with some unusual 'upgrades' and some extra parts.
My last pic flubbed, I'll retry.
I've got these coil mts and another 'twisted' bracket (placed on my 2nd frame for illustration only). Can you describe what years/models the coil mt system is for? and is the side panel bracket supposed to be slightly twisted?
I have a factory spares manual but I'm having trouble visualizing these parts.
The coil brackets are for 68 on. Though I have seen some late 67's those brackets. Not sure if someone added it or another BSA mystery. They will work with whatever you are trying to build. Make sure you make a sketch or take pictures as you take them apart, they are tedious to reassemble.
The twisted "C" shaped bracket looks like an attempt by a PO to make that bracket work without using the 2 brackets I listed the P/N for above. Probably won't is my guess.