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#890774 09/15/22 1:04 am
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I'm just starting this project with no prior BSA experience. The bike is in a lot of boxes with the frame bare. I'm trying to figure how the coils and the front frame bracket to mount the side covers. (the oddie stud mounts on the ends) I need a picture of that area of the frame to determine if I have some pieces missing. I don't know what years before or after 67 are the same. Mine must be a later 67 as the diode heat sink is under the steering neck. The factory shop manual shows nothing. Any help would be appreciated. Thanks, Gary


67 BSA A65L, 67T120R, 71 Hodaka 100B, 72 HD Aermacchi 350SS "cafe racer" 60 HD Duoglide, 77 HD FLH, 79 HD FXEF, 12 HD FLHTC
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One thing to be aware of is the Thunderbolt single carb, and Lightning twin carb side covers and the cross mounted bracket are different. I see no help in the shop book as you mentioned. The Parts book does show the 2 types, but not how they are mounted. It does show the small stand off “links” between the bracket and the frame. Those get lost and then the whole thing makes no sense. Sometimes the Haynes books help with this kind of question. They are cheap and do have photos of greasy work in progress which can be a help. (but not this time, just checked!) If I get near my ‘67 A65L I’ll try to take the cover off and get a photo, but maybe someone here can beat me to it!!
BTW,…. Welcome aboard the Board! I think a ‘67 is one pretty bike, 1 year only small badge/ twist lock cap tank, still the older simple tail light, rotor access cover, and other good bits. But then I’m partial! Good luck with the project,……. Where’s McKean Township? 👀

Last edited by KC in S.B.; 09/15/22 4:14 am.

Down to ‘69 T120R now a Tr6R tribute bike
‘70 TR6C “happy in the hills”
‘67 A65L numbers match, “best effort” from basket *
Gone:
‘66 A65L“in ‘95 getting back in the game”+ empty ‘67 Case&Frame *
‘69 A65L
‘68 A65L “red bike” basket, sold & made whole by BB member
‘68 A65F nice Tribute bike
‘65 A50L bitsa from spare parts, Son’s fun
‘62 A10 Spitfire
‘65 T120R sad case, saved by BB member
'65 XLCH “scratched THAT itch”……
‘93 K1100RS heavy metal (should be gone, still here…)
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Thank you, KC! For the quick response. After a couple days of searching through boxes I'm finding more parts missing from a supposed "complete" bike than expected. Please keep me in mind about a photo when you can get to it. Where these parts can be sourced is another issue. Buying is sometimes a lot easier than fabricating. I have learned a little about this -Y bike issue, mine being linked to the movement of the zener diode from the battery area to the fork area. I hope for no more surprises. Gary


67 BSA A65L, 67T120R, 71 Hodaka 100B, 72 HD Aermacchi 350SS "cafe racer" 60 HD Duoglide, 77 HD FLH, 79 HD FXEF, 12 HD FLHTC
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some pics here.
https://britbike.com/forums/ubbthreads.php?ubb=showflat&Number=295329

How I found them, https://www.google.com/search?client=firefox-b-d&q=britbike+forum+a65+coil+mounts%2F+brackets

Last edited by gavin eisler; 09/16/22 9:28 am. Reason: finding

71 Devimead, John Hill, John Holmes A65 750
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Thank you, Gavin, for the link. Your help continues to shed light on my coil mount dilemma. I'm going out to the shop and try to put this puzzle together. I never would guess the coils would be mounted this way. I'm still hoping for more pictures. Gary


67 BSA A65L, 67T120R, 71 Hodaka 100B, 72 HD Aermacchi 350SS "cafe racer" 60 HD Duoglide, 77 HD FLH, 79 HD FXEF, 12 HD FLHTC
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nothing is ever the same way twice on BSAs.


i'm old enough to remember when patriotism meant not trying to overthrow the government.
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Unless you want 1967-style authenticity, I would change the coil mounting to 1968 and later style, when both coils were mounted vertically, side-by-side.
It's a much cleaner installation.

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Irish Swede, thanks for the reply. I may still have pieces missing but I am leaning toward your suggestion and go with the 68-style mounting. It seems to be less complicated. I'm getting educated here about the changes BSA made seeming like one year to the next. Still can't figure out the extra hole and length of the first bracket that mounts on the right frame tapped hole. Gary


67 BSA A65L, 67T120R, 71 Hodaka 100B, 72 HD Aermacchi 350SS "cafe racer" 60 HD Duoglide, 77 HD FLH, 79 HD FXEF, 12 HD FLHTC
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“Irish Swede, (from above)
Unless you want 1967-style authenticity, I would change the coil mounting to 1968 and later style, when both coils were mounted vertically, side-by-side. It's a much cleaner installation.”


x2Gary,…. Sorry to be of no help after all, as my ‘67 is setup as a single carb bike now. A65LA215 was a Lightning, and when I got tired of endless 2 carb fiddling, made it a single carb ThunderBolt. So, my covers are mounted using the Tbolt bracket, item No.1 in the parts book, but I believe yours is the item No.9 with the 2 links. (Ref courtesy of CBS website parts books) Anyway, removed the side cover and took some photos.
Out of that exercise, I do recall the much over looked spacers that are used in the coil clamps to prevent crushing the cans. You can just make one out in the close up shot. My 6volt coils have rubber added, as they were too small for the clamp. Hopefully you can make out the order of installing the parts if you use this vertical coils system.

504A715C-79D1-473F-97A2-2DD6738DA9B2.jpeg 52093D0C-78D0-48C4-BF73-9EB4D468C594.jpeg 5DE7BCD7-B54B-4E4C-9AFE-262B7F53F61A.jpeg F1092D72-9EF3-4D2B-A05A-326C868DB2EF.jpeg 7DE54770-8D8D-4435-A0C6-9333A4177CD2.jpeg
Last edited by KC in S.B.; 09/17/22 11:04 pm.

Down to ‘69 T120R now a Tr6R tribute bike
‘70 TR6C “happy in the hills”
‘67 A65L numbers match, “best effort” from basket *
Gone:
‘66 A65L“in ‘95 getting back in the game”+ empty ‘67 Case&Frame *
‘69 A65L
‘68 A65L “red bike” basket, sold & made whole by BB member
‘68 A65F nice Tribute bike
‘65 A50L bitsa from spare parts, Son’s fun
‘62 A10 Spitfire
‘65 T120R sad case, saved by BB member
'65 XLCH “scratched THAT itch”……
‘93 K1100RS heavy metal (should be gone, still here…)
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For '67 Lightning, the left coil was leant over, as in Gavin's photos. The picture on the right is closer to what you have, although for some reason they don't show that angled bracket. I had an original '67 Lightning and it had that angled bracket, which is curled on one edge BTW, to catch the edge of the side panel bracket. I can't remember if there was a spacer to move the coil away from the side panel bracket, but I would say, if it needs it, put one there.


Mark Z

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Originally Posted by kevin
nothing is ever the same way twice on BSAs.


Well said Kevin.....

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Phil,from my experience, it certainly seems that way!

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Thanks to all those who replied. With your help, this is what I came up with. I like the 68 style better, but when I get to the mockup stage, I'll know better which way to go. I still don't have the picture upload system figured out. This was luck. Gary
[Linked Image from i.postimg.cc][/img]


67 BSA A65L, 67T120R, 71 Hodaka 100B, 72 HD Aermacchi 350SS "cafe racer" 60 HD Duoglide, 77 HD FLH, 79 HD FXEF, 12 HD FLHTC
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Almost correct, but the left coil should be slid down in its clamp to where it just clears the crankcase and side panel.


Mark Z

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Thanks Mark, your help and others here on this forum are reducing the boxes of unknown pieces and parts, and where they go. I'm learning a lot about these BSA's and their uniqueness. The latest revelation is the BSF 22tpi hardware and where they go! Gary


67 BSA A65L, 67T120R, 71 Hodaka 100B, 72 HD Aermacchi 350SS "cafe racer" 60 HD Duoglide, 77 HD FLH, 79 HD FXEF, 12 HD FLHTC
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So typical of the ways BSA often did things.
Factory "bodges."

A bracket to adapt another bracket to the frame.

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Originally Posted by Irish Swede
So typical of the ways BSA often did things.
Factory "bodges."

A bracket to adapt another bracket to the frame.

You want to know what is worse…

They changed the setup to as per KC’s design for all models in 68…. Though for all the parts books to the end of pre oif production…. Still state the style that D.I.T Gary is using. All they did was remove the designation of spitfire on the parts list.


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (now rebuilt)
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No wonder BSA died and the Japanese succeeded


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If you're not too concerned about originality, consider fitting a dual output coil which has the advantage of being much smaller and fits nicely on the mounting bracket.

I'm using a dual output coil on my A65 Firebird basket case, its worked well over the last 5 years or so.


1968 A65 Firebird
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2nd what Gunner said, I have fitted about 10, all still going and racing.

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This has come up before, but I don't think it was ever resolved whether or not you can use a dual output coil with breaker point ignition.


Mark Z

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Originally Posted by Mark Z
This has come up before, but I don't think it was ever resolved whether or not you can use a dual output coil with breaker point ignition.
Wire the two points leads together, then connect to the coil.


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If wired in parallel the coil only fires when both points are open. The coil only charges when both points are closed.
Cannot wire in series since one side of the points is always grounded.

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Originally Posted by DMadigan
If wired in parallel the coil only fires when both points are open. The coil only charges when both points are closed.
Cannot wire in series since one side of the points is always grounded.

Agree, points in series will not work. The reason I'm doubting the parallel setup is that I noticed, on my A65 when it had breaker point ignition, that the points would open slightly on the back side of the cam. I could see this with my strobe light; I believe this is referred to as a rogue spark, something which is not supposed to happen, but from what I hear, is a typical problem with the BSA breaker setup, perhaps only when there's play in the dwell cam bushing or idler pinion bushing. I had two coils at the time so it wasn't a show-stopper, but it seemed like it would cause a problem with a single coil.

I didn't get a chance to prove or disprove my theory because I converted to electronic ignition.


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I had not seen it done before i came to aus, but it was quite common practice here.
As i remember you have to mess about with the points plate and wire the 2 sets in series.
Someone like Trevor (WM20) will know the finer points (pun!) of the method.
The main reason for doing this was to utilise old jap coils

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