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Re: Clubman resources?
Dennis Yurcik #813899 06/25/20 8:22 am
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Roy's books are written mainly from UK press releases, he hardly covers US specs at all, so there is always doubt when using his references on US restorations.

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Re: Clubman resources?
Dennis Yurcik #813901 06/25/20 8:57 am
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I have copies of Roy Bacons.
" BSA twins and triples"
and
BSA twin restoration"

they are not perfect as Kommando notes, I look them up mostly to get carb specs to answer cheapskates here.
They are better than nothing, and if you have a UK model, they are very applicable.The US variants are mostly cosmetic , although if you get one of the competition models , Wasp, Cyclone ,Hornet, there seems to be a plethora of nuances that bacon doesnt cover.

The Lightning Clubman was not made in massive numbers , I have never seen a real one in the flesh, they have been features in Classic Bike magazine a few times. One of the local boys , Ewan Magregor has one, I think CB did an extensive article on it a few years ago. I suspect that like Vincents , there are now more LC reps out there than the factory made. Apart from the siamese pipe ( twin pipes were an option, I suspect the siamese pipes were mostly to appeal for sidecar owners) and Clubman bars , the main difference for the LC was the close ratio gearbox option, AFAIK this model was the first to come with a more sporting gearbox. This is a good gear set.

Last edited by gavin eisler; 06/25/20 9:03 am.

71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
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Re: Clubman resources?
Dennis Yurcik #813904 06/25/20 9:45 am
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kommando & gavin,
Thanks for the thoughts on Roy's books.
Just did a quick search online, man those things aren't cheap. Wish I thought to buy them 20 years ago!

Re: Clubman resources?
Dennis Yurcik #813911 06/25/20 11:17 am
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I have a number of Bacon books. The LC has almost no coverage in them. There really isn’t much info anywhere except in assorted articles in assorted magazines that cover the vintage bike scene.

There is likely as much good info on this forum as exists anywhere. You just have to find it all.

There were 190 built. 45 or so are known to exist. I have seen 3.

I suspect more than 190 were built since there were 2 distinct models built. The Lightning Clubman (190 allegedly built) with rear sets, solo seat, and Clubman bars, the Lightning (unknown # built) with dual seat, standard bars, and standard foot pegs. Both were based on the US spec Lightning Rocket with high compression pistons and a CR gearbox. The CR box also shows up in some Hornets and some US spec LR’s. I believe some CR LR’s ended up in Oz as well. Most of the “Lightnings” I have seen evidence of are in Oz.


Never underestimate the human ability to elevate stupid to a whole new level!.
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Re: Clubman resources?
Dennis Yurcik #813916 06/25/20 11:49 am
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The old comment of: a Clubman has a DC Motor (Lightning = D, close ratio box =C) but a DC motor doesn't make it a Lightning clubman.

Aren't Clubmans supposed to have 10:1 compression also? whereas the stock Lightning is 9:1.

weren't these bikes built for homologation purposes like the A70 (meaning a production run of at least 200 had to be built?)

I know of 2 genuine Clubmans, I'm also sure that neither are for sale.


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (undergoing restoration)
67’ D10 sportsman (undergoing restoration)
68’ D14 trials (undergoing transformation)

Re: Clubman resources?
Dennis Yurcik #813926 06/25/20 12:21 pm
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Again according to RB Specs appendix.
CR options for A65s R/ L/ /LC 63- 65
9 :1 with the 64 R having an 11:1 option one year only, I can guess why that was deleted later.

65 -70 A65 T / L /

CR options 9 :1 with 10.5 :1 for SpitsMk 2 and Hornets.

66 -70/2 Spit Mk 3, Spit Mk 4 , Firebird, A70
all 10:1 except A70 9:1

70 -73?
A65 T , L, FS
all 9:1
with 7.5 :1 Low comp options.

What may have given the64 R/ 65 LC a better motor was the carb choice, twin , 389s with 1 1/8" chokes, the 66 L and H got 389/689 with 1 5 /32" chokes.its only a 1/32 difference , but the smaller carbs may have been more efficient?

Interestingly RB states the LC got a reversed cam plate to keep the gear change pattern with the reversed pedal. This was the same year the gear teeth form was altered.
" The most potent was the LC whose engine produced 51 [email protected],750 rpm " not sure why its 3 HP up on the L
since motor specs are the same, cams , CR etc.probably marketing propaganda. I dont think its the siamese pipe, IME they restrict top end.

Last edited by gavin eisler; 06/25/20 12:34 pm.

71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
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Re: Clubman resources?
Dennis Yurcik #813933 06/25/20 1:40 pm
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I'm guessing the RB books are probably decent for standard Lightning info, but seems like there is no single authority on Clubmans. Glad to have the collective knowledge here to mine as needed.

Re: Clubman resources?
Dennis Yurcik #813937 06/25/20 2:01 pm
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Workshop manual top trumps them all. Roy Bacon's books are good for the pictures but thats about it in my opinion.


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (undergoing restoration)
67’ D10 sportsman (undergoing restoration)
68’ D14 trials (undergoing transformation)

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Re: Clubman resources?
Dennis Yurcik #813968 06/25/20 6:06 pm
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Originally Posted by Dennis Yurcik
I'm guessing the RB books are probably decent for standard Lightning info, but seems like there is no single authority on Clubmans. Glad to have the collective knowledge here to mine as needed.

Rich B is the authority on Lightning Clubman's.


1967 BSA Wasp
1967 BSA Hornet (West Coast Model)
1967 BSA Hornet (East Coast Model)
1968 BSA Firebird Scrambler
1968 BSA Spitfire Mark IV
1965 Cyclone Competition Build
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Re: Clubman resources?
Gary E #814144 06/27/20 12:51 am
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Rich B is the authority on Lightning Clubman's.[/quote]

Noted. ;-)

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