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For Sale Lightning Brakes

Albervin

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VOC Member
There is a set of "Lightning" brakes for sale on e-bay Australia. The problem is the brake drums are non-finned Rapide/Comet drums.
 

peter holmes

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VOC Member
They look quite nice, with little attempt to deceive, clearly not original as the air scoops are cast in, as opposed to bolted on, cast in is probably better, I would have thought that if you want better brakes than standard, then Vincent Speet brakes are definitely the way the go, far better brakes, and with ribbed drums.
 

timetraveller

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VOC Member
I think that the drums are finned. If you look at an enlarged view of the bottom row, second from the left, you can just about see the fins. However the drums are all five hole ones, ok for the front but not 'Black Lightning' enough for the rear. Also there are no pivot pins or cams
 

stumpy lord

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VOC Member
I think that the drums are finned. If you look at an enlarged view of the bottom row, second from the left, you can just about see the fins. However the drums are all five hole ones, ok for the front but not 'Black Lightning' enough for the rear. Also there are no pivot pins or cams
the pins are in the plastic bag
 
Last edited by a moderator:

davidd

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VOC Member
It does look like there are pivot and anchor pins. I suspect the cast in scoops do make the plate stiffer. I would think the other parts would be expected to come from the street brakes. This is Franc Trento's shop.

David
 

Robert Watson

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VOC Member
Chances of them being anything but an aluminum alloy are likely less than .0000000000001%. Still would make a nice set of brakes that look period.
 

timetraveller

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VOC Member
I can't be sure of all the details after all this time but about 40 years ago one of the UK dealers had brake plates which looked similar, or the same, to these cast and machined. They were aluminium and had the cast in air scoops, of that I am sure. Possibly there is someone out there who had, or still has, a set of those which can be compared with the ones in the advert.
 

vibrac

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VOC Member
I can't be sure of all the details after all this time but about 40 years ago one of the UK dealers had brake plates which looked similar, or the same, to these cast and machined. They were aluminium and had the cast in air scoops, of that I am sure. Possibly there is someone out there who had, or still has, a set of those which can be compared with the ones in the advert.
That was Roger Slater what a wonderful arrival they were back then because at the time we were cutting holes in steel plates and riviting on sheet alloy scoops to keep the heat down when racing and they were a great improvement they do look like his.
 

Chris Launders

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VOC Member
I have a set that look just like that, as far as I can tell, on mine and they must have been on at least 30 years, they were on when I got it and when the previous owner got it and he got it from Chris Williams who hadn't used it for many many years.
 

Bill Thomas

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VOC Member
That was Roger Slater what a wonderful arrival they were back then because at the time we were cutting holes in steel plates and riviting on sheet alloy scoops to keep the heat down when racing and they were a great improvement they do look like his.
They would have been, If the hole was in the middle !. Cheers Bill.
 

Garth Robinson

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VOC Member
They would have been, If the hole was in the middle !. Cheers Bill.
I bought a set like that from Ted Davis many years ago.They seemed to have been cast in a hole in the back yard. It took weeks of filing to get them to fit,there was no way you could use them without lots of fettling.Strangely,after all that they were much better in use than the steel ones they replaced. I still have them on my B.I was offered a set of Slater plates, but I had read somewhere in MPH that some primitive machining had been done on a drill press so I passed on the offer.
 

timetraveller

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VOC Member
The comments by Bill and Garth above have stirred up my memory. I did recall that there was some problem with these plates but could not remember what it was. Poor machining was probably it. I do remember that at one stage there were lots being offered with not many taker. These days with modern machining facilities it should be relatively easy to re-machine and bush the holes wherever required.
 

Bill Thomas

Well Known and Active Website User
VOC Member
Soon as I saw the fixed scoops, I thought about the Stuck on gauze, Joke !, They fell off and got tangled
with the shoes.
I fitted mine the night before Cadwell, My Mistake !. I overshot the Hairpin, And nearly wound up in the Paddock !. Ron was on the grass Bank, And said, You are going to have brake a bit sooner !.
I was very new to Racing.
Ron welded up some shoes, To make them fully floating, and 2 cams per plate = , 4 leading, Sort of, They were a lot better, But not what I needed, It would have worked better if we had 2 cams and 2 fixed pivots,
But I didn't really know what I was doing, At the time, I didn't know it was just the hole in the middle that was the trouble. Cheers Bill.
 

bmetcalf

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VOC Member
Glenn Shriver got a set in the early '80's or so that had a lot of voids in them and got someone to fill them up for filing by Glenn. Maybe from Doug Hollis?
 

peter holmes

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VOC Member
I also had a set of the Ted Davis alloy brake plates, purchased direct from Ted himself at 5 Whitethorn Lane, Letchworth, when I queried with Ted why the brake cam drillings were not bushed he told me it was not necessary, the brake cam hardly moves and as long as it is kept lubricated no bushing was necessary, who was I to argue. a mere mortal, with the ex chief development engineer with Vincent Motorcycles, is/was he correct?
 

vibrac

Well Known and Active Website User
VOC Member
They would have been, If the hole was in the middle !. Cheers Bill.
I can tell you Bill that they were good compared to the set of Robinson twin leading shoe brakes I bought with my First Egli from Roger Slater, they were a disgrace! I clocked 132 through the speed trap on the proper Norwich Straight at a Bantam meeting and the next week at Snetterton again this time I put on a half fairing and hit the brakes at the same marker end of the straight, the lever came back to the twist grip I finished in the gravel trap up to my knees and the back brake drum cracked in half. I gave the whole sorry assembly to Ron Kemp and it lived under his bench for years he could never sort it either
 

Bill Thomas

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VOC Member
Not saying they were all like that, But there were other people who had trouble,
Maybe ?, Quality Control, Which we still suffer from.
Cheers Bill.
 

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