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Conical hubs #780438 08/03/19 5:01 pm
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drunkenmonkz Online Content OP
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Anyone know the reason bsa/triumph went to the conical hub design?

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Re: Conical hubs [Re: drunkenmonkz] #780439 08/03/19 5:15 pm
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kommando Offline
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Fashion, the conical hub was used on the Manx Norton and was racy, that also make them expensive hubs as the Cafe racers use them as even at these prices they are cheaper than the genuine Manx hubs.

Re: Conical hubs [Re: drunkenmonkz] #780446 08/03/19 6:42 pm
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Servodyne Offline
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Style, lightness and cost of manufacture, but not necessarily in that order.

Why do you ask?


1957 BSA A10 Spitfire
1971 BSA A65 Firebird
1971 BSA A70 Lightning
1975 Norton Commando
1961 Norton 99
Re: Conical hubs [Re: drunkenmonkz] #780502 08/04/19 6:12 am
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Allan Gill Offline
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I'm sure someone on here compared weights with the QD hubs and found the QD hubs to be lighter.


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Re: Conical hubs [Re: drunkenmonkz] #780507 08/04/19 8:06 am
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BSA_WM20 Offline
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That is what happens when you employ external stylist to design a bike.
Form overides function.


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Re: Conical hubs [Re: Servodyne] #780771 08/07/19 12:57 am
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drunkenmonkz Online Content OP
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Originally Posted by Servodyne
Style, lightness and cost of manufacture, but not necessarily in that order.

Why do you ask?


Jist curious. Was wondering if there were real benefits to the design or just an ugly attempt by bsa/triumph to stay relative in the market at the time..

Re: Conical hubs [Re: drunkenmonkz] #780787 08/07/19 6:32 am
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Allan Gill Offline
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When the previous 2 designs (other being full width cast hubs) meant you could remove the back wheel with out touching the chain, then with the conical hub you had to remove it, pretty much a backwards step. They didn’t even open up the slot on back of the swing arm to aid removal like the B44’s and later on jap bikes had.


beerchug
Re: Conical hubs [Re: drunkenmonkz] #780849 08/07/19 9:16 pm
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raf940 Offline
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I may be wrong but there are 2 OIF bikes here and looking at the conical brake I see hints of Formula 1 early late 60s early70s era brake scoops and racebike scoops from same time period that and the 'ceriani' type forks and skinny fenders with wire 'stays' all scream 'make it look mod' PS I love the quick detach feature on the rear wheel of my 68 A65

Last edited by raf940; 08/07/19 9:17 pm.

1972 Triumph T120
1968 BSA A65
1968 MGB Roadster
1979 Chevrolet Camaro Berlinetta
1969 Honda Mini Trail
1939 farmall f30 tractor
2004 Honda Shadow Aero
1972 BSA Thunderbolt
1975 yamaha xs650b
1972 Norton commando
2 olive drab WWII military bicycle replicas

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