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#47429 - 05/22/06 9:25 pm Lucas Magneto Identification help Needed: Prefer Website!  
Joined: Aug 2001
Posts: 6,664
Jon W. Whitley Online content
Jon W. Whitley  Online Content



Joined: Aug 2001
Posts: 6,664
Vermont
Does anybody have the info or know of a site that identifies Lucas magneto's, which bikes they were applicable to and the proper rotation of said mags?

I've got a Lucas mag 42453A made in 1964. This mag came on my '54 Tiger 100 when I bought the bike. Bike really didn't want to run with it...so I changed magneto's...it runs...using mag K2F 42344A.The latter mag has the arrow missing from the tag for direction of rotation (clockwise-anti-clockwise) but since the bike runs I'll assume it is correct bigt

The direction of rotation for the K2F 42453A mag is clockwise from the drive end (according to the arrow). I also with some limited research have been able to identify this mag as used on AMC, Norton, Matchless bikes. I'm pretty sure all Triumphs used a anti-clockwise rotation mag. Someone please correct me if I'm wrong.

Also, is it possible for the home mechanic to change the slip ring (to anti-clockwise slip ring) if that's only as far as I go?

beerchug


Jon W.


1957 6T Thunderbird 650
1971 TR6R Tiger 650
1955 Tiger 100 - Project
1970 BSA A65F 650 - Project

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#47430 - 05/23/06 4:14 am Re: Lucas Magneto Identification help Needed: Prefer Website!  
Joined: Oct 2003
Posts: 11,108
RF Whatley Online content
BritBike Forum member
RF Whatley  Online Content
BritBike Forum member

Joined: Oct 2003
Posts: 11,108
North Georgia, USA
As I understand it, the slip ring, points plate and cam are the determining factors in mag rotation.

You can easily bust a slip ring if you don't use the Lucas factory puller. One hairline crack and it's dead. Every good Brit bike shop has a Lucas slip ring puller.

bigt


Don't hide 'em, Ride 'em !!

RF Whatley
Cornelia, GA

"Shop Boy" at Rodi British Bikes
#47431 - 05/23/06 4:22 am Re: Lucas Magneto Identification help Needed: Prefer Website!  
Joined: Aug 2001
Posts: 6,664
Jon W. Whitley Online content
Jon W. Whitley  Online Content



Joined: Aug 2001
Posts: 6,664
Vermont
Thanks RF,

I pretty much figured that was the case. Well, I'll have to wait until my re-enlistment bonus comes in and send it off for a 2006 update/change, etc (freshening up to better than new condition)!

beerchug


Jon W.


1957 6T Thunderbird 650
1971 TR6R Tiger 650
1955 Tiger 100 - Project
1970 BSA A65F 650 - Project

#47432 - 06/04/06 7:01 pm Re: Lucas Magneto Identification help Needed: Prefer Website!  
Joined: Aug 2001
Posts: 1,105
J in KC Offline
BritBike Forum member
J in KC  Offline
BritBike Forum member

Joined: Aug 2001
Posts: 1,105
Kansas City, USA
Jon,

While it's probably too late, just for your edification here's the info.

42344 K2F 1957 Triumph 5TAC & 6TAC (export USA)
1958 Triumph T100 & T110 (export USA)

The closest I can find to your 42453A is a 42413A which is listed for 1963 A10 Super Rocket & Rocket Gold Star.

#47433 - 06/04/06 10:38 pm Re: Lucas Magneto Identification help Needed: Prefer Website!  
Joined: Aug 2001
Posts: 6,664
Jon W. Whitley Online content
Jon W. Whitley  Online Content



Joined: Aug 2001
Posts: 6,664
Vermont
Thanks for the help J in KC smile

I just sold the 42453A magneto. It's history!!! My 1960-1962 Triumph B range replacement parts catolog also lists 42344 as the magneto for T110 and T120 with blanked off manual advance. My 42344A mag was made in 1955 and is blanked off as well. It works fine.

beerchug


Jon W.


1957 6T Thunderbird 650
1971 TR6R Tiger 650
1955 Tiger 100 - Project
1970 BSA A65F 650 - Project


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