Author Topic: 1930 s6 No valve lift or Mag kill button?  (Read 1909 times)

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Offline Ian Dabney

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1930 s6 No valve lift or Mag kill button?
« on: 08 May 2014 at 18:04 »
I have recently acquired an old restoration 1930 S6, I am new to Douglas and enjoyed the first ride; however it does not seem to have a valve lift or mag kill to stop the engine! (enclose picture of mag). Help and advice appreciated.
Ian

« Last Edit: 12 May 2014 at 22:03 by Dave »

Offline Doug

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Re: 1930 s6 No valve lift or Mag kill button?
« Reply #1 on: 09 May 2014 at 02:13 »
Ian,

That is correct, there was no valve lift mechanism or magneto kill circuit fitted by the factory. Generally they are setup so that when the throttle is fully closed they cease running. The throttle was either (initially) a lever type or a twist grip with a friction device. Either stayed where you left it, so you do not set a low idle setting with the throttle stop on the carburetor, like you would with a more modern spring return carburetor. The sring above the slide only ensured that the slide returned to the closed position as the throttle cable was slacked off.

-Doug

Offline Ian Dabney

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Re: 1930 s6 No valve lift or Mag kill button?
« Reply #2 on: 09 May 2014 at 08:23 »
Doug,
Many thanks for your answer,
regards
Ian

 

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