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+--- Thread: Mag Drive Spindle (/showthread.php?tid=4160)
Mag Drive Spindle - Chris KC - 08-04-2020
I don't know if anyone will find this of interest, but I was reading a review on Amazon of Graham Robson's book "The A-Series Engine: It's First Sixty Years", posted by a gentleman named R.J. Battersby, who in his own words "was an engine designer at Longbridge between 1970 and 1976 and spent a significant period working as a member of the A-Series team."
I'll simply quote:
"One thing that Robson didn't mention was something I learned when I was modifying the material specification of the A-Series distributor drive spindle (which had a 9 tooth helical gear at one end engaging with the camshaft drive gear and a slotted flange at the other end driving the ignition distributor). I got the original drawing from the drawing stores and noted that it was first drawn in the early 1920s. I then noted that its name had been changed from 'Magneto Drive Spindle'. Yes, this was a part first designed for the 1921 Austin Seven engine and was probably the only part still in production that would fit an engine built almost 50 years before!"
RE: Mag Drive Spindle - Charles P - 08-04-2020
Odd though that the magneto drive spindle doesn't have a 9 tooth helical gear.
I suspect the author was confusing magneto and distributor or dynamo!
RE: Mag Drive Spindle - Zetomagneto - 08-04-2020
Total nonsense, an A series distributor drive spindle is nothing like an Austin Seven mag drive shaft
RE: Mag Drive Spindle - Chris KC - 09-04-2020
1970 was a long time ago....of course it's entirely possible an old drawing might have been heavily altered by the time Mr. Battersby saw it.
RE: Mag Drive Spindle - Zetomagneto - 09-04-2020
Chris, are you familiar with the A series?, or a Magneto drive.Here is an A series distributor shaft
RE: Mag Drive Spindle - Ruairidh Dunford - 09-04-2020
Interesting quote Chris - next thing you know someone will be thinking it was you that said it.