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Austinsevenfriends
auto vs. manual ignition setting? - Printable Version

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RE: auto vs. manual ignition setting? - Colin Wilks - 04-10-2018

(04-10-2018, 05:54 PM)David.H Wrote:
(04-10-2018, 09:04 AM)Colin Wilks Wrote: A very useful ready reckoner a forum member told me about is one tooth = 4.5°. 
I had calculated that the A/R range would be around 24°, but checking it by using a lamp on the points and looking at the flywheel shows I have a range of about  18°.
I have concluded that trial and error is the best bet and now have the static timing set with the timing mark opposite the oil gauge take off (about 18°BTDC), with the A/R lever at its mid point (I'm the only driver).
Make sure that advancing the lever turns the distributor anti-clockwise. It's easy to get the linkage arse about face.
Anti clockwise viewed from above?.....
David
Yes.

RE: auto vs. manual ignition setting? - Bob Culver - 04-10-2018

On my RP the advance lever moves the distributor about 1/2 inch at 2 inch radius, indicating near 30 deg of crank degrees.
The rod may not be original length; a short rod can give a reduced and very non linear range. Also spring loaded to eliminate back lash. Even for hand cranking retard beyond TDC is not necessary. It would seem far preferable to stick with full advance as the reference, as per handbook instructions. If tinkering it may be of interest to determine just where TDC is on the lever in individual cars.

RE: auto vs. manual ignition setting? - David.H - 04-10-2018

(04-10-2018, 06:56 PM)Colin Wilks Wrote:
(04-10-2018, 05:54 PM)David.H Wrote:
(04-10-2018, 09:04 AM)Colin Wilks Wrote: A very useful ready reckoner a forum member told me about is one tooth = 4.5°. 
I had calculated that the A/R range would be around 24°, but checking it by using a lamp on the points and looking at the flywheel shows I have a range of about  18°.
I have concluded that trial and error is the best bet and now have the static timing set with the timing mark opposite the oil gauge take off (about 18°BTDC), with the A/R lever at its mid point (I'm the only driver).
Make sure that advancing the lever turns the distributor anti-clockwise. It's easy to get the linkage arse about face.
Anti clockwise viewed from above?.....
David
Yes.

Thanks!
D

RE: auto vs. manual ignition setting? - Steve Bryant - 05-10-2018

I'm not sure how successful this will be, but I modified my flywheel with timing marks in 5 degree increments so that timing can be assessed more easily against a pointer which will be attached to the crankcase.
   

Cheers,
Stephen

RE: auto vs. manual ignition setting? - jansens - 05-10-2018

Painted clutch springs! I thought I was pedantic getting things looking nice Smile

Simon

RE: auto vs. manual ignition setting? - Steve Bryant - 05-10-2018

It's away to differentiate the clutch springs from the valve springs which I don't paint....plus it looks nice !
Stephen