<VV> cylinder to cylinder timing variation

[djtcz at comcast.net]

The pairs of cylinders are separated by 120 degrees as referenced on the crank/damper.  With my light's 60 degree adjustability I'd only be able to read 1 pair at a time.
The 3 or 4 degree difference in sounds like the accuracy of the (toothed wheel ?) Pertronix device in the distributor.
Timing tape might be available to turn a Corvair damper into a degreed damper.
I've used regular non-stretchy masking tape to create timing tape to create multiple TDC marks on dampers.  Circumference / number of cylinders /2.  The distance between marks should be checked, and equal.
How steady is the timing?  Generally each cylinder contgrolled by my points controlled ignitions vary several degrees.  I've come to expect nearly rock-steady timing on electronically controlled ignition. 

--
Dan Timberlake

-------------- Original message -------------- 
Message: 3
Date: Sat, 21 Oct 2006 16:53:14 -0400
From: Padgett <pp2 at 6007.us>
Subject: <VV> Re: Just in time
To: virtualvairs at corvair.org
Message-ID: <5.2.0.9.2.20061021164611.01d04a48 at mail.bellsouth.net>
Content-Type: text/plain; charset="us-ascii"; format=flowed

With all of the discussion of timing connecting the light to different 
cylinders I got out the 30 yar old chrome Craftsman light with the advance 
dial and  tried different cylinders:
Cyl #1 timed at 14 degrees BTDC.
Cyl #6 could not find the mark  no how no way
Cyl #2 read 4 degrees retarded from #1 at 1500 rpm/ 3 degrees at 600 rpm 
(11 degrees BTDC)

This is a 66 110/PG, good distributor (checked out) , Pertronix II 
Flamethrower II so no points load on shaft and does not make a lot of 
sense. Has anyone seen this before ?

Padgett