Quinten, find me a good / new one and I'll buy it!
The ET rotor is a normal pattern rotor with dowel holes.
Buy a new normal rotor .
And drill the ET dowels holes on the back face .
The holes are located around the magnetic neutral area ... 60Â° offset from the magnetic centers .
In the soft aluminum potting .(safe and easy drilling )
The magnetic centers and neutral centers can also be indexed off of the broached key
Which is centered on a magnetic north magnet .
The poles alternate north , south, north , south ...around the circumference .
The holes are drilled in the neutral area between a north and south magnet... not a south and north magnet .
My measurements show
The ( S )hole is 2Â° off magnetic center , biased towards the south magnet
The ( M ) hole is on magnetic neutral center
The ( R ) hole is 2Â° off magnetic center , biased towards the north magnet
Or indexed off the center hole Broach ... as zero degees ... and using a rotary table .
The ( S ) is 32Â° ... clockwise
The ( M ) is 150Â°
The ( R ) is 268Â°
I never got as far as actual table indexing , i went a different path
these are just the numbers i came up with from eyeballing the problem.
Preliminary numbers... so dont take these to the bank .