The aluminum billet version was getting expensive.
The material alone was $66. I know I just bought some today.
I had to pay $16 just to have it cut to lenght.

Then I was having trouble finding suitable 10 mm 1 mm pitch metric screws.
I never found any I was completely satisfied with. Making our own was
getting expensive.

The welded version can use the stock 10 mm 1 mm pitch bolts
as it is only .125 thick which can replace the stock clamping plate

The light really went on when I thought of welding the walls directly to the
steel spline plate.

No bolts or screws needed to bolt the spline plate to the coupling.
The spline plate is half the coupling.

Nothing could be easier or simpler.

The walls are rectangular .75" by 1.5" 4130 tubing from Aircraft Spruce.
I have some in stock.


There must be only three walls because there are six 10 mm bolts.


Here is what it looks like. It fits the stock 2 rotor flex plate but does
not stress it. All torque is transmitted by the six 10 MM bolts.


I will weld one up and send it to you for testing Mark.

Paul Lamar