Ed/Charo,

If you would like to build a 3.17:1 box and use
the rear planet one trick is to EDM out the roll pins
holding the six planet shafts in and replace them with
hard shoulder bolts. Then screw the shoulder bolts into
a flange on the prop shaft. Makes a real elegant box.

This will work on the front planetary too if you wish 2.85:1.

I am leaning towards a splined prop flange held on with a large nut.
A lot like a Merlin. Fits a hollow prop shaft well.

---------------------------

Better picture of the Merlin prop shaft.

Easy to install needle rollers. Also easy to take
apart and inspect everything.

Also hundreds of Ross boxes used rollers so a separate oil
supply is no big deal. No hot high pressure oil from the engine
required.


Paul Lamar


Yes, that is my favorite design, with the bolts replacing the planet pins. I
intended to get back with you on this in the future after getting the damper
done. There are many automotive wheel spindles that use splined through
bolts to hold them in the hub. I was considering that myself. It just seems
safer than using 6 or 8 bolts.

As I jested at Whitman last time you were there, I don't know how my wife's
name became the title name on my email. Gmail must have done it
automatically when we used one of my wifes email address's as backup.

You should wait till the parts arrive before sending a check, they might be
damaged in route.

Ed Carver

OK Ed.

Yes charo carver is probably the  name used on your account.
When I send a reply that comes up automatically.
Kind of confusing.

Paul Lamar