I really can't understand why you would consider a cut down 13 B e-shaft for
aviation use !!? For proof of concept, such as Richard Sohn is doing, that
is fine.
Would I use a cut down e-shaft  - no way!!
For example, the Mazda shafts are a very common material which will only
take Induction hardening, I assume you intend to re harden the areas
modified - do you have reliable induction hardening available locally, does
the new hardening have any effect on the previous  hardened areas!!??
What do you do with all those extra holes, as well as the new ones you have
to drill.
Your a far braver man than me if you would fly with a modified shaft!
George ( down under)

Where are you getting that stuff from George? :)

There is absolutely nothing wrong with cutting down
an e-shaft. It can be re hardened if necessary.
The size is way overkill for a one rotor therefore
the stress is very very VERY low. the same main and rotor
journal sizes are used on the 900 HP four rotor.

> Paul Lamar

If you're taking your power off the flywheel end of the shaft, the only
thing that the other end of a single-rotor e-shaft does is provide
alignment stability and hold the pulley which feeds the accessory pack
(water pump, alternator, etc).  VERY low stress stuff.

Keith


Right on Keith.

Paul Lamar ...No rotor no motor.

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