What is the "centrifugal stop pin" on the seminole?

[Cav]

What is the \"centrifugal stop pin\" on the seminole?

My guess is it has something to do with prop feathering and engine shut down but I'm not sure. Obviously! Thanks in advance.

 

[Soonermurph]

Re: What is the \"centrifugal stop pin\" on the seminole?

If the prop is turning under 950 rpm, the pins slip into place and prevents feathering. This is handy at shutdown. It would put alot of stress on the engines if the props were feathered during startup.

 

[CFII2008]

Re: What is the "centrifugal stop pin" on the seminole?

Is this the same thing as a "prop lock?"

 

[Clocks]

Re: What is the "centrifugal stop pin" on the seminole?

Is this the same thing as a "prop lock?"

Prop lock

 

[Berkut]

Re: What is the "centrifugal stop pin" on the seminole?

Is this the same thing as a "prop lock?"

Some turboprop guys will refer to them as start locks or prop locks.

 

[Blip16]

Re: What is the "centrifugal stop pin" on the seminole?

i call them "anti-feathering pins" i think the POH does as well. at least for the Semi's i fly

 

[ftyflyboy]

Re: What is the \"centrifugal stop pin\" on the seminole?

If the prop is turning under 950 rpm, the pins slip into place and prevents feathering. This is handy at shutdown. It would put alot of stress on the engines if the props were feathered during startup.

Roger that!