51fixer wrote:
The one shown in your picture is the slave assy from the back seat.
In addition to lacking a push button knob, most all I have dealt with have that knob, it also lacks the parts to adjust the tension of the levers.
The front seat guy in a T-6 and also in other single seat aircraft could adjust the tension on a pack of clutch plates and spacers on a shaft.
This allowed you to lock the power setting on take off, particularly of a cat launch. to avoid the throttle or prop lever from changing with acceleration. Also the ability to fine tune adjustment for formation flying was crucial.
Yes, but I know that they were used in the front and rear cockpits on the Yale, and I would assume on earlier North American models as well, such as the BT-9, BT-14, and early Harvards (ie Mk I and II, with the Mk II's being retrofitted with the knobs postwar).
Here's a shot from the Yale Operating Manual showing the front cockpit. Notice the throttle doesn't have the tension knob. (and it's in French

)

I purchased one of these throttle packs a little while ago on eBay for my Yale (the one I have is in pretty bad shape) so they do pop up from time to time.
I'll keep a look out!
