[ARC5] Bendix RA-1B receiver

[Fernando - LU2DFM]

Hi.
On Tue, May 13, 2014 at 02:05:40PM -0400, Roy Morgan wrote:
> 
>  The switch SHORTS OUT the selected magneto.  So, if you put the switch in position 1, and the engine RPM falls more than the allowed amount, it means that magneto 2, or some of it’s spark plugs are not working well enough to reliably run the engine if the other one fails.  Aircraft engines have two spark plugs per cylinder for (at least) two reasons: to allow for continued operation if one magneto fails, and to ignite the fuel/air mixture under normal conditions in a better way.
>  Putting the switch in the BOTH position should cut out the engine altogether. This is done VERY briefly to avoid blowing off the exhaust stacks from extra fuel.  

Pardon my ignorance: since the BOTH position grounds both magnetos, its
derived from there that the OFF position is where the engine runs with
both magnetos active, so both spark plug in each cilinder is firing?

Looks _very_ anti-intuitive :)

Regards,

-- 
73 de Fer, LU2DFM