wrote:

Juan Jimenez wrote:

wrote in message
roups.com...

There are no BD-4J's. It's a BD-5J. The 022 Couguar weighs 68 lbs soaking
wet. It has no starter/generator.


Hmm, shifts the CG forward a tad reducing the counterweight
needed up front, and thereby the total weight by a bit more too,
right? Or don't the 5js need a forward counterweight.


How hard is it to start the engine?

Not hard at all. Ignition on, fuel pump on, 145 psi, wait for 11-13% N1,
fuel solenoid valve on, light off.



OK, what's 'N1'?

And what happens next after 'light off'?

N1 is turbine one in a two spool engine, N2 would be spool 2. He's
using the term to impress us since his motor is single spool. I think he
means "light off" as "turn the lights off so the fire department won't
be distracted when they come to put out the fire."

Dan, U.S. Air Force, retired