Looking to switch timers to an FM9 that I have had laying around for a while. Seems I misplaced the program manual. I have the program box but need a copy of the manual, anyone have a scanned copy they could post or PM me?

Thanks,     DennisT

OK, I got the FM9 programing instructions (attached) from Will H (thanks again). Has anyone used the FM9 as just a motor start delay and flight timer letting the ESC (in my case the CC Talon 35) in Control Line mode, Fixed RPM control the motor RPM?

Best,  DennisT

I am trying to figure out why you would want to put the RPM in the hands of a CC ESC that needs a computer to program when it is so easy to manage with the FM-9 programming box.  I am sure there is a reason, I just can't figure it out.

Ken

Have you considered the FM-9oc with pots for RPM?

Ken

Dennis,
Look into the Climb and Dive timer here in Gettin all Amped up.

Dennis T
I exclusively use Castle ESC's in "Set RPM" Mode.  When using the FM-9 go to the Phoenix Set RPM menu and it will ask you to select either RPM #1 (lowest RPM programed) # 2, or #3 (highest RPM programmed).  I try to set the middle RPM as the "preferred" speed with the others set +100 and -100 RPM versus the middle setting.  This gives a little room to adjust for conditions - which I rarely do!  RPM adjustments are easy, and in exact increments, 100 RPM is a significant change.

KC asked Why Use Set RPM?  Because it is the smoothest/fastest acting in governance.  RPM graphs show fewer/smaller peaks and valleys in RPM.  I notice the motor seems smoother, and have measured a consistent 150 mah reduction in battery usage which I attribute to smoother RPM control.  Other payoffs include it self adjust to motor to motor differences in kV.  That recently proved handy when I switched out a motor for balance purposes - the new RPM matched the old RPM - EXACTLY.

Primary disadvantage is that you need to reprogram if your set-up requires a new RPM higher or lower than the 3 you have programmed. That's what 1 minute test flights are for!  If I am using a prop I know then the correct RPM settings can be found pretty fast.  If I am testing a brand new airplane with a never-used prop I will program the RPM in 200 RPM steps to expand the range, hopefully from a little too slow to a little too fast, then fine tune the range to 100 RPM steps. 

Of course for test flights you could use High Gov mode for quicker on-field RPM adjustment, then when you find one you like reprogram the Castle ESC to "Set RPM" to gain its advantages longer term.