I finally got to run the motor in my new Cardinal profile based plane
Axi 2826/10, 4 cell 14.8v TT battery, CC Phoenix 45, ESC, Zigras timer

I set the ESC for :

Cell count             Auto Lip
Brake                   Hard cutoff
Throttle mode       Heli Governor High
Brake                  50% disabled
Brake ramp           immediate
Motor start           39%
Throttle response   Medium #5
Timing                  Standard
PWM frequency      13 Khz
Current limit           Normal
Governor gain         High 80%
Spool up speed       80%

Zigras timer settings:

Startup speed          35 = 70%
Ending speed           40 = 80%
3 Blips                    on
Motor start time       2   = 20seconds
Flight duration          5 1/2 minutes

battery fully charged , 11 x 5 Zinger wood prop

starts up OK, turns circa 9 K, for about 4 mins , drops gradually to 8 ish by 5 mins
NOW,........at 5 1/2 minutes blips non-stop until I switch off power, approx further 1 minute

Intend to try turning off the 3 blips at end next, but very puzzled, on re-charging the battery
all else seems normal,

could the ESC or the timer be doing this ?

Any suggestions please ?

Vincent

Many thanks for the reply Dean

I tried 12 x 6 APC  E prop
and 11 X 6 wood Zinger
rougly same rpms

Felt like the battery was not up to it
I will try your suggestions soon and report back

again a big thank you

Vincent

Also if you can, see if you can get the APC 11-5.5 Thin Electric propeller, I think it is more efficient than the thicker Zinger wood prop. Also you can look at what I use for my Electric Nobler (see thread), but I think your Cardinal profile is a larger plane,so it might need more power. I am using a 4 cell 2100 mAhr FMA battery (4s1p in Lipo terminology).

Some pix of the plane in question

Vincent

Vincent,
In governor mode, you are setting the rpm, so the motor will run that rpm even without a prop, but if you have a standard optical tach, a prop makes a convenient thing to put it on. The small prop that I suggested was just to allow you to run a complete cycle on the ground and see if the programming of the timer and ESC was what you expected--all without drawing too much current from the battery. You shouldn't ever run the full size prop for a full 6 minutes on the ground, it could damage the battery and overheat it, the ESC, and the motor---unless your power system is seriously oversized (=probably too heavy).

Great Vincent,
For closure ...
What is your battery capacity used per flight?
What's the lap time on 65 feet?
What is your % "throttle" on the Z-tron.
Please confirm which prop you are using: the 12-6E APC?

happy happy,
       Dean

Great Vincent,
For closure ...
What is your battery capacity used per flight?
Dont know Dean ! perhaps the charger tells me ?
What's the lap time on 65 feet?
Sorry , I have only one flight on 60'
What is your % "throttle" on the Z-tron.
27%
Please confirm which prop you are using: the 12-6E APC?
11x6 wood Zinger
happy happy,
       Dean
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