quote:

ORIGINAL: bart4u

jzrf6c I don't have money to burn. My motor was completely useless and there were no usable parts. The motor was a bit larger then the Eflite 32 and is built to be used in large planes. I would never risk using this motor again on a plane the size of the Eratix. Like I said before the cost to shipping it back would almost be the cost of the motor. No reason for me to keep the piece of junk. I have a number of Turnigy motors for my small foam planes and they work fine, I just don't trust their large motors.

Not quite sure what’s going on with my model at the moment. Going great but
using a z3025 08 Hyperion, pulling 42 amps max (reading could be dubious) with 11x5.5  I'm only getting 9.48 minutes before dead stick from 3300mah 4cell. Some people seem to be saying 10 minutes and then only replacing 2200mah. HHHHhhhhhmmmmmmm.
Models 4 pound (1800grams) with suggested servos and 500mah 3cell flight pac.

Battery and motor both near cold.

Ok well I reported a flat battery at 9.48 minutes based on the motor shutting down and doing a dead stick landing - however, when I charged the battery I only put 2280mah in, not 3300 so I'm going to change out the speed control and install an 80A OPTO V3.1.
To be quite honest I have no idea what the current speed control is (hard to believe but true.)

I'll hopefully get to try this tomorrow morning and see if that works better.
Cheers

Turns out speed control was castle creations Phonix-125

Replaced the speed control and flew this morning. No glitches.
Two flights
just stooging around, few vertical climbs, bit of hovering, lots of loops and cuban eights etc
great

flight one, throttle on time only.           10 minutes 37 seconds 2770mah = average 15.65 amps

seconds flight, total time actually in the air.       14minutes45 seconds 2727mah = average 11.09 amps

And both flights left about 20% battery in reserve. (if my calcs are wrong please let me know before I crash )  Plane has tons of performance.
I can certainly live with those figures and my goal was actual time in the sky flights of 10 minutes before charging. Accomplished

Cheers
Glen

quote:

ORIGINAL: jmir

I use an Eflite Power 32 with a 14 X 7 prop and a 2650mah 4-cell lipo. I can fly around 10 minutes with this set up.
I do fly at 1/2 throttle most of the time. Only time I go higher than that is when getting out of hovers, knife edge loops, and fast climbs.
I usually replace about 1400 mah when recharging.

]

Average of just 8.4 amps for a 3D 4 pound plane. That’s impressive
you obviously have a motor better suited to the task than mine. No money in my kitty for that upgrade though unfortunately.

 Some interesting numbers

8min35s 1599mah (hyp 35c 4cell 2200mah)
8min58s 1930mah (hyp 35c 4cell 2200mah)

There was a lot of throttle conservation but it was loops, rolls, cuban eights, inverted flat spin with at least a couple of big verticals and several hovers. Both batteries would hold a hover just before landing. That’s impressive. The plane does weigh 4 pound. Things have come a long way in just a few years. And they say the new ZS Hyperion motor is 10% better than the one I’m using.

I’m going to enjoy this plane. Flying casually I can charge and fly two small batteries continuously but still have the planes 4C 3300mah for showing off. (not that I would or could for that matter!)