So I got the Tacon motor in the 71" Slick ready to go. Just waiting on the weather now.
Before I put it in the plane I did some prop, and Esc testing. I mounted it on my bench engine tester and got out the watt meter.
I used both the ZTW Gecko 120A HV as well as the YEP 120 HV esc's. There seemed to be very little difference in the watts and amps used for each prop tested with each speed controller. I did have some screeching going on with the YEP when I advanced the throttle too fast but I think I can adjust that out with the YGE prog card. I just did a quick setup to get the esc working with the motor and probably haven't found the correct timing, start up speed, or other settings yet.
I had good luck with the ZTW despite what some have mentioned on other forums. I also have a ZTW esc on my 60" EF Laser that so far is working good with the Torque motor in it.
I then mounted the original DLE 30cc engine with the Pitts style muffler on the bench and did the same test with the same props. Minus the watt meter.
Here are the results I got.
The Turnigy batteries were brand new, these were the first cycles on them. I know, I know, not exactly how you should break in batteries. But I am very impatient and totally bored going nuts waiting for better flying weather.
The numbers all came from full throttle of course.
Tacon Bigfoot 110 5325-295 KV motor
4s Turnigy 4000mAh 40C Lipo packs running in series for 8s.
ZTW Gecko 120A HV ESC
PROP-----------------------------RPM / AMPS / WATTS
Falcon 20x8----------------------6900 / 112.6 / 3137
Top Flite power point 20x8----7050 / 100.9 / 2816
Xoar 20x6-------------------------7380 / 94.1 / 2686
Xoar 19x8 painted---------------7650 / 102 / 3089
Xoar 19x8 laminated------------7550 / 98.8 / 2994
Top Flite power point 18x12---7400 / 99.8 / 2956
Top Flite Super M 18x8------- -7850 / 80 / 2355
Top Flite power point 18x6----8070 / 74.3 / 2265
Zinger 18x6-10------------------7650 / 94.7 / 2863
DLE 30 cc gasoline with B.C.M. pitts style muffler. Same exact props. 22 degree weather. 800 ft. above sea level. Reg. non-eth. Gas with Pennzoil 50:1 mixture.
PROP-----------------------------RPM
Falcon 20x8---------------------6510
Top Flite power point 20x8---6120
Xoar 20x6------------------------7200
Xoar 19x8 painted--------------6930
Xoar 19x8 laminated-----------7110
Top Flite power point 18x12--6780
Top Flite Super M 18x8--------7950
Top Flite power point 18x6----8550
Zinger 18x6-10------------------7290
Mejzlik carbon fiber 18x6------9120
Tacon 110 Bigfoot motor specs.
Model #: 96M607-Bigfoot-110-295Kv
Weight: 480g
Input Watts: 2000W
Outside Diameter 62.8mm
Length 54mm
No. of cells (Lipo) 14
Max Efficiency 93%
Max Efficiency current 68
No Load Current(A) 7.4V 1.2
Internal Resistance: .0.041 ohms
Shaft Diameter 8 mm
Shaft Length 20 mm
KV (RPM/Volt) 295KV
Turns (for cars) Poles 9
Max Voltage 55
Wire Size 0.25
Bullet Connectors Yes
Bullet Connectors Size 4.0 mm
So based on what the specs of the motor are. Will I be pushing it by running the motor over 68 amps with 19 or 20 inch props if only for short bursts during typical 3D and lazy sport flying?
I also have 6s packs that I could run in either series or parallel but I haven't tried running the numbers on 6s or 12s with these props yet.
Maybe I'll give that a shot for shits and grins just to see what happens unless all you people with much more sense than I have don't think it would work too well.
Am I right in thinking that the kv of the motor really isn't optimal for 6 or 12s?
Anyway just thought I'd share what I came up with.
