Please,can someone answer,which one battery (lipo) I need for 4-to 5 minutes of flight? or formula for calculation? My aerobatic extra 330 l 58'', is 2600 g without battery and props is 14x7 and 15x7.I would like to know an average value,because I will fly with no max load.Thanks in advance.
Lipo amp.teilen durch Motoramp. mal 60.
Bsp. Du hast einen Lipo mit 4000maH=4.0A und einen Motor wo 50 a zieht dann teilst du 4.0:50=0,08x60=4,8min. 60=min Dann ziehst du noch 10% ab da du ja im stand deinen Motor gemessen hast O.K
According to motorcalc this setup will be nearer 65amps which will overheat the motor and esc,a 16 x 7 or a 15 x 9 will give virtually identical results.Just out of interest an 8s pack on a 13 x 8 would give over 1600 watts at 57amps.
Motocalc is a starting point...empirecal results are better...the motor will pull more than 60 amps without overheating. All my Turnigy's have VERY conservative current limit in the specs. The 580kv version of this motor draws 90 amps for short periods, on 5 cell A-Spec with 15x8 apc-e, nearly 2000 watts. Rating is 1500 watts. Fluffy11****get a few differnt props if you try this motor on 6 cell. 16 inch 15 inch and 14 inch
Ive à* 4 kg 1m60 Yak 54. I would like to use 6S cell and be able to make 3D. I need something like 1200 W. And i don't want to use to many Amp (50/60 max), you think this motor is the good one ? Or which one would be fine ?? Thks for help !
well 1200 Watts can give you about 5 to 6 kg of thrust, I think. So it can work. But this motor has a low KV, rpm. You will have to use a 15 or even 16 inch propeller, to give you that power on 22 volts.
So have a look at your landing gear and the space it offers.
So one ends up -at last- with this motor and some smal rebate in one's cart... Yep.. I'd decided this motor to be the best for its task, and to buy this thing... So Payment time? Well totally NOPE!!! Wham... rebate motor gone out of cart! Gone rebate! What's new HK????
Internal resistance 0,3 Ohm? According to eCalc.ch a dog of a motor... When 0,03 Ohm... should perform fractonaly better than the Skorpion S4020-16! That whould be good news!
So can we trust the data we get? HK, please check and correct if needed.
what diameter is the back of the motor where the prop adapter bolts on and bolt pattern please.
Well... shipment was very speedy! Thanks HK!
Motor looks robust and realy neat. Weigt is 288 grams. Neat too!
Large vents in the design will help to keep things nicely cool.
Turnigy packaging is plain industrial blunt cardboard. Regard alu prop axles as prone to weaknesses, and have a heavier steel one to mount. All in package is okay. Spinnernuts can be use on a OS or Saito :-). When this motor does what HK/Turnigy promises? Than it is a winner!
Will check magnets for glueing (but even AXI needs to be checked!).
So 5* at first glance, without testing.
3 comments. Reply..
Tested the Motor and it's not really a replacement for the PRODUCT ID: TR50-55A-400.
Its KV seems to be lower. The "old" 50-55A spins the same prop (15x8) to ~8200rpm (6s ~36A) and this motor does 7300 max (6s ~22A). (Don't remember the exact numbers, just tested to compare the two motors)
So a bigger prop is needed to achieve the same thrust/power. Will do further tests with 16x8 on 6s. Can post the exact numbers if needed after that tests.
Have purchased 9 of these motors for a big octocopter.
Unfortunately, the bearings get very hot if run at 12 k RPM. Likely needed to be replaced, but could not find replacement or high-quality bearings.
Fixing screw for the shaft is too short and breaks winding inside aluminium piece at the front easily, fixing screw is only 3 mm and way too short, replaced all of them.
Propeller holder for non-shaft side wobbles a lot.
Could not find replacement shafts.
Wondering if HK has better quality motors with same performance / KV.