Before I put the FMS PC-21 Pilatus together, I just had to take that big 10x7 5 Bladed Prop for a spin on The Judge. No big surprises--but the sound of that prop is very unique.
lol I would have bet on you doing it its in you to test lol And I totally agree on ESC it sad hen they bring them to edge of fail 50 amp more then enough Take Care john great video
You're welcome. I know bench tests aren't as exciting as flying or planes, but this is good information to have documented. The plane seems popular so it's good info to have out there.
I agree with you. Static and Dynamic are quite different, but headroom is headroom. A little headroom is always usefully needed. My 4s 3D Pitts came with a 50a ESC. Long story short, it now uses a Mantis 65a/5.5v SBEC ESC. A little larger ESC, no matter what, never hurts a thing. AirHammer out!!
It's surprising how inexpensive some of the replacement motors can be. I think the Hobbyking EfXtra replacement motor is dirt cheap and that little sucker screams.
I know this video is over a year old.. Did anyone ever test this motor and prop combination with 5 Cell battery? My tests show just over 58A and 1050W at static wide open throttle.. I doubt this motor would take that constantly but for short bursts (10-15 seconds) should be OK??
I haven't yet. Since it's mounted on the stand, I may as well go ahead and do that. FYI: I believe the primary issue with those spinners is the backplate being out of round. I'll let you know what I find out.
The only way to know is to put it on a watt meter. My suspicion--especially if you used this 5 blade prop--is 5s would be too much. The only way to know is to test though.
I just got the Pilatus :-) On 4s I got a similar number to John's, with a peak of 44.6 amps. On a 5s battery it peaked at 58.9 amps. Will the motor handle this? There are no ratings available but comments on RCGroups suggest it will so I plan to give 5s a try with an upgraded ESC. As long as the throttle is moderated and only hit full on for short periods I expect it will be OK.
Probably not. 1) As a 5 bladed prop, it would take something with at least 3" more diameter to produce a 2 bladed equivalent which wouldn't work on this airframe. 2) I really really like the way this 5 bladed prop sounds on the plane. 3) I would have to disassemble the plane to put the motor back on the test stand. What are you trying to figure out?
@@RCVideoReviews Thanks alot for taking time to answer, i was curious about the efficiancy aspect. I was just curious about what sort of a performance drop the increased blade nummer was caising... it sounds great though :) (PS: I am just a newbie starting the hobby . Sources like www.drivecalc.de abit too complicated for me to grasp the mechanics of propellers )
![FMS PC-21 Pilatus 3541 750kv Brushless Motor Bench Test [The Judge Ep. 7]](/img/logo.svg){kind=logo}
