Fun testing

[peter_a]

It`s my first move into quad/hex copter or really electric flight from grow plug motors.
Just doing a little testing ( Time wasting )  while my bit`s come via a very slow boat from china. 
Connected a Turnigy d3536/8 1000kv motor / HobbyKing 30A BlueSeries ( Simonk ) / 3 cell Lipo and used a prop off one of my aircraft , 11 x 4.5 .
The motor says rating 30A , so connected a amp meter and give it a workout !!!!!
It full blast , with lots of thrust there , plus never got more than 17 amps. ( and moves every bit of paper from my bench )

Wow , I think I know why people have moved to electric flight, and now just remembered rule 1 of glow motors , don`t put your finger(s) in the prop !!!!

[rickp]

One lesson I learnt early on was to be bloody careful when programming via USB with props on and lipo connected. I caused the APM to crash, and all motors suddenly came on. 1 sliced finger later...
I now take the props off and use a current limited power supply in place of the lipo if I need to spin the motors... Feel free to be less of a muppet than me :)

[XH558]

I am building a 1/10th scale Spitfire - long term project .... 2 nights ago I got to the point where you get to test the motor in situ with it';s new prop driver and hefty 11" prop.... all connected up ... ammeter in the line to see the amps and watts ....  slowly increase the throttle .... nice sound ... everything looking good ... increase the throttle... pointing down the workshop as I';ve been here before - I';ve had props come off etc  ....then I tried a few seconds of full chat to see the amps ... 25 amps ....very pleased at that ............... then suddenly the motor mounts fail and the whole motor disc rips out and the motor - prop - spinner and mounts shoot up the workshop and hit the door with a thump .... fortunately the esc is attached with 3 plugs and sockets so it very thoughtfully unplugged itself as it left the fuselage 

Oh well - back to the drawing board   

[peter_a]

Rule 2 , If you think it`s solid ? , use bigger screws until your sure.

But I have tendency to over build things , which is not a good thing when weight is a limiting factor .

I made a 4 wheel box trailer ( Steel and plywood ) which broke free while towing it out of the drive on a rigid pole , it shot down the drive and hit the next door`s brick wall knocking it down , but chipped a little paint off the trailer.
That`s my normal level of over kill !!! , I think my idea job would be building tanks , very heavily tanks.