Search: Posts Made By: OwenB
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01-15-2021, 11:30 PM
Replies: 4
Views: 3,049
Posted By OwenB

1) APC tables say the 9x5 is good for 16,000, and...

1) APC tables say the 9x5 is good for 16,000, and the power levels come straight from the tables. I suspect the prop tips may bend forward a bit under static load at 13,000 rpm.

Shaft power to...
01-15-2021, 07:14 AM
Replies: 4
Views: 3,049
Posted By OwenB

Smile I have settled on 9x4 props, 1300 KV motors. ...

I have settled on 9x4 props, 1300 KV motors.
Peak amps seems to be 128 A per prop, up from benchmarks of 58A, 4S
I am not too sure why this is so-maybe the inefficiencies of 3 motors add up?
...
01-14-2021, 08:13 AM
Replies: 4
Views: 3,049
Posted By OwenB

Here is a drawing for the three motor array. This...

Here is a drawing for the three motor array. This is probably easier for me than trying to rewind a different motor.
It is intended for a 9x7 two blade.
However, despite being a glass composite...
01-13-2021, 12:21 AM
Replies: 5,516
Views: 1,137,866
Posted By OwenB

Smile Hello from Owen!

I am a newbie to RC models in general - used to do free flight and control line when I was younger.
I am now retired from work.
I suppose I have the strong urge to go one better than in my youth,...
01-12-2021, 11:29 AM
Replies: 4
Views: 3,049
Posted By OwenB

Smile Instructions on brushless motor design.

This is a question, not a "How-to" - ? should be in the title.

I read the "Fly Electric" pages on DIY brushless motors, by David Theunissen, and I would like to find out more:
1) what are the...
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