Originally Posted by
Pond Skipper
Hi Dave well done ya did it thank for sharing and with practice you will be doing great passes right by the cam.
The first vid
In the hand right at launch 17.1k static
In the air best pass 22.87k if with a 5x4 prop 87 mph potential with slip at least 76 mph.
If it was a 5x3 prop 65 mph with slip perhaps 56 mph.
17K static - that seems pitiful; may have said it before but I remember a modeler years ago telling me "if the Tee Dee doesn't turn 18K out of the box, you throw it away and buy a new one..."
I have a tach - just lazy about using it I guess.
It was a 5X4 prop - being human and favoring exaggeration would like to think its going faster than 70 mph but with a realistic attitude, find it hard to believe.
I haven't researched your entries in-depth in this sub-forum recently but I remember you're somehow able to use Doppler Effect to acquire groundspeeds - is this correct?
What is slip?
Do you use any particular telephoto setting (zoom) beyond default on your hat cam?