When you have time,could you try to pull doppler of this.There may ne one or 2 decent passes.Diamond Dust convertion...Thanks Don!Joe Dont know why,but lately,posting a video from youtube is choppy here,you have to click on "youtube"at bottom of video that takes you right to the page and its smooth...

Diamond Dust.MOV (3 min 38 sec)

Originally Posted by corsair nut

84 deg.

i think its the second video..

rpm would be nice to know, 5 blades

thanks don!!!

151 mph, rpm= 34566

Originally Posted by fh64_lucky

When you have time,could you try to pull doppler of this.There may ne one or 2 decent passes.Diamond Dust convertion...Thanks Don!Joe Dont know why,but lately,posting a video from youtube is choppy here,you have to click on "youtube"at bottom of video that takes you right to the page and its smooth...

I got three passes at 143 mph assuming air temp of 77F

Thanks Don!I need to bump it up some I guess..... It was 85 degrees out but thats close enough...its a pretty reliable setup.

Hi Don.

I dont know if any pass is ok to doppler, but the one at 5:40 is one of the best....did not think of the option to doppler, until after the flight, so the flybyes is probably to short.

MagnusEL Ryggskott "Monster Setup", Mohed (7 min 5 sec)

Scorpion HK3026-1000 with 10x6 RAM propp (glow!), 6s 3300 20-30C Old Zippy-H 92A and ~2000W

Temp was 18 degreeCelcius

88 mph at 5:40 Too many throttle chops you nee to hold throttle longer and fly flat and level.

Thanks Don. Thats what I get with RC Speedo , well 87mph.
@ 2:12 I get the fastest pass, 114 mph.

As I said, I did not have doppler in my mind at the time...
Ill do better next time!

Thanks again!

Oklahoma Dust Bowl 2011 - Ralphs super fast Sundowner (1 min 44 sec)

Temp was about 80 degrees

crap i forgot to check back to this thread! :O thanks don!

Originally Posted by The Don

151 mph, rpm= 34566

I did some runs today on "RC_SPEEDO" but failed to set the correct temperature! im wondering what error this would play in the calculation... the program was set at 37C but it was realy 21C. any way to calculate the actual measured speeds?

Hey Don-

Could you compare these RCSpeedo reading with your Doppler abilities?

Thanks man..

Jeff

RCSpeedo versus Doppler video. (3 min 6 sec)

That sucker was scootin!

Well, it's only a 20" span, so it looks faster than it is..

I was gonna make fun of it,but in video,you look bigger than me,so I wont say a word.......
And even for its small size,it is moving well!

Originally Posted by Tram

Hey Don-

Could you compare these RCSpeedo reading with your Doppler abilities?

Thanks man..

Jeff

What was your air temperature? BY the way I have done this myself as as long as you make good doppler passes like you are doing and you make sure the RCSpeedo app has the correct air temperature (I manually enter the value in). I have found the app to doppler within 1 mph of what I get manually

Don