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Doppler For Dummies, Like Me

Old 08-29-2010, 01:39 AM
  #26  
spitfire
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Originally Posted by CHELLIE View Post
Here are the Awards that are Available

must... light... the fires!!!

maybe this 28 incher that I am building will make it to 100mph...

Spit.
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Old 08-31-2010, 11:51 PM
  #27  
iflyrc1012
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at my field we measure speed by crowd reaction
1)BOORRRING 0-55 mph
2)HOW LONG YOU BEEN FLYIN TRAINERS SON? 56-100 MPH
3)THAT'S NEVER GONNA SLOW DOWN ENOUGH TO LAND ON THE RUNWAY,
YOUR SCREWED 101-125MPH
4)ARE YOU OUT OF YOUR MIND FLYING THAT THING HERE??? 126-??
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Old 09-01-2010, 12:07 AM
  #28  
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Lol I like #3 the best.
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Old 09-01-2010, 06:53 AM
  #29  
Octavius
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I'm still trying to decide if I should take my speed plane to the club field. It's electric after 8am and fuel after 9am. I get the feeling it's going to be #4 and they're going to make a new rule if I fly before 9am.
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Old 09-01-2010, 07:10 AM
  #30  
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Originally Posted by Octavius View Post
I'm still trying to decide if I should take my speed plane to the club field. It's electric after 8am and fuel after 9am. I get the feeling it's going to be #4 and they're going to make a new rule if I fly before 9am.
Just get a recording of a glow motor and play it on your electric plane, even better yet, gut out a glow enging and but a electric motor in it, they will never know the difference LOL
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Old 09-01-2010, 01:21 PM
  #31  
Lieutenant Loughead
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Wait -- so are you telling me that electric power is only allowed at your field for one hour per day?
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Old 09-01-2010, 11:01 PM
  #32  
iflyrc1012
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Lt.
no,,,, its not 1 hour only, its 1 hour more because electric is quiet!!! the glow crowd isn't allowed to crank up their slimers until 9 am, electrics can fly at 8 am!!!
Same way at my field.....

Octavius,
I've had rules written JUST FOR ME at my club field, but I feel that when you push
the envelope as much as i do, you just have to expect resistance from those who
either don't understand what I'm trying to accomplish or those who are just set in their ways and don't want anyone else to go faster,fly higher or bigger planes or
longer flight times or night flying or whatever. To all those (mostly older but not all gentlemen) i say this.......
"if the way i fly or what i fly bothers you, then that's YOUR PROBLEM, as long as i am doing what i do SAFELY and within the rules of the A.M.A. AND the club. I have no desire to talk about it with you, either at the field or at a club meeting. So go have your little coffee clutch at the benches and leave the flying to me."
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Old 09-04-2010, 03:32 AM
  #33  
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Originally Posted by iflyrc1012 View Post
at my field we measure speed by crowd reaction
1)BOORRRING 0-55 mph
2)HOW LONG YOU BEEN FLYIN TRAINERS SON? 56-100 MPH
3)THAT'S NEVER GONNA SLOW DOWN ENOUGH TO LAND ON THE RUNWAY,
YOUR SCREWED 101-125MPH
4)ARE YOU OUT OF YOUR MIND FLYING THAT THING HERE??? 126-??
Everybody lands when I go to the boxes.
They tried to tell me to slow it down, then they told me to cut the noise a little, so I went from allmost 40,000 rpm to 22,000 rpm and they still all come down to Earth for me to go up. Thats why I like flying at the private field in my videos. Nobody around to tell ya anything !!!!
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Old 09-04-2010, 03:54 AM
  #34  
iflyrc1012
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mopar,
unfortunately for me, i live in n.y.c.so airspace is scarce to say the least, no private airfields here. so i just fly with a few buddys, and when the field is packed with those who want to fly trainers until they die, well i just fire up the stryker or f-5 and scare the heck outta them with low inverted passes and speed runs downwind!!!!! LOL!!!
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Old 09-12-2010, 07:38 AM
  #35  
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Originally Posted by iflyrc1012 View Post
mopar,
unfortunately for me, i live in n.y.c.so airspace is scarce to say the least, no private airfields here. so i just fly with a few buddys, and when the field is packed with those who want to fly trainers until they die, well i just fire up the stryker or f-5 and scare the heck outta them with low inverted passes and speed runs downwind!!!!! LOL!!!
I work in NYC
Where do you fly ??
Are you on any other forums that allow PM's ???
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Old 10-24-2010, 06:30 PM
  #36  
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Why not just do a time/distance = speed course?

Get a 100' tape measure and use your watch's stop watch function.

- Stopwatch stands in the EXACT same spot every time.
- Two people measure out a course using points of reference in the back ground that the stopwatch user uses as a start and stop point.
- Pilot flies over center of runway each run.
- Stopwatch user starts when plane passes reference point 1 (tree, telephone pole, etc.) and stops when plane passess end reference point 2.
- The rest is math. Time over distance equals speed.
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Old 10-30-2010, 01:03 AM
  #37  
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Wow this is neet, Thank you Neonbjb for Sharing this Awesome Program, Take care, Chellie

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New doppler speedometer application for windows and android!
I recently created an app for Android smart phones that automatically finds airplane speeds and announces them while you are flying, and I wanted to start a thread on it for input, suggestions, etc.

http://www.wattflyer.com/forums/showthread.php?t=58662

Features:
- Detects speeds for any electric plane that has a high RPM prop or fan, ie pretty much any pusher, pylon racer, or EDF.
- Announces speeds through the phones navigation voice as they are detected.
- Automatically detects the temperature of your local field using GPS and weather reports for maximum doppler accuracy.
- Records last 10 speeds, and displays last speed and highest speed in big letters on the screen.

Here's a video of the app in action:

RC Speedo for Android Demo


I also decided to do the community a favor and port something that is basically the same as the android app onto the PC, so anyone with a windows computer can use my software to doppler their planes much easier. I'm hoping this will make everyone's life easier, especially those who don't know how to do doppler analysis using wave-o-scope. For the PC app all you'll need is a youtube video or an MP3 or WAV sound file of a plane making it's flight. The program will play the sound file back and will report any speeds it can find in it with the click of a button. This version definitely still needs a little work so check back for some updates, I'll announce them as they come in this thread.

I've made a simple site that describes both these apps a little better where you can also download the PC app: http://www.rcspeedo.info

Last edited by CHELLIE; 10-30-2010 at 01:18 AM.
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Old 10-30-2010, 01:15 AM
  #38  
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If you like the above Program, Please dont Hesitate to Donate at http://www.rcspeedo.info IMHO
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Old 11-05-2011, 10:07 PM
  #39  
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Sorry if this is a dumb question but besides the fact that lipos don't like to be cold does anyone know how speed would be affected flying in cold weather? I was flying the other day and the air temp was 25f and a couple of planes didn't appear to have near the zip they did earlier this Summer.
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Old 11-06-2011, 06:56 AM
  #40  
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Originally Posted by MNMadman View Post
Sorry if this is a dumb question but besides the fact that lipos don't like to be cold does anyone know how speed would be affected flying in cold weather? I was flying the other day and the air temp was 25f and a couple of planes didn't appear to have near the zip they did earlier this Summer.
Hi, Your right, Me and Lipos Hate cold Weather put the lipos in your Pocket to keep them warm before using, also the cold thick dence air will slow you down too, there are no more dumb question, Because i already asked all the dumb questions Take care, Chellie
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Old 11-06-2011, 02:10 PM
  #41  
iflyrc1012
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i agree with Chellie. Cold air is more dense therefore will take a few m.p.h. off your top end, but colder air also provides more lift, so you plane will break ground with a shorter takeoff run than you are normally used to.... also colder air keeps the bugs at bay so i'll fly in 40 degrees anytime!! just get yourself a transmitter glove from H.K. and a glove heater $25 and winter is now your best flying season!! flying off snow is also a lot of fun if you happen to have a flying boat like a Seawind or a Catalina!!
i can't wait for the runway to get covered with a few inches of the white stuff!!!
We here in n.y. have already had our first snowstorm, 3 inches... but it was 60 degrees the next day,and it all melted.
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Old 02-04-2012, 12:17 AM
  #42  
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Thanks Chellie, That's cool, We used to use doppler shift to track underwater targets on sonar.
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Old 02-05-2012, 08:27 AM
  #43  
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Originally Posted by jim2wright View Post
Thanks Chellie, That's cool, We used to use doppler shift to track underwater targets on sonar.
Your very welcome Always Glad to help if i can, Take care and have fun Flying, Chellie
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Old 03-21-2012, 05:32 PM
  #44  
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Awesome thread ! .... and waaaaaaaaay cheaper than a radar gun !!!

Thanks Chellie !
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Old 05-16-2012, 12:31 AM
  #45  
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If you are decide as Doppler for dummies purchase that are used as anyone know how speed would be affected flying in cold weather. You are also speed of air senses fly. I am interested that instrument use.
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Old 09-01-2013, 12:48 AM
  #46  
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I downloaded the hobby King version to my phone seems to work well. I was testing it on my F4F wildcat depending on the battery used I was getting readings from 50.8 to 59 MPH. This was flying in high humidity and wind.
Tough to get a reading it was a cross wind at the field today. Trying to line up with the runway and keeping it centered was a bugger to do. Plus this plane is not the nosiest plane to get a Doppler reading on. Had to get it close to me as I had the phone mounted to my waist and then account for a cross wind. Seems I was working Darwin theory a few too many times if you get my drift.

Hope someone is down at the club so they can hold the phone while I fly my Cat's Meow. It is a Delta wing wgts. 14 oz.. and the power system puts out 248 watts. Like to see what the speed is.
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