Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Doppler reading on a Bocat please?

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Old 05-31-2009, 06:53 PM
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CrashPro
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Default Doppler reading on a Bocat please?



Hi Doppler wizards....can you please give me a reading on this Bobcat?......wind was about 5mph out of the north http://www.cvrcclubvideos.us/SDVids/BCDOP.wmv

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Old 05-31-2009, 07:58 PM
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Default RE: Doppler reading on a Bocat please?

Keep in mind that especially the first two passes were in a shallow dive.
Left to right 145 mph
Right to left 135 mph
Left to right, last pass 117 mph
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Old 05-31-2009, 08:00 PM
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Default RE: Doppler reading on a Bocat please?

Thanks Mike.....you rock!!
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Old 05-31-2009, 09:50 PM
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Default RE: Doppler reading on a Bocat please?

What engine are you using on that Bobcat? I had one and it was now where near that fast.

Thanks, Terry
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Old 05-31-2009, 10:28 PM
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Default RE: Doppler reading on a Bocat please?


ORIGINAL: still4given

What engine are you using on that Bobcat? I had one and it was now where near that fast.

Thanks, Terry


Hi Terry

OS 55AX is the engine.....and Ken cleaned the airframe up quite a bit too.... http://www.rcuniverse.com/forum/fb.asp?m=8786580
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Old 08-24-2009, 02:55 PM
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Default RE: Doppler reading on a Bocat please?

you can estimate a speed just from a video?
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Old 08-24-2009, 03:19 PM
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Default RE: Doppler reading on a Bocat please?

yep
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Old 08-24-2009, 03:25 PM
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Default RE: Doppler reading on a Bocat please?

is it pretty accurate? If i post a video can you give me a speed? i have a mini mach racer with an het 2-25 6x4 prop on 4 cells it goes pretty good!
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Old 08-24-2009, 05:09 PM
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Default RE: Doppler reading on a Bocat please?

It's pretty accurate. Post the vid and let's see if we can get something.
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Old 08-24-2009, 05:22 PM
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Default RE: Doppler reading on a Bocat please?

i'll have to take one this weekend.

Thanks
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