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 help

Reply

Old 01-05-2008, 10:00 PM
  #1  
5.0Rick
Member
Thread Starter
 
Join Date: Feb 2005
Location: Round Rock, TX
Posts: 38
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Doppler help

Hi guys,

Could someone please run my wave file through the doppler software and let me know what my speed is? Here is a link to the wave file: http://www.nomadflyers.org/gallery/m...?g2_itemId=837

Thanks a million.

Rick
5.0Rick is offline  
Reply With Quote
Old 01-05-2008, 11:42 PM
  #2  
5.0Rick
Member
Thread Starter
 
Join Date: Feb 2005
Location: Round Rock, TX
Posts: 38
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Doppler help

I ran the program but the results seem a bit fast to me :-) specially since I am running a 10x7 APC. The program shows 244.81 km/hr or 152 mph. Is this right?

The aircraft is a Laser Arrow with a Rossi 53 (with the black pipe)
Attached Thumbnails Click image for larger version

Name:	Ec89992.jpg
Views:	6
Size:	61.6 KB
ID:	843411  
5.0Rick is offline  
Reply With Quote
Old 01-06-2008, 12:09 AM
  #3  
Mike Connor
Senior Member
My Feedback: (5)
 
Mike Connor's Avatar
 
Join Date: Jan 2002
Location: Tulsa, OK
Posts: 2,025
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Doppler help

I have seen sound files that were easier to check but the best I can tell your #.s are right. It does seem a little fast but the Rossi 53 is a strong engine. Were you in a decent or have a tailwind?
Mike Connor is offline  
Reply With Quote
Old 01-06-2008, 12:27 AM
  #4  
5.0Rick
Member
Thread Starter
 
Join Date: Feb 2005
Location: Round Rock, TX
Posts: 38
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Doppler help


ORIGINAL: Mike Connor

I have seen sound files that were easier to check but the best I can tell your #.s are right. It does seem a little fast but the Rossi 53 is a strong engine. Were you in a decent or have a tailwind?
Thanks for the reply Mike. This was on a level flight with a 10 mph tail wind. I am running a 10x7. I was thinking about changing over to a 9x8 or 9x9. Which one would you go with?

Thanks,

Rick
5.0Rick is offline  
Reply With Quote
Old 01-06-2008, 12:43 AM
  #5  
Mike Connor
Senior Member
My Feedback: (5)
 
Mike Connor's Avatar
 
Join Date: Jan 2002
Location: Tulsa, OK
Posts: 2,025
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Doppler help


ORIGINAL: 5.0Rick

Thanks for the reply Mike. This was on a level flight with a 10 mph tail wind. I am running a 10x7. I was thinking about changing over to a 9x8 or 9x9. Which one would you go with?

Thanks,

Rick
The Rossi 53 is more for torque then rpm so I would start with the 9x9. That is still less load then the 10x7. The more I hear about the Rossi 53 the better it sounds.
Mike Connor is offline  
Reply With Quote
Old 01-06-2008, 01:40 AM
  #6  
bobsonjazoe
Junior Member
 
Join Date: Dec 2007
Location: , TX
Posts: 2
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Doppler help

Rick-
You are a nut dude.
bobsonjazoe is offline  
Reply With Quote
Old 01-06-2008, 09:49 AM
  #7  
5.0Rick
Member
Thread Starter
 
Join Date: Feb 2005
Location: Round Rock, TX
Posts: 38
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Doppler help


ORIGINAL: bobsonjazoe

Rick-
You are a nut dude.
Check out the video
http://www.nomadflyers.org/gallery/m...DI_NOISSES_PMT



Rick
5.0Rick is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service