VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #1  
Old 10-06-2015, 06:44 PM
hlangebro's Avatar
hlangebro hlangebro is offline
 
Join Date: Mar 2012
Location: San Diego, CA
Posts: 133
Default C/S performance and whistling noise

I did some performance flights with my new C/S Hartzell prop over the weekend. The engine is a O-320, 160hp.
I compiled the data into a neat chart



and some pics of the prop and plane





I flew over a buddy's house and he got a crappy cell phone video clip, however there is a whistling sound/noise, and I am curious if someone knows what that can be?
I know the 9 and 9A whistles, and I think it is due to the flap design... but I haven't heard anything about the 7A...

https://www.facebook.com/video.php?v...33059468211256
__________________
H?kan Langebro
San Diego, CA

RV-7A, slider
Lycoming O-320 D1A, 160hp C/S
First flight 6-11-13

Re-engineering a Lancair 320..!


http://www.youtube.com/watch?v=AJuQ68tccTQ
http://www.mykitlog.com/hlangebro/

Last edited by hlangebro : 10-06-2015 at 08:05 PM.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 12:16 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.