VansAirForceForums  
Home > VansAirForceForums

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

- Today's Posts | Insert Pics

  #1  
Old 03-16-2017, 05:07 PM
Drippy Drippy is offline
 
Join Date: Nov 2015
Location: Vermont
Posts: 94
Default Fuel FLow Test

Just curious of anyone else as asked to perform a fuel flow test by FAA prior to inspection? I don't mind doing it and it actually sounds like a good idea but I didn't see a very much traffic about it on the board and was just curious if this specific to this inspector.

Drippy
40644
Almost flying, I hope:-).
Reply With Quote
  #2  
Old 03-16-2017, 05:15 PM
Kyle Boatright Kyle Boatright is offline
 
Join Date: Aug 2005
Location: Atlanta, GA
Posts: 3,189
Default

I did one on my RV-6, and will do one on the -10 when the time comes.

It is one of those things that is a VERY good idea. Fuel system problems are one of the leading causes for engine failures in experimental aircraft. So you want to do everything you can to minimize that possibility.

A successful flow test is one indication that your fuel system is working properly.
__________________
Kyle Boatright
Atlanta, GA
2001 RV-6 N46KB
Reply With Quote
  #3  
Old 03-16-2017, 05:43 PM
Drippy Drippy is offline
 
Join Date: Nov 2015
Location: Vermont
Posts: 94
Default Agreed

Kyle,

Yes I agree it is a good idea.

What pitch attitude did you use with your RV8? Any thoughts on what you will use with the RV10?
Reply With Quote
  #4  
Old 03-16-2017, 05:49 PM
Kyle Boatright Kyle Boatright is offline
 
Join Date: Aug 2005
Location: Atlanta, GA
Posts: 3,189
Default

It has been a while since I tested the -6, but my recollection is of doing it in a three point attitude with the tail wheel in a slight depression.

With the -10, I'll probably find a way to prop the nose wheel up with the tail tie-down ring on or near the ground.
__________________
Kyle Boatright
Atlanta, GA
2001 RV-6 N46KB
Reply With Quote
  #5  
Old 03-16-2017, 05:58 PM
Drippy Drippy is offline
 
Join Date: Nov 2015
Location: Vermont
Posts: 94
Default attitude

AC90-89B calls it out at 5 degrees above the highest anticipated climb angle. Not really sure what that is?

Any of you flying RV10 guys have an number of max climb angle?

Thanks

Mike
Reply With Quote
  #6  
Old 03-16-2017, 06:48 PM
N427EF N427EF is offline
 
Join Date: Oct 2005
Posts: 1,510
Default Fuel flow test is a must

My DAR did not ask for a fuel flow test but I certainly wanted to know how well
my fuel system performs.
It is somewhat difficult to place your airplane in such a nose high attitude as to be 5 degrees above the highest anticipated angle of climb.
I pulled down the tail and then jacked up the nose wheel until the tail tie down ring touched the floor.
Additionally I placed the receiving gas can a couple feet higher than the fuel controller, simulating a very steep attitude.
The rest is straight forward, hit the boost pump for a number of minutes,
measure total gas pumped and calculate flow per hour.
Don't recall the precise flow on my 10 but it was around 50 GPH.
__________________
Ernst Freitag
RV-8 finished (sold)
RV-10 Flyer 400 plus hours
Over 2500 Gallons of E10 mogas burned
Don't believe everything you know.
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 08:14 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.