VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.






VAF on Twitter:
@VansAirForceNet

  #81  
Old 09-02-2022, 06:00 PM
Russellmn Russellmn is offline
 
Join Date: Jul 2022
Location: Sturgeon Lake
Posts: 6
Default

Just a thought in the discussion of whether enough fuel could flow through that restrictor to get through a run up and takeoff... Don't we always turn on boost pumps before takeoff? What kinda pressure are you pushing with them? 30psi? More? Would it be enough?

6psi will supply a 500hp V8 through a -4 no problem...
Reply With Quote
  #82  
Old 09-02-2022, 06:49 PM
swift12 swift12 is offline
 
Join Date: May 2021
Location: Palmerston North
Posts: 203
Default

Quote:
Originally Posted by Russellmn View Post
Just a thought in the discussion of whether enough fuel could flow through that restrictor to get through a run up and takeoff... Don't we always turn on boost pumps before takeoff? What kinda pressure are you pushing with them? 30psi? More? Would it be enough?

6psi will supply a 500hp V8 through a -4 no problem...
Mute point...it was a carburettor not injected so the float bowl will fill and the restrictor will easily fill the bowl for low power operations and a 1700 rpm run up is still low power...so it will show up when leaned out after takeoff when the float bowl is emptying.
__________________
2022 dues paid gratefully. great site for help and info.
Reply With Quote
  #83  
Old 09-02-2022, 08:04 PM
gasman gasman is offline
 
Join Date: Mar 2007
Location: Sonoma County
Posts: 4,761
Default

An .040 reducer is OK for oil, and could be reduced in size, but it is really too big for gas. An .015 restrictor would provide fuel pressure (and the loss of it) and provide a greatly reduced hazard during a hose failure..... Instead of one size fits all.

If a .015 fuel reducer was installed in this situation, this accident would have never happened.
__________________
VAF #897 Warren Moretti
2022 =VAF= Dues PAID
Reply With Quote
  #84  
Old 09-02-2022, 08:25 PM
airguy's Avatar
airguy airguy is offline
 
Join Date: Oct 2006
Location: Garden City, Tx
Posts: 6,078
Default

Quote:
Originally Posted by gasman View Post

If a .015 fuel reducer was installed in this situation, this accident would have never happened.
That's a very astute observation. Similar to ground leaning - lean it enough so that any application of power will bog down and make it obvious.
__________________
Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2023 dues paid
N16GN flying 1,200 hrs and counting on 91E10; IO360, SDS, WWRV200, Dynon HDX, IFD440, G5
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
Repeat Offender - 10 empennage in process.
Reply With Quote
  #85  
Old 09-02-2022, 11:51 PM
scsmith scsmith is offline
 
Join Date: Jan 2008
Location: Ashland, OR
Posts: 3,354
Default

Quote:
Originally Posted by airguy View Post
That's a very astute observation. Similar to ground leaning - lean it enough so that any application of power will bog down and make it obvious.
Another one of those posts that makes me wish we had a 'like' button
__________________
Steve Smith
Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet" Flying since Sept. 2009
Hobbs 725
also
1/4 share in 1959 C-182B (tow plane)
LS6-15/18W sailplane SOLD
bought my old LS6-A back!!
VAF donation Dec 2022
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 06:02 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.