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.

  #1  
Old 03-03-2021, 03:55 AM
craig.roser's Avatar
craig.roser craig.roser is offline
 
Join Date: Feb 2019
Location: BRADENTON
Posts: 15
Default SMOKE SYSTEM

I spent my career in the fluid power industry. Hydraulics. Pneumatics. Electronics. Systems. I will like build my smoke system for my new to me RV8 from scratch.

At issue is injector and orifice location. Who has drilled a hole and who has come in from the end of the exhaust? Who has put two injectors in?

At issue is best practice. What do you love about your system?

At issue is continuous improvement. What would you change if you could do it over?
Reply With Quote
  #2  
Old 03-03-2021, 04:54 AM
fixnflyguy fixnflyguy is offline
 
Join Date: Jan 2006
Location: Winston-Salem, N.C.
Posts: 1,352
Default Follow History

More injectors = More smoke. The higher up the exhaust, the better vaporization, which means less belly residue. I drilled and installed mine about 12" up from the end and wish I would have gone 12" from the cylinder. I have 2 nozzles in my 4 pipe system, and I'm going to 4 nozzles to help eliminate "puffing". If you have exhaust with a "Y" joint, put the injector just below the "Y". Spray nozzles are easy to make, but several pre-mades are available. You will definitely want them removable for cleaning. I cant imagine trying to come in from the end..no need to restrict the exhaust or figure out the dynamics of that. Tank and pump will be easy, plenty of data on VAF for that. I'm sure one of the experts/system builders will chime in. SMOKE is the BOMB! Should be on every plane!
__________________
Bill E.
RV-4/N76WE
8A7 / Advance NC
Reply With Quote
  #3  
Old 03-03-2021, 11:59 AM
DeeCee 57's Avatar
DeeCee 57 DeeCee 57 is offline
 
Join Date: Sep 2018
Location: LSZF
Posts: 586
Default

Quote:
SMOKE is the BOMB! Should be on every plane!
You bet... and Earthís population is looking forward to breathing that additional free for all pollution source in
__________________
Life's short... Enjoy

DC aka Dan

http://www.aerofun.ch

RV-6.9 #25685, slider, O-360-A3A (carb/dual Lightspeed II), MTV-12-B, HB-YLL owner & lover
RV-4 #2062 HB-YVZ airframe builder
Reply With Quote
  #4  
Old 03-03-2021, 03:20 PM
DarinFred DarinFred is offline
 
Join Date: Mar 2006
Location: Columbus, MS
Posts: 87
Default

Quote:
Originally Posted by DeeCee 57 View Post
You bet... and Earthís population is looking forward to breathing that additional free for all pollution source in
I was on the fence about adding smoke to my build. This response just shoved me to the other side. Iím definitely adding it now!
__________________
Jay Fredricksen
F1 Wings #183
Belmont, NC
Reply With Quote
  #5  
Old 03-03-2021, 05:47 PM
RV10Man RV10Man is offline
 
Join Date: Jan 2005
Location: Oklahoma City, OK
Posts: 1,095
Default

Quote:
Originally Posted by DarinFred View Post
I was on the fence about adding smoke to my build. This response just shoved me to the other side. Iím definitely adding it now!

Great idea.
I plan to put smoke on my -9A at some point.
__________________
RV9A
N781DM became an airplane 2/8/2021
First flight 03/01/2021
Donated
Reply With Quote
  #6  
Old 03-03-2021, 06:00 PM
mikerkba mikerkba is offline
 
Join Date: Sep 2008
Location: Ely, Nevada
Posts: 234
Default Me three....

Quote:
Originally Posted by RV10Man View Post
Great idea.
I plan to put smoke on my -9A at some point.
Time for me to add one too. I am already putting on on the S-21 under build.
Follow the science, "they" say. One private jet departing Zurich leave more smoke than all the RV single engine 30 second bursts in the world.
__________________
Mike Coster
BUILDER: N92MB RV7A (A/W 3/2009) - Sold
ADOPTED/reworked: N4032Q RV8A (8/2017)
Building: S-21 Outback/Titan, tail and cockpit mated (3/2020)
KELY/Ely, NV
Reply With Quote
  #7  
Old 03-03-2021, 06:56 PM
MacCool's Avatar
MacCool MacCool is online now
 
Join Date: Aug 2020
Location: central Minnesota
Posts: 465
Default

When I bought my -9A, the previous owner had installed a Smoke System Helper smoke system. Nice unit! He found it useful for the formation flying he was doing, and mentioned that it also left little doubt about where was was in a crowded pattern. The tank fits perfectly right behind the passenger seat, takes up no room in the actual baggage compartment. Sadly, he took it out before I bought it. The good news is...he sold it to me at a great price, and all the wiring, switching, injector placement, and the firewall penetration with flare fittings is done. Bad news is...I actually have to install it.
__________________
RV-9A, 2011, bought flying
IO-320D1A
IFR certified
AFS 5400/3500, G5, 430W, some other stuff
Reply With Quote
  #8  
Old 03-04-2021, 09:07 AM
DeeCee 57's Avatar
DeeCee 57 DeeCee 57 is offline
 
Join Date: Sep 2018
Location: LSZF
Posts: 586
Default

Guys, my post above is not intended to be provocative... I’m the first one to love the sight of a smoke trailing RV, the more so if engaged in airshow flying

The remark is just food for thought... for some.
__________________
Life's short... Enjoy

DC aka Dan

http://www.aerofun.ch

RV-6.9 #25685, slider, O-360-A3A (carb/dual Lightspeed II), MTV-12-B, HB-YLL owner & lover
RV-4 #2062 HB-YVZ airframe builder
Reply With Quote
  #9  
Old 03-05-2021, 05:41 AM
ty1295 ty1295 is online now
 
Join Date: Aug 2011
Location: Jeffersonville, IN
Posts: 434
Default

Just about all the RV's at our airport have smoke. Of course the threat of locking any RV owner in the plastic blue porta johns if they don't install smoke might be a factor.

We do use them regular for formation, but just yesterday coming in to land solo Tower called me out to another plane as traffic. 2 seconds of smoke made it real clear where I was. Much better than strobes.
__________________
Jeff Scott
RV9A First Flight 9/30/19
Reply With Quote
  #10  
Old 03-05-2021, 10:58 PM
Nick's Avatar
Nick Nick is offline
 
Join Date: May 2007
Location: Rosharon, TX
Posts: 150
Default

4 nozzles, 3 within 8" of the cylinders except #4 which is about 14" to keep it downstream of my O2 sensor.

No needle valve, nozzles are sized to flow approx .20 gallons a minute each @ 80psi.

VERY little on the belly, although that may be because my pipes are still a little long.

Great smoke. 👍
__________________
Nick "Rehab" Nafsinger
91TS Rosharon, TX
RV-4 Bought 2019, Day to Day Restoration while still flying. SDS EFI IO-360, Hartzell CS, DanH inspired custom intake, G3x Panel
RV-8 SB, "Back burner project."
RV-10 Built 2010, Sold 2019
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 03:02 PM.


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.