Dave,
Try these links http://www.snowperformance.net/products.php?p_cat=319
http://www.snowperformance.net/product.php?pk=17
http://www.snowperformance.net/product.php?pk=23
You will need a nozzle and fitting to mate
with the ¼” hose. With one 100cc nozzle my intake temp drop to 10-15F
above an OAT of 90F. Cooler OAT’s narrow the gap. One nozzle sprayed
directly on the intercooler should keep it from getting heat soaked. A second
nozzle after the intercooler would help guard against detonation. My pump
produces around 230 psi and makes a nice fog. The pump control circuit allows
me to arm the system before takeoff. Actually I leave it armed most of the
time. I have a flashing LED that turns on with the pump. I then monitor the
intake charge temp on takeoff roll. When temps confirm the water injection is
working I increase the boost to about 39” MP for climb. I’m using
distilled water except during our very short winter. For the winter I’m
using windshield fluid for freeze protection. The windshield fluid contains alcohol
but I have no intention of fooling around with Tracy’s timing curve.
Bobby
From: Rotary motors in
aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of David Leonard
Sent: Friday, July 01, 2011 8:41
PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Water
injection system
Thanks so much for the help. So, is that 100cc/min? Then in
a 15 min race I would only use 1.5L of ADI? If so, I could easly addapt
my existing smoke system to double as ADI injection. (It holds about 3 gal).
That would make it really easy! I would probably use 2 100cc and
turn them on manually at 40" - I am only using the system for a handful of
races..
I didn't see just the nozzles on any on the Snow Performance web site.
Should I just call them?
On Fri, Jul 1, 2011 at 4:31 PM, Bobby J. Hughes <bhughes@qnsi.net> wrote:
Dave,
I’m using an ET150 110V pump with 1/8” NPTF fittings.
It’s rated for continuous duty and weights a little over a pound. Snow
Performance for nozzles and fittings. I based the controller on the attached
pdf. The LM339 chip will allow you to control up to four different nozzles
triggered at different MP sensor voltages. So you could trigger a 60CC
injector at 36 MP and another 60cc at 40 MP etc. I run one 100CC triggered at
32 MP with no intercooler for climb.
http://www.clarksol.com/html/prodspecsET50-BPump.cfm
http://www.lovehorsepower.com/images/WI/Controller/water_injection_controller_schematic3.jpg
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
On Behalf Of David Leonard
Sent: Friday, July 01, 2011 1:40
PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re:
[Bulk] [FlyRotary] Re: GSL393/74028 Fuel Pump Replacement/Fuel Leak
It will be difficult to burn more than about 20 gal per with
a rotary. Maybe as much as 30 gal with a turbocharged 20b.
Bill B
I was seeing
upwards of 30 gph with my turbo 13B while running the pylons at Reno. That would be about
45gph with a turbo 20B. Course I was running really rich to be sure I
avoided detonation.. Am trying to design a water injection system to use
more boost and run a little leaner.
--
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