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07-10-2014, 12:24 PM
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Join Date: Sep 2010
Location: Redlands, Ca.
Posts: 1,458
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Quote:
Originally Posted by Brantel
Allan,
Email sent but for the sake of everyone else considering this product:
Do you recommend 1 or 2?
What is the price and availability?
Do you have any claims to share regarding how they helped cooling in your testing?
The linear actuator will be in a hot environment, what kind of rating does it have for this application?
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... We only did our testing with one "EZ Cool Flap" installed, so can only attest to those gains. In a hard extended climb (80Kts. I was seeing 425 CHT without the flap and 400 with it open on my RV-9A. On the RV-7s we saw 20 to 25 degrees reduction as well, depending on the climb speed chosen. The cowl differential pressure goes up on average 24% with the flap opened so it is passing considerably more air. I don't want to mislead anyone by talking about temperatures they will see as every installation is different. I am quit certain that two of these will do considerably more than one but without measuring the cowl pressures I don't know exactly how much. I will say that about 30% of the orders so far have been for two, so apparently I need to gather that information.
... The linear actuator isn't rated by the manufacturer for the potential temperatures it can encounter. No one in our testing program has had a problem as of yet. We placed some actuators in our heat treating oven at 220 degrees and cycled them 1000 cycles with no failures. I would recommend the product be installed on the side of the cowl with the most heat shielding from the exhaust. Perhaps where the heat muff is etc. The radiated heat is the area of concern, like after landing and taxiing. One should try to shield away the radiated heat if possible.
... We made this first run of this product producing 100 units with pricing of $369. We posted the video last night and e-mailed the people that had requested notification when the parts were available. The sales have been pretty incredible to say the least, with over half sold by 11;00 AM today.
... We do not have this product on our main page yet but will try for tomorrow when our resident computer guy is here. I only posted the video so people could see we were making progress and see the actual item. Please just bear with us as all will smooth out with answers to everyone's questions etc. Regards all, Allan... 
__________________
Allan Nimmo
AntiSplatAero.com
Innovative Aircraft Safety
Products, Tools & ServicesInfo@AntiSplatAero.com Southern California (KREI)
RV-9A / Edge-540 
(909) 824-1020
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07-10-2014, 12:28 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Thanks Allan and thanks for your reply to my email. I sent you another one in return.... 
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07-10-2014, 12:33 PM
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Join Date: Nov 2011
Location: Aurora, OR
Posts: 843
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Quote:
Originally Posted by BoilermakerRV
You could go full tilt and create a closed loop control system that would position the cowl flap based on CHT! 
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That's borderline brilliant. Who's going to do it first? 
__________________
Greg Hughes - Van's Aircraft - Community, Media, Marketing
Van's web site | Instagram | Facebook
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Building RV-8A since Sept 2014 (N88VX reserved)
Dual AFS 5600, Avidyne IFD 440, Whirlwind 74RV, Superior XP IO-360
VAF build thread - Flickr photo album - Project Facebook page
Aurora, OR (EAA Chapter 105)
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07-10-2014, 12:41 PM
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Join Date: Sep 2012
Location: Omaha, NE (KMLE)
Posts: 2,247
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Quote:
Originally Posted by greghughespdx
That's borderline brilliant. Who's going to do it first? 
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Not that application specifically, but I am in the design stage on a closed-loop controller to open & close an oil cooler shutter based on oil temperature. It wouldn't be a stretch to adapt it for that.
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Dale
Omaha, NE
RV-12 # 222 N980KM "Screamin' Canary" (bought flying)
Fisher Celebrity (under construction)
Previous RV-7 project (sold)
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07-10-2014, 12:51 PM
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Join Date: Jan 2005
Location: Sedona Arizona
Posts: 349
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Thanks Allen for another great looking design. This is perfect for my new to me RV6A as it just moved to the desert country from the Northwest and she is having some issues with the 100 + degree temps that are so very rare up in the Seattle area.
I look forward to install two of these units and seeing some effect.
Randall Crothers
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07-10-2014, 12:53 PM
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Join Date: Mar 2006
Location: Newport, TN
Posts: 7,496
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Quote:
Originally Posted by BoilermakerRV
You could go full tilt and create a closed loop control system that would position the cowl flap based on CHT! 
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Quote:
Originally Posted by greghughespdx
That's borderline brilliant. Who's going to do it first? 
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Quote:
Originally Posted by DaleB
Not that application specifically, but I am in the design stage on a closed-loop controller to open & close an oil cooler shutter based on oil temperature. It wouldn't be a stretch to adapt it for that.
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That would be super easy to do with one of the modern EFIS/EMS units and an Arduino... You could sniff the serial stream from the EFIS/EMS and parse out the CHT variables and use either the servo library or the PWM output to drive the linear actuator (special order option on the actuator)....
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07-10-2014, 01:08 PM
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Join Date: May 2005
Location: Tuttle, Oklahoma
Posts: 2,563
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Quote:
Originally Posted by Brantel
That would be super easy to do with one of the modern EFIS/EMS units and an Arduino... You could sniff the serial stream from the EFIS/EMS and parse out the CHT variables and use either the servo library or the PWM output to drive the linear actuator (special order option on the actuator)....
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RITFLOL!!!  If ever there was a sentence written that proves that NERDS ( whether computer, electronic, airplane, or any other type) speak a different language than a normal person this is it! 
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07-10-2014, 01:13 PM
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Forum Peruser
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Join Date: Jan 2005
Location: Austinville, Alabama
Posts: 2,458
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Quote:
Originally Posted by Brantel
<SNIP>You could sniff the serial stream from the EFIS/EMS and parse out the CHT variables and use either the servo library or the PWM output to drive the linear actuator (special order option on the actuator)<SNIP>
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Man, oh man, Brian, I just love that "engineer talk." No jesting, just noticing you slipped into your work mode.
P.S. Looks like Steve had the same thoughts as I did. I was distracted and didn't hit the "Submit" button before he did. 
__________________
Don Hull
RV-7 Wings
KDCU Pryor Field
Pilots'n Paws Pilot
N79599/ADS-B In and Out...and I like it!
?Certainly, travel is more than the seeing of sights;
it is a change that goes on, deep and permanent, in the ideas of living." Miriam Beard
Last edited by rv7boy : 07-10-2014 at 01:15 PM.
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07-10-2014, 02:15 PM
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Join Date: Nov 2010
Location: Okanagan Valley BC, Canada
Posts: 483
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What are the dimensions Allen? The -8 cowl is not very wide in that area...
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Ron Townson
Okanagan Valley BC, Canada
RV-8 Completed Dec 2013
Membership renewed Sept 8, 2019
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07-10-2014, 02:26 PM
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Join Date: Aug 2010
Location: Wichita, KS
Posts: 1,958
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Quote:
Originally Posted by rv7boy
Man, oh man, Brian, I just love that "engineer talk." No jesting, just noticing you slipped into your work mode.
P.S. Looks like Steve had the same thoughts as I did. I was distracted and didn't hit the "Submit" button before he did. 
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Uh-oh. I didn't flinch when I read Brian's post. What does that say about me?
__________________
Kurt W.
RV9A
FLYING!!!
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