ASA New Product Video is up! (July 2014)

[LifeofReiley]

Brian, you're on it... very nice work. Can't wait for more. I think you can put that cut out material back in place at the cowl exit when you're done. Some Speed Back Baby!!

[Brantel]

While it may appear like I am on a fast track to test flight, I still have many things to do while the cowl is off to prepare for Osh. so it may be a few days before the results are in.

I also need to clean the belly of the plane, the flaps and a few other things before the show.

Tonight I finished up the cowling part of the install. Next is to add the switch and wires to the panel.

I decided to forgo the model airplane servo type wiring and connectors and splice in some real Tefzel airplane grade wire. Just from limited testing I am not sure it would be wise to try and run two of these things off of one of those tiny extension leads/connectors. I don't like redoing stuff so I did not want to take a chance and decided to roll my own wiring.

Did that and then reflective taped them to the cowl up and around to the top left corner where I will install a connector.

Not sure if it will help or not but I also applied some reflective tape to the actuator body where possible.



Tested everything up to this point and was trying to see how much power these things had and almost mashed the tip of my middle finger off. Beware these things are strong!

DISCLAIMER: Please make up your own mind as to the value of any product that I review here on VAF. I like to review the products that I buy and use. Typically I tell it like it is and include my likes and my dislikes. In this case I am a guy with a problem keeping his CHT's under control during climbout on hot days and Allan came along and offered a commercial solution to my problem. I am taking the risk of trying his new product by buying/installing/using them and will report my experience here in this thread. As always Your Results May Vary!

[alpinelakespilot2000]

Brian-
Are you going to be running both doors off one switch or two?

[Brantel]

Originally Posted by alpinelakespilot2000

Brian-
Are you going to be running both doors off one switch or two?

To keep it simple, one. They are both wired to the same feed line. The kit came with two switches and LED's if you want to go with two.

Each unit has its own internal limit switches so there is not problem with em getting out of sync or anything like that. They just run till the end and stop.

DISCLAIMER: Please make up your own mind as to the value of any product that I review here on VAF. I like to review the products that I buy and use. Typically I tell it like it is and include my likes and my dislikes. In this case I am a guy with a problem keeping his CHT's under control during climbout on hot days and Allan came along and offered a commercial solution to my problem. I am taking the risk of trying his new product by buying/installing/using them and will report my experience here in this thread. As always Your Results May Vary!

[NYTOM]

Brian I was just wondering, the reason you went with two cowl flaps. Could that be overkill for any reason. Maybe a chance of a little shock cooling ? Two sure look better and make for a balanced appearance.
Can't wait to see them at OSh. Your going to be the first consumer tester.

[Brantel]

Originally Posted by NYTOM

Brian I was just wondering, the reason you went with two cowl flaps. Could that be overkill for any reason. Maybe a chance of a little shock cooling ? Two sure look better and make for a balanced appearance.
Can't wait to see them at OSh. Your going to be the first consumer tester.

I went with 2 partly because I wanted a symmetrical look.

I also figure that 75-80 percent of the benefits most likely will come from adding one and two most likely won't lead to anything bad "BUT"

Allan posted his pressure drop testing table that seems to indicate ~ 45-55% increase in DP (2 vs 1) in the speed zones I am interested in. I am not sure how DP correlates to CHT drop without looking up one of Dan's charts. I am guessing it will improve them but not by enough to be concerned about going too far.

Originally Posted by PerfTech

....Here are the pressure differential numbers we gathered on my airplane (RV-9A). These percentages of increases were typical of what was gathered on all the other tests aircraft with stock Vans factory cowl. We installed a second unit and tested the improvement as many people were ordering two and ask for this differential information.
.

.

Bottom line is that I want to be able to use the climb performance of the RV and have been limited by CHT's. Using the redneck engineering theory of if one is good then two must be better!

I know there will be a speed penalty of using two over one but I don't care about that in the climb.

DISCLAIMER: Please make up your own mind as to the value of any product that I review here on VAF. I like to review the products that I buy and use. Typically I tell it like it is and include my likes and my dislikes. In this case I am a guy with a problem keeping his CHT's under control during climbout on hot days and Allan came along and offered a commercial solution to my problem. I am taking the risk of trying his new product by buying/installing/using them and will report my experience here in this thread. As always Your Results May Vary!

[scard]

Originally Posted by Brantel

Tested everything up to this point and was trying to see how much power these things had and almost mashed the tip of my middle finger off. Beware these things are strong!

That sure does look like a heck of a bend radius on all of those folded parts.

[Brantel]

Originally Posted by scard

That sure does look like a heck of a bend radius on all of those folded parts.

Just telling it like it is: I have no idea what alloy this stuff is made out of and I am sure Allan can tell us but I can tell you that the form/fit/appearance of these things are as good as it gets. There is no sign of a crack or stress marks on any of these parts. Someone did a great job designing the tools for his press brake.

Lets also keep in mind that these are cowl flaps and not spars....

DISCLAIMER: Please make up your own mind as to the value of any product that I review here on VAF. I like to review the products that I buy and use. Typically I tell it like it is and include my likes and my dislikes. In this case I am a guy with a problem keeping his CHT's under control during climbout on hot days and Allan came along and offered a commercial solution to my problem. I am taking the risk of trying his new product by buying/installing/using them and will report my experience here in this thread. As always Your Results May Vary!

[rvator51]

Working on mine. Plans say to drill .201 hole in 4 places. Where did .201 come from? The closest I got was a 13/64 drill.

[Brantel]

Originally Posted by rvator51

Working on mine. Plans say to drill .201 hole in 4 places. Where did .201 come from? The closest I got was a 13/64 drill.

I used the same but by the time I got done filling the raw honeycomb and filing/sanding the edges to fit the actual unit, the corners ended up close to square.

I doubt the radius is that critical as long as it looks good to suit you.

Something else to consider (I did not and wish I had) is the area up at the ends of the hinge. The hinge is not as wide as the flap so it leaves two gaps, one on each side. If I were doing it over again, I would customize my cutout in that area to eliminate those gaps....



DISCLAIMER: Please make up your own mind as to the value of any product that I review here on VAF. I like to review the products that I buy and use. Typically I tell it like it is and include my likes and my dislikes. In this case I am a guy with a problem keeping his CHT's under control during climbout on hot days and Allan came along and offered a commercial solution to my problem. I am taking the risk of trying his new product by buying/installing/using them and will report my experience here in this thread. As always Your Results May Vary!