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As a user of the anti splat gear leg stiffener and gust lock I am a believer in Alan's products. I also suffer from high CHT's on climb out, but what I would really like to know is what kind of CHT temp drop various RV's are getting with 1 and or 2 cowl flaps. I am looking forward to reports from early adapters of the product before I purchase one or two.
It would be great if someone has them and can report at the Oshkosh beer blast! John Morgan |
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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! |
I think that Alan reported a 20-25 degree drop in CHTs in his video using one cowl flap.
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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! |
Got my cowl flaps from Allan today and started the install. Pics to follow when I am done but the units are very well made and all the parts are precision cut. If the actuator can old up to the temp, I see no reason why the aluminum parts of these things won't last the lifetime of the airframe.
I do have a minor but solvable issue with the fact that my cowl is thicker than what was expected by about 0.030". My cowl is of the early pink cowl time frame if that matters. I decided to seal up the edges of the honeycomb with some epoxy/micro mix and that is curing overnight. 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! |
Here is the measurement of the thickness of the blank I cut out of the bottom of my pepto pink cowl:
![]() Found the flatest spot in the cowl to install and stay on the honeycomb area for consistent thickness. Should clear the exhaust easily. ![]() I used epoxy and micro mixed up thick as peanut butter and filled the exposed edges of the honeycomb where the cuts were made. Let that cure overnight and then went back and filed/sanded it all smooth. I then painted the edge to match the cowl and to seal it all up. This worked out very well. ![]() ![]() Painted the flaps to match the cowl. ![]() Here you can see what is almost the end result. I plan to use some stainless 6-32 button head screws to make it easy to remove if I need to for maintenance. ![]() ![]() ![]() As you can see the cowl is not perfectly flat in this area but it is not as bad as the digital camera makes it appear in pics. It seems the design of the units will accept a certain amount of curvature and they also will pull the cowl a little bit and the combo of the two makes it a OK... I decided that I am not going to mess around with trying to make the surface of the flap match exactly the surface of the cowl. It is close enough for me and to apply a fix may not be worth the effort. More to come as progress continues.... 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! |
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Good report
Anxiously awaiting the flight test data/report.
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Allan's going sell a ton with the help of your photos.
Nice job Brian. Your photos make me want to order two right now. Can't wait to see the results.
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