Aluminum vs Fiberglass DVD
We've all seen or heard about the comparison Wipaire published about the aluminum vs composite floats DVD. We feel it did very little to compare the two styles as it was a "GM vs FORD" comparison. The two types have their basic design features which is all good.
Our Take: The whole development of the DVD, especially since it was narrated/funded by only Wipaire themselves is a bit comical to say the least. No input from the "other side". Bob (the owner of Wipaire) narrates it himself as to have gone to great lengths to "prove" that the 2 test aircraft are identical and the tests are without flaw or any favoritism.
Weight is probably the largest factor when comparing floats. Perhaps Bob just overlooked why the Wipline floats had zero steps in the weighing procedure, and the Aerocets had four steps not removed. This was quite obvious while viewing but perhaps was just maybe a slight oversite by the Wipaire support staff? It begs the viewer to just have a camera "peek" into the float compartments ... for whatever else could be in there?
Aerocet has done their deligence and advertises that fiberglass can absorb up to a total of 1.7% in weight. This equates to 6 pounds for the whole assembly - in which not the while float is below the water line, and also sheds this weight once out of the water.
You've heard the old adage of aluminum in the water ... it will always corrode and yes it will, and when they leak ... well it's got something to do with thousands of holes had to be drilled, and plugged with "aluminum" rivets ... and the sorry consumer scrambles every season to keep everything at and under the water line from leaking. But sure, they are great when they are new ... hey, I didn't see anything about that aspect in the film, or the ugly dock rash ALL aluminum floats have. Composite floats almost completely maintenance free, which is huge in maintenance costs savings and needs some large attention in a non-partisan video.
We, at Seaplanes West have developed a float conversion kit for the Cessna 182 and we support the installation of Aerocet, EDO and Wipline floats. We did this to accomodate all customers wanting the various floats, and we have completed all engineering, static tests, flight tests, and all requirements needed to achieve for the STC process and we obtained these approvals.
So ... why didn't WE do the DVD? Yes, we were invited, but declined for obvious reasons. Not simply because the performance and other various factors didn't amount to spending any energy comparing the two, actually we valued it as a negative for the floatplane community. Composite floats started our business and made the Cessna 182 a very viable floatplane in the market. It was the perfomance and support of Aerocet floats that gave us this lead. I guess one could support that claim by looking at the efforts Wipline has gone thru, to do this comparison of the Cessna 182.
Apparently Wipaire will send you a copy of the DVD ... if anyone wants one.
It's my opinion,
Jim