one of my fellow Velocity
builders (whom, I believe, is also on this list) posted the following (what
I may refer to as alarmist BS) in response to an inquiry of a builder
considering a 13B or 20B for his airplane: ...

David Doshay wrote:

I am another of those Velocity builders on this list too, and I'm one with
a 20b to mount into the tail of that aircraft.

In defense of that other fellow, whom I do not think is on this list, he is
one of the best mechanics I have ever met, and is a certified Mazda Master
Mechanic. I intend to rely upon him heavily in my conversion process, and
up until now he has been instrumental in my keeping my 91 RX-7 in prime
shape.

I did not see what he said as alarmist, only as advice on where to spend
considerable engineering effort. But then again, I have spent many hours
with that guy, and that may influence the way I read his email.

I think we will all agree that the cooling system is critical on our
conversions.
His only point is that the design of the rotary engine concentrates heat in
one section of the engine, and we need to be even more careful than one
might need to be for a piston engine.

I've spent some time with Al too, and he is a thoughtful and careful engineer
as well. I just doubt that Dale would give advice that is far from truthful
with
respect to a subject he knows well.

David

 
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