Roberto Costa wrote:
Dear friends at Rotary Engine mailist:
I´m begining to build (slowly) a BD-4.
One felow builder recomended the rotary engine.
I would like to know if there are some BD4 with rotary engine.
Near impossible to find a wankel here in Brazil - in the whole
country, there are perhaps one or two RX-7 - but it´s a interesting engine,
and, who knows, some day our import policies may change.
Also, any info about the Ford V6 3.8L alternative engine is welcome.
Thank you in advance for your attention and courtesy.
Roberto Costa, São Paulo, Brasil.
We have several BD4's being built with rotary engines. There should be
some japanese
people in São Paulo with contacts in Japan that might be able to get a
used
Mazda rotary engine directly from Japan.
I don't recommend the Ford V6. It is much heavier than the Mazda 2 rotor
and not as long lasting in air craft service. The fire wall forward
weight
of the V6 would be well over 400 pounds or about 900 Kg.
Paul,
At the risk of sounding picky, I think you mean 200 kg. The entire
aircraft will be about 900 kg. If they really are interested in Fords, then
the Duratec 3.0 liter V6 would be a better choice. About 25 kg lighter than
the 3.8 with stock forged components and 200 HP out of the box. Not nearly
as favorable wt/HP as the rotary and its substantially taller than the 3.8
(about 13 cm taller). The 3.0 liters may be more difficult to locate in
Brazil than the old standby 3.8 liters.
Charlie Smith
KIS Cruiser 4021
You are right Charlie. I should have divided by 2.2 rather than
multiplied by 2.2.
Why can't we all just get along and uses inches :)
My guess is the 3.0 L HP rating is at a higher RPM so the gear reduction
will be higher and the hand grenade mode will be worse with the engine
running at a higher RPM. Not what you want to do with a piston engine.
Ever been in a dyno room when a racing V8 is developing full chat?
Your immediate inclination is to flee :) A rotary on the other hand is
loafing
at 6000 RPM.
Paul Lamar
....inches - inches??
Why is a Japanese-Engine Fanatic not fluent with metric, as that's what the
Japs use too?:))
How ever there is hope - I understand even Boeing is doing its airliners in
metric, ....or not?
Just to pick a little more .....3 grains to the inch, 12 inches to the foot,
3 feet to the yard, 2 yards to the fathom, 1 SM is 5280ft .....it makes
sense!!
10 mm to the cm, 10 cm to the dm, 10dm to the meter, 1000 m to the
km........ how does that work???
I don't want to start with using fractions when using a caliper or wrench
sizes or drill bit sizes ..........:))
Thomas J. (metric by logic...)
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