Thanks for the reply, let me answer
cjensen said:
I've pretty much stopped reading your posts George, but
for some reason, I did read this one. You are correct that this thread is about
the H-6, but I NEVER said anything about weight. It's about the H-6 and
PERFORMANCE with the FP version of the VERY light 4 blade prop.
Frankly, the weight of the engine is somewhat beneficial to me anyway, as I
am building a -7 .................
Your comments on weight related to Subies can be turned just as easily on
ANY engined airplane. There's a lot more to empty weight than the engine
(panel, interior, paint, primer). You know that, right?
how can you "disagree" with Jan and his comments about comparing the
weights of the H-6 and the IO-360? Have you weighed both engines full
firewall forward as he has??? Just wondering since you are always right on
target and topic.
At this point, I too will join the others, and leave you to your opinions.
Enjoy
Thanks for reading and replying to my post. I like to comment on your reply if I may.
You made some good points, but weight is a big consideration of performance and
that's my story, sticking to it. Bottom line keep is as light as possible, regardless
of engine, that's all.
I agree the RV-7 can handle nose weight and I said that above, I am building a
RV-7. The RV-7 is a better match than the RV-9A for the H-6, in my opinion.
cjensen, good point, empty weight is more than the just engine/prop, but just a
quick look at empty weights listed above shows this variation in weights. Still
the average is very consistent (small deviation). There is a correlation direct
between engine choice and empty weight.
I tracked/recorded RV empty weights for a few years, noting which engine
and prop they had. The data I posted above is direct from Dan's excellent
weight and balance data base:
http://www.rvproject.com/wab/
This correlates well with my "sample group". There's only so many things can
leave off the airframe (panel, interior, paint, primer) to make up for a heavy
engine.
Anyone, You, rv6ejguy can look at empty weights and draw the same
conclusion with out name calling. May be not? Some people don't like facts.
Its no mystery RV's with 320's are lightest. RV's with the angle
valves (200HP IO360's) tend to be the heaviest, (I)O360's in the middle.
Of course as you point out there are variations in how the planes are equipped,
painted, upholstered etc..... but, simple averages (or statistical median)
show a consistent trend;
the engine and prop drives empty weight.
Of the Eggenfellner installations they almost all come out close to the top of
the heap (heaviest) in empty weight, not all, but the average. Sorry, I find it
interesting and wanted to share, sue me.
I corresponded with Jan. He gave me his good "faith estimate" that the
installed weight for the new H-6 is 40 lbs more than current installations. To
be fair it was not a guarantee, just an estimate. I showed him the empty
weight data, and he agreed, these where typical empty weights RV's with
Eggy installations.
Its a simple matter of adding 40 lbs to the current average empty weight of
current flying Eggy RV's. THIS IS WHERE THE PROP COMES IN? The
new unbelievably light weight 17 lb prop will help. Tell me more? That is
very light. Instead of name calling how about some more info, like the empty
weight of the test plane?
It does not matter what the engine and prop weighs hanging on an engine
hoist. What matters is the installed weight. I think everyone knows water
cooled engines weight more with their associated radiators, pumps, hoses
and fluids?
IS ANYONE THINKING THE 6 CYLINDER H-6 WILL WEIGH THE
SAME AS THE OLD 4-CYLINDER INSTALLATION? I DON'T THINK I
AM BREAKING NEWS?
I leave you and rv6ejguys to your "opinions", Sirs; have a nice day. I am just
sticking with the facts. Its hypocritical of either of you Gent's to get all preachy
and all up in your own @$$ about hi-jacking threads, we all do it, including you
two, Enjoy yourself.
Oh yea, please block my post from your view, I don't want you reading them. I don't
care if you read or like my post, many do, but not to pejorative, if you are going
to be hostile and intolerant, I prefer you not read them so you are not tempted
to make rude comments. That would make me happy. Thanks
Cheers George