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Message
Thomas,
Looked at those as well as the Vortech. In the end I choose
the Eaton and the Egg Subi configuration because more are and will be flying
than any other for the foreseeable future. It gives a larger base for looking at
problems and reliability. I am also closely copying the fuel system design. Same
reason. Regardless of the engine we are installing I think all auto conversions
have a lot of common ground with the "systems" that support the engine.
Bobby
Bobby,
before you pluck down the money for the Eaton, check out
the Whipple/KenneBell/Lysholm.
In the last 5.0-Mustang mag (sometimes I fall back to old
habits, sorry.... :) ), there was an advertisement for a KenneBell setup
as a direct replacement for the Eaton ( there was some factory offer with a
Eaton charger, probably from the Motorsports department...), which claims more
power/efficiency with the same setup (bolt in...)
I know that the Whipple is pricier than the Eaton, but not
that much!
Thomas J.
----- Original Message -----
Sent: Monday, June 13, 2005 9:20 AM
Subject: [FlyRotary] Re: normalized
supercharger?
I am planning to use an Eaton M62 blower for
normalization. Basically the same configuration the Egg Subi's are running
without the automatic waste gate controller only one size larger. In this
configuration the TB goes in front of the SS and the waste gate is built into
the blower. The waste gate will be controlled by a cable and will have to fly
by MP. I calculated I would need to make 3.78 # of boost to achieve sea
level pressure at 8000 ft. 4.5 #'s with an intercooler. So,,, I am going to
install a larger SS pulley and a smaller crank pulley to limit the boost to
4.5 psi at 6500 rpms. No need to spin the SS any faster than necessary. My
goal is to have a fuel efficient plane at cruse so boost above this altitude
would be wasting fuel. This also putt's the Renesis and IO540 at about the
same performance level at and above 8K.... only 125#'s lighter with a faster
cowl. :)
I would like to look at an electronic waste gate
controller but have not figured out how to build it yet.
Bobby RV10
Hi
Mike,
How were you planning
to normalize with the supercharger?
I'm planning to put either a supercharger
(what I'd prefer), or another turbo (shut up John <g>) on the RV-3,
somewhere down the road. One of the drawbacks to
the supercharger is the lack
of boost control. I asked the ATI guys about controlling the boost via a
valve on the outlet of the blower, but they said not to do that because it was
bad to unload the blower.
You can certainly control boost via
throttle opening, and perhaps you can even do it via engine computer almost
like a sort of rev limit. What's your plan?
Cheers,
Rusty (no flying today, due to work that
sucks)
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