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Message
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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