Also if you are seriously contemplating the use of a rotary (RX7 or
RX8), I would seriously recommend subscribing to one or both of the two
listserv's or newsletters out the

FlyRotary: http://www.flyrotary.com/ , web archive viewable at
http://lancaironline.net/lists/flyrotary/List.html

This is the list where people are DOING things (more practical oriented)
and is a little less moderated.

Rotary Engine Newsletter, formerly the Aircraft Rotary Engine Newsletter:
http://www.rotaryeng.net

This is closely moderated by an engineering type in California, who
reviews each post before forwarding it. The focus here is much more
theoretical, and skewed toward peripheral ported rotary engines. On more
than one occasion the moderator has stated how something will "not work"
based on theory and analyses, only to have someone on the other list be
"doing it". Still worth following tho.

Dave

Dave S wrote:
I believe you are mistaken on the IVO.

The IVO has a specific range of travel that is accomplished by twisting
the blade midshaft, not rotating the entire blade in the hub.

Also, with the auto engines the original poster is discussing, it is
less a function of the engine and more a function of will the PSRU
(re-drive) support a hydraulic governor. The Marcotte and Mistral PSRU's
will support a hydraulic constant speed prop, others such as the Real
World Solutions brand will not.

An electric MT can be obtained that will run in the beta (and even
reverse) ranges, but that is a $10k US proposition. Of course, getting a
hydraulic governor, the price difference for a redrive that supports
one, and getting a hydraulic CS prop, you are likely there with the cost
of an Electric MT in the first place.

It costs money.. plain and simple.

The IVO may be an option for you, but as for a specific "beta" range, I
am fairly sure it doesnt have one.


Dave

Gig 601XL Builder wrote:

I believe both the Woodcomp and the IVO will go into Beta.


"Rob Fonhof" wrote in message
...

Hi All.
Just wondering if there are any props out there that can be used on
an experimental aircraft engine, ie:subaru or RX-8 Renesis, which
have a beta range. Don't even want to consider a certified unit as
this would probably cost more than the rest of the firewall forward
components.
Thanks in advance,
Rob.
Melbourne Australia.