Hi all,

I’m new to the flyrotary (FR) list and am building a Defiant with two turbo 13Bs.  I am looking at mounting the engines “plugs up” as described by Neil Kruiswyk and tried to contact him at the home.com address listed on the FR website.  My e-mail keeps bouncing back.  Does anyone have a current address for Neil?

Beyond that, I would like to identify others that have mounted these engines sideways (plugs-up).  How many hours do your projects have on these installations?  What issues have you uncovered that may be related to the plugs-up orientation?  Has anyone found (more than expected) difficulty cooling that may be related to air pockets in the cooling jacket?

What about engine mounting?  How do you grab the engine block?  Have you looked at the stresses at the attach points?

I’m also considering a constant speed prop.  Tracy Crook advises me that his PSRU will accept only electrically adjustable props and I have identified IVO and MT as possible suppliers.  Are there other electrically adjustable props in this power category?  Are there other PSRUs that accept a hydraulically actuated prop adjustment?

Thanks in advance for any advice you all can offer.

Gordon C. Alling, Jr., PE

President

acumen Engineering/Analysis, Inc.

540-786-2200

www.acumen-ea.com