The question I have for Powersport is: Why did they stiff th= eir customers who paid 100% for their FWF engine packages and did not get= their engine controllers or exhaust systems. I personally talked t= o 3 of them who had this happen and they said there were others who had t= he same experience. Did they make delivery or not? = ; If not, I consider them out of business despite their claims to the con= trary.

Tracy Crook, (and you can quote= me on this)

----- Original Messa= ge -----

From: Greg Fuess

Sent: Tuesday, February 03, 2004 6:32 AM

To: Rotary motors in aircraft

Subject: [FlyRotary] Renesis Engine For Aircraft

All, Some food for thought. Power= sport has started replying to e-mail on another list, and was asked about= the Renesis engine. This is what Tim had to say. I had thoug= ht that the Renesis would have been a great aircraft engine, but would ha= ve to lean towards more educated opinion. The questions to powerspo= rt and their replies are copied in full below.

I would appreciate any feedback on what is said.

Thanks, Greg Fuess

Thanks for the info. Some questions for= you:

<= SPAN style=3D"FONT-SIZE: 10pt">1. What is the status of Powersport? Is it= currently shipping FWF
packages for RVs? Which mode= l RVs?

= Currently we have completely developed FW= F packages for RV 6-7-8-9 (9 at your own
"not recom= mended by Vans" discretion.)

2. Is the Renesis e= ngine interchangeable with the old 13B? Obviously
<= TT>di= fferent exhaust, but are the engine mounts, etc. the same?<= /TT>

Simply put, the Renesis is not suited for installation in airc= raft. There are many
reasons for this.

3. Is the Renesis engine better than the old 13B for aviatio= n use? I
understand it has better economy and sealin= g due to the new port
arrangement. Is there anything= else we should consider?

No, the Renesis is far= worse for aviation use. It does not have better economy, <= /TT> especially at the RPM range used in an aircraft. It is lower HP! I= t still needs a suitable aircraft ECU added. It dev= elops its HP at a higher RPM with will reduce its life cycle. The changes made were for emissions and low end torque, which = are not important factors in aircraft. Mazda still = uses P-Port system for their top racing application. 4. Is Powersport planning on switching to a Renesis-based FWF? No, see above. I am not saying= the Renesis is not a good engine, it is a great engine... for a car. The HP ratings are way overstated. Those who have run t= hem on dynos have reported outputs around 180HP. Thanks, Tim

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