peace, projects, and conversions
You can say whatever you want but there is a nice way to say it. I looked at Vesta's web site also and think some of their comparison numbers, cost and weight are not correct. However I have never used the word BS in any of my post, even to you. I have presented my point of view, I think the Lycoming engine for 99% of the RV builders is still an excellent choice. Do you have a problem with that?
GMC,
OK peace. However don't you think your lead line at least provocotive? My BS comment may have been over the top, but it did get a considered reply out of Jason Day/Vesta V-8 which was useful. Jason seems a straight shooter. But I would like to see flying examples of his work. We need to sort out the snake-oil salesmen. I seriously doubt anyone was offended, if so I'm sorry. In this case I do believe the ends justify the means.
My own project is a 20B engine. For those that don't speak Mazda that is a 3 (three) rotor engine based on the 13B housings and therefore 50% bigger than a 13B. My weight point to beat has always been an IO-540. About 450+ pounds ready to run. (many are way more than that) Mistral's PSRU (the most expensive part of my project) is offered for sale indivdually, mostly due to the urgings of Paul Lamar to Francois Bedoin Mistral's C00 or CEO. (not sure) The company plans its own 3 rotor offerings later so the PSRU was designed for the power of up to a 380 HP turbo 3 rotor. Mine will be normally aspirated and derated from 345 HP in the car (w/turbo) to approximatly 250 HP WITHOUT turbo. The 20B easily will produce 250 HP in fact Paul Lamar has recently been testing a version of the 13B producing 228 HP with a carburated intake with much room for improvement. The Mistral PSRU has been running a CS prop from day one in testing on a Piper Arrow. If you check their site carefully thay are posting their tested Hp/torque curves for both the NA and turbo engine. They are also testing a SPARK IGNITION Jet A engine which is very interesting. The Turbo engine will be certified which helps to explain the pricetag.
I am a builder back to the BD-5 era. (I was 16) I worked my way through school as a mechanic, then machinist, finalily engineering starting 19 years ago. Like many of us in the engineering world I am upset by vaporware giving us all a bad name. I lack the funds to proceed as fast as I would like to or the engine would be running on the test stand now. I'm NOT retired so I need to fit in the time for design and construction around my typical work, not always easy I'm sure you would agree. I'm not really thin skinned but I am passionate about the fact that homebuilding pushes the availability of offerings from conversion builders as well as spawning the entire clone industry. I was reffering to clones primarily when stating that Lycoming was starting to feel the pinch caused by homebuilders. Van's is one of the largest purchasers of new engines and people like Eggenfellner ARE having an effect on sales. I am interested in a rotary FWF to sell to the public, but I'm not ready to risk everything to start that business. I should have started a Rotary Engine Thread. IMO the rotary makes a better aircraft engine than a car engine! I havent even mentioned the smoothness of the design yet either. enough already
Bill Jepson
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Cheers George
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