Recent content by Billrsv4

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    How many people are interested in a GOOD safe psru for the rotary?

    Guys the "solution" Paul Lamar had to the gearbox problem was to run a Bell helecopter gearbox, (read super expensive and rare to boot) and cast a bunch of silicone rubber blocks and paddles. This was the shotgun solution. the cast blocks and paddles were exactly like the rear final drive on...
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    How many people are interested in a GOOD safe psru for the rotary?

    Billski, As you are probably aware the Original Powersport design uses no rubber anywhere. This design has run with everything between a wood prop to a constant speed without problems. I would suggest a ground adjustable prop rather than a weighty CS. Steve Winseril (sic) did his masters thesis...
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    How many people are interested in a GOOD safe psru for the rotary?

    Billski, The bearings I selected for the new Psru are Timken Tapered roller bearings 85mm, quite stout. don't know if I will attempt to sell anymore. Vans Airforce became quite hostile to alternate engines. I don't need the hassle. I am sorry that those folks expecting this won't get the chance...
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    How many people are interested in a GOOD safe psru for the rotary?

    dWalker, Due to the covid situation I lost my 9-5 job. I am still working on the reduction gear. 1 portion remains in design. I will continue but very slowly. Wish I could say more, but there is only a small chance to make money on it. I was hoping to provide for my own aircraft and defray my...
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    Mazda Rotary Engine

    Aircab you might think that chrome was best but the early Powersport tried many surfaces. The reason for the braised side plates is that they can be nitrided hard. That is a chemical change of the material itself on a molelecular level. It can’t flake or peel like chrome can. That was the best...
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    Mazda Rotary Engine

    Only one of the last superlites used the braised housings. Never run thru tests. Now at the EAA museum. For the superlite that they tested with they had done aluminum end plates that they did with coatings. They found the coatings difficult and tricky to apply. They questioned the durability of...
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    Mazda Rotary Engine

    As info for everyone. The “Superlite” engine was so changed that it couldn’t even be considered a Mazda product anymore. It was an all out attempt to really make a rotary AIRCRAFT engine. They made their own aluminum side plates, cast their own housing for their own planetary reduction gear, and...
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    Mazda Rotary Engine

    The Hatch/Beckham engine was leased to the RV3 owner for a dollar and he took credit for it and won several awards. Hatch was killed while flying in a non engine related crash. Beckham his friend and partner for many years was so broken up by his loss that he sold the company to the Wisconsin...
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    Mazda Rotary Engine

    OK guys here is the engine I was talking about. It uses a simple electronic ignition, Mechanical aircraft fuel injection and makes 200 HP. Why not sell this one?
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    Mazda Rotary Engine

    So you guys are giving it another go? Are you going to sell Reduction Drives? Or just complete packages? When was the last engine delivered? Why not sell the Beckham/Hatch MECHANICAL FI and electronic ignition? That was the engine that they developed the 200 HP engine with. Every time someone...
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    CAD Program

    Hi Hotwings, I’m a solid works pro that is semi-retired. I have my own seat and I’m willing to work with fellow pilots cheap to free. Depending on how complex and or interesting the project is. The best way to get a good cad program is as some have mentioned to join the EAA and use the free...
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    Why battery-powered aircraft will never have significant range

    One thing ignored in this arguement is that a properly designed PEM fuel cell can produce H2 at up to 3000 psi when used as an electrolizer. Power from renewable sources could even be used to run the cell.
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    Running two-stroke engines lean-of-peak

    Something most people ignore about two-cycle operation is that most systems that inject oil are based on RPM of an engine driven injector pump. There are also pumps made that work off both (engine) RPM and throttle opening, similar to a diesel fuel pump. These pumps don't VARY the mix due to a...
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    Running two-stroke engines lean-of-peak

    I would caution everyone about point 1. in this response. two-strokes will show a temperture drop LOP, if you can get there. Since many two-cycles are running near their peak temp at WOT even with the correct mixture, as you lean the mixture you will pass through a very dangerous area just LOP...
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    Running two-stroke engines lean-of-peak

    Kevin, I wouldn’t recommend LOP on a 2 cycle. The reason is that you are carrying your lube oil, either in pre-mix in the fuel, or in some engines injected from a separate oil tank. Since that oil lubes your big end bearings you don’t want to starve them. You can sometimes run a 2 cycle out of...
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