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psru

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  1. epijack

    A Detailed Look at PSRU Design Methodology

    Over the course of recent years, and over the course of having designed several engines and gearboxes for various applications (PSRU, helicopter, NASCAR, INDYCAR, industrial, etc) , several clients and a number of friends have asked me to make available my thoughts on "How to Design a PSRU"...
  2. D

    Open Source PSRU Design -- Is it possible without personal liability to contributors?

    A couple of years ago, I started down the path of an auto conversion project and quickly became aware of the many design challenges, especially as regards torsional vibration, and the limited number of available options that are universally regarded as successful, safe alternatives. Lately, I've...
  3. cblink.007

    BMW R1100GS Conversion... requesting feedback

    I am looking into the possibility of converting a BMW R1100GS for aircraft use. Apparently it has been done very successfully overseas, but some questions remain: 1. Before anyone jumps the gun, yes, I have contacted Spang Air in Germany, since their aircraft uses it, and I am awaiting feedback...
  4. M

    Motorcycle engines powering airplanes

    I know this topic has been visited multiple times. One of the problems is that the engine is not designed to run at 100% throttle for 2000 hrs. What if the redline is limited with a rev limiter to keep the rpm from exceeding 2700 rpm, instead of a PSRU, or limiting the rpm to 50% throttle and...
  5. Skypilot1961

    440 Kawasaki PSRU design, parts, plans, sources

    I'm scratch building a PSRU for a recently acquired Kawasaki 440, water cooled, oil injected, dual carb engine. It's going to be used in a RagWing RW6 (absolutely love this plane!!!). Would really appreciate any help in choosing the proper drive ratio (thinking 2.9 to 1) as well as prop...
  6. Skypilot1961

    PSRU plans and parts sources for engines under 40 HP

    Hi fellow builders - Could we build a list of parts resources for building PSRU setups? The pulley's seem to be the most difficult to find short of paying top dollar for those being labeled for ultralight aircraft use.
  7. parkert51

    New PSRU Design Competition

    I have an idea. I have a need for a tall PSRU for this new engine. I would consider holding a contest for the best design and the winner would receive a new engine as the prize which is valued @ $10,500. What do you guys think? Actually it was an idea given to me by a fellow member, but I...
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