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

Discussion in 'Mazda Rotary' started by Billrsv4, Sep 29, 2016.

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  1. Oct 17, 2016 #41

    Billrsv4

    Billrsv4

    Billrsv4

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    Bill and group,
    All our work has been with 2 or more rotors. To make a LSA single rotor I beleve it could be done with a light weight rotor. Either machined steel or cast titainum. That would allow counterweights of about 1/3 the mass. The torque pulses would still present some problems but no worse than a big single piston. Smoother actually since it isn't reciprocating. Just a thought. The pendrlum style dampers could be built into the counterweight and flywheel, (which is also a counterweight), to make a compact package.
    The other Bill
     
    Last edited: Oct 17, 2016
  2. Oct 18, 2016 #42

    brucec995

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    Doesn't a single rotor wankel fire 3 times per crankshaft revolution?
     
  3. Oct 18, 2016 #43

    Billrsv4

    Billrsv4

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    No, the rotor rotates at 1/3 E-Shaft speed.
    Bill
     
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  4. Oct 18, 2016 #44

    Billrsv4

    Billrsv4

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    For aircraft I always thought that it would be great if you could take the drive right off one of the rotors. it would be perfect as a prop drive. Couldn't think of a reasonable way to do it. Of course if we can figure a way to do that the single rotor LSA rotary would be awesome. Hijacked my own thread!

    Bill
     
  5. Oct 18, 2016 #45

    don january

    don january

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    Bill. I have a chance to buy a 13b off of a aircraft without a PSRU. I think it would be a neat power plant for a stock KR-2 if the weight can be brought down to the very minimum. But I think we are still looking at around 280 lb. with cooling Ect. I'd love to see a single or more rotor engines used in todays home built's. I'd kick down 3 or 4 grand $ if it fit my mission.
     
  6. Oct 18, 2016 #46

    Billrsv4

    Billrsv4

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    Don,
    I am working with a gear manufacturer right now. He has made custom gearsets for the Reno Merlins. When we have some pricing information I will be forwarding estimates to the group.
     
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  7. Nov 16, 2016 #47

    Patrickh99

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    Any chance you will have a prop governor option?
     
  8. Nov 25, 2016 #48

    Billrsv4

    Billrsv4

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    Possible, but more likely with a second generation. The drive has already been run with an MT electrical operation prop without TV issues. It would be easier to drive from the engine end, and most of the regular CS props are very heavy

    Bill
     
  9. Jan 10, 2017 #49

    rv7charlie

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    Hi Bill,

    Any updates on the gearbox?

    What about the muffler?
     
  10. Jan 12, 2017 #50

    Billrsv4

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    Charlie,
    Trying to finalize the price and methods for the ring gears. We are looking at ratios of 2.6:1 and 2.8:1. 2.8 is the preferred ratio right now. We like to keep our RPMs down so either would work, but the 2.8 ratio allows more headroom. The fact that the north central portion of Oregon has been covered in ice has made things difficult. I will post updates. We have the dyno engine hung on the plane now. Trying to complete that. Muffler is being scoped after the dyno running to be sure of it's durability. Don't want anything coming adrift!
    Bill
     
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  11. Jun 13, 2017 #51

    wsimpso1

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    It has been five months since we heard ANYTHING about this project. Has install been finished. Report on flight performance and fuel burn? Torsional vibe survey? Come one, we want to know about this...
     
  12. Jun 13, 2017 #52

    rv6ejguy

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    Bill just sent me an email yesterday. He's about to start getting gears cut finally. I'm sure he'll pipe up here soon on the subject.
     
  13. Jun 13, 2017 #53

    Billrsv4

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    Billski,
    Still at it. Regular job has interfered as I was living in a hotel on site while we completed a large Cleaning machine. We compressed design and delivery of a machine that would normally take 5 months to 9 weeks. This was all in work and precluded any work on the gearbox/2rotor install. Will be at the gear cutters tomorrow and will post updates.
    Bill
     
  14. Jun 13, 2017 #54

    Billrsv4

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    Ross,
    I am planning to check to see if we can do 2.2 or 2.4:1 on the same centers as the 2.7 would work for the Subarus too.
    Bill
     
  15. Jun 27, 2017 #55

    wsimpso1

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    looking forward to news. Any plans for an appearance at OSH?
     
  16. Jun 28, 2017 #56

    Billrsv4

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    Billski,
    Sadly my regular work won't allow a OSH visit this year. The reduction drive is a desire and alternative engines a passion, but as so many have found there isn't a large enough market to make it an only business. I have the layout and modeling done, bearings ordered, and I'm working with the gear facility now. The guy I'm working with has done reductions for Reno Merlins and does beautiful work but he isn't fast. If you or others on HBA know of a reputable gear maker put me in touch! Always best to have several sources. I will not allow myself to be one of the many B.S. slingers, that have given alt-engines such a bad name. I intend to have a product ready for use. My foremost principle is to develop the product on my buck and present it ready to go. I want the answer to a buyers question, "When can I expect delivery?", to be, "As soon as your check clears."
    Bill Jepson
     
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  17. Jul 6, 2017 #57

    Billrsv4

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    Got the first set of bearings in. Should be up to the task. Not a commercial post the card is only included for sizing.
    TIMKEN32017X-SMALL.jpg
    Bill Jepson
     
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  18. Jul 6, 2017 #58

    rv7charlie

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    Congrats, Bill. Glad you've been able to make some progress.
     
  19. May 1, 2018 #59

    Billrsv4

    Billrsv4

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    Charlie, I am completely ready to proceed, lacking only money for some of the machining. I am going to sell my RV-10 kit for the money to complete the gearbox/s first run. I plan to return to a kit AFTER I have running examples to sell to cover the cost of production. We have an RV-3 ready to fly soon. lots of finishing stuff that takes forever.
    Bill
     
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  20. May 1, 2018 #60

    rv6ejguy

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    Glad to hear things are still progressing Bill. Sad you have to sell your RV-10 kit though. I've been down that same road...
     

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