Cloud Dancer

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About Cloud Dancer

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Cloud Dancer's Activity

  1. Cloud Dancer added a post in a topic Caption Contest   

    New DWI test for pilots.
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  2. Cloud Dancer added a topic in For Sale and wanted, you got it, I want it   

    In flight adjustable prop for sale
    Just found this on Craigslist, someone on this list may be interested. Ad says in flight adjustable.
    https://lansing.craigslist.org/avo/d/saint-johns-in-flight-adjustable/6806589161.html

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  3. Cloud Dancer added a topic in Two Strokes   

    100 horses in a 4 cylinder with fuel injection. Antique
    I just ran across this on E-bay. Not practical but interesting. It was made by what later would become a huge marine engine builder. It's a 100 horsepower, 4 cylinder, 2 stroke, fuel injected aircraft engine from WW2. Link to ebay auction here while the sale is active. https://www.ebay.com/itm/Kiekhaefer-V-105-2-aircraft-Drone-Engine-V4-two-stroke-with-Prop/283346972788?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3D80b26e6b9fcc4f7188179fd94c190574%26pid%3D100675%26rk%3D2%26rkt%3D12%26sd%3D173752446457%26itm%3D283346972788&_trksid=p2481888.c100675.m4236&_trkparms=pageci%3A3d840137-1de8-11e9-8c5f-74dbd1807027|parentrq%3A734161c11680ac3cbf2fdbaeffe9f815|iid%3A1
     


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  4. Cloud Dancer added a post in a topic Starting my Homemade Hackman   

    If you decide to drill it out I suggest you either grind off the old number on the jet or at least document that it has been drilled out. If someone ever tries to work on it down the road they are going to take the number on the jet at face value.
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  5. Cloud Dancer added a topic in Hangar Talk   

    3D Printing carbon fiber wing struts and gear legs and spars?
    I was reading a story about a guy that wanted to make carbon fiber tubing for bicycle custom builds. He designed and built a machine that does it on the cheap. I can see how his mandrel could just as easily been shaped like an aerodynamic wing strut and lengthened to produce wing struts. His round mandrel would also work for producing carbon fiber wing spars and leading and trailing edge components too. The future is looking bright.
    Here's a link to his article or at the Hackaday website. https://hackaday.com/2019/01/18/an-arduino-carbon-fiber-wrapping-machine/
     
    And here's the link the the machine designers detailed page. https://bryanmkevan.bike/2018/12/16/carbon-framebuilding-das-faserwickelmaschine/
     
     
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  6. Cloud Dancer added a post in a topic today's funnies   

    Somebody spent some time putting those images together. I can't say I have any love for the woman. She's a multi millionaire, if she wants to go somewhere she can use some of her own money for a change.
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  7. Cloud Dancer added a post in a topic Confused?   

    Somebody on this site had a motor mounted right side up, why didn't that catch on? With most guys going to the taller gear I would think you could lower the engine to get it inside the cowl and mount the reduction drive spun 180 degrees. It surely can't be prop clearance issues can it?
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  8. Cloud Dancer added a post in a topic Issues flying behind a 2-stroke   

    Just back inside from blowing the first major snow off the sidewalks. I used an old Toro 2 stroke snow blower from the early 70's that I used as a kid when my grandfather purchased it new. Granted it only gets used a half dozen hours a year but it still amazes me it's still running. I've replaced parts over the decades but no work to the engine. It screams at full throttle and burns regular 30 weight oil mixed 1/2 pint per gallon. It never gets winterized but keeps on ticking like a Timex watch. Some might say I would be smart to run modern 2 cycle oil in it but I think I want to keep the 30 weight oil experiment running. Have we really gained anything with these new oils or are we just being sold snake oil?
    I went to the Oshkosh air show a week early last year just to help assemble the WW1 birds Kermit Weeks had shipped up from Florida. I was amazed to learn they still use Castor oil in those engines. With all the advances in oil since WW1 and they stick with Castor oil. They told me they use it because it does not mix with fuel and therefore does not wash off the cylinder walls. The down side is it gets thick and gums up the engine during extended storage. Maybe it's because they are from Florida where it's warm, I don't know, but they have never heard of Sea Foam. I contacted a chemical engineer at Sea Foam and asked him about foaming rotary engines for storage. He said because it is mineral based like Castor oil it should work just fine. I forwarded the information to Kermit and he said he was going to look into it. Most people I know here in the Midwest winterize our two stroke water craft by fogging. There is even a fog port built into my jet ski just for this purpose. My snowmobiles got the same treatment for summer storage back when I sledded. I do know it keeps the  carbs from gumming up during storage. Before using it; every time I dug out the jet ski or snowmobile for the year, I would have to spend half a day taking carburetors apart and cleaning them to get the motors running smooth.
    My question is when during engine development did we get away from Castor oil and why? Since you guys were talking oil, maybe someone has an answer. The only modern engines still using Castor oil that I can think of are those used for model aircraft, cars and boats and those are quickly being replaced with electric.
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  9. Cloud Dancer added a post in a topic YAMAHA RX-1 (140 HP) install in Kitfox 5   

  10. Cloud Dancer added a post in a topic Friendly thrust competition   

    I agree,that's why I think you would have to add the static poundage to get it to move to the scale to get a more accurate number of the actual thrust.
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  11. Cloud Dancer added a post in a topic Friendly thrust competition   

    Was the pounds required to move the aircraft's dead weight added to the scale number? How much force did it take get each airplane to begin to move?
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  12. Cloud Dancer added a post in a topic 582 Engine Mount/Isolator   

    Are you referring to the Lord mounts and snubber washers? I had to track some down for my airplane but I have no idea if my engine mount is a factory design or not since I didn't build it. This link will get you to the manufacturers home page and from there you can browse to the mount your in need of. Take the part number from there and then hunt around for a reasonable priced vendor. Most I contacted either wanted to secure a large order or had crazy high prices for small orders. Some tried to gouge me with the shipping. Link here: https://www.lord.com/products-and-solutions/vibration-and-motion-control/industrial/isolators
    Since there are four holding my motor in the engine mount, I divided the total weight (engine, muffler carbs etc.) hanging off my Lord mounts by 4 and used that as a starting point to find a rubber with the load bearing capacity I needed. Then you get into the flex desired to weed out vibration and pick. I was toying with the idea of using a mix of two different density rubber compounds to help snub vibrations occurring from more than one engine setting such as one rubber  for idle and another for cruise rpm. You could stagger the different density mounts in a side to side pattern or a front to back pattern or a bilateral pattern depending on what vibration pattern, engine torque pattern or static weight distribution on the individual 4 mounts. I ended up getting 4 all the same but I may play with these if I have vibration or torque issues. If you think you have a bad mount it's best to replace them all. They do have a shelf life and if one's bad the others may not be far behind. Steer clear of used parts vendors or items listed as new old stock. The clock starts ticking the day these compounds are poured into the moulds. Fresh is best.
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  13. Cloud Dancer added a post in a topic YAMAHA RX-1 (140 HP) install in Kitfox 5   

    Kawasaki made public some details about the Kawasaki H2's engine at Intermot. It was confirmed to be a 998 cc inline-four engine with a supercharger, producing 300 horsepower (220 kW) in the H2R racetrack-only variant, still by far the highest rated engine ever for any factory production motorcycle,[48][46][47] 50% more than its nearest competitor, the BMW S1000RR.[14] For comparison this is 4.5 times the power of the Continental A-65 engine in the Piper J-3 Cub aircraft.

     
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  14. Cloud Dancer added a post in a topic Issues flying behind a 2-stroke   

    I'm sorry, the cold seizure was in reply to Turbo's question earlier in this thread. Your right about the rotary valve replacing reed valves but I thought the same shaft on the rotary valve ran the oil pump thus controlling it?
    Our 582's are obsolete so we won't see a magic box from Rotax to bolt on and adjust the air/fuel/oil ratio under all temperatures and altitudes and make them bullet proof.
    The Boondocker boxes are like putting a faucet in front of your faucet to control the water mixture going into your bathtub. Any change in the first faucet throws off any mapping you have programed in and screws up your desired temperature. I think there are far too many variables to make this kind of an approach feasible by anyone.
    Back to Turbo's original thoughts, I think they are valid under a given set of constraints. A light built, lightly loaded Avid Flyer at sea level on a cool day will probably fly with a Rotax 337 up front. The performance will stink but it will probably fly. Put a 582 Rotax on there under the same circumstances and you have about double the horsepower to play with. An inflight adjustable propeller that is properly designed to tax his airplane's performance envelope for take off and cruise speed should see a benefit.
    Try that with a heavy airplane with an extremely heavy load in the mountain elevations on a hot density altitude day and the Inflight prop becomes a waste of time and money. You have already burned up any margin of extra manageable horsepower needed to make the inflight propeller feasible.
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  15. Cloud Dancer added a post in a topic Issues flying behind a 2-stroke   

    Are you referring to all 2 stroke engines or just Rotax? Plenty of people idle 2 strokes for extended periods of time without any adverse effects. I've got an old 1950's vintage outboard engine that's spent hours on end idling while trolling for fish in the lakes of Minnesota. It hardly ever fouls a plug either! And it has a much higher ratio of oil to gas than our Rotax 582's are burning. There's got to be a little more to the story.
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