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  1. D

    Input on the cause of Rotax 912 engine's serious shaking.

    This right here is the smoking gun. Any decent engine mech will tell you, "always replace as a set", or at least ensure they are the same weight and dia. One piston that is even .010" over will cause an imbalance, as that cyl will be making a tad more power. IMHO the heads should be pulled...
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    Sadler Vampire

    I've also been interested in the Vampire. Thank you Auto.
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    LIQUID PISTON rotor engine

    This page has a video of the X-Mini doing a run in a Dyno cell.
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    4130 tube ...help!

    Not with TIG. Pure Argon only or you get very bad results. Cabover, rereading your original post, I noticed the boiling didn't start until you added the filler rod. Perhaps the filler is contaminated. It should be wiped clean with alcohol or degreaser just prior to use. Also rust on the...
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    4130 tube ...help!

    Two things I haven't seen mentioned are A/C-D/C and polarity. TIG for steel should be D/C EN. Running A/C or EP will cause problems.
  6. D

    Part 23 NPRM - ARC - ASTM

    3500 pounds and six seats keeps the Murphy Moose as a personal aircraft.
  7. D

    What To Do With Cured Prepreg?

    Methylene Chloride based paint strippers WILL remove epoxies. I would get some straight M/C and soak the prepreg in a closeable METAL drum for about 3 days.
  8. D

    Where can I buy hinges?

    Check out McMaster-Carr. Or Graingers industrial supply.
  9. D

    Which aircraft kit fits me best

    Look up the Murphy Rebel kits. They go from 2 seat to 6 seat, Rotax to Russian radial. The Moose uses a 360-400 Hp radial.
  10. D

    Spot Weld Question

    There should be no reason why he can't weld over the MIG tacks with O/A. Heat is heat. How one puts two pieces of steel together depends more on the filler metal.:)
  11. D

    Airport dog needs good home

    “Every soldier should know how to call for fire, and every leader needs to be proficient in it,” Cookman said. He explained that often times small arms fire isn’t enough to suppress the enemy. “If small arms are ineffective, and bigger guns are needed, this is how they get them,” he said...
  12. D

    Veterans Day

    Thank You Belle and Thanks also to JMAN. Both for your Service and for this GREAT site. Bart BT2 USN 1979-88
  13. D

    New engine for your consideration.

    Having read the tech papers on this technology. This system has nothing to do with earlier attempts. This time they do not shut down only some of the cylinders. This system cycles between ALL cylinders so that they remain at optimum temp.
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    Free Minimax plans now up and running

    Helidog12; If you went through the checkout at TeamMM, You should have recieved an email. If no email check your spam filter. I got my email the next day, had the plans ~2min later.
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    110 heads need work

    That also happens on VW's. The common remedy is to have them machined a set amount and use a spacer gasket of the required thickness to bring down the compression ratio. Bart
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    Steam Power Plant

    Here is a more in depth article on the Besler aircraft and engine system. The boiler is a flash type that operates at ~1200PSI and 800*F. The engine is a double acting cylinder, pressure compounded 90* V twin. 150HP @1625RPM. William & George BESLER --- Steam-Powered Airplane -- 2...
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    Laws of Physics

    Only if you Survive the first two:shock:.
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    Penetrating oil

    Try a LEFT hand drill bit, quite often the screws will loosen from the vibration and then just back right out.:)
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    looking for help

    Bruce: Is the pilot also making the appropriate engine noises??:ban:
  20. D

    Capacitive Fuel Probe - How to Secure It?

    Billski: Gas cans are made of Ultra High Molecular Weight Polyethylene. It is available in extra thick wall tube form and machines very easily. Flanged bushings held in with flox would work, there's not much that will bond to polyethylene.:ermm: Bart
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