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  1. C

    What Skills to Fly the Stewart S-51 Mustang?

    One of the S51s based in Arizona.
  2. C

    What Skills to Fly the Stewart S-51 Mustang?

    A friend of mine has been doing the initial test flying of an S51. He has over 1000 hours instructing in P51s, indicated that about 5 hours dual in a T6 practicing takeoffs and landings will prepare oneself for safely flying the S51. He stated that once airborne, the S51 handles nearly...
  3. C

    Vibration Analysis Company

    It is hard to determine from the pictures, but if the splines are not lubricated but run “dry”, it is possible that the wear is fretting corrosion. The exact same phenomenon occurred in the WWII Allison powered P39 propeller drive shaft. The splined coupler on the drive shaft that connected...
  4. C

    Big Block Chevy powered Stewart S51 featured in a national magazine.

    Just checked it at 11:00 PM, its up.
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    Big Block Chevy powered Stewart S51 featured in a national magazine.

    The "hotrod.com" link lasted for about a week. Here is the archived link.....https://www.motortrend.com/features/p51-mustang-airplane-replica-big-block-chevy-power/
  6. C

    Big Block Chevy powered Stewart S51 featured in a national magazine.

    This aircraft has dual plug cylinder heads with one set of plugs fired by an MSD electronic system and the other plugs fired by a Vertex magneto. The fuel injection system is an AirFlow Performance FM300 mechanical fuel injector. Totally "old school", once the engine is started, the mag...
  7. C

    Big Block Chevy powered Stewart S51 featured in a national magazine.

    The PSRU is not scratch built. It was designed for up to 750 HP and put into production by Jim Stewart in the early '80s. This PSRU is currently available from Bill Hudgens' Stewart 51 Partner LLC, www.Stewart51.info.
  8. C

    Big Block Chevy powered Stewart S51 featured in a national magazine.

    The Big Block Chevy powered Stewart S51 will be featured in Hot Rod Magazine. Search 'hotrod.com' for the web article, the print version will be available in the September or October issue.
  9. C

    There's a new V12 coming ;-)

    What Ross said. In an interview, Ryan Falconar stated that he didn’t design his V12 with a 60 degree cylinder bank because he didn’t want a tall engine. Collapsing the 90 degree bank to 60 degrees would most likely involve moving the camshaft out of the block and into the cylinder head. He...
  10. C

    There's a new V12 coming ;-)

    90 degree V12, will have the same reliability problems in an airplane just like the Thunder Mustang’s Falconar V12.
  11. C

    PSRU Gear Ratio vs. Prop Tip Speed

    What you need to be asking is what is the maximum hub speed of the prop. Once that is established you can pick a reduction ratio that will put your engine’s torque peak near that speed. The Hartzell four bladed prop used on the Stewart S51 has a maximum hub speed of 2200 RPM. Jim Stewart...
  12. C

    How Hot Is Too Hot?

    Tex, Make the improvements necessary to enable your airplane to do this. This S51 has wheel chocks, the tail is held down by a bar through the fuselage lift tube chained to a tie down ring on the ramp and the landing gear struts have straps attached to a pickup truck. The coolant system in...
  13. C

    How Hot Is Too Hot?

    Tex, There are a couple of things that I would do if it were my project. I would increase the coolant line diameters going to and from the radiator. The 3/4” I.D. lines that are adequate for a Rotax are too small for a larger displacement engine. I would use at least a 1 1/4” tube. More...
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    How Hot Is Too Hot?

    Tex, Not privy to your exact installation, but I can tell you what works in a supercharged 540 c.u. Big Block Chevy installed in a Stewart S51. You must have a coolant expansion tank of at least 2 quart volume mounted at the highest point of the coolant system, either at the very top of the...
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    Supercharged Big Block Chevy

    The PSRU is designed and built by Jim Stewart. www.stewart51.info
  16. C

    3 Ship Formation

    Two is a wee bit out of position. Formation flying is a lot of work to do it safely and look good. My jab at the Navy was just interservice rivalry.
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    3 Ship Formation

    Navy formation, same way same day.
  18. C

    Landing characteristics of the S51

    An S51 builder has contracted a professional test pilot, Elliot Sequin, to test fly and produce a test report and operating manual for this particular S51. Elliot will fly off the complete 40 hour test period. After every flight he produces a video as well as a debrief of the test points and...
  19. C

    Supercharged Big Block Chevy

    How about this? https://www.youtube.com/watch?v=FUhoGpbkK1I
  20. C

    Supercharged Big Block Chevy

    540 Cubic Inch BBC, 660HP, 750 lb/ft torque.
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