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  1. J

    Lycoming engine parts specs please

    Hope this thread is an OK place for this question: Anybody know of a source of lift/duration specs for Lycoming cams? Thanks, Jeff
  2. J

    For Sale Nomex Honeycomb core

    Clearing out the shop, Price Reduced to $1200!
  3. J

    For Sale Nomex Honeycomb core

    Nomex Honeycomb Core: Qty 20 sheets: .250” thick x 48” x 96”, 3.0 lb. density, 1/8” cell. Qty 3.5 sheets: .375” thick x 48” x 96”, 3.0 lb. density, 1/8” cell. Qty 2.6 sheets: .375” thick x 36” x 96”, 3.0 lb. density, 3/16” cell, Over Expanded. For Sale as a Lot, Price $2300, includes heavy...
  4. J

    For Sale Nomex Honeycomb Core

    Nomex Honeycomb Core: Qty 20 sheets: .250” thick x 48” x 96”, 3.0 lb. density, 1/8” cell. Qty 3.5 sheets: .375” thick x 48” x 96”, 3.0 lb. density, 1/8” cell. Qty 2.6 sheets: .375” thick x 36” x 96”, 3.0 lb. density, 3/16” cell, Over Expanded. For Sale as a Lot, Price $2800, includes heavy...
  5. J

    For Sale Wemac Eyeball Vents

    Wemac Eyeball Vents I have four, $85 each, includes mailing in CONUS. Includes hoods and hood clamps. Will sell as set of four, or in pairs. Jeff 913-634 8531 jdair@sbcglobal.net
  6. J

    Reno 2020 - or whenever - Sport Class. Just dreamin'

    All carbon airframe with retract gear, already in the works and good for 500+ mph Vne and 1000 HP. Missing link: PSRU that will reliably handle the HP, at reasonable cost Jeff
  7. J

    Reno 2020 - or whenever - Sport Class. Just dreamin'

    It has been the subject of recent conversations, for sure...
  8. J

    Which Scale P-51?

    Hmmm... Have you read the test flight report on the Stewart 51 flown in the UK? (referenced on the current S-51 website). The test pilot (who I assume is trained/credentialed) reports the S-51 stall/spin behavior as benign/normal/acceptable. Any other professionally flown S-51 flight test...
  9. J

    P85 - A New Aircraft

    Thank you for the kind words. Extrapolating full-throttle dyno run bsfc to cruise settings at altitude can be quite inaccurate. Perhaps you could spend time looking into piston engine bsfc theory and how bsfc is influenced by many variables such as engine design, % power production, etc. Lots...
  10. J

    P85 - A New Aircraft

    So, you are saying your engine burns .5 lb/hp/hr?
  11. J

    P85 - A New Aircraft

    Dyno pulls for car magazines and customers are typically brief affairs, lasting 30 seconds or less, and are designed to produce the biggest numbers. Intakes are usually not obstructed with ducting/filters, and optimized long-tube header systems are the norm. In addition, higher "magazine" HP...
  12. J

    P85 - A New Aircraft

    I'll need some more flight time, refinement of general cooling airflow over the engine and refinement of Meredith duct airflow management before I can answer your question. At the end of the day though, I suspect that stacks will be the better choice. We'll see... Jeff
  13. J

    P85 - A New Aircraft

    Flew the new stack exhaust system for the first time on the P85 today - it has been in the works for a while. Wanted to compare it to the 2-into-1 down-pipe system. In the process of installing the stacks, several reasons came to mind as to why this might be the preferred system. I'll follow up...
  14. J

    For Sale New not a barn find Turbine legend/VENOM Complete fast build kit with VENOM wing

    The V8 Legend kit in Tom's photo was owned by a gentleman who intended to finish it with V8 power. Super nice guy by the way. This owner passed away and I helped his family sell the kit - thus Tom's photo. which was used in the For Sale ads. The kit was ultimately sold to a new owner in...
  15. J

    Best Prop Tip Speed?

    The P85 is not really running "your" Chevy engine :) - it is running a 402 cid LS engine, however. Jeff
  16. J

    Best Prop Tip Speed?

    I agree - it's all about critical mach number (helical tip speed) and this can be related to tip chord, thickness ratio, sweep etc, as I understand it. Craig Catto made this prop for the P85, max usable tip speed stated as .94M - flight test showed this to be right on the mark. The old...
  17. J

    P85 - A New Aircraft

    Hey everybody, here's the "scoop"- After many. many years of being heavily involved in the kit aircraft industry it is now time for me roll back my work schedule and semi-retire, at least. That means time to sell rights to our aircraft designs and the prototype P85. I say "semi-retire" because...
  18. J

    Cassutt - looking for anyone who knows anything about it

    Thanks for posting these numbers, good info! What is estimated horsepower if you wind the O-200 to 3250 rpm? Jeff
  19. J

    Cassutt - looking for anyone who knows anything about it

    So.... Performance numbers anybody? Thanks, Jeff
  20. J

    Cassutt - looking for anyone who knows anything about it

    OK I'll chime in... How about some real world Cassutt performance numbers, such as true airspeed at specified density altitude on specified engine type and HP used to produce said speed. For example, O-200 powered Cassutts may be run at varying rpm, so assuming 100 hp as 100% power may be well...
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