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  1. J

    13B turbo in a Cozy IV

    The domain changed years ago. See My Cozy MKIV Project My 13B turbo Cozy IV plane (aka Slick Kitten) is still alive and well and living in Rutland, VT
  2. J

    Compression

    Oops. Sorry. I misread the question. You're not planning a turbo. Yes, I think you need to raise it to 9.7 otherwsie you'll be down on power.
  3. J

    Compression

    That's what I did in the turbo rotary 13B on my Cozy IV. 52 hours now and now problems with blown seals etc. But - My 3mm indestructible seals (from RWS) probably help. It's possible to feel / hear the very early effects of detonation and back off the throttle without doing any damage - at...
  4. J

    Benefits and drawbacks of a rotary

    True enough, but the redrive works well as it is, costs < $3k, and it's hidden under the cowl anyway. We have a practical and available solution. I'd rather see Tracy get on with data logging for his engine monitor and the planned auto-tune and split timing (for turbo) features for his ignition...
  5. J

    Benefits and drawbacks of a rotary

    I think Tracy Crooks redrive (http://rotaryaviation.com) is becoming a standard, at least for the RV and canard guys. There are quite a few flying and no failures of any significance yet. Tracy now has upwards of 1300 hours on his, and a few others are coming up toward 500 hrs or so. It's not...
  6. J

    Benefits and drawbacks of a rotary

    Wow! wouldn't that be a dream come true! After spending the past 2+ years working my way through all the issues you listed and more I can, in some ways, vouch for the turnkey sentiment. The turnkey rotary solutions we have seen (Powersport, Mistral) are, however, understandably expensive. My...
  7. J

    Benefits and drawbacks of a rotary

    G'day there down under. It's been a while since I dropped in over on this forum, so perhaps an update is in order. I'm flying a Turbo Rotary (2 rotor REW) on a Cozy IV with Tracy's RD-1A redrive and a very high pitch prop. I had problems (read blew it to bits and trashed one of the...
  8. J

    Registration and Airworthyness

    Hi Craig. I found the guy with the perfect name. John Murphy. :D He can be reached at 321-453-7616 (Work Fax), 321-431-3584 (cell) or 321-783-1515 (Home). John operates out of Merrit Island and will do inspections anywhere in South & Central Florida. He flew down in a Velocity. Cost...
  9. J

    Exhaust Augmenter / Cooling system

    An update I'm now flying my turbo rotary Cozy IV and am pleased to report that the augmentation seems to be working well. Of course it's hard to seperate which part of the system is doing the work, but I'm able to taxi in hot weather without overheating for longer than I expected which would...
  10. J

    How do Finger Brakes work?

    I presume you're referring to me. I'm not holding the nose off (as I could) because I'm landing on a 3000 foot runway and don't have much time for finesse. Holding the nose off will tend to burn up runway quite quickly at 75kts.
  11. J

    How do Finger Brakes work?

    That's exactly what happened to me on the first flight. I instinctivelty reached for the non existent toe brakes I'd been used to. Took a couple of seconds for the brain to figure out why we wernt stopping and push on the main pedals. I haven't done this since. I totally agree with...
  12. J

    How do Finger Brakes work?

    So far I have about 5 landings in Dan Cruger's Cozy and 4 in my own. All were the same. Gentle touchdown of the mains followed by a fairly abrupt nosedown pitch to the nose gear touch. No bounce. Although I've never experienced one, I'd say the "carrier landing" analogy is probably fairly close...
  13. J

    How do Finger Brakes work?

    Perhaps theres some misunderstanding here. On the Cozy the brakes begin to engage only AFTER the rudder hits the stop. Wasn't intended as an insult, just what I think is good advise. As a 1000hr pilot I've found that a few of the changes I made were a waste of time and effort when it came to...
  14. J

    How do Finger Brakes work?

    Rudders (and brakes) in the Cozy are independant of each other. That is you can operate one rudder and not the other, or both in varying amounts at the same time. There's no crosslink. Having flown maybe 6 hrs in a Cozy (just over 1 in my own) I really like the way the system works. When...
  15. J

    Oh, I have slipped the surley bonds of earth..

    Thanks. It didnt. At least not yet. I was informed that my AN fittings won't hold the new freon, so I removed the AC compressor for the time being to help with W & B during initial flights. I'll put it back in when I have time to redo the fittings, and when I've got all the bugs worked out of...
  16. J

    Protection from Epoxy

    Right, Mike. The leading edge is an epoxy join. I'ts been a while.
  17. J

    Protection from Epoxy

    Some use the ply-9 protective cream on the forearms where the expoxy splashes, but the gloves don't cover. I don't see how it would do any harm using both on the hands. Personally I like the latex gloves you can throw away and change half way through a layup. That would be a "flox corner"...
  18. J

    Airplane humor

    Then again.... Helicopters only work because they're so ugly, the earth rejects them or If your wings are going faster than your fuselage, something's wrong. or Helicopters are for people who love to fly, but don't have anywhere to go.
  19. J

    Oh, I have slipped the surley bonds of earth..

    I haven't been over here much lately, but I'm sure some of the regulars will remember who I am. I'm happy to announce that, after just over 5 years building, Cozy IV plans # 757, powered by a Mazda 13B turbo rotary engine, danced the skies this morning in a short but sucessful flight. I've...
  20. J

    Exhaust system alloy

    Not at all. Cast iron is just what Mazda supplies. I think you can get an inconel manifold (or is it stainless) from AU for a TO4 turbo, but it had better be robust.
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