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hmanvel

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Everything posted by hmanvel

  1. Lynn, do you see a performance boost at just one RPM? Or across a range? I had a 4 into 1 tuned header system built for my front engine (Defiant) and didn't see any improvement. However I recently flew with wide open throttle for about 5 minutes and was surprised to see a very big increase in front engine RPM. I need to test further. But I had no performance gain on takeoff, climbout, or cruise. But at 2700+ rpm it seemed to come alive.
  2. Jon, Ditto! Can we get an update?
  3. I built one and used it in my Defiant. Never could get it working properly. The airplane held altitude better without it than with it. The problem with it is that there are no solid state gyros or acceleration sensors, just a pressure sensor. Doesnt have the immediate finite control that is required (at least for my airplane).
  4. I raised up the rear to the plans-level spec for weighing and weight and balance purposes. All the Rutan w & b specs are based upon a level fuselage, which means level on the bottom of the fuselage just aft of the fwd firewall. HM.
  5. Many Defiant Builders have shortened the main gear, but I don't think I've heard of a 6" reduction. 4", is more common. I did mine 3 1/2" and that seems about right on my airplane. The plans built plane has a nose down attitude which definitely lengthens the takeoff roll. Harry Manvel.
  6. Hi. I was asked to visit this site to say that. I built and fly a Defiant, and while I can't think of where the aircraft specs might be found online, I probably could scan an old Rutan flyer and post it. But the numbers in the Rutan flyer don't mean alot due to differing weights, shapes, etc. Contrary to one of the posts I read, there are probably more than 30 flying world wide. And there are 6 or 7 that are "almost done." Look for a bunch more Defiants at Oshkosh in the next few years. They take forever to build but they are worth it. Harry Manvel Defiant N2HM
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