rv10builder(at)verizon.ne Guest
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Posted: Thu Oct 07, 2010 2:24 pm Post subject: Ballast-really needed for test flight and beyond? |
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40 hours for someone like me that has an experimental engine- (so there goes the Vans spec) 25 for a certified engine and prop- not experimental like many have bought from Vans . I need something to do for those 40 hours so why not use that time to do what the flight test period is designed for.. Ballast is probably one of many things we'll need during the test period, a camera is another and lastly, confidence building as we verify everything works right. I'm with those that bringing your family along, without having a plane fully tested, is a big mistake. Read Tim's commentary on someone who chose to take shortcuts along the way and really did not use the flight test period correctly- we can learn from others mistakes, not doing so will leave one vulnerable to do the same thing. Leave the ballast out or not completing different CG test flights, you aren't doing a full test of the plane. Finding out how a aft CG plane feels like with people on board is not the time to discover it.
Cessna had a certified plane- all built the same with the same engine and weights. we are all "one offs" some have barrett, some have Lycoming, some have a Chevette some even a corvette engine, my engine is a Aztec engine cleaned up, in all these cases (except for the chevette engine which I doubt would even move a glider) we need to know the take off and landing settings, we need to assure our gizmos we added for doors and such actually work etc.. we are literally testing our version of the Vans plans.. If the FAA didn't think so our repairmans cert could work on any RV-10.
From: DLM (dlm46007(at)cox.net)
Sent: Thursday, October 07, 2010 11:20 AM
To: rv10-list(at)matronics.com (rv10-list(at)matronics.com)
Subject: Re: Ballast?
why do all this testing at all? If one builds to the plans and uses the hardware provided, why so much testing? A unique design "homebuilt" would require complete testing. An RV kit built to Vans plans and rigged to Vans plans should perform very closely with the numbers as provided by the kit manufacturer. At least as closely as Cessna did with their marketing driven operating handbooks in times past..
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