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N1BZRich(at)aol.com
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 Posted: Thu Jun 26, 2008 3:20 pm Post subject: July Newsletter and other ramblings |
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All,
If you have been reading the Lightning email list recently you probably figured out that I was back home in Virginia from my most recent trip to Tennessee. The purpose of the trip was to fly the prototype with the new wing tips and that report will be in the next newsletter. Also, the newsletter has a write up on my recent flight eval in the new 2008 demo. Hope everyone will give me some feedback on the newsletter.
I flew home yesterday morning, fully expecting to have at least a 20 knot tailwind since that is the amount of headwind that I dealt with on the trip out there. Well, not so fast Buzman, even though the forecast winds showed I would have at least 10 to 12 knots of tailwind, it really didn't work out that way. During my initial climb to 7,500 feet I was seeing about 10 on the tail, but when I leveled off at 7,500, that tail wind changed to mostly a cross wind from the left. After waiting for a few minutes, I decided that going higher was the thing to do to find the tail wind, so up to 9,500 I went, only to find 5 to 8 knots of head wind. Bummer. Back down to continue the flight at 7.5K with now tailwind help. Actually about two hours into the 3+20 trip the cross wind finally started to change to a tail wind and the last hour of so gave me initially 8 then later 12 knots of tailwind.
Here are the actual numbers from this trip. Speed measured from taking the runway to turning off the runway at home was 168 mph. I ran the engine at 6.0 gph and the actual fuel flow from engine start to engine shut down worked out to 6.05 gph. I would have expected it to be a little closer to 5.8 which is what I normally see, but the extra climb to 9.5 probably took some of that fuel. Also, my more normal cruise altitude when I see the 5.8 would be up closer to 10,000. Any way, your mileage may vary, and probably does.
At the end of this trip N31BZ now has 462.5 hours total time and again I can report that I have had no engine issues other than normal maintenance - oil and filter changes, new plugs every 100 hours, head torques and valve adjustments as specified by the engine manual, and I also changed out the plug wires, rotors and caps at about 250 hours. The current engine manual just calls for them to be changed on condition and looking back at how mine looked then, they are probably good for at least 500 hours or so, especially if you change plugs at 100 hours as I do.
Airframe wise, 31BZ has had no real issues. I still have some gear leg shimmy at around 25 to 27 mph. I currently have aluminum V angles clamped to the gear legs and that has helped some but not solved the problem. Before the V angles the shimmy was worse and occurred at 22 to 23 mph on most landings (except on grass). I am still running the original relatively cheap 500X5 tires that i bought to use on the airplane (yes they do have 462.5 hours on them and still have some tread) but will likely change to Goodyear Flight Custom llls with a 6 ply rating at my next annual in December. Some of you (Jim Goad and Linda Mathias) have had good results switching to the heavier and higher quality tires.
The July newsletter is in draft format and is currently being proofed by Linda. It is another long one (28 pages I think) and thus I will send it to Pete and Jim Langley for them to each post it on their web sites. As soon as I get the list of typos and changes that Linda finds, I will make the corrections and send out a message that you can go to the respective web sites to read or down load. That is what I did for the last issue and no one complained. Also this one is obviously too long to send it through matronics.
Blue Skies,
Buz
PS: You had better be planning your Oshkosh trip. Be there, aloha.
Gas prices getting you down? Search AOL Autos for fuel-efficient used cars.
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dashvii(at)hotmail.com
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| Posted: Fri Jun 27, 2008 3:02 am Post subject: July Newsletter and other ramblings |
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| Quote: | | Quote: | | Buz, I've got a couple articles for a future newsletter that I'll send to you in a couple of weeks when I get a chance to look back over them. Brian W. |
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The i’m Talkathon starts 6/24/08. For now, give amongst yourselves. Learn More [quote][b]
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pete(at)flylightning.net
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| Posted: Fri Jun 27, 2008 6:05 am Post subject: July Newsletter and other ramblings |
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The July Newsletter is posted at www.flylightning.net
Pete
[quote][b]
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N1BZRich(at)aol.com
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| Posted: Fri Jun 27, 2008 7:15 am Post subject: July Newsletter and other ramblings |
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Thanks, Brian. I really appreciate your efforts. Send them when you can. Actually I will probably need something for the August issue since I will be strapped for time when I get back from Oshkosh.
Buz
Gas prices getting you down? Search AOL Autos for fuel-efficient used cars.
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