Wednesday, September 12, 2007

Nosegear accident

First, here's the picture of the alleged noseover in the UK reported on the RVSQN Yahoogroup. As I understand it, we don't know for sure that this is a noseover, just that it looks like the result of a noseover.




Meanwhile, there is another report of a noseover in the UK, according to the RV Squadron Yahoogroup. I haven't gotten too excited one way or another as the debate has unfolded, but I have concluded that I absolutely, positively can not land my 7A (whenever it gets done) on a turf runway, which is too bad since I love turf runways.

Well it happenened to me today...... Some of you may have followed my trouble getting the old nosegear off to fit the new one. With all the trouble, we had resigned ourselves to leaving it to the couple of weeks prior to the permit renewal December), so we could continue to fly the aircraft over the summer.

Today, went from Mount Airy to Eddsfield, had a coffe and came back. Landed 07, uneventfully (I may go so far as to say skillfully, as I was doing my best to impress my wife, who hardly ever comes with me!!!). We finished the roll out, and back tracked.
Coming onto the apron area, there is a very slight uneveness to the
surface. The aircraft started to pitch up and down, and then the
grinding noise started. Chunks of mud started coming into the air
with the pitch up movement. At no stage did I think we were going to nose over, but it was in the front of me mind, as I have been
paranoid about this for months.

Thankfully all settled back down, and be managed a taxi to our
hangar, with a few more slight grinds. I knew instantly what the end result would be..... a yolk that had tucked under.

The conditions were firm / hard grass due to chalk under bed and a
hot dry week. Speed - normal taxi speed, no faster. Stick back ,
power idle. Nose wheel pressure 35 psi 8 days ago when I last
checked, but it retains pressure very well. I will check it tomorrow when I go back to investigate this further.

The main problem is Stick back does nothing whatsoever at normal slow taxi speed, with power at idle. I am sure it lightens the nosewheel with more than 1200rpm, or 20mph+, but otherwise not. If this had happened at higher speed, it would have flipped. I have a few phots but can not post till tomorrow, when I get away from work. Hopefully, I can also go back to the strip, and check the
area inch by inch.

I had a few misgivings about leaving the nosegear this long, and I
remember Roys posts previously about changing gear prior to the DRM flip.

It is clear in my mind now that it is not pilot technique for the
main part. Nearly all grass strips will have some area of evenness
somewhere similar to this. The wrong speed and power, and the stick position becomes academic.......

Others may disagree.

Justin

RV accident reports issued

The NTSB has completed investigations on one RV accident.

Summerville, Georgia
This accident happened in May 2007 when an RV-6A stalled while landing. No secrets here. The pilot didn't maintain sufficient airspeed on final.

Meanwhile, I hear there's been another nose-gear collapse on an RV in the UK recently. I'm trying to get more information on it. That should reignite ye olde nosewheel debate.

Tuesday, September 11, 2007

EAA newsletter review

On my short list of favorite EAA and RV monthly newsletters, you can count EAA Chapter 242 in South Carolina.

The newsletter rarely gets linked on the Web site in a timely manner, but if you just change the URL around from the latest one listed, you can find the latest one produced.

The August newsletter features Jim Comer's first flight in his 7A.

Oh, did you think I was done? Oh, heck no! EAA Chapter 90's newsletter this month has an Oshkosh review. In addition to be a fine production, it also mentions the RV BBQ. Yahtzee! Here it is. You know, I was looking at Glenn Brasch's pictures he took at Oshkosh the other day. I really miss Oshkosh.

Continuing...

The Lippisch Letter, the newsletter of EAA Chapter 33, has a nice write-up of the AirVenture Cup race, Steve Ciha's article on building a third RV, and a nice little trip-write-up by Mark Navratil.

In EAA 1410's September newsletter, Ross Farnham takes a look at alternative engines. For you RV-9A builders, there's a fascinating test-flight card.

In the unlikely event someone actually reads this blog, feel free to post the URL of your chapter newsletter in the comments section.

Monday, September 10, 2007

Medical update

It's been a long time since I've flown. As I've indicated before, I encountered Meniere's Disease (vertigo) while at Oshkosh in January 2006. The symptoms alleviated enough that I took what I thought could well be my final flight in late February (the landing was not a good one) and I've grounded myself ever since.

With symptoms under control -- as near as I can tell -- I started the process of renewing my Third Class FAA Medical Certificate many months ago and, as expected, it resulted in the FAA asking for more information about Meniere's.

"Oh great," I thought, "now I get to jump through hoops for the federal government.

But, to my great surprise, it was less than a month before the FAA let me know that they were satisfied that Meniere's posed no problem for me -- flying wise -- but they noticed in the ECG (a copy of which I sent them and I probably shouldn't have) -- an abnormality that they now want to determine the future significance of (wow, there's a tortured sentence).

Of course, this was all an issue between me and the FAA in 2002, but apparently I have to go through the motions again.

So tomorrow morning, I have a stress test and cardiovascular evaluation scheduled. Assuming I don't go toes up, I may actually get to fly again.

I really need to get in the air again.

Sunday, September 9, 2007

How to cut the canopy



My RV pal, Neal George, sent this along today. You know, I have no doubt at all that if Neal actually tried this, he'd probably end up doing a darn good job.

Friday, September 7, 2007

The quest for perfection



Yesterday I finished -- I think -- doing any more cutting of plexiglass or drilling of canopies. I finished the final cut on the aft window (I left a little more on than the plans suggest) to parallel the cutout in the top skin.

I sanded the edges, countersunk the holes which I drilled a few days ago.



It's been amazing, really, how many times the plexi has gone on and off the fuselage, but I've enjoyed it. However, if I read one more Web site that says the "gap between the forward and rear canopies was perfect," I'll scream.



Perfection, though I strive for it, does not come easy to me. In fact, it doesn't come at all. My gap on the passenger side is about 1/8" since I accidentally sanded the wrong edge when getting the aft window to fit over the brackets that hold the rollbar in place. From there it alternates between about 1/16" and slightly larger.

But you know what? I'm happy with how it looks and I'm happy with how it came out and I've grown comfortable in my later years with some of my imperfections.

Bob Miller's RV-8



Bob Miller, I believe, was one of our attendees at the RV BBQ in Oshkosh, so it was nice to see him get some props (no pun intended) in the Fargo Forum (a pretty decent newspaper, by the way), this morning.

He had followed all the directions and logged plenty of wrench time – five years and 2,826 hours, to be exact – to prepare the sporty single-engine airplane for flight.

Nevertheless, “There are so many horror stories about people taking off, and the engine’s never worked that hard, you just don’t know how it’s going to go,” he said.

Turns out it went just fine.

Tuesday, September 4, 2007

MN Wing newsletter is out



I'm thinking one of these days of selecting my All-Star team of RV and EAA-related monthly newsletters. There are, when you get right down to it, only a handful of them.

More often than not, when I was spending a lot of time browsing them for the RV Builder's Hotline, I'd go to a chapter's Web page and be greeted with "Come to the Father's Day Pancake Breakfast, June 11, 2000!" Seriously, EAAers, how can you let that happen?

Anyway, back to the subject, fine newsletters. Doug Weiler singlehandedly puts out one of the nicest newsletters as president of the Minnesota Wing of Van's Air Force.

Doug recalls his early Oshkosh trips, provides several first flight reports, Pete Howell -- who writes the greatest trip stories -- tells of his trip to Montana in his RV-9, and Pete also has details of an amateur-built headset.

You can find the newsletter here.

Friday, August 31, 2007

Hotline and moi

Life is spinning faster and faster and it's harder and harder to keep up. Ever felt that way? I'm starting a new gig at work within a month or so and it's taking more time away from other pursuits, and I'm racing to get the RV canopy done before the cold weather comes. Time is hard to find.

Earlier this year, I ended the RV Builder's Hotline as I'm trying to pare those things that might give me more time. Rob Riggen, bless his heart, created a bunch of new tools and took on more of a role, in order to keep it going.

But I have found that it still has required more time than I'm prepared to give it to have it be a fair representation of my work and interest in it, so I told Rob yesterday that I won't be able to support it with writing and browsing, at least on much of a regular basis.

If you'd like to help Rob in the endeavor, however, I'm sure he'd love to hear from you.

Friday, August 24, 2007

Just looking



This week I drilled the canopy on my RV-7A project to the rollbar and side frame. In the process of documenting it in my Kitlog Pro log, I discovered that I've just rolled passed the 1,750 hour mark. I guess that's a lot (I noticed my friend who runs the Dignity Web site was at 1,000 hours at this point) , but over 6 years, probably not unusual. That's actual building time. It's not "just looking" time.

I think I'm not alone on this undocumented part of building a homebuilt airplane. There's building time. And then there's "just looking" time, and I tend to think the latter amounts to more than the former.

Here's how it works: you spend a day (or an hour) as I did this week working on a particular component. Around 5 or 6 p.m., you cleanup, head inside, take a shower, and prepare the spend the evening with your family like "normal" people. Perhaps you watch a little TV.

When the commercial comes on, you go back to the garage -- or maybe you fumble around for some excuse, like taking the dog out -- and you look; just look, at what you did during the day.

Truth be told, I do this a lot. OK, I do it every night and sometimes I do it during the day, and always after I get up in the morning to let the dog out (no, he really has to go out!).

Ken Scott at Van's always says "touch your project every day" as a way to keep progress going. He should've said "or just look at it."

The canopy process, while intensely enjoyable (everything on this project is to me), has not been easy and without challenges. During one of my "just looking" forays last week, I decided to take a piece of scrap plexi and drill it with the cordless (hey, they were both just sitting on the workbench as I was walking past to let, umm, the dog out!).

Snap! It broke easily. I went back inside and watched the rest of the movie, but darned if I can remember what it was about. I was too concerned about what was to come. You can read all about it on the YGroup.

Suffice it to say, the challenge presented itself and -- after I "grew a pair," to quote my buddy, Darwin Barrie -- the challenge was met.

Captain's log: 8 hours of building time, 8 hours (so far) of "just looking" time.

I mean, there it is, sitting out there on the workbench. A finely drilled canopy, with countersunk holes. I even ran some sandpaper through them to reduce any chance of cracks. I did a pretty good job, for me anyway. It's worth looking at.

And it's not just the RV project. I have a hangar at South St. Paul's Fleming Field that, other than some wings and a new workbench, is empty. I stopped there four times this week. There really wasn't anything to do there, although I pretended the hangar needed sweeping out... again.

I just go there, sit, and look. It's a hangar. My hangar, sort of. Someday it'll have a plane inside it, I think. We'll get together early in the morning, crack the door to reveal a splendid dawn, fire it up, and go fly.

Or I'll just sit and look at it.

Sunday, August 19, 2007

Van's Homecoming coverage

Doug has done his usual outstanding job on Van's Air Force, documenting everything that happened this weekend at Van's Homecoming. This time it was held at the Independence Airpark. I'm pretty sure in my next life I want to come back wealthy enough to live on an airpark. Guess I'll have to figure out a new line of work, though.

Anyway, here's Doug's pictures of the RV-12, which he got to fly (check that, in my next life, I'm coming back as Doug Reeves), here's video of his landing, and here's his account of the Friday BBQ.

Doug told me in an e-mail that he was spending the day at the Portland airport and wouldn't be home until 10 p.m. Way to take one for the team, Doug! And thanks for your hard work.

I also found this blog -- My Left Nut -- which had some images and accounts of the action this weekend.

I'm hoping EAA Chapter 292, which hosted the event, posts some pictures soon, too.

Too spooked to drill

It's 57 and rainy in Minnesota today so I fired up the Buddy Heater in the garage to see how hot I could get it. By late afternoon, it was up to 74, so I put the canopy back on the fuselage and lined it up with an idea that maybe -- maybe -- I would drill it. Working with the plexi these last few months, I've gotten a little more confident that maybe this idea was wrong that if I so much as look at it the wrong way, it'll crack.

I thought I was happy with the aft edge but I'm really not. It lines up fine on the pilot side, but I took a little too much off the passenger side and it's slightly forward of the line I drew in the middle of the rollbar. So I'm thinking a little more about this and what to do. But that's not my problem.

You know those builder sites that show a builder drilling some scrap plexi and noting that, try as they might, they couldn't get it to crack? I had no such "problem." And now I'm way too spooked to drill this thing.

Using an Avery plexiglass bit in the cordless drill, I put a little pressure on this scrap piece -- not a lot but I'll bet it's not much more than I'd put on pushing in the side of the canopy as I drill it.

This first time, I drilled at a normally speed, and just before the bit broke through, snap! The piece flew about 4 inches.



Here you can see that it broke just as it was about to break through.



Next, I didn't put any pressure on it, but drilled at the same speed. As you can see -- hopefully -- cracks developed:



I experimented a little more, not with putting less stress on the plexi, but slowing down the drill speed. I got it down to where it was turning very slowly, and while it took a long time to drill through it, it didn't snap this time, even when I put on a fair amount of pressure.

Obviously, there'll be no canopy drilling today. And if I can get the garage up to 90 degrees sometime this week (supposed to get hot again), I'll run these tests again.

But, boy, am I scared to death now.

Thursday, August 16, 2007

Therapy



I've written in the past about our RV projects and the persona they take on as our "children." In the last month, I've noticed another role that they -- well, at least mine -- have assumed.

My goal for this year was to get the canopy "done," to have everything come together so that when the prairie heat of July and August arrived, I'd be ready to make the big cut. I really wanted to have the cut made before Oshkosh.

And, sure enough, it was. The canopy frame, which I started in the cold of February, had a canopy on it -- sort of -- by July. On July 8, I made the large cut, cleaned up the edges and put it on the airplane. I took the usual pictures, marvelled at how far ahead of schedule I was, and left it to sit... and sit... and sit. So much for the schedule.

But, truth be told, getting the RV BBQ organized pretty much demands full-time attention in the three weeks leading up to Oshkosh. Then there's the week of Oshkosh itself. Then there's the week after Oshkosh, a return to work, and a usually listless Bob trying to get reinvigorated in life when there's not the sound of someone's radial engine capturing my attention and lighting my fire.


And this year, on August 1, we lost the I-35W bridge in Minneapolis. I was at work that night, almost ready to leave, when I saw the first images. I worked most of the night on the Web site, handled a few interview requests from the BBC and CBC early the next morning, and was gone by 8 a.m. That's a 22-hour day. Not much room for building.

A day later, my youngest son was hurt, apparently, when he, his brother, and their roommate were mugged while walking home from dinner. Now, I'm guessing there was a little more than random violence involved here, but at 9 p.m., my oldest son called to tell me that he'd taken Patrick, my youngest, to the emergency room in St. Paul.

"Why?" I asked.

"Because he can't remember anything of the last year," he said.

Let me just point out here that it's amazing how irrelevant things that you thought seconds before were important become when you get these sorts of phone calls.

When we arrived at the hospital, we found a tragic version of "Ten Second Tom" from "50 First Dates." Patrick could remember no more than, perhaps, the last 40 seconds, only a few more than your average guppy.

Every 40 seconds, approximately, we'd have the same conversation.

"Why I am I here?"

"You were mugged?"

"By who?"

"Four guys"

"How come I still have my wallet."

"They weren't interested in your wallet."

And this would go on, until finally he got into a room at about midnight and CNN was on, showing non-stop photos of the bridge collapse. Patrick is an EMT and was on call at his "house" to respond to the bridge if there were more victims. But he wasn't needed so when his shift was over, he left and went home, had dinner, and got himself mugged.

But, of course, he didn't know any of that so when he saw the bridge collapse, he'd get up and want to get to the bridge, sure that his crew was there.

"I've got to get there," he'd say every 40 seconds.

"You were there," I'd say.

"What am I doing here?"

It was a couple of days before his memory came back, but not before Mom and Dad spent hours answering questions and then, when we left to get some sleep, picking up the phone every 40 seconds to hear a crying son, frustrated because he couldn't remember anything. I'd talk him down, and he'd hang up to get some sleep. Then call again a minute later, not knowing he'd just called.

It's amazing, really, how marvelous the brain is. It determines what data needs to be dumped when, figures out how far back it should dump, and then -- when the coast is clear -- brings its systems (if you're lucky) back on in stages. Fascinating, really.

Anyway add all this together, a 22-hour day, the post-Oshkosh letdown, a son getting the garbage kicked out of him, the general absence of routine, and you have an RV builder without focus. Even after things had calmed down and I'd gotten some sleep, I found it hard to pay attention to much of anything. Even driving the car felt strange to me.

And then, last week, I dragged myself out to the garage, dusted off the canopy, cleaned up the workbench and rolled up my sleeves, only to be shocked by the note on my instructions that the last time I'd touched the project, was exactly one month ago.

My project was kind to me. It didn't make me feel guilty for abandoning her for the glitz of Oshkosh or the duties of a father with a kid in the hospital. It seemed to know that I'd be back, and when I did return, she'd be ready.

I rolled out the plans, made up a couple of workbenches and picked up where I left off. Only I didn't do it for minutes; I did it for hours. After weeks without focus, my project gave me a good slap upside the head, and I was able to shake the cobwebs of life and refocus my own brain again, which in this case happened to be building an airplane.

An EAA technical counselor at EAA Chapter 54 in Lake Elmo, Minnesota, Bill Schanks, always refers to flying as "therapy." I picked that up, too, referring to the time I spend with my RV "therapy." I think it's one of the reasons I'm in no particular hurry to finish. I like spending time building. I like being around something that's patient, and knows that no matter what else goes on, I'll be back, embracing the sameness and consistency of a part of my life for the last six years.

It's comfy, it's home, it's like an old shoe, or returning home from college for the first time to find out your mom hasn't changed your room, and the old dog still is excited to see you.

It's therapy. And before it becomes your airplane, it's your therapist.

And there's no co-pay.

Wednesday, August 8, 2007

Racing winter

Now that Oshkosh is over, the heat is on to beat the cold. All year, I've wanted to get all the canopy work on my RV-7A done while it is still warm enough to cut and shape it without significant danger of ruining it. I made the "big cut" before Oshkosh but haven't done anything since. Of course, there was this matter of a bridge falling down that caused me to divert my attention to other pursuits. And last Thursday night, my youngest son was mugged as he walked home from dinner by 4 guys (he was with my other son and their roommate) and he lost all of his memory back to April and his brain was data-dumping all but the last 20 seconds (think of "10-second Tom" in "50 First Dates."). It was very scary. He'd see the bridge collapse video in the hospital and get shocked each time he'd see it. Being an EMT, he kept trying to leave to be with his crew at the bridge site (we had to tell him it happened several days ago every 2 minutes). Anyway, very frightening but fortunately he's out of the hospital now and seems to have his memory back.

So last night, when the temperature hit 94 during the day, I eschewed the "National Night Out" block party on my street and trimmed the sides of the canopy to fit. The dimensions, as near as I can tell, came out fine.



As usual, though, I have some questions:

Fitting the side of the canopy through the "ears" at the forward end of side rails, it seems to fit fine, thanks to some hole-elongation techniques I learned on the Dignity Web site.

But there is now a very slight gap as it curves in toward the center...



I'm thinking that if take a sliver out of the very corner (right after it passes through the "ears"), I can eliminate that gap. But I'm not sure. I can also push lightly down with my finger and remove it, so I'm also thinking when I put the "clips" on, it will suffice. What say you?

In looking at the sides, the canopy wants to bow out. Is this normal? A strip of duct tape won't hold it against the sides for more than a few minutes and it takes less pressure to hug it tight to the side as you go front to rear, but it requires a pretty good force around the ears to keep it tight. Is that normal? Does this present a stress problem when I drill here?

Here's a shot looking from the front back to the "ears" on the side. Sorry about the blurriness.




And here's the side looking toward the front...




All advice cheerfully considered.

Monday, August 6, 2007

How to survive an in-flight fire

These sorts of stories scare me; especially as I get closer to beginning the wiring on my RV. Good job by this gentleman getting down safetly. Here's the whole story.
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