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 Previous Item - Orca Search
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Lake Tahoe in a Searey |
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Fred Glasbergen - Dec 07,2004
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Just got back from Sacramento training a new Searey owner. On Saturday the weather was good enough to fly out to lake Tahoe and see how the Searey performs at an elevation of 6500 feet. The searey is one of the heavy ones with a empty weight of just over 900 pounds. It has a 914 with a three blade inflight warp drive prop and a B hull. The atis was giving the temp. at 26F and density altitude of 6700 which was propably for the airport which is just above the lake altitude. With a no wind condition the aircraft got of in 30 seconds, at least twice as long as from sea-level. There are very nice lakes and rivers to fly to, I am sure we are going to see more searey's in California.Cheers Fred Glasbergen<!-- >'"><br><font color=red size=6>' or > missing in user HTML. Please fix the HTML.</font> -->
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Kenneth Leonard - Dec 08,2004
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Fred, why would the 914 be affected by altitude? Or is it not the engine, but the wing that was affected?
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Jon Ladd - Dec 08,2004
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It's the air density (wing) not the turbo.
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Don Maxwell - Dec 08,2004
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It could be the prop pitch, too, Jon. At least, that's what I discovered last summer while flying my 914 across Ohio at 9500 feet to catch a big tailwind. My IAS began decreasing as I climbed above 8000 feet, and I had to throttle back to keep the rpm at 5500. If I'd had an inflight-adjustable prop, I could have increased the pitch and kept the power up without exceeding the 5500 limit.
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Jon Ladd - Dec 08,2004
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You are right of course Professor! If he'd had an IVO prop Fred could have repitched on the beach prior takeoff. <br />(Being a flatlander, I wonder if he ever does that?)<br /><br />I wouldn't be concerned about an overboost/over RPM for a short period for takeoff however. The Factory ship has manual waste gate control. Paige and Kerrry often Overboost on takeoff (either accidently or to show off!)<br /><br /> Last winter we were skiing at Heavenly Valley and I watched a Grumman Goose do touch and goes on Lake Tahoe. I was dying to go for a ride!<br />
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Don Maxwell - Dec 09,2004
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Jon, have you ever tried water landings and takeoffs at high altitude in your SeaRey? I keep wondering about Lake Titicaca, elevation 12,500 ft. (This is a purely academic wonder, you understand. Of course!)<br /><br />The only thing I've been able to find about landing on Lake Titicaca is a brief reference to a touch-and-go in a Catalina: <a href="http://www.catalina.org.uk/stuyvesant.htm">http://www.catalina.org.uk/stuyvesant.htm</a> It's a fascinating story, with a good bit about another high-altitude landing, at La Paz. The entire website will probably delight flying boat lovers. (Be sure too look for 'Our Track Record' / 'The Italy Experience' for an excellent description of water operations.) (Here's a different version of the stories, but with lots of photos: <a href="http://catalinabookings.org/documents/prospectus.pdf">http://catalinabookings.org/documents/prospectus.pdf</a> ) Just scroll down past the prospectus for the stories.<br /><br />So a related question is: What's the highest altitude water landing done so far in a SeaRey? <br /><br />Rotax says the 914's turbocharger will produce sea-level power at about 9000 feet.
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John Robert Dunlop - Dec 09,2004
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Good on you Don! A great story!
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Walt Bates - Dec 10,2004
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Lake Titicaca - I was there once. The view is great but you have to watch where you step.
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Dennis Vogan - Dec 15,2004
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Fred: Did this new trainee forget his wheels too?
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Fred Glasbergen - Dec 24,2004
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Dennis it did happen. Here was the senario. A major weather system was moving in and the wind was forecasting up to 20 to 25 mph. In the morning it was still very flyable but there where many places on Folsom lake which where getting a little to rough. On the way back to Auburn the atis was giving the wind at 10 to 12 mph at a 90 degree crosswind. Craig was getting worried about how many bounches he was going to get. Talking to other pilots about the crosswind he decided to follow an instructor who was practicing crosswind with his student. I assured him that I would help him if he had trouble keeping on the runway. On final he mentioned again about the bounce he anticipated, well at about 50 feet I said that I have never seen a searey bounce when the fiberglas hits the pavement, Horror, go around, hopefully that epsisode will last a long time.<br />The same thing happen'ed to a 747 captain from Cathay who owns a searey in the Philapines. He was here on a layover and leaving that night on a midnight flight back to Hong Kong. He was probably on mandatory crew rest but wanted to get as much Searey time as he could so we had just taken off from our strip and he asked if we could land in the river where we had landed before which is only about two minutes after take off. The gear never came up and he was just devistated that this could happen to him. He was so upset with himself that he was going let the F/O do the take off out of YVR and landing at Hong Kong. There is a lesson here, do the checklist no matter what.<br /><br />Cheers Fred
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