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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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 Posted: Sun Mar 22, 2009 9:33 am Post subject: MKIII Performance |
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Got out and enjoyed an hour of wonderful last light flight yesterday.
Perfect day for flying. Spring is bursting out, air was clear and cool,
about 65F.
912ULS was turning 5,500 RPM WOT straight and level flight.
Climbed 1,500 FPM at 70 mph indicated, 5400 RPM.
Climbed 1,800 FPM at 50 mph indicated, 5300 RPM.
Floated halfway down Gantt International Airport in ground effect with 40
degrees of flaps. Demonstrated no threat of deadly Kolb Quit.
Had 10 gals fuel on board, solo.
john h
mkIII
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John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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mdnanwelch7(at)hotmail.co
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| Posted: Sun Mar 22, 2009 10:04 am Post subject: MKIII Performance |
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> Climbed 1 C800 FPM at 50 mph indicated C 5300 RPM.
John C
Can't say I've ever heard of such climb out perfromance on a Kolb!! Must have felt like an elevator!! 1800 FPM?!! Must have been a sight to watch from the ground.
Mike Welch
Windows Live™ SkyDrive: Get 25 GB of free online storage. Check it out. [quote][b]
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Sun Mar 22, 2009 10:14 am Post subject: Re: MKIII Performance |
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Not bad for an old bird.
Those are "indicated speeds and climb rates". How accurate are they? I don't have a clue, but probably pretty close, close enough for me.
I thought they all climbed like that with 912ULS.
John Bickham has a mkIII that climbs like that with a 912UL. I had a hard time keeping up with him last year at the Nauga Flyin.
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John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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lucien
Joined: 03 Jun 2007
Posts: 721
Location: santa fe, NM
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| Posted: Sun Mar 22, 2009 10:45 am Post subject: Re: MKIII Performance |
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| John Hauck wrote: | Not bad for an old bird.
Those are "indicated speeds and climb rates". How accurate are they? I don't have a clue, but probably pretty close, close enough for me.
I thought they all climbed like that with 912ULS.
John Bickham has a mkIII that climbs like that with a 912UL. I had a hard time keeping up with him last year at the Nauga Flyin. |
For what it's worth, my FSII would do around 900fpm sustained at sea level, which was pretty good considering it had come out at a rather heavy 440lbs empty weight for the original builder. Part of that was the C box with clutch he'd opted for for the 3 blade warp drive prop. This had prompted the addition of 10lbs of ballast to the nose to get the CG to come out right.
Even out here before I sold it it could do between 300 and 400 fpm climb. Again pretty impressive given the 503 is about a 377 at this altitude.
The Kolb wing is definitely made for lifting.
As for the 912ULS, I think it's about the best you can do for a 100hp engine period. The only other aircraft motor Rotax made that could beat it (and smoke it too) was the 618 and (unfortunately IMO) it's not in production anymore. And it couldn't do it for 2000 hours + either besides.
Since this is the Kolb forum I don't want to brag about other planes, but my 912ULS gives me similar performance, I'll just say that.
LS
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LS
Titan II SS |
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John Bickham
Joined: 10 Jan 2006
Posts: 170
Location: St. Francisville, LA
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| Posted: Mon Mar 23, 2009 3:47 pm Post subject: Re: MKIII Performance |
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Hey John H, et all,
I didn't know I could do that. I thought you were just trailing in formation, holding back. You and John W always stuck me out front so you could hang back, laugh, and keep a good eye on me. Probably would have been different if I didn't have the home field advantage. I wasn't loaded down with my traveling gear, toothbrush, and such. Ms P'fer also carries some extra ounces in some of Brother Jim's tweaks.
I do like the 912UL for the fuel burn and the little lower octane required. Was really liked it last summer when gas went sky high. A lot of days, I was the only plane flying around Baton Rouge. You S guys can out run me, but you have to burn a bit more fuel to do it. Might be interesting to compare our fuel bills on our long runs in May. I'll probably lag behind by a handful of minutes getting to our destinations but you will take a few more seconds (gallons) to top off. At least you'll be first in line for the restroom.  I might feel so guilty that I'll buy you a soda or something.
Bruce C and I are trying to get things in order for mid-May. He had to make a second tank. I finished a couple of fabric repairs on the right wing and flew this am. Landing to the NE at Nauga is a lot easier with those trees gone. Waiting on power company to put up powerline markers. Big orange balls, like a real airport!
We are planning on making some overnight dry-runs to check our gear out before we head west. May come visit you guys around Montgomery. come visit if you get the notion.
C-ya soon. Everybody stay safe while having so much fun.
Do not archive.
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Thanks too much,
John Bickham
Mark III-C w/ 912UL
St. Francisville, LA
I know many pilots and a few true aviators. There is a distinct difference that I have the greatest respect for. |
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John Hauck
Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)
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| Posted: Mon Mar 23, 2009 5:17 pm Post subject: MKIII Performance |
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| Quote: | I didn't know I could do that. I thought you were just trailing in
formation, holding back. You and John W always stuck me out front so you
could hang back, laugh, and keep a good eye on me.
John Bickham
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Folks:
Meet John B, the new flight lead for our flight to MV, the Rock House, and
other far flung parts of the world. 
Better watch out now. I talked to Daryl at Warp Drive this morning. We
were going to recondition my blades, but I asked him for new 72" blades
instead. Now you gonna really see old Miss P'fer climb her heart out with
the big prop. It will be somewhat noisier, but will climb and cruise a
little better. Adding an inch to the tiny taper tips doesn't make much
difference in weight, but it does in performance.
john h
mkIII
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John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama |
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