Average OT Flight Duration?

What is an approx average flight duration for an OT flight, with fewer tricks, but more reps than PA? Need to calc fuel volume.

Thanks,
Kim Mortimore
Alameda Aeronuts

Kim...
I have judged several of these events, and it seems to me that it's all over but the shouting at 5:00 minutes....4:30 usually.

I had a Super Clown Fox .25 that completed the OTS pattern in 4:10....if I did two three laps after the square, I knew that I had forgotten a maneuver.

See Ya

Yep, I agree with Peabody. I timed a lot of flights last October at Huntersville and most were on the ground in five.

OTS is really fun to watch compared to the regular pattern, something about those old ships is really cool!

Most, as they said, are over in less than five minutes. Out of habit, I installed a four ounce tank and flew for ever, it seemed, after the "square loop", or rectangle in OTS. A Fox .35 in a Barnstormer will do just fine on a 3 ounce to 3 1/2 oz tank. With it going 4-2-4, it will use all the fuel in just under 5 minutes. Of course it depends on lyour needle settings and type of fuel, altitude, weather. How's that for shimmy shammy sidestepping??? LOL:P

Start the engine, maybe fiddle with needle just very briefly, out to the handle, we're looking at being done in 4:30. Rarely is there a good reason to fuel for more than a 5-minute flight. Even though it is done all the time. Sigh...

A three oz tank is what I use of 40-size engines. One can always put less fuel in a too big tank. On the other hand, there are a number of OTS airplanes where installing an adequate tank is a challenge. The times people are saying sound about right.

>A three oz tank is what I use of 40-size engines. One can
>always put less fuel in a too big tank. On the other hand,
>there are a number of OTS airplanes where installing an
>adequate tank is a challenge. The times people are saying
>sound about right.
>
>Jim

I don't think my stock FP .40 would quite make it on 3 oz. I'm using 2.8 oz for Beginner + 10 laps (different plane). I haven't fired up my Randyfied FP .40 yet.

What 40-size engines are you referring to? I'm guessing that my K&B .40 ABC (which I also haven't fired up) would be a guzzler, since schneurles tend to get better mileage on average than older loop/cross scavenged engines.

K&B 4011 and Tower 40. I should say that I don't do 4-2-4, but rather a fat 2 all the way. Muffler pressure and uniflow tank. Timing a run on the bench with a known amount of fuel will give you a ballpark idea on air run time.

My opinion is that almost anything smaller than a .60 should use a 3 oz. tank, or good fuel management, to fly OTS...let's not bore the judges.

See Ya