Nobler 9 second laps.

My friend Phil timed my laps and total flight time today. This is the first time it has ever been timed. I have counted it several times and usually get a count of 6. I have a 4 oz fuel tank on the Nobler with an OS 40 LA engine and a 11x5 prop. The engine is running 2 cycle all the time and it seems to be flying very slow much slower than my Flight Streak and Ringmaster. Total flight time is 6 minutes. If I change the needle adjustment to get 4-2-4 flight time is about 4 minutes. Phil timed the Nobler at 9 second laps. He thought that was wrong and timed it 2 more times and got 9 second laps each time. That seems too slow I did the math on that and its less than 30 mph or I made a math mistake. I can't beleive thats correct and if it is its hard to beleive the airplane will fly at 30 mph. LOL, I still can't do a square loop at this speed.

> Phil timed the Nobler at 9
>second laps. He thought that was wrong and timed it 2 more
>times and got 9 second laps each time. That seems too slow
>I did the math on that and its less than 30 mph or I made a
>math mistake. I can't beleive thats correct and if it is
>its hard to beleive the airplane will fly at 30 mph.

I can't beleive it is correct, either. A Nobler with an OS40LA/11-5 in a two-stroke would be more like 4.5 second laps. But it would fly level at 30 mph.

Gary, if you have a 40 LA running 2-cycle with an 11-5 prop on 60 foot lines, you are not going to be doing under 5 second laps. Either that, or you got an awful small venturi. If your plane were flying that slow, you would know it. It would be hard to keep it at the end of the lines. And you are right, you wouldn't be able to do a square loop.

You need a new watch or a new timer. Maybe he was counting two laps and forgot to divide by two.

That was cute. Brett and I responded at the same time within a minute of one another.

This is a true story. Back when I was flying FF models, I knew a guy who used a mechanical stop watch, and he would give his stop watch to the timer who would time his model. That would have been OK, but his watch was rigged! He removed some weights from the balance wheel and cranked the spring adjustment for "full fast". Nobody ever suspected that his "5 minute maxes" were only 4 minutes.

Nope if you are turing a 9 second lap and you pull verticle, I believe the ARF will Land on her back, with a horrible thud.

The nine seconds is almost unbelieveable and the airplane still able to fly without the rollercoaster effect.

My ARF Nobler with the LA40, sixty foot lines, 11/6W wind Zinger prop, 10/22 fuel and 4-2-4 break will fly 5.5 second laps.

I believe a new electronic stop watch is called for in this situation!

Sumtins wrong bubba! Maybe you better put a tail hook on it and fly carrier.

Gary,

Nine second laps, NINE SECOND LAPS? Does your airplane act like it is on a roller coaster? Up & Down, UP & down and at the edge of falling from the sky?

My ARF Nobler has about 200 flights on her and it is a dream to fly.
Now here is one of my set ups for the LA40.

10/22 fuel, Fox idle bar plug, 11/6W prop, 4-2-4 break, 58 or 60 foot lines. This will usually lend itself to 5.5 to 5.8 second laps. Plenty of power for the entire pattern on 4.5 ounces of fuel.
No problems to speak of.

Most of the flights with the LA were made with 58 foot lines. I have since gone from the LA to a FP and now a Stuka Stunt OS35FP sit up in her nose.

I suggest a new stop watch.

Wow what is with the fuel consumption also.I fly a Cardinal 40 with a LA40 and a 4oz clunk tank.It has a APC 11-4 and 60ft eye to eye lines.5.3 sec at the start and 5.0 at the end for overhead and clover.6minutes and 45 sec on 4oz.The engine runs in a light 4 stroke in level flight .I would not want to sneeze and pull up doing a 9 sec lap!and 4 minutes on 4 oz of fuel?

For a 9 second lap to equal 30 MPH requires a 63ft radius. What length lines are you using handle to center of plane?

Flying 30 mph with a 5" pitch would mean the engine is only turning around 6300 to 7400 RPM. There is no way I would believe a LA 40 in a 2cycle run would be turning over this slow in the air.

Have you checked the engine RPM with a tach?

I am so new to this that I never have any answers for people. But today I have the answer!!!!!

Turn the stop watch over!!!

It is doing 6 second laps.

Thanks
Paul

>I am so new to this that I never have any answers for
>people. But today I have the answer!!!!!
>
>Turn the stop watch over!!!
>
>It is doing 6 second laps.
>
>
>Thanks
>Paul

I like this answer .I think you got it !!

Gary,
Check your line length! Remember that McCoy .35 you thought was doing 120 mph or so on...I think it was a Ringmaster?

Gary: Are you actually timing with a watch (not an hourglass, or a sundial)?

You are not just counting seconds, right? None of this "One Mississippi, Two Mississippi stuff.

Gary,

You didn’t tell us how much it weighs. Was it built from some scrap 1/4" plywood that you had in the garage? If so, I would suggest mounting a small 2 cycle gas engine with a homemade propeller on the nose. Remove the landing gear and use a dolly.

Although, I really think Rootbeard got it right.

Think you all missed it, he's flying on MARS. That's why the engine is 2 cycling on an 11x5, but only doing 30 mph, the air is too thin. And it explains why he's able to do square loops and the like, the gravity is much lower.

Much like the McCoy powered Ringmaster, this plane and pilot combo is 'Outta this World!'

Phil said he timed it with his wrist watch. Humm...must be a metric watch. No way 9 seconds can be correct on 60 ft lines. When I fly and count seconds I usually get a count or 6.

I also noticed something strange. I rolled out 2 sets of 60 ft lines and one set of lines is about 3 ft longer than the other set. Either one set is 3 ft short or the other set is 3 ft too long. I have not had a change to measure them yet.

I had a set of 70 ft lines once. Not sure where they are. I will roll all my lines out after work today and measure them.

Try using a tape measure and never trust the length marked on pre-made lines.

LAST EDITED ON Jul-23-04 AT 07:26 PM (CDT)
 
When you find out the problem let us know the solution.

>I also noticed something strange. I rolled out 2 sets of 60
>ft lines and one set of lines is about 3 ft longer than the
>other set. Either one set is 3 ft short or the other set is
>3 ft too long. I have not had a change to measure them yet.

>Gary Weaver [email protected]

Many of the commercial lines are purposely made shorter since the correct way to measure is from the handle to the center of the plane. But even here I once got a commercial (Pylon brand) set of lines where one line was longer than the other.

Yes, it is good to get out a tape measure and measure them yourself.

Hes not flyin g on Mars,,,, Hes entered the place where the PERFECT
pattern can be flown with a 4 cycle run and 9 second lap times.Where Bob Palmer autographs your plane after every flight.
Its called ---------------- THE TWILIGHT ZONE

You know what John? I think you just might have the prop on backwards. That is an old trick from the 50's to slow down planes used as trainers. Check it out.

Yeah, but watch those blades. An APC would make a good blender blade.

OK Gary, in your defense, I went flying this moring with two freinds in our club. One of my flights, a profile Cardinal with an OS .40LA, 11X5 wood prop, was clocked at 6.2 seconds. We knew it was slow by the take off and it still had good tension unitl I climbed up to about 40 degrees when it fell off noticably. My line length is 62 feet eye to eye. So, if you had a rich run, 70 foot lines, a gentle breeze to dead air like we had, then I can see a 9 second, but hairy slow flight. Other wise I believe your eyes are very dark brown.