ARF Nobler Improvement Notice

I just received my second Nobler ARF kit and was pleasantly surprized to see a second fuel tank included . In addition to the original metal tank, there is a 6oz. plastic clunk tank, along with the items needed to convert the plane to the clunk tank. According to the literature, flight times of 8 1/2 minutes were achieved using an OS Max .46LA with a 11 X 4 prop. The model still has those tacky leadouts, but this is a major improvement. I think I will try to order one of these new tanks for my other Nobler.

I have finished recently an ARF Nobler that is powered with an ABC GMA Fox 35 with the original tank. The ship weighs exactly 40 oz. and I did not have to add any lead to the tail or nose. It flies beautifully with the Fox in all kinds of wind. Putting an OS 40 or 46 LA on it is just plain overkill. Stay with the Fox 35 or the OS 35 Max S. They are perfect for it and it was designed by George Aldrich in 1957 for them. I did replace the bellcrank, leadouts and pushrod with better ones. Other than that it is original.

Tom,

One question, do you have enough fuel in the original tank with the Fox 35 to get through the entire pattern?

My first Nobler ARF came out at 43 oz. with a LA.40 engine. I did beef up the tail for a stooge attach point, and stiffened up the nose. The plane balanced very close to the recommended point without additional weight. I was going to use a Stunt .35, but after talking with Bob Geiseke about it, he reccomended the .40, or even a .46. Who am I to argue with Bob G.

>Tom,
>
>One question, do you have enough fuel in the original tank
>with the Fox 35 to get through the entire pattern?

Not sure yet. I will fly it again this weekend and determine if it can do the entire pattern on 3.5 oz.

I purchased the new 6oz tank from Tower and it came in the mail today. I was using an OS 30 S in the airplane with the original metal tank. When I saw Tower had listed the plastic replacement tank I decided I would try my LA 40 or even my LA 46 in the ARF Nobler. What I do see as a possible problem is the new plastic tank has to set sideways in the tank compartment because the tank is 2'wide. In other words it has to sit like you would mount the tank on a profile. With the tank sitting on its side in the tank compartment you cant adjust the rubber stopper far enough to make the fuel tube line up on the center of the spray bar. With the engine mounted on the beams and the tank sitting on its side on the beams it looks like the fuel tube will be about 1/4 lower than the spray bar with the airplane sitting on its wheels. I would think it would make for some really rich runs inverted. If you have the LA 40 or 46 with the remote needle it would line up pretty much centered on the remote needle but I dont know if that makes a difference. What is your oppinion?

I made a "Nobler" using small drawings with no details...I would like to have something better for a new model...could anyone help me?...My email is [email protected].
Sebb

>I made a "Nobler" using small drawings with no details...I
>would like to have something better for a new model...could
>anyone help me?...My email is [email protected].
>Sebb

Sebb, Perhaps someone has contacted you directly, but if not, I assume you are scratch building your models. Plans for several version of the Nobler are available. Several sources are right here on this forum. Brodak sells a great kit that is as close to the original as any out there. They also will supply the plans only if that's all you need. Rsm sells a kit of the "Green Box Nobler".

The earliest published version is from the Model Airplane News, in 1952. The next version is what is known here as the Green Box Nobler. It was kitted by Top Flite in 1957. It is a little different from the earlier version. Later, Bob Geiske continued development, still is in fact. Top Flite released what is known as the Blue Box Nobler, or the Geiske Nobler in the 60's, and discontinued the earlier Green box Nobler. Some time later, George Aldrich, the original designer, Prepared a set of plans using measurements from the remains of the first Nobler used to win our Nationals. Finally a few years before Georges untimely passing, George worked with Brodak to make available, finally, the most accurate representaion of his first Nobler.

Many possibillities exist that can help you get a good set of plans. Let us know if we can be of further help.

>More than enough for any LA 40-46 engine.

Not in Texas. Maybe on FAI fuel.

My OS LA 46 burns about 5 1/2 oz of fuel per pattern.

> My OS LA 46 burns about 5 1/2 oz of fuel per pattern.
>
>
>
>
>
> Rick Henry

That sounds about right. 5 to 5.5 oz.

Duck and I both use an LA 46 on our planes and we keep asking ourselves why everyone else uses so much fuel. We both use the standard OS venturi, a ST NVA, and an 11x5 APC prop. Both use Cooper's Custom Blend Fuel with 23% oil (half castor). I use 5% and Duck uses 10%.

Duck easily gets a pattern out of 3.5 oz, but I need closer to 4 oz since my engine is a little newer (only a month old) than his. I used to have an FP 40 on my plane and 3.5 oz was more than enough for a pattern.

Our altitude is about 2500 ft and I expected to use more fuel at the lower altitude in Albany, but there was no real difference.

So why are we using less fuel? Maybe it's the Cooper's fuel? Most in our club use it and won't change back to our previous brands.

Neil,

What planes are you two guys using the 46LA's on? Just curious if they are the ARF Noblers.
Thanks,

My Oriental with LA .46 By&O prop 46 OZ uses 4.5 oz 10 % nitro 25% oil fuel. My Cardinal profile LA .46 Zinger 11-6 prop 45 oz. uses 5 oz. 10 % nitro 25% oil fuel. My PA ship for 2003 Stunter 131 was 600 Square inch streched Cardinal full fuse. LA .46 "heavy" Zinger 11-6 prop uses 5 oz 10 % nitro 25% oil.
The LAs run great.

>Neil,
>
>What planes are you two guys using the 46LA's on? Just
>curious if they are the ARF Noblers.
>Thanks,
>
>Kirk Wicker
>www.wingwalk.com

Rob is flying a modified Twister. I have an original design profile with 605 sq. in. that weighs 42 oz.