I want a plan of a four to six propeller engine heavy bomber, fully scale . At least 70".

Thanks

Lolo

Lolo:

Ultimate prop driven bomber would have to be the B-36. Six engines, pusher, and some versions also had a pair of jet engines hung under the wings.

But there are many more plans available for the B-29.

And as I said in your other thread, build a simpler twin to learn on while you build the bigger and more expensive plane.

Bill.

I think this heavy bomber. Truly the plan is not for. I got many freind that can build that while I help them. There is an ARF twin engine airplane. true!!! false??? no kit either

Thank

Lolo:

I think the Diablotin twin can be had as an ARF.

And while there are several warbird twin ARFs on the market, the same argument applies to them as a first twin.

Do a search on "ARF twin" and see what comes up.

Bill.

I was involved as test pilot for this B-36 project. 16ft span, 85 pounds, Six Super-Tigre 91s which were problematical. All wood construction from original plans. We had the flight controls on one transmitter, and the six engine throttles and the bomb-bay doors on a second transmitter. Pilot to flight engineer co-ordination was usually no problem.

The major problem we had was keeping all six engines running throughout the flights, as cooling was an issue with the pusher engines. Our test flights were conducted in the middle of summer in 100deg. weather, so we had to minimize the ground time with the engines running. We never had a flight where all six ran the entire flight.

It was flown four times then retired to the Western Aerospace Museum at the Oakland airport.

The gentleman that built this has just completed a Constellation model 049 with four OS91's, that was displayed at the last Rally of the Giants at Castle a couple of weeks ago. the first flight will be soon I hope.

Stan

Here's a shot taken during landing. Note that at least two engines are not running. (#'s 1 and 4)

Stan

And the third pic, taken during another landing. Note that # 1 is dead again. Even with a 5000ft long, 75ft wide runway, I still didn't land it in the middle!!.

Stan

Thanks stan for the photos, enjoyed that very much. What a project even just getting it to a flying site!

John

Dam....that is one huge plane. I'd be scared to fly something like that....specially if it wasn't mine in the first place...

Was is hard to fly with no throttle control? I'd think that would be hard to get used to...

Stan:

Awesome.

Any movies to post? Please share.

Thanks.

Bill.

If there is a "simple" 8' heavy bomber plan? Where?

Lolo

Lolo:

At a wing span of eight feet nothing is simple.

Even with only one engine.

The construction can be easy to do, but an airplane that size can do a lot of damage if it gets away from you, so two receivers (and a spare transmitter beside you) is a strongly recommended first complexity.

Bill.

Building a project like that could take a lot of money and time. But at the end you have done something impressive.

The use of the second transmitter and individual throttles was a great help in setting up each engine.

Flying the 36 without throttle control was no problem, as it responded fairly slow to power changes and could be easily anticipated.

The indivdual throttles and the flight engineer saved the airplane when we lost two engines on the right side on takeoff as he was able to reduce the power on the left engines to compensate. I had everything over to the left to try to compensate for the loss of power on the right (#'s 4 and 6 engines) and only his quick action kept the 36 from heading into the trees, as the thrust overpowered the flying surfaces at the low takeoff airspeed. Fortunately, with a pusher, you don't lose lift from the lack of prop airflow over the wings.

I also have to say that with the six 91's, the 36 was a bit overpowered. For a normal takeoff, he led the throttles with the four inboard engines, and by the time he got to advancing the two outboards, we we already airborne. This is when we lost #4 and 6 on the one scary flight.

One additional lesson we learned from the 36 - Brakes are a necessity, as without them, and with an 85 lb aircraft, the landing rollout goes on forever, and with six engines at idle you still have lots of thrust. It would have been nice to run the engines up to half power before starting the takeoff run to clear them out a bit too.

Stan

Where I can find those breaks???

Lolo

Lolo:

They are common on jets, required if the airplane moves with the turbine at idle.

BVM, Century Jet, Robart, most of the jet kitters and jet accessory suppliers have them.

Even Du-Bro has a single wheel brake kit, but theirs is not satisfactory for a large plane. It is/was cable operated. But I don't find it in the latest catalogue.

Most of the big ones are air operated, if you have pneumatic gear you're set. except paying for them.

Bill.

Stan,
Very impressive B 36 project. I'm curious how you managed six throttles on the transmitter end. Did you make a custom box with sliders or some variation?
How about posting a photo of the Connie when you get a chance.
Thx
Paul

The B-36 used a 7UAF radio on the flight controls/Gear/Flaps, and the Throttle system was an Ace Silver Seven in a custom box. Slider pots from Radio Shack were used for the six throttles, and one of the original Ace levers for the Bomb Bay. This was an AM system, and had a problem with the RF noise in this complex installation. The main gear were driven by electric screwdriver mechanisms with limit switches and they made a lot of radio noise. We finally got it all sorted out thru filtering and antenna placement.

I want to clarify that we did not have any brakes, and this made ground handling and recovery a bit tricky.

As soon as we fly the Connie, I'll have some pictures to show.

Stan

Today a large B-36 could be flown with electic motors eliminating the cooling problem and the heads sticking up out of the necelle.

You can see another one this size here at rcwarbirds http://www.rcwarbirds.com/features2.html

Into something different?
Enter the search engine for the Nakajima G10N Fugaku or the German Junkers Ju-390.
I once say a Japanese website where some modeler in Japan built the G10N.
Told You twins make you crazy.
Twinman