mrbigg

My Feedback: (21)

I'm sure you guys have seen the threads on the new BME Extreme 55. How about this motor on the Yak or Edge? Do you think an all up weight around 12 pounds is possible? check the link out. [link]http://www.rcuniverse.com/forum/m_3809001/anchors_3813168/mpage_1/key_/anchor/tm.htm[/link]

Spacey

Oh dear! mrbigg is thinking! Everybody!! RUN!!!!

AFSalmon

My Feedback: (3)

Actually I lost track on the status of the BME Extreme 55 as it was delayed so long. So is it out now and if so what are teh reports on its performance? As far as putting one on the giant profiles I'd have to say way too much engine. Put that beast on the Hybrid!

remcl1

My Feedback: (3)

Well my edge is kit built and with a 2 LB YS 140 it is 11.6 pounds. The BME 55 is 2 lbs, but then you have to add muffler, prop, lot of bolts, ignition, etc. That may be more than 1/2 pound. You can do some reseach and find out. If you start with 11.5 pounds with the 55, then add the add on's, I think you will be close. Even if you are a pound off the GS540 or Yak will still fly great.

mrbigg

My Feedback: (21)

Just found some info out via PM. He thinks that 11lbs might be possible!
Way too much motor for sure Mike, but alot of people think that there are no planes out there with tons of wing area and the possibilty of a really low wing loading (low all-up-weight).

By the way Spacey, you must be talking to the old lady, she says the same thing!

remcl1

My Feedback: (3)

You asked about the weight, but I do agree that it is way too much engine. I flew one with a Moki 210 and did not like it. Holding altitude in a torque roll is much more work. Your usable throttle is a small amount. A few clicks and the bird goes to the moon. I love to put it in a torque roll and goose the throttler every second and watch the plane bob up and down while spinning. This is hard to do when you have such a large power plant.

Where does your question originate. Are you looking for an engine for the GS540 or are you looking for plane for the 55?


Mike, a while ago you offered larger fatty kits. What happened to that line?

Spacey

mrbigg: You know my dad doesn't keep it a secret that I know just enough about everything to be dangerous. Sooo yea when I alter something like "I wonder" he blabbers something along the lines of my previous post.

Anyways on the topic of the motor. Remcl1 is following my thinking. A very good friend of mine lets me fly hes H9 33% Edge with a DA100 on it quite frequently to help give the bird some excercise and I have a really hard time controlling the height of the plane when it's in a inverted harrier because it is so overpowered. One click and you're going this way, one click and it's the other way. Really just makes life difficult as you have to really work the throttle alot. I think it's safe to say that we have reached the point where we can actually overpower some 3D models. Now putting that 55 on a Hybrid? Heck I'm all for that one! [8D]

Icebird

Well, as I have an 80 inch Edge with a BME 50 on it, I feel qualified to respond to this. In a word: DON'T! I love having excessive amounts of power, and I know how to set up a throttle curve and use it properly. I like having the power available on this plane, and while I'm at 3500 feet altitude, this isn't the first time I've had an excessively overpowered plane.

The only reason I say not to do this is that the plane really can't handle the power pulses of the engine! It is plenty strong enough to handle flying stresses and I've tested it quite thoroughly that way. The design is solid, it's just that when a 50 cc or more gasser fires, it moves the prop one way, and the engine the other. This will lead to the destruction of your plane before too long. I currently have 40 flights on the plane, and it's holding up okay, but the fuselage is more flexible than it used to be. I put reinforcements on the tail, and they have to be adjusted frequently, simply because the bolts are pulling through the CA hardened balsa of the tail surfaces. Yes, it can be done, but like a lot of things that are possible, it probably shouldn't be done. I know the designer says not to do it, and I would agree with him. It's a great plane, but 50 cc's is just TOO MUCH!

Jim

AFSalmon

My Feedback: (3)

Thanks Jim for a great summary! You pretty much hit my design criteria on the head. The plane was designed for the OS 160/YS 140/Saito 180/Moki powerplant range. The MVVS is a perfect gasser for this plane as well. But anything more than that requires some reinforcements on the airframe as it was designed to be a light fun fly plane.

To answer the question of the fatter funfly, that would be the Hybrid. That's the plane I designed to be the funfly of gassers out there. The Hybrid is a perfect "giant funfly" plane for the 50-60 cc gassers out there.