I looking for the right engine for a bme 37% bme ultimate.T the 116 seems like a good choice but there is not much info in tread land on this engine.which engine should i go with da zdz bme 3w evo

[link=http://mvvs.nl/MVVS/main_bestanden/petrol.htm]MVVS?[/link]

From what I've read the Evolution/MVVS is too heavy. For only 1 lbs more you will get a DA150. Or I guess if you are not that power hungry a DA100, which is 1.5 lbs lighter.

Nothing against the evolution 116, but it is still 2.5lbs heavier than the lighest 100 class engine. If it were me I would go with the BME 110. Believe it or not 2.5lbs less will make that plane fly better and it will be noticeable.

It's all a matter of perspective, and horsepower per pound of plane. The MVVS is powerwise much closer to a 150 than to the 100. If you want 100 power, that is what you should use.
Having said that:
Will the DA100 pull a 30x10 prop? I do not think so. Nor will the BME or Brison.
The [link=http://www.rc-network.de/forum/showthread.php?t=24714&page=3]ZDZ100 turns a 24x12x3 Engel at 5800. The MVVS turns a 27x12x3 Engel at 5800[/link]. That is a 50% increase in horsepower, so it will tip the scales toward the heavier engine, unless the plane cannot handle the weight.

Edit: link added

Pe ---you can not use rational explanations --
It is forbidden here ---

Pe---that seems a little weak to me for a 100cc class engine. A good 106 or 110 better pull harder than that. I have a 25x12x3 just haven't tested it and will probably sell it. I was told to use a 26x12x3 by the manufacturer, the 25 he states is to small. If I have time I will check it this week and report back. I bet mine will run right along with the 116 on a similar set-up and be 2.5+lbs less.

Pe,I think the MVVS 116 should be compared to a 120 not a 100.You pick the smallest 100cc engine which is actually 97cc and compares it to a 116 and I'll bet the ZDZ didn't have a full tunes pipe setup on it like the MVVS 116.If you want to compare Pe why don't you put it in the category that it belongs.Then compare tuned pipe setup to tuned pipe setup.

The engine will have more power than any of the 100s. ANY. It will weigh 1.5 lbs more, but that is really a non issue with the BME ultimate. It can take a couple extra pounds fine. I say try it.

Try 2.5+lbs heavier than the lightest 100cc engine and it doesn't matter if the plane can take it or not, it can't fly better than a 2.5lb lighter version of the same plane.

Besides, maybe some of the other manufacturers are comming out with lighter and more powerfull versions of there engines too. Time will tell.

3w 106 on cans 5900 on bolly 30x10, and unloads like a freight train in the air and rips, would figure a mejzlik a couple hundred better than the bolly.

The German thread I referred to is very long. Later ZDZ models are more powerfull, but still 20% less than the 116. Weight difference is less than these 20%, so IMHO, the 116 still has an edge if you judge an engine on a HP per pound base.

@flyinrzrback:
The Bolly prop, by the data I have at the moment, has a lower load factor than the Mejzlik. (bolly=1 mejzlik=1.18) That means, that Bolly 30x10 turns more rpm than the Mejzlik 30x10 when compared back to back on the same day with the same engine setup. Always in search of field data, can you compare the two on the same engine? That would allow me to fine tune my spreadsheed basics.
Bolly 30x10 @ 5900 = 8.97 hp for 3W 106
Mejzlik 30x10 @ 6100 = 11.7 hp for MVVS 116 (data edit 5900 to 6100 rpm)

Since the Evolution/MVVS 116 is closer in weigh to the DA150, this is in my oppinion the engine to compare. Cubics really doens't matter - it's weight and power. The 116 is almost DA150 class in weight and pulls a significantly smaller prop.

I am no way biased towards DA, I just got an Evolution 45GX over the DA50, since I think the scales tip in favour of the Evolution in this category.

If somebody had some hands experience with 116 i would have purchased one
Im trying to learn and practice 3D manuvers so ill guess ill stick to the reliable
and custimer service oriented DA 100

is your test based on bolly wood or bolly carbon? what rpm will the 116 pull a mejzlik 28x10?

Hey I feel left out.. How about the Evo 150

and not evolution, two different animals.

Roger

My friend is flying 116.

I will try to arrange field data on a hp/pound basis, which should be a direct mode for engine power comparison for 3D applications. HP/pound both on plane, and on engine level.
Don't shoot me down yet! Stay with me a moment.
I know there is the torque@rpm and prop noise issue, and hp alone will not do, so I will try to put the engines in rpm or prop diameter ranges for best operation. (larger props fly 3D better)
There also will be the mechanical heat sink and cooling issue, which defines the heat stability of an engine, so different engines can, and will score significant user points in different fields of application.
Finally, there is the plane balance question. Will the plane of your dreams balance with the engine, or will it require a pound of lead in the nose when the lightest engine is used?

At the moment, I have more questions than answers. If you have data, I would appreciate getting them, so I can work out a comparison web page which should facilitate engine choice on above mentioned parameters.

Janch,
See my post #18
Do you have data on plane and engine/prop parameters of your friend?
At what altitude do you fly?

I sent you e-mail.

MVVS/Evolution should come out with a 90cc, 2 45Mgs blocked together, 10.2 hp or something[8D] and have it right at 5lbs.

I do not know. You have to ask them. I am only user.

How does he like it and how does it run?

He is flying 3D acrobatic. I have my Edge 540 with 58 ccm from him. He is satisfied. What do you ned to know?

Just wanting some feed-back on the engine. It has been out for a while now and I have not heard to much about it.