What is this engine?

Is the black bomber powerful?

Who would know?  It may not be "officially" called anything.  There are so many different parts that have been available in recent years, it hasn't been difficult to build your own unique engine.
It's possible that a Ranger was customised with a black crankcase or a Black Bomber was customised with a throttle.  The documentation shown isn't specific for this engine.

Rod.

(On another note, I struggle a little with this type of engine being known as a "Ranger".  A Ranger was an actual original Cox product, as pictured.)

If it was a customized engine, can anybody guess approx power output, or is that to hard? It has a rather large prop on it for an .049 so I am assuming the old owner was pretty confident in the crankshaft. I don't have the guts to take it apart, so would it be safe to run it with such a large prop?

It looks like a die cast crankcase with a sure-start cylinder and backplate....

Max prop would be around 6x3.

Bernie still sale a $54 Throttled Die cast "Ranger"....raw crankcase but same as shown by OP

https://coxengines.ca/cox-.049-rc-ranger-engine.html

Matt or Bernie or both used to have die cast crank cases in several colors...now all I see is pink die cast from CoxInternational

If I was a betting man....the engine shown was bought off ebay from Bernie a few years back when they had a large variety of configurations

without knowing the cylinder porting we have to assume average reed valve .049 performance....prop shown does not appear over large to me


here are the two best sources for Cox engines and parts

http://www.exmodelengines.com/home.php

https://coxengines.ca/

Ok, thanks for all the help!

none of us are ....some more than others

you are in right forum

intro....scroll down the topics

let us know YOU

@Not a cox guru wrote:If it was a customized engine, can anybody guess approx power output

I'm guessing about 50-60W or around 0.075hp on a 6x3 prop.

I don't have the guts to take it apart, so would it be safe to run it with such a large prop?

You don't have to take the entire engine apart just to change the prop, or did I misunderstand you?

No you did not misunderstand me, 50-60w that's more than I thought! I am going to build a Slipso plane for this one