The biggest problem you would face with the 2:1 geared rcv motors is getting them started.
I had an rcv60sp. At first...it started easily because the parts internally had not broken in yet and compression wasnt that high. ocne you run it for a gallon or so, the parts seat together very well, but then getting the stupid thing to start(at the prop using an electric starter) was not possible. And...get this....I couldnt get it started even using the starter on 24volts instead of the standard 12v.
Yes, those SP series motor have a starter adapter thing located at the top back end of the motor, but, then that would require you to drill a sizeable hole in the top of the nose on this plane to get the adapter on the starter down to the hex head part on the motor to spin it since this is an enclosed engine plane. Do you really want to have that big hole there? Sure, you could mount the motor upside down and have a big hole in the bottom cowl piece, but then you'd have to start the plane in a rack upside down everytime. Does that sound like fun?
I think this is why those motors have not gained alot of widespread use and why the rcv CD series of motors are much better sellers.

BTW, I had that rcv60sp on a Fokker DVII because it could spin a big prop and look scale. But, seeing as even that bi-plane has an enclosed engine, the top wing prevented the use of the starter adapter had I want to have a big hole on the top on the cowl. After the motor got broke in some, I was not able to start the motor on the prop using the electric starter mentioned. So, I ended up selling the motor at a loss just to get rid of it.