RE: Osiris
Hi Stan,
I've used that receiver in many similarly-sized airplanes with great success. The only pattern airplane I have flown that in has been a 48" Vanquish.
I am not sure how "fast" the receiver is, that may be the only drawback, but I've not noted any deficiencies with the use of that receiver in 30 or more airplanes (each with a different receiver, not one receiver recycled through several airframes)