I have an OS 52 FS looking for a home, and thought this would be a good fit for the Goldberg Tiger 2. The Tower Hobbies page lists engine recommendations for this plane as 40-46 2-stroke or 40-50 4-stroke. (The box also lists them as 40-46 2 and 48 4).

I was all set to have them ring the ARF up for me, when I casually mentioned I would be putting in a 52 FS. The LHS guy looked horrified and said "no way, if you want to use a 4-stroke, it has to be a 70".

Is this true? This is a 61 span plane, intended for lazy Sunday flying, does it really need a 70? What are other members using? What flight character will this have with a 52?

Any help much appreciated.

Dave