Pastem,

I do not have any personal experience with the Graupner AT 6 (yet), but I did do a little research on it and have heard nothing but good things as far as its quality and flight characteristics. I just order one and plan on putting a Saito FS 72 that I currently have available in it. I believe it should be ok. The attached link to the Graupner AT 6 page http://shop.graupner.de/webuerp/servlet/AI?ARTN=9381 has a little info on it, but some of the specs that I have gathered indicate that its assembled weight is about 7.0 lbs and the recommende motor range is 2-stroke 7.45 cc (46) to 8.17 cc (50) max, 4-stroke 14.95 cc (91) max (seems a little narrow for a motor range). Graupner also sells the ARF as a combo with an OS 46. Based on that it would seem that your 52 would be ok.

Hope this helps,

Mark