OS FR5 300 The sound check 

Thank you very much for your comment ! I'm taking a lot of attention neat working engine. The prop ends were specially painted in yellow, to show me the prop spinning area. Additionally, it looks much cooler, than simple unpainted prop. Thank you and have a bice day !

Thank you very much for your comment ! Absolutely agree with you regarding P-47 Thunderbolt, it should be a great pair ! Thank you and have a nice day !

Thank you very much for your comment, much appreciated !

Thank you very much for your comment ! That's interesting, really. I can imagine, how much work this conversion was consumed. I'm not sure, that I know ASP FS 400 AR so good, to convert it into gas & spark ignition. I still doesn't understand ASP engine in general, in contra with OS FR 5 300. The feeling, that this two engines are very much different despite of it's serious construction similarity from the point of view of engine operation behavior, is very strong. Based on my experience with the both engines on the bench, definitely, I'll choose OS version, as more predictable and definite engine. ASP isn't being my favorite radials, unfortunately... later, probably, I'll evaluate the reason. why. I think, that increasing of the engine's displacement in ASP version doesn't means, that everything else, (timings, etc.) was correctly transformed / transferred from 300's engines displacement structure into 400 displacement class. Something was missed. Apologizing for so much words...

@crazyengines88 not my radial engine of course, The asp come along much cheaper than a Japanese brand,so gives the ability for such conversions to happen, my challenge at the moment is the asp ft160 gas conversion using a saito gas carburettor its all most running perfectly, Asp fs120 and also a fs91 are converted using saito fg carburettor the singles run perfectly

@@danielhitchens4407 Thank you for your reply, it's very interesting info about engines conversion. Do you have some experience with Walbro style carbs ? I'm awaiting for the few of them, also, for the conversion purposes. Thank you a lot for the information !

Thank you for your comment ! Definitely, agreed with you. Open exhaust looks cooler, especially, with a rich fuel mix, but model and all around doesn't looks so nice :-) due to the oil spay all over... Thank you !

Thank you for your opinion ! 100% agreed with you ! Ring exhaust collector ring sounds better, definitely ! Thank you and have a nice day !