RE: OS 140 RX...what prop?
Thank you guys! Ola, contratulations for your flights at WC, I was there!!!
From the various replies it seems this engine has huge flexibility!!! I din't think that it could spin a 18" propeller!!!
I see that in local contests here in Italy the APC 16x14 is also quite used: it could yeld little more speed vs little less vertical thrust?
Everybody agrees about 15% nitro?
Thanks again for your help, very appreciated.