Mattnew, vic is right on about how to power that bird...my Dad started me on the path of rc.. I clearly remember him building the guillows 51 and 40 for control line back in the 70's.. My dad always loved the P-40 so when I had the chance I got him one that we only fly when together.. again Vic is correctabout the numbers changing when u decide what to power it with, or rather which outrunner..I'd definitly go out runner.. on my Dad's kyosho 55 p-40 for example , I put in a rimfire 55 motor at 480kv, 60 amp esc from electrifly running two 3300 3 cell lipos for 22.2 volts , 14X10 apc prop at an auw of 71/2 lbs the plane is no slouch for speed the esc I used allows me to run a 6.6 volt flight pack to RX so that I always have control even if the motor batt runs low..I get honest 8 - 10 min flights this way on a full house bird..ail,ele,rud,flaps, and retracts..consider powering ur servos this way so that the motor batts are dedicated to motor...somewhat some peace of mind knowingthe wheels will come down. thats if ya put retracts .But I must say that the 17 is a great looking bird even after 30 years in storage..fly it bro...oh yeah I almost forgot, I get about 1200 watts of power just in case..I rarely go past 3/4 throttle and thats only for the runway straffing runs
25's would be excellent powerr..I actually found you on ur gp rv-4 page ,I got one nib next upp on the table
...I'll keep checkin ur progress.....fly it bro.....
SLOPE FAST - SOAR DEEP
P-40 brotherhood #5 and #6