Brian, yestreday was extremely windy at the local field and models needed all the power the engines could muster. The 17x13 full blade prop makes a good windy weather prop for the W160. Still running it on the rich side (only 2 gallons so far) and slightly detuned, but, it had enough grunt to pull the plane fine. A larger prop would be reserved for calmer conditions.
MattK
ORIGINAL: byoung466
ORIGINAL: MTK
Windy as all get out. Right in my face from the north. But I got four in nevertheless, just to make sure the engine would hold settings. It held well during all the rich running, till the tank emptied. The 17x13 is no load for the engine. Needs at least an 18" or bigger. I have a 19x14 which should tame the beast. Or about a 17x12 or 17x13 3 blade would be great but I don't think APC makes one. Maybe make one from 17x13N 2 blade props.
Matt
19x14, wow.....what %nitro and pipe are you running. What are you turning the 17x13 at?
Brian