Well,
2 years ago Danny King gave me a great deal on his used 72" straight-blade Hartzell CS prop off of BEAUTIFUL DOLL. It totally changed my airplane's performance, particularly regarding takeoff and formation flying. However, I took a hit in cruise speeds from the original prop, a Sensi fixed pitch cruise prop. Right now, at 8-10,000' MSL, I'm getting 155KTAS at 2450-2500rpm, peak EGT.
Looking into this, I discovered (silly me ) that the Mother Ship intended RV-7As to fly with 74" CS Hartzell props. So....
...before I leap into the Mothership's online store to order a 74" Hartzell blended airfoil, can anybody tell me if they have also made the change from 72" straight to 74” BA? And whether it produced tangible improvements in cruise performance?
2 years ago Danny King gave me a great deal on his used 72" straight-blade Hartzell CS prop off of BEAUTIFUL DOLL. It totally changed my airplane's performance, particularly regarding takeoff and formation flying. However, I took a hit in cruise speeds from the original prop, a Sensi fixed pitch cruise prop. Right now, at 8-10,000' MSL, I'm getting 155KTAS at 2450-2500rpm, peak EGT.
Looking into this, I discovered (silly me ) that the Mother Ship intended RV-7As to fly with 74" CS Hartzell props. So....
...before I leap into the Mothership's online store to order a 74" Hartzell blended airfoil, can anybody tell me if they have also made the change from 72" straight to 74” BA? And whether it produced tangible improvements in cruise performance?
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