Aviationinfo Posted August 27, 2018 Report Posted August 27, 2018 11 hours ago, TTaylor said: Best guess is about 7 to 9 knots for the two combined. Throw in all the seals, remove or fair the step if it is fixed, and reverse the brakes or add an inner gear door and you should get close to 10 knots. My goal has been to get our 75F to 150 knots burning 9 gph at 10,000. I think that's pretty realistic. When we installed our ARI cowl mod, we got a consistent 3 knot increase in TAS over the guppy mouth (E model). The owner of the STC had told us that his customers reported from 3 - 7 knots. I guess he could have told me it would be anywhere from 3 to 25 knots and it still would've been right, Ha! We didn't install the 201 windshield but it's hard to believe it wouldn't be worth at least a few knots. From what I'm seeing here, David's cowl mod is an improvement over the ARI in terms of speed. Bang for the buck, of the two mods, I think the cowl mod is probably the best one. The windshield mod claims about 50 hours of labor, ouch! 1 Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.