Let'sgoflying!
Touchdown! Greaser!
Didn't find in a search on POA:
http://www.navioncustoms.com/Photos.html#0
http://www.navioncustoms.com/Photos.html#0
720 powered Navion
- Thread starter Let'sgoflying!
- Start date
kgruber
Final Approach
That's why I like aviation. The fanatics!!
Let'sgoflying!
Touchdown! Greaser!
and dreamers!
Comanche 400...
I bet it tries out at that lower than that. That's a hell of a nice rig.
Chris_Telford
Filing Flight Plan
I have been looking for a 550 or 520 navion ....bigger is better right
txflyer
En-Route
- Joined
- May 3, 2013
- Messages
- 4,509
- Location
- Wild Blue Yonder
- Display Name
Display name:
Fly it like you STOL it ♦
A little birdie told me fuel burn vs. speed ain't worth it ....
It depends on altitude, but without pressurization, pretty much no.
Ryan's a hoot. He comes from a long Navion family. He does beautiful work (won the ANS flagship a couple of years ago with a GO-480 powered Navion).
I've got a 550. As alluded to, I'm not sure 400HP will do a whole lot for a Navion. Mine already climbs like a bat out of hell on 300HP and it is a law of diminishing returns to try to drag a draggy fuselage (even after you clean up all you can on the Navion) through the air 10 knots faster.
But he should blow away our Unlimited class race.
The turbocharger will be a bigger win, especially if you spend time in the teens or higher. I regularly fly mine NA 550 in the low teens (did it once at 17,000) and a turbo on it would be nice.
I've got a 550. As alluded to, I'm not sure 400HP will do a whole lot for a Navion. Mine already climbs like a bat out of hell on 300HP and it is a law of diminishing returns to try to drag a draggy fuselage (even after you clean up all you can on the Navion) through the air 10 knots faster.
But he should blow away our Unlimited class race.
The turbocharger will be a bigger win, especially if you spend time in the teens or higher. I regularly fly mine NA 550 in the low teens (did it once at 17,000) and a turbo on it would be nice.
kgruber
Final Approach
I seem to vaguely remember the Helio Courier had a 400. But that it was pretty much a dud, and Courier pilots preferred the H-295.
And then, there was what's his name, out in Oregon, with the giant Super Cub looking machine with a 400. What has become of that?
And then, there was what's his name, out in Oregon, with the giant Super Cub looking machine with a 400. What has become of that?
Last edited:
I have been looking for a 550 or 520 navion ....bigger is better right
Check out 9TF. Our shop installed a TSIO520 in it. The paperwork going to experimental and back to normal category was most of the work. Thankfully, my boss did that.
Don't know if it's for sale or not but it never hurts to ask.
I seem to vaguely remember the Helio Courier had a 400. But that it was pretty much a dud, and Courier pilots preferred the H-295.
And then, there was what's his name, out in Oregon, with the giant Super Cub looking machine with a 400. What has become of that?
I saw one guy put a (IIRC 425hp) M-14 on a Helio. I always wondered how that wen.