Landing gear fairings
Moderators: GAHorn, Karl Towle, Bruce Fenstermacher
- 170C
- Posts: 3182
- Joined: Tue May 06, 2003 11:59 am
Fairings
I have to agree with blueldr, maybe with a Continental IO-360 210hp. I think the 135/140/145 "might" be achievable. We have some members with that conversion (one in OKC & one in the Chicago area) maybe others too that could probably speak with some authority on this subject. A Lyc O-360---I don't think so. A lot of folks who have spent lots of their $$ to gain speed won't admit if they didn't gain any or very little speed. Now certainly more hp will deliver "some" additional speed, but the engineers can explain the formula for how much. Rate of climb, yea, it will improve with more hp, especially w/ a cs prop. I sure haven't seen many of those 145 mph 170's. I might believe it if I were in there with a good gps to verify it in a 4 way speed run. Just MHO!
OLE POKEY
170C
Director:
2012-2018
170C
Director:
2012-2018
- Plummit
- Posts: 100
- Joined: Sun Dec 03, 2006 2:00 am
I'm sure the GPS will tell the truth, but the A/C I'm looking at is _claimed_ to go 140+GPS MPH (read: over the ground) at 2450 RPM and 20 inches with an 0-360 @7000 feet. Obviously I would have reservations if the claimed speeds aren't there, but those are respectable numbers if true. You don't think I'm having my leg pulled do you?
regards
~Marc


regards
~Marc
- johneeb
- Posts: 1542
- Joined: Thu Jun 26, 2003 2:44 am
Re: Fairings
Frank,170C wrote:I have to agree with blueldr, maybe with a Continental IO-360 210hp. I think the 135/140/145 "might" be achievable. We have some members with that conversion (one in OKC & one in the Chicago area) maybe others too that could probably speak with some authority on this subject. A Lyc O-360---I don't think so. A lot of folks who have spent lots of their $$ to gain speed won't admit if they didn't gain any or very little speed. Now certainly more hp will deliver "some" additional speed, but the engineers can explain the formula for how much. Rate of climb, yea, it will improve with more hp, especially w/ a cs prop. I sure haven't seen many of those 145 mph 170's. I might believe it if I were in there with a good gps to verify it in a 4 way speed run. Just MHO!
Sense you asked the man who has one, here is my spin on Cont. IO360 and speed. Indicating 140mph takes "almost", as Mr Scott used to say all she's got. In the picture below the engine monitor says the engine was developing 74% of rated power to indicate 140mph with a very slight climb. Must have been a lite tail wind as the 127kts displayed in the lower right corner of the lower GPS computes to 146mph ground speed. The fuel burn to achieve this speed is expensive around 10.8gph.

John E. Barrett
aka. Johneb
Sent from my "Cray Super Computer"
aka. Johneb
Sent from my "Cray Super Computer"
- Plummit
- Posts: 100
- Joined: Sun Dec 03, 2006 2:00 am
Re: Fairings
My gawd John, what a panel!!! And the 170 it's mounted to isn't too shabby either.... 
regards
~Marc

regards
~Marc
johneeb wrote:Frank,170C wrote:I have to agree with blueldr, maybe with a Continental IO-360 210hp. I think the 135/140/145 "might" be achievable. We have some members with that conversion (one in OKC & one in the Chicago area) maybe others too that could probably speak with some authority on this subject. A Lyc O-360---I don't think so. A lot of folks who have spent lots of their $$ to gain speed won't admit if they didn't gain any or very little speed. Now certainly more hp will deliver "some" additional speed, but the engineers can explain the formula for how much. Rate of climb, yea, it will improve with more hp, especially w/ a cs prop. I sure haven't seen many of those 145 mph 170's. I might believe it if I were in there with a good gps to verify it in a 4 way speed run. Just MHO!
Sense you asked the man who has one, here is my spin on Cont. IO360 and speed. Indicating 140mph takes "almost", as Mr Scott used to say all she's got. In the picture below the engine monitor says the engine was developing 74% of rated power to indicate 140mph with a very slight climb. Must have been a lite tail wind as the 127kts displayed in the lower right corner of the lower GPS computes to 146mph ground speed. The fuel burn to achieve this speed is expensive around 10.8gph.
- 170C
- Posts: 3182
- Joined: Tue May 06, 2003 11:59 am
145 mph 170
John, thanks for your input. Now we need Jim in Edmond, OK to throw in his data.
BTW folks, as pretty as that panel is on John's 170, the rest of the interior is just as nice and that is equalled or bettered by the exterior. Really a nice plane.
John, how about a exterior photo of it on this forum. I have several I took at Petit Jean, but haven't learned how to scan them.
BTW folks, as pretty as that panel is on John's 170, the rest of the interior is just as nice and that is equalled or bettered by the exterior. Really a nice plane.
John, how about a exterior photo of it on this forum. I have several I took at Petit Jean, but haven't learned how to scan them.
OLE POKEY
170C
Director:
2012-2018
170C
Director:
2012-2018
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