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  #61  
Old 01-29-2018, 10:55 PM
tomww tomww is offline
 
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Quote:
Originally Posted by N941WR View Post
207 mph TAS is not beyond the Vne of 210 mph TAS. It is close, very very close.

Allan must have some tricks up his sleeve because my O-360 powered -9 tail dragger will hit the wall right at 200 MPH / 175 knots, which is just fine by me.

His comments about flying high are right on the mark. Even at 17.5 the -9 is still flying nose down. Whereas the short wing RV's are flying nose up at those altitudes.
The point is that those speeds are getting near the edge for the RV9. Read the warning on the Vans web page link. That is dangerous territory for the 9. Good luck if you go there deliberately.

It?s not chance that link is only on the 9 page. The dangers are there for any aircraft but it?s a tighter corner for the 9.

As for how Alan gets that extra 7mph. Well I?ve seen all sorts of things claimed on the internet, I certainly don?t believe it all. Let?s hope however it?s done that he has covered the dangers inherent in that speed in the 9.
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  #62  
Old 01-30-2018, 06:35 AM
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PerfTech PerfTech is offline
 
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Location: Redlands, Ca.
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Quote:
Originally Posted by ChiefPilot View Post
Tom wasn't referencing Vne. Max structural cruise speed, Vno, is something different.
....Only cruise in smooth air at the quoted speeds, and have
performed many mods to add some extra strength in critical
areas. We may offer some more of these mods on our website
in the future. We see lots of interest in these, but are still in
the testing stage at present. Thanks, Allan
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AntiSplatAero.com
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Southern California (KREI)
RV-9A / Edge-540
(909) 824-1020
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  #63  
Old 01-30-2018, 09:07 AM
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N941WR N941WR is offline
 
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Quote:
Originally Posted by ChiefPilot View Post
The picture you posted earlier in this thread, in post #8, shows this to be false.
Looks pretty level to me. Besides, the -9 seems to fly more nose down than the short wing RV's. At that altitude, it is still nose down, just not as much as at 8,500'
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RV-9 (Yes, it's a dragon tail)
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Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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  #64  
Old 01-30-2018, 09:13 AM
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N941WR N941WR is offline
 
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Quote:
Originally Posted by ChiefPilot View Post
Tom wasn't referencing Vne. Max structural cruise speed, Vno, is something different.
Good point but is Vno TAS or IAS?
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RV-9 (Yes, it's a dragon tail)
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Build the plane you want, not the plane others want you to build!
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  #65  
Old 01-30-2018, 09:18 AM
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N941WR N941WR is offline
 
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[quote=tomww;1235892]The point is that those speeds are getting near the edge for the RV9. ... [/url]

Yep, they are close but not over.

It is up to the pilot to manage the speed. Even an O-235 powered -9(A) can hit those numbers going downhill.
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Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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  #66  
Old 01-30-2018, 09:18 AM
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grubbat grubbat is offline
 
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Location: Ga
Posts: 662
Default AIRSPeed

Vno is indicated and Vne is true. Interesting huh?

Somewhere north of 8500ft, Indicated becomes secondary to True AIRSPeed.
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RV-3 Sold
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Last edited by grubbat : 01-30-2018 at 09:21 AM.
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  #67  
Old 01-30-2018, 09:43 AM
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ChiefPilot ChiefPilot is offline
 
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Quote:
Originally Posted by N941WR View Post
Looks pretty level to me. Besides, the -9 seems to fly more nose down than the short wing RV's. At that altitude, it is still nose down, just not as much as at 8,500'
The PFD does not show any kind of "nose down" indication. And, "Looks pretty level to me" would seem to contradict "it is still nose down".
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Last edited by ChiefPilot : 01-30-2018 at 09:53 AM.
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  #68  
Old 01-30-2018, 10:34 AM
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N941WR N941WR is offline
 
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Quote:
Originally Posted by ChiefPilot View Post
The PFD does not show any kind of "nose down" indication. And, "Looks pretty level to me" would seem to contradict "it is still nose down".
That might be because "level flight" is nose down and the EFIS is so calibrated.
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Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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  #69  
Old 01-30-2018, 10:58 AM
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rvbuilder2002 rvbuilder2002 is offline
 
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Default Regarding smooth air......

The two worst turbulence events I have had in my flying career (both while flying RV's at high speed cruise and bad enough to cause major head impact on the canopy even with very tight belts) were surely encounters with wake turbulence, since the air had been glassy smooth for the previous 1/2 hr and it was for the half hour after the event.
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  #70  
Old 01-30-2018, 11:42 AM
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N941WR N941WR is offline
 
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Quote:
Originally Posted by rvbuilder2002 View Post
The two worst turbulence events I have had in my flying career (both while flying RV's at high speed cruise and bad enough to cause major head impact on the canopy even with very tight belts) were surely encounters with wake turbulence, since the air had been glassy smooth for the previous 1/2 hr and it was for the half hour after the event.
Ditto for me. Even bruised my shins from hitting the bottom of the panel.
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Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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