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  #11  
Old 01-03-2018, 04:51 AM
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Fearless Fearless is offline
 
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Location: Crestwood, KY
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The OP had a 9A with a 160 hp O-320 previously so he already knows the performance with that combo.
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RV-9A Based K6I2
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  #12  
Old 01-03-2018, 05:10 AM
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N941WR N941WR is offline
 
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Location: SC
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Quote:
Originally Posted by RV8JD View Post
Is that 200 MPH IAS or TAS?
That is TAS.

Remember, indicated airspeed drops off as you climb and the air gets thinner (not taking into account any change in temperature.)
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RV-9 (Yes, it's a dragon tail)
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  #13  
Old 01-03-2018, 06:02 AM
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grubbat grubbat is offline
 
Join Date: May 2012
Location: Ga
Posts: 536
Default Climb

What’s your mission? Mine is time to climb baby. Io360 with CS Prop on the RV-9 equals a climb that make me smile every time. I’m not a speed demon and I am very respectful of the VNO VNE limitations of the design thanks in large part of Scott’s posts. The last thing we all want is for the -9’s to start having the same failure rates that the -7 have.

Nevertheless, I have not regretted my decision one bit. That’s being said, the IO320 with CS Prop would be my second choice had I not already had an non-weighted crankshaft angle-valve 200hp engine laying around. However, I really love the IO320 engine/CS Prop combination and highly recommend it for the -9.
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  #14  
Old 01-03-2018, 08:57 AM
ka6dan ka6dan is offline
 
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Location: Dunnellon Fl
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Van doesn’t recommend a 360 for the 9. He’s the man what did the engineering and I for one follow the advice from the design engineer. If you have a background in aircraft design and can reverse engineer the 9, go ahead and put whatever engine you want in your 9.

As for the clowning question as the 9 & 7 have the same cowling and the 7 is approved for a 360 I would think it would fit in a 9
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  #15  
Old 01-03-2018, 10:18 AM
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RV8JD RV8JD is offline
 
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Quote:
Originally Posted by N941WR View Post
That is TAS.

Remember, indicated airspeed drops off as you climb and the air gets thinner (not taking into account any change in temperature.)
Thanks. Yes, I'm quite familiar with the differences between IAS and TAS. It helps if folks used units, and whether it's IAS or TAS when specifying airspeed. That's why I asked since I didn't want to assume.

I was going to mention that the Vne for the -9/-9A is 210 MPH TAS (not IAS). You're aware of this, but others may not be.
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Arlington, WA (KAWO)
RV-8, 320 Tach Hours
(Pic 1),(Pic 2)
- Out with the Old, In with the New
(Pic)
RV-8, 1938 Tach Hours (Pic 1),(Pic 2) - Sold

Glasflügel H-201B Standard Libelle, N564NS - Sold
Rolladen-Schneider LS1-f, N61MP - No longer owned

Last edited by RV8JD : 01-03-2018 at 10:21 AM.
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  #16  
Old 01-03-2018, 05:31 PM
Berchmans Berchmans is offline
 
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Location: Anchorage, Alaska
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Default Original

Doug,
Per your original question I assume that you are comparing the cost of a 320 ready to rock and roll verse a 360 that can be re-built for approximately the same price. I have been on both ends of this equation in the past and can only share that I have never had a rebuild come in for the original estimate, and by that I mean it's never costed less. So on that basis I, personally would chose the 320...all previous points can be taken into account as well.
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  #17  
Old 01-03-2018, 07:03 PM
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N941WR N941WR is offline
 
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Quote:
Originally Posted by Berchmans View Post
Doug,
Per your original question I assume that you are comparing the cost of a 320 ready to rock and roll verse a 360 that can be re-built for approximately the same price. I have been on both ends of this equation in the past and can only share that I have never had a rebuild come in for the original estimate, and by that I mean it's never costed less. So on that basis I, personally would chose the 320...all previous points can be taken into account as well.
Yes and no.

When I bought my ECi kit engine the difference between the 320 and 360 was $500 and 20 pounds. Since i knew I was going to run Catto, I'm still lighter than a 320 with a metal fixed pitch prop.

With an overhaul, all bets are off, until you open it up and know what you have.
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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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  #18  
Old 01-03-2018, 09:49 PM
Doug Rohrer Doug Rohrer is offline
 
Join Date: May 2009
Location: Bowling Green, KY
Posts: 174
Default Thanks to All

Glad to see the thread got back on track after a little drift. As my friend Fearless stated, I have about 500 hours in a -9A with a 160HP O-320 that was lost in a landing accident near Oshkosh 3 1/2 years ago. The plane performs great at the 160HP level, but since I am starting from scratch, I thought I would consider a 360 if a deal came along. Others have done so successfully. Vans did say the -7 cowl and engine mount will fit the -9 if that's what I want. I just have to confirm the 360 has the right sump, carb/throttle body configuration, etc. So the search goes on...
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  #19  
Old 01-03-2018, 10:16 PM
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RV8JD RV8JD is offline
 
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Posts: 771
Default Weight On Nose Wheel Limits

Something to consider. Last page for RV-9A:

https://www.vansaircraft.com/pdf/Nos...ice_letter.pdf
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Carl N.
Arlington, WA (KAWO)
RV-8, 320 Tach Hours
(Pic 1),(Pic 2)
- Out with the Old, In with the New
(Pic)
RV-8, 1938 Tach Hours (Pic 1),(Pic 2) - Sold

Glasflügel H-201B Standard Libelle, N564NS - Sold
Rolladen-Schneider LS1-f, N61MP - No longer owned
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  #20  
Old 01-04-2018, 02:59 PM
Doug Rohrer Doug Rohrer is offline
 
Join Date: May 2009
Location: Bowling Green, KY
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Thanks Carl. Giving me pause...
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