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  #1  
Old 03-11-2023, 11:16 PM
scsmith scsmith is offline
 
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Default Rotax 914F

Anyone think about putting a Rotax 914 in their RV-12 (EAB)? Turbocharged.

I think the same engine mount will fit, since the 914 is a direct derivative of the 912, right?
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  #2  
Old 03-15-2023, 09:25 AM
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hamblin10 hamblin10 is offline
 
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Not that you cant do it but why would you? Installing the larger engine forces you to certify EAB vs ELSA and moves the aircraft out of the LSA category due to speed and possible weight limitations. At that point I would consider a -9 unless it is more about removable wings and not about the LSA category.
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  #3  
Old 03-16-2023, 04:49 AM
thiggins thiggins is offline
 
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Couldnít he just operate it as an LSA? Not sure if the weight would be a problem, but it would still have a throttle.
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  #4  
Old 03-16-2023, 05:19 AM
h&jeuropa h&jeuropa is offline
 
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I fly a Europa with 914. The engine mount for Europa is the same for 912 & 914, so should fit. Be aware that the airbox and turbo air intake are different so probably will require some cowl changes.

I have a 914 with 1300 hours available reasonable.

Jim Butcher
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  #5  
Old 03-16-2023, 08:37 AM
AeroEngineer AeroEngineer is offline
 
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Location: US of A
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Quote:
Originally Posted by thiggins View Post
Couldnít he just operate it as an LSA?
Not if the max sustained horizontal speed is more than 120 KCAS, which it probably would be with a 914. With the 912 you're already very close.
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  #6  
Old 03-16-2023, 06:49 PM
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Dvalcik Dvalcik is offline
 
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Quote:
Originally Posted by hamblin10 View Post
Not that you cant do it but why would you? Installing the larger engine forces you to certify EAB vs ELSA and moves the aircraft out of the LSA category due to speed and possible weight limitations. At that point I would consider a -9 unless it is more about removable wings and not about the LSA category.
Correct it would be an EAB and fly it as a LSA as long as weight is not too much and pitch is set for 120 kts level flight. It would be a pitched for climb my guess 1500-2000 climb.

Good thread https://teamkitfox.com/Forums/threads/1852-912-vs-914
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  #7  
Old 03-16-2023, 10:07 PM
scsmith scsmith is offline
 
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Location: Ashland, OR
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Quote:
Originally Posted by hamblin10 View Post
Not that you cant do it but why would you? Installing the larger engine forces you to certify EAB vs ELSA and moves the aircraft out of the LSA category due to speed and possible weight limitations. At that point I would consider a -9 unless it is more about removable wings and not about the LSA category.
It is not a larger engine. It is the same size engine, with the same rated continuous horsepower. The difference is that with the turbo, that horsepower rating is maintained to high altitudes.

Thanks everyone for your replies and thoughts. Especially confirming that the mount is the same.

h&jeuropa - depending on whether a contract comes through in the next few months, we might be interested in your engine.
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also
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  #8  
Old 03-17-2023, 10:04 PM
RFSchaller RFSchaller is offline
 
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I thought the 914 was rated at 115HP max vs rhe 912ís 100HP.
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  #9  
Old 03-18-2023, 01:23 AM
scsmith scsmith is offline
 
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Quote:
Originally Posted by RFSchaller View Post
I thought the 914 was rated at 115HP max vs rhe 912ís 100HP.
difference between max and max continuous.
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Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet" Flying since Sept. 2009
Hobbs 725
also
1/4 share in 1959 C-182B (tow plane)
LS6-15/18W sailplane SOLD
bought my old LS6-A back!!
VAF donation Dec 2022
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