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  #1  
Old 07-15-2021, 05:51 PM
Bernie Bernie is offline
 
Join Date: Apr 2018
Location: Mountain Green. UT
Posts: 7
Default Propellers for IO-390-EXP119 on RV-14

I am close to ordering my engine/propeller combo from Vans. I am building the tailwheel version of the RV-14. If I am reading it right, the Vans website recommends one Propeller from Hartzell and one from MT. The Hartzell prop is the 72" two blade aluminum blended airfoil priced at $8760. The MT prop the 72" three blade composite priced at $15,300. Thoughts and comments from those in the know would be most appreciated.

Thanks, Bernie

RV-14, 140587, N914BF reserved, building for two years
RV-4, SN3630, N904BF modified for my 6'7" frame, flying since 5/2020
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  #2  
Old 07-16-2021, 06:35 AM
Avengerboss Avengerboss is offline
 
Join Date: Dec 2008
Location: Ramona, Calif.
Posts: 364
Default 14 props

Look into a Whirlwind. They just made one that should work great on the 390.
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Finished and flying our 10
Got me another RV8 to finish building
finished & flying 14A assist build SOLD
Building another 7 !!! Finished SOLD
another 14A assist build, Back at it again
Built: two 7s, two 8's, two 9As,10,12, assisted in 2 RV14As ,RANS S7
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  #3  
Old 07-16-2021, 09:13 AM
MED MED is offline
 
Join Date: Jul 2015
Location: Aiken, SC
Posts: 811
Default

The 74 inch 2-blade composite prop from Hartzell is very nice.
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140236
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Miss March 2020
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  #4  
Old 07-16-2021, 12:31 PM
bk1bennett's Avatar
bk1bennett bk1bennett is offline
 
Join Date: Nov 2015
Location: Sachse, TX
Posts: 81
Default 74-in. Prop on 14A

Quote:
Originally Posted by MED View Post
The 74 inch 2-blade composite prop from Hartzell is very nice.
Glad to hear that. I just ordered one to go with the IO-390-EXP119 for my RV-14A. I had to make a quick decision and for a 14A I didn't think ground clearance would be an issue. I thought that the longer prop would be more efficient and give me more to work with if we have to dress it out. I could be completely wrong, but when you have to make a decision fast, you don't over-analyze.
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  #5  
Old 07-16-2021, 12:42 PM
Carl Froehlich's Avatar
Carl Froehlich Carl Froehlich is offline
 
Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 3,178
Default

The standard Hartzell two blade BA prop is, IMO, the best value choice. While the composite Hartzell and MT props are nice, the huge price increase along with no data that they provide any performance gain over the standard prop moves them out of my decision process.

I build three RVs with this prop, and will use it again on the current build.

Carl
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  #6  
Old 07-16-2021, 01:16 PM
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Walt Walt is offline
 
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 6,278
Default

Quote:
Originally Posted by bk1bennett View Post
I thought that the longer prop would be more efficient and give me more to work with if we have to dress it out. I could be completely wrong, but when you have to make a decision fast, you don't over-analyze.
There's no dressing out big dings or cutting down the tip on a composite blade.
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EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 2000+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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  #7  
Old 07-16-2021, 06:41 PM
JET14 JET14 is offline
 
Join Date: Aug 2019
Location: Ridgeway, SC
Posts: 31
Cool

Quote:
Originally Posted by Bernie View Post
I am close to ordering my engine/propeller combo from Vans. I am building the tailwheel version of the RV-14. If I am reading it right, the Vans website recommends one Propeller from Hartzell and one from MT. The Hartzell prop is the 72" two blade aluminum blended airfoil priced at $8760. The MT prop the 72" three blade composite priced at $15,300. Thoughts and comments from those in the know would be most appreciated.

Thanks, Bernie

RV-14, 140587, N914BF reserved, building for two years
RV-4, SN3630, N904BF modified for my 6'7" frame, flying since 5/2020
I bought the Hartzell for my 14 when the mad rush started on June 29th.
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  #8  
Old 07-16-2021, 06:50 PM
KatanaPilot KatanaPilot is offline
 
Join Date: Feb 2015
Location: Locust Grove, GA
Posts: 732
Default

Quote:
Originally Posted by Carl Froehlich View Post
The standard Hartzell two blade BA prop is, IMO, the best value choice. While the composite Hartzell and MT props are nice, the huge price increase along with no data that they provide any performance gain over the standard prop moves them out of my decision process.

I build three RVs with this prop, and will use it again on the current build.

Carl
If around 100 pounds of additional static thrust qualifies as "no performance gain", then your position might be valid. In my experience, the Hartzell composite prop is awesome for getting off the runway and is really nice in formation flying too.
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Krea Ellis

Locust Grove, GA
DA20-A1 "Princess Amelia" - gone home to Amelia Island
RV-7A Phase 2 (Honored to be Van's "Miss July" 2021)
RV-10 under construction at Synergy Air South

Last edited by KatanaPilot : 07-16-2021 at 06:51 PM. Reason: added qualifier
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  #9  
Old 07-17-2021, 10:06 AM
Don E Don E is offline
 
Join Date: Aug 2016
Location: West Chester, PA
Posts: 133
Default My two cents...

I built a 14 and am using the 72” Hartzell BA prop. Great prop, great performance. I’d definitely stay with 72” on the 14, whereas 74” is fine on the 14A.

Bear in mind that you will be taking the cowling off many many times, and it is a good bit more difficult with a 3-blade prop. Getting it back on, especially.

But they are sexier.
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  #10  
Old 07-17-2021, 11:09 AM
Mark33's Avatar
Mark33 Mark33 is offline
 
Join Date: May 2010
Location: Baton Rouge, La.
Posts: 757
Default

Quote:
Originally Posted by Don E View Post
I built a 14 and am using the 72” Hartzell BA prop. Great prop, great performance. I’d definitely stay with 72” on the 14, whereas 74” is fine on the 14A.

Bear in mind that you will be taking the cowling off many many times, and it is a good bit more difficult with a 3-blade prop. Getting it back on, especially.

But they are sexier.
So why the 72” on the -14 (taildragger)? I know the 72” is recommended for the -7, but I think the -14 sits up taller than the -7. I may be selling my -7 Q.B. kit and switching over to the -14, so this subject is of interest to me. I already have the 72” and it’d be nice if in fact it’s a good choice for the -14. That’d keep me from having to sell my 72” and then having to buy the 74”. So us there no real performance differences in the two props?
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RV-7- IO-360, EFII, Whirl Wind C/S, (Built and sold)
RV-4- O-320, Catto three blade, P-Mags (Sold)
RV-8- IO-360, Hartzell C/S (Flying)
RV-7- (Building)
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