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  #1  
Old 04-29-2022, 08:06 PM
Walt's Avatar
Walt Walt is offline
 
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 6,916
Default MT prop/shout out to McFarlane

Ordered on Monday received this beauty on Friday, The service at McFarlane is superb!
Installed and balanced, looking at some test flight’s with it tomorrow.
MTV-9 replacing the Hartzell BA.

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Walt Aronow, DFW, TX (52F)

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, MTV-9 prop
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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  #2  
Old 04-30-2022, 02:07 PM
riseric's Avatar
riseric riseric is offline
 
Join Date: Oct 2011
Location: Québec, CNV9
Posts: 593
Default Nice !!

Nice !!!
I have the same, can't compare as it's the only one I flew with.
I can say that it works flawlessly up to now. Only 40 hours done.


Looking forward to read your first impressions and any comments on the difference with the BA.
__________________
Eric,
2022 =VAF= paid
RV-8 SB #83274
Grove Airfoiled Gear, Wheels & Brakes
VPX-Pro, EFII System 32, EarthX batteries
Aerosport IO-375, MTV-9-B/183
Skyview HDX
C-GEMQ, RV-8, "Dragonfly", flying
C-GNFJ, C72R Cutlass, flying
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  #3  
Old 04-30-2022, 04:37 PM
jrock836's Avatar
jrock836 jrock836 is offline
 
Join Date: Nov 2020
Location: Burleson, Texas
Posts: 365
Default

Looks great. I certainly don't need a 3 bladed prop, but they sure look good!
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Joe
2013 RV-12ULS
Fort Worth, TEXAS!
LSRM-A

EAA #1409566
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  #4  
Old 04-30-2022, 07:49 PM
Walt's Avatar
Walt Walt is offline
 
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 6,916
Default

Flew about 4 hrs today with the new prop, a few observations:

Definitely smoother at all RPM ranges, can dial eng back as far as 2100 or less, which I would never do with the Hartzell and it was smooth the whole time. Did a 3 hr cross country and settled in with 2300 as a sweet spot compared to 2400 on the Hartzell. Do to low ceilings was never able to get above 4500ft.

Braking is insane, pull the power all the way back and the brakes are full on. Will need to adjust my "normal" landing profile, need to keep a little power in or she will start slowing quickly, great for steep approaches.

Idle RPM had to backed off a bit, it jumped up about 50 RPM.

Quick to spool up and shut down, the reduction in inertia is evident.

Not sure about cruise speed, although it seems pretty close to what I was seeing before. Need to get up to 8000-10,000 and see how it does.

With only a couple of take-offs to evaluate, but seems like improve climb, shorter ground roll.

Spinner fit perfect, exactly where my other one was, and all prebuilt, no drilling required!

About a 4-5lb weight loss off my nose which I am glad to have.

Quieter, noticeable improvement is sound level.

Overall, very very pleased.

__________________
Walt Aronow, DFW, TX (52F)

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, MTV-9 prop
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154

Last edited by Walt : 05-01-2022 at 06:49 AM.
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  #5  
Old 05-01-2022, 06:10 AM
Skykingbob's Avatar
Skykingbob Skykingbob is offline
 
Join Date: May 2012
Location: Bealeton Virginia
Posts: 598
Default Fantastic

Hey Walt,

Thanks for the initial PIREP! My buddy Jim and I both have one......although the are currently flying in the shipping crate waiting for the airplane build to catch up with it

How far off was the balance initially and how close did you get the balance dialed in? Keep practicing that balancing because I intend on flying my airplane out there and have you do it haha.

I will be very interested in future about the performance and opinions on the MTV-9.

Thanks for posting!
__________________
Bob "Skyking" Corriveau
"PRINCE TRAPPED IN A PILOT'S BODY"
Yes I paid my =VAF= membership dues!
RV-8 QB Reserved N212KB
ATP
CFI/CFII/MEI

Build Site: http://www.mykitlog.com/skykingbob/

"Nothing worthwhile has ever been accomplished without inspiration, determination, and perspiration!"
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  #6  
Old 05-01-2022, 08:36 AM
Walt's Avatar
Walt Walt is offline
 
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 6,916
Default

Quote:
Originally Posted by Skykingbob View Post
Hey Walt,

How far off was the balance initially and how close did you get the balance dialed in? Keep practicing that balancing because I intend on flying my airplane out there and have you do it haha.

I will be very interested in future about the performance and opinions on the MTV-9.

Thanks for posting!
The Dynamic balance started at 0.310 which is on the high side, finished at 0.011 ips after 4 runs which is a very low level, better than average.
(my goal is 0.05 IPS after balance which is half the 'after balance' limit)

So despite people thinking their composite props feel smoother, which they generally do, they can still benefit significantly from a dynamic balance which every prop manufacturer recommends.

Red circle indicates upper limit of 0.2 IPS

__________________
Walt Aronow, DFW, TX (52F)

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, MTV-9 prop
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154

Last edited by Walt : 05-01-2022 at 09:14 AM.
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  #7  
Old 05-01-2022, 09:33 AM
BTG1996 BTG1996 is offline
 
Join Date: Oct 2021
Location: San Antonio, TX
Posts: 67
Default Great PIREP

Really cool information- thanks for posting!
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Wing Kit received 7/11/22
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Dues paid 12/21
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  #8  
Old 05-01-2022, 11:50 AM
Rick_A's Avatar
Rick_A Rick_A is offline
 
Join Date: Oct 2005
Location: Jacksonville, FL
Posts: 1,632
Thumbs up Performance testing

Good info on the performance tests and balancing. I can hardly wait to get the new prop on my plane
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Rick Aronow,
Flying 7A Slider;
RV-12 SOLD
Jacksonville, FL
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  #9  
Old 05-01-2022, 12:03 PM
Planecrazy232's Avatar
Planecrazy232 Planecrazy232 is offline
 
Join Date: Aug 2015
Location: Cape Coral, FL
Posts: 504
Default

Walt,

I have the same prop on my 6A, O360. Mine is super smooth except for when I throttle way back in cruise, say to 11in mp. Definitely get good braking, but also feel vibration at that setting. Do you feel the same?
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Thanks,

Anthony

RV6-A "Aluminum Mistress"
Too many hobbies- not enough time.
2016, 2017, 2018, 2019, 2020, 2021, 2022 donor and happy to do it.
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  #10  
Old 05-01-2022, 06:48 PM
riseric's Avatar
riseric riseric is offline
 
Join Date: Oct 2011
Location: Québec, CNV9
Posts: 593
Default

Thanks Walt for the pirep.
Here's what I observed:

I do concur that I find acceleration and climb is stellar.
Again, no comparaison as it's the only prop I had on the 8.
All passengers comment on how smooth the engine is.

I do confirm that it brakes massively.
So much so that now, on downwind, I just increase the RPM to 2500ish and leave it there. In case of Go-Around, it's a short burst of 28 - 29 MP, quickly brought back to 25... It just zooms back in the air insanely...
Otherwise, it's too much braking...

I find that when heavy, or with a passenger, 2200 RPM and 75-80 KIAS on Base and Final gives +/- 400 Ft/min descend.
When solo and lighter, 2000/2100 RPM does the job until the numbers then flare and gradual power reduction.
I often or always land with some residual power... again, lot's of braking. Then idle when firmly on the runway.
I plan on having it balanced in the coming weeks.
__________________
Eric,
2022 =VAF= paid
RV-8 SB #83274
Grove Airfoiled Gear, Wheels & Brakes
VPX-Pro, EFII System 32, EarthX batteries
Aerosport IO-375, MTV-9-B/183
Skyview HDX
C-GEMQ, RV-8, "Dragonfly", flying
C-GNFJ, C72R Cutlass, flying
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