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  #1  
Old 03-17-2020, 09:03 PM
no7rosman no7rosman is offline
 
Join Date: Aug 2018
Location: Johnstown
Posts: 54
Default Cowling Mod for 3-blade prop

Hello,

I installed a new 3-blade prop and getting ready to modify the lower cowling to get it on. It is the MT Prop on a RV9A with a O-360 in it.

Based on other threads it looks like the only modification is extending the groove for the nose wheel about 10"

Is this correct? Wanted to double check before I start cutting.

Any other advise for this would be appreciated.

Thanks,
Ross
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  #2  
Old 03-18-2020, 08:34 AM
rvbuilder2002's Avatar
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,253
Default

Extending the length of the gear leg slot in the bottom cowl should be all the is necessary, but an additional 10 inches sounds a bit excessive.

I suggest you start with 6 inches and see if you can get it on and off. Incrementally increase it as needed, until you can.
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Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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  #3  
Old 03-18-2020, 10:24 AM
no7rosman no7rosman is offline
 
Join Date: Aug 2018
Location: Johnstown
Posts: 54
Default

Sounds good. Thanks for the feedback.
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  #4  
Old 03-18-2020, 05:04 PM
oaklandaviator oaklandaviator is offline
 
Join Date: Dec 2014
Location: Somerville, Tn and Little Rock, Ar
Posts: 133
Default Snorkel

If yours has the snorkel underneath and you want s bit bigger project, cut it off and glass in a new back plate with dzeus receptacles. If the snorkel is removable, it is much easier to get the lower cowling on and off. Also, a lot of maintenance can bee done without removing it at all. We did this to my wife's RV-3 and it's a great mod.
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  #5  
Old 03-19-2020, 07:21 AM
no7rosman no7rosman is offline
 
Join Date: Aug 2018
Location: Johnstown
Posts: 54
Default

Thanks for the advice. Right now I am more excited to fly my new prop and don't want to start on a project that big. I cut the 6" slot yesterday and it worked perfect. The cowling went on pretty easy. Unfortunately, I need to trim the back of the spinner now because it's too tight.

Once she is back in the air I'll look into the snorkel removal mod.

Thanks!
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  #6  
Old 03-19-2020, 08:25 AM
PerfTech's Avatar
PerfTech PerfTech is offline
 
Join Date: Sep 2010
Location: Redlands, Ca.
Posts: 1,497
Default Must Have From ASA

?.Many people are not aware of one of our new products now available on our
website that vastly improves your odds of not doing paint and glass damage
when removing your lower cowl or working on your plane. You just pop this on
and you will have some serious protection in place. Please have a look and let
us know your thoughts. Thanks, Allan...
.

.
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Allan Nimmo
AntiSplatAero.com
Innovative Aircraft Safety
Products, Tools & Services
Info@AntiSplatAero.com
Southern California (KREI)
RV-9A / Edge-540
(909) 824-1020
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  #7  
Old 03-19-2020, 08:48 AM
philb philb is offline
 
Join Date: Apr 2005
Location: Salt Lake City
Posts: 180
Default

OMG, gonna get me one-

I always lay down a couple strips of duct tape down the fairing when I drop the cowl, then spent half hour with mineral spirits getting the gunk off - this is the perfect solution!!!

Phil
Bountiful, Utah
RV-10
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  #8  
Old 03-19-2020, 09:01 AM
PerfTech's Avatar
PerfTech PerfTech is offline
 
Join Date: Sep 2010
Location: Redlands, Ca.
Posts: 1,497
Default

Quote:
Originally Posted by philb View Post
OMG, gonna get me one-

I always lay down a couple strips of duct tape down the fairing when I drop the cowl, then spent half hour with mineral spirits getting the gunk off - this is the perfect solution!!!

Phil
Bountiful, Utah
RV-10
...These really do work great, and they will last the life of your airplane! We
have them for all RV models as well as many other aircraft. Thanks, Allan..
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Allan Nimmo
AntiSplatAero.com
Innovative Aircraft Safety
Products, Tools & Services
Info@AntiSplatAero.com
Southern California (KREI)
RV-9A / Edge-540
(909) 824-1020
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  #9  
Old 03-19-2020, 12:12 PM
9GT's Avatar
9GT 9GT is offline
 
Join Date: Jan 2010
Location: Southern Michigan
Posts: 2,098
Default

Quote:
Originally Posted by oaklandaviator View Post
If yours has the snorkel underneath and you want s bit bigger project, cut it off and glass in a new back plate with dzeus receptacles. If the snorkel is removable, it is much easier to get the lower cowling on and off. Also, a lot of maintenance can bee done without removing it at all. We did this to my wife's RV-3 and it's a great mod.
I did this on my last RV-10 and also did it on my -9A I am building now. It makes the lower cowling removal a breeze, especially on a 3 blade prop like I have on the -9A.
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David C.
Howell, MI
RV-10: #41686 Under Construction
RV-9A: #90949 Under Construction
RV-10: #40637 Completed/Sold 2016
Cozy MKIV:#656 Completed/Sold 2007
"Donor Exempt" but donated through Dec. 2021
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