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  #1  
Old 04-16-2018, 02:50 PM
Adam W Adam W is offline
 
Join Date: Feb 2016
Location: Thornhill, Ontario, Canada
Posts: 90
Default prop choice

Hey all

canopy done engine hung yesterday, and on to the cowl. This had me thinking Do i need a propeller to properly fab up the cowl?
and if so, I'm not prepared research wise for that decision
I am constant speed, IO-360 Fuel injected with a cold air superior sump with horizontal intake. from a weight perspective its a slider with a G3X dual screen system and GTN650 planned. no steam gauges.
I guess the look and smoothness of three blade is the wish. question is composite or aluminium? and size?
I'm no expert on the W & B math so any advice here on what is best would be great. I expect the composite CS will be very expensive. I also heard the composite may cause an aft C of G reducing baggage capacity
id appreciate any advice on what prop to go with. my mission will include some shorter grass strips, but not under 1600 feet
im building a 7
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Adam Wachtel
Thornhill Ontario Canada
Building RV7 #70770
Wings done
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  #2  
Old 04-16-2018, 04:38 PM
Jpm757 Jpm757 is offline
 
Join Date: May 2013
Location: Sherman, CT
Posts: 137
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Adam,
Finished my -7 in Nov., now with 100hrs and counting. I have an IO-360 M1B with an MT 3 blade that I purchased thru Van's. I could not be happier with this combination. The delivery time was about 14 weeks on the prop and I was ready to fit my cowlings long before expected delivery. I rented the Flyboys cowlings installation tool and used the MT dimensions to fit the cowling. When the prop arrived (spinner mounted and painted), I just bolted it on and VIOLA! Perfect fit. Very smooth prop as well as good ground clearance for unimproved strips. My EW came in at 1081# CG 80.4 with dual AFS 5600 displays and autopilot. Pricier than the Hartzel, but if you figure in the spinner assy.and labor, its comparable.
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RV6 completed 1991 sold.
RV7 #72018 N767T first flight 11/21/2017
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  #3  
Old 04-16-2018, 08:03 PM
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9GT 9GT is offline
 
Join Date: Jan 2010
Location: Southern Michigan
Posts: 1,397
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The 3 blade MT I ordered last month for my -9A is through Tiffin Aire http://www.tiffinaire.com/en/Home.aspx . I saved considerable $$$$ going through them as apposed to Van's. They are a dealer and authorized service center for MT.
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RV-9A: Under Construction. N161RV (Reserved)
RV-10: N959RV Completed 12/29/2013 SOLD 08/23/2016

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  #4  
Old 04-17-2018, 07:47 AM
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Raymo Raymo is offline
 
Join Date: Nov 2014
Location: Richmond Hill, GA (KLHW)
Posts: 1,558
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I am quite happy with my Catto 3 blade NLE and 20 lb plate from Saber out front to keep CG very happy. Of course, my engine is has a solid crank, so I didn't really have a choice. If I were in need of getting in/out of short strips, as you mentioned, the CS would be the way to go. I'm sure it can be done with a FP prop but you'd need to be on your game every time, IMO.
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RV-7A - Slider - N495KL - First flt 27 Jan 17
O-360-A4M w/ Catto 3 blade NLE, AFP FM-150 FI, 1 PMag, Vetterman Trombone Exh, SkyTech starter,
PlanePower Alt, FlightLines Interior, James cowl & plenum
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  #5  
Old 04-17-2018, 09:56 AM
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mike newall mike newall is offline
 
Join Date: Jan 2005
Location: Yorkshire, England
Posts: 1,573
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MT 3 blade - awesome takeoff and landing performance, couple of knots slower cruise, but super smooth and great 'ramp presence' (I do hate that saying )
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