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07-26-2019, 05:59 PM
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Join Date: Aug 2011
Location: New London, NC (near Charlotte), Boulder, CO
Posts: 271
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Looked at the new three-blade prop
After being at the show all week, I finally saw the new prop at the Van's tent. It has the same diameter as the two-blade prop, and therefore a much narrower chord. It reminds me of the props I see down at the south end of the field at the ultralight strip, whereas the standard two-blade prop looks much more substantial. Supposedly the three-blade is a bit lighter (didn't expect that) and has a slight performance improvement in some areas, owing, I guess, to the higher aspect ratio of the individual blades. Speaking to the Van's crew, I get the feeling that they think the performance is a toss up. I've decided to stick with two blades.
Jerre
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07-26-2019, 06:28 PM
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Join Date: Sep 2015
Location: Oregon
Posts: 798
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Do you have any photos? Photos would be great!
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Kentlik
RV-7A in progress
http://www.imdb.com/name/nm0527486/?
Private pilot, ASEL!
EAA 105 Chapter 7S3
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"The credit belongs to the man who is actually in the arena..." Teddy Roosevelt
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07-26-2019, 06:31 PM
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Join Date: Aug 2011
Location: New London, NC (near Charlotte), Boulder, CO
Posts: 271
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Quote:
Originally Posted by kentlik
Do you have any photos? Photos would be great!
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Sorry, I didn't take any pics. |
07-26-2019, 06:39 PM
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Join Date: Dec 2005
Location: San Pedro
Posts: 1,013
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Wondering
Wonder if it the same prop that the two place Sling uses? 
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Building finally
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07-26-2019, 09:11 PM
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Join Date: Sep 2005
Location: Southwest Michigan
Posts: 180
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Quote:
Originally Posted by E. D. Eliot
Wonder if it the same prop that the two place Sling uses? |
I don't believe it is. IIRC the sling uses an Airmaster or a Warpdrive and Vans is using a Hartzell.
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Joe
RV-12 Empennage
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07-26-2019, 10:16 PM
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Join Date: Jul 2012
Location: North Brunswick, NJ
Posts: 163
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Jerre, I'd be interested to know if there is a noticeable, or substantial noise difference between the two props.
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Rob Carsey, North Brunswick NJ
RV-12iS (N713)
Tail 100% done
Wings 95% done (AOA)
Fuse 100% done
Finish 100% done (cowl)
Avionics 100% done
Dues paid 2019
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07-27-2019, 04:46 PM
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Join Date: Jun 2018
Location: Bonaire, GA
Posts: 7
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Quote:
Originally Posted by rcarsey
Jerre, I'd be interested to know if there is a noticeable, or substantial noise difference between the two props.
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Vans reported the decibel difference is negligible (about 1.0-1.5 dB) |
07-27-2019, 09:19 PM
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Join Date: Aug 2011
Location: New London, NC (near Charlotte), Boulder, CO
Posts: 271
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Quote:
Originally Posted by rcarsey
Jerre, I'd be interested to know if there is a noticeable, or substantial noise difference between the two props.
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The three-blader I saw wasn't mounted on an airplane. All the 12s I saw fly had the two, I think. I would think the acoustic signature would be a bit different.
Jerre |
07-27-2019, 10:45 PM
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Join Date: Jul 2007
Location: Litchfield Park, AZ
Posts: 1,017
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I took pics but posting them will have to wait a day for better WiFi connection. Tomorrows end of day travels at the hotel should do it. The 3 blade info card said it's coming soon.
UPDATE: link to pics is https://photos.app.goo.gl/kioZh6qXPtWzCaec8
I'm not well versed with a Apple IPad so posted images in the thread will be put up when I have access to my PC at home Tuesday.
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Carlos in Arizona
EAA Chapter 538 www.chapters.eaa.org/eaa538
Wittman Tailwind W8 N53CH (built & sold)
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RV7 - N537TC (reserved & building)
Emp, Wings & Fuse done - working on FWF
"The air is an extremely dangerous, jealous and exacting mistress. Once under the spell most lovers are faithful to the end, which is not always old age." - Winston Churchill
Last edited by pazmanyflyer : 07-28-2019 at 03:45 PM.
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07-28-2019, 09:56 AM
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Join Date: Sep 2005
Location: Southwest Michigan
Posts: 180
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Has Vans mentioned a price yet?
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Joe
RV-12 Empennage
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