Results 1 to 10 of 13
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05-10-2018, 10:42 AM #1
Anybody heard of tip fins or tip loading a propeller
So, I came across this propeller with tip fins on ebay. Seemed kinda strange. The ad said to look up "increasing propeller efficiency with tip fins". Made me wonder if it actually works and, if so, why ACME wouldn't already be doing this. Anybody seen this? Is it just a gimmick? Or is the difference so slight that it is just not worth the cost to produce? If someone posted this on April 1 I would be laughing.
https://www.ebay.com/itm/Acme-537-13...QAAOSwALhaXrX1
https://www.researchgate.net/publica...gh_Tip_Loading
https://www.nap.edu/read/5870/chapter/64My Mom said I'm not allowed to get wet!
2008 LSV (sold)
2000 Outback LS (sold)
LLTR!!!!!!!!
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05-10-2018, 10:59 AM #2
Didn't vornado do this with fans ..
A Day at the Lake...Priceless
A Day in Powder...Endless
Joe V
2012 Möbius XLV~ Loaded & Exiled
2007 Outback V ~ sold
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05-10-2018, 11:54 AM #3
Similar in theory as the the winglets on the ends of airliner wings. It helps prevent the pressure drop at the tips due to the vortices that occur there. Would be interesting to see how it performs on a boat, and also if there is an extra noise etc.
Sent from my iPad using Tapatalk2017 Moomba Craz
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05-10-2018, 12:07 PM #4
Looks like the q-tip airplane propeller. Seems like a good way to waste $345.
http://m.aviationweek.com/bca/remember-q-tip-prop
2019 Supra SL450
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05-10-2018, 12:19 PM #5
might just be the pic, but 3 tips look folded and the 4th looks rolled. I dont think the seller realizes they have just a bent prop
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05-10-2018, 12:25 PM #6
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05-10-2018, 02:37 PM #7
Gee, I bent 2 fins on my prop . . . think I'll just bend the other 2 to kinda match . . .
My Mom said I'm not allowed to get wet!
2008 LSV (sold)
2000 Outback LS (sold)
LLTR!!!!!!!!
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05-10-2018, 02:44 PM #8
They don't look to be all bent exactly the same. The vibration would be ridiculous.
2019 Supra SL450
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05-10-2018, 03:11 PM #9
"Sold as AS IS condition with no return"
2007 XLV Gravity Games
Full Wake Makers upgraded ballast and pumps
1,100 in each rear locker
1,180 in front
OJ 1435 prop, 325 EFI Indmar Assult.
Fresh Air Exhaust
SuckG8
Bunch of other crap
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05-10-2018, 03:15 PM #10
Sometimes known as cupped blades.
https://images.search.yahoo.com/sear...f&action=click1998 Mobius
310 HP PCM
SOLD