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MadMuz
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Joined: Tue Sep 02, 2014 7:45 am Posts: 10129 Location: Poona, Qld, OZZY
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Ray, the most efficient prop is one blade (with a counter balance) because there is no interference from another blade.... 2 blades is realistically the best, but with more Hp, the length of the prop blades (diameter) becomes too great to transfer the Hp to thrust.... so if you cant fit an 80" 2 blader, you fit a 60" 3 blader..... that is why the spitfire went from big 2 blade props, to 3, 4 and 5 bladed props as the engine Hp increased. A 2 bladed prop gives aircraft a smoother cruise, but not as good climb performance (in general) a 3 blade prop generally gives better climb performance.... 3 and 4 blades are good on a gyro because generally gyros are so draggy, the motor/prop thinks it is climbing when flying s&l and gyros are normally hammering, not cruising at 65-70% throttle like a slippery FW. Often 3,4, or 5 blades on a slippery FW cruising at 200knots at 70% throttle don't feel smooth and often develop a little resonance with high speed and the relative airflow hitting on the multiple blades of the prop... that is why a lot of these planes use a 2 blade. Because gyros are a relatively slow speed, highish drag machine.... 3 is good, 4 is good.... 2 works.... depends on how much thrust it can make
_________________ I do all of my own stunts..... most of them are even planned! Ok, Ok.... some of them are planned..
If electricity comes from ELECTRONS, then surely morality comes from MORONS??
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Mon Dec 15, 2014 6:27 am |
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GyroGeorgia
Joined: Thu Dec 05, 2013 9:38 pm Posts: 2541 Location: Atlanta GA area
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MadMuz wrote: Ray, the most efficient prop is one blade (with a counter balance) because there is no interference from another blade.... 2 blades is realistically the best, but with more Hp, the length of the prop blades (diameter) becomes too great to transfer the Hp to thrust.... so if you cant fit an 80" 2 blader, you fit a 60" 3 blader..... that is why the spitfire went from big 2 blade props, to 3, 4 and 5 bladed props as the engine Hp increased. A 2 bladed prop gives aircraft a smoother cruise, but not as good climb performance (in general) a 3 blade prop generally gives better climb performance.... 3 and 4 blades are good on a gyro because generally gyros are so draggy, the motor/prop thinks it is climbing when flying s&l and gyros are normally hammering, not cruising at 65-70% throttle like a slippery FW. Often 3,4, or 5 blades on a slippery FW cruising at 200knots at 70% throttle don't feel smooth and often develop a little resonance with high speed and the relative airflow hitting on the multiple blades of the prop... that is why a lot of these planes use a 2 blade. Because gyros are a relatively slow speed, highish drag machine.... 3 is good, 4 is good.... 2 works.... depends on how much thrust it can make Good post Muz.... I do not know about others.... however I do not want to have to use a step ladder to get to the seat... so I can have a 7 or 8 ft 2 blade prop, and still have centerline thrust...
_________________ John Morgan PP-SEL Former member PRA Member PeachState Rotorcraft club Member Sunstate Rotor & Wing Club Owner/builder of The Subinator: Single place Dominator/Subaru EA-81 (currently in full restoration) Soon to offer machine shop services
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Mon Dec 15, 2014 9:49 am |
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loftus
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Magnificent afternoon flight today from KDED to Umatilla with Larry and Bernice. Just spectacular weather.
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Mon Dec 15, 2014 9:44 pm |
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Gabor
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Joined: Sat Nov 02, 2013 2:18 pm Posts: 11382
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Really nice. I wish I lived close by.
_________________A walk in the woods helps me relax and release tension. The fact that I am dragging a body should be entirely irrelevant! A simple thank you would have been enough for the morning coffee without all that "how did you get in here" nonsense.
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Mon Dec 15, 2014 9:54 pm |
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Dropbear
Joined: Tue Nov 05, 2013 9:30 pm Posts: 1248 Location: UP A GUMTREE
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Gabor wrote: Really nice. I wish I lived close by. Gotta get a winter -pad in FL!!! ...... this Kansas cold ... just sucks 'n blows!!! Yeah ..... lofty .... very nice!
_________________
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Mon Dec 15, 2014 10:08 pm |
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GordonT
Joined: Sat Nov 02, 2013 2:25 pm Posts: 1260 Location: Central Florida
Has thanked: 820 times
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The third picture looks like you are looking south at Lake Beresford. I am a little over a mile west from the northernmost tip of that lake!!
_________________ “If things go wrong, don't go with them.” ..... ― Roger Babson “People say there are thousands of options we have in life. I say we have only two: we can either be happy or be unhappy.” ..... ― Pawan Mishra
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Mon Dec 15, 2014 10:13 pm |
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Animal
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great pics, looks like a fun flight. I cut down another big tree in the front yard, now got an even better view of the sky.. we never know what will fly over us here. here is what flew over yesterday.
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Mon Dec 15, 2014 10:22 pm |
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Gabor
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Joined: Sat Nov 02, 2013 2:18 pm Posts: 11382
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Guess what I got for you biatches! A new fridge! It is awesome. Let it be summer now. See ya guys tomorrow at the hangar.
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_________________A walk in the woods helps me relax and release tension. The fact that I am dragging a body should be entirely irrelevant! A simple thank you would have been enough for the morning coffee without all that "how did you get in here" nonsense.
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Sat Feb 21, 2015 10:33 pm |
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Greg Spicola
Joined: Sat Aug 23, 2014 9:46 pm Posts: 88
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That is a very nice refrigerator. Think of all the beer you be able to keep cool in there. Oops root beer im mean
_________________ I like to Fly!..... A lot!!!!!
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Sat Feb 21, 2015 10:50 pm |
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Gabor
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Joined: Sat Nov 02, 2013 2:18 pm Posts: 11382
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We are gonna have the real stuff in there !!! Deze boyz don't drink crap I tell ya.....
_________________A walk in the woods helps me relax and release tension. The fact that I am dragging a body should be entirely irrelevant! A simple thank you would have been enough for the morning coffee without all that "how did you get in here" nonsense.
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Sat Feb 21, 2015 10:51 pm |
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Animal
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Gabor wrote: Guess what I got for you biatches! A new fridge! It is awesome. Let it be summer now. See ya guys tomorrow at the hangar. what time will ya be out there? whos flying?
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Sat Feb 21, 2015 10:57 pm |
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Gabor
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Joined: Sat Nov 02, 2013 2:18 pm Posts: 11382
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we are all flying 7 am
_________________A walk in the woods helps me relax and release tension. The fact that I am dragging a body should be entirely irrelevant! A simple thank you would have been enough for the morning coffee without all that "how did you get in here" nonsense.
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Sat Feb 21, 2015 11:02 pm |
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Flying Wolverine
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All right....nice pc. of shop equipment....freeze bearings for ease of installation...cool down hot pcs. of metal. A place for your thumb after smashing it with a hammer to reduce swelling... Add some ice cubes to the nitrous........ Hell on a HOT HOT day a good place to hang out in front of the freezer with the door open!!!! Oh and yeah...it's not a shop fridge without kewl, cool beverages!!! And a couple of ice cream sandwiches!!!!
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Sat Feb 21, 2015 11:02 pm |
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Animal
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Gabor wrote: we are all flying 7 am I can't ever get Cindi out of bed by then... where ya flying to?
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Sat Feb 21, 2015 11:11 pm |
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Gabor
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Joined: Sat Nov 02, 2013 2:18 pm Posts: 11382
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What a gorgeous day to fly?????????? I love Florida.
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_________________A walk in the woods helps me relax and release tension. The fact that I am dragging a body should be entirely irrelevant! A simple thank you would have been enough for the morning coffee without all that "how did you get in here" nonsense.
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Sun Feb 22, 2015 3:36 pm |
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MadMuz
Site Admin
Joined: Tue Sep 02, 2014 7:45 am Posts: 10129 Location: Poona, Qld, OZZY
Has thanked: 21874 times
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_________________ I do all of my own stunts..... most of them are even planned! Ok, Ok.... some of them are planned..
If electricity comes from ELECTRONS, then surely morality comes from MORONS??
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Sun Feb 22, 2015 3:41 pm |
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loftus
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I think I was scratching my ass, or rearranging my package.
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Sun Feb 22, 2015 5:51 pm |
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Animal
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where did ya'll fly to, I see Gordon was shoe horned into the back of that Red Gyro,I never can spell the name of those.
sadly Cindi was sick as a dog all day, think she got food posioning at the wendy's in deland. she is doing better today.
we did have a flight of 5 of this guys fly over the house that was pretty cool.
Note the side winder under the wing. bet the must have been at the bombing range. Funny I did not even know there was one near here..lol that would explain all the explosions we heard one night shortly after we moved here.
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Tue Feb 24, 2015 9:42 am |
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MadMuz
Site Admin
Joined: Tue Sep 02, 2014 7:45 am Posts: 10129 Location: Poona, Qld, OZZY
Has thanked: 21874 times
Been thanked: 6221 times
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_________________ I do all of my own stunts..... most of them are even planned! Ok, Ok.... some of them are planned..
If electricity comes from ELECTRONS, then surely morality comes from MORONS??
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Tue Feb 24, 2015 10:18 am |
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Animal
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it really is, I am right near 2 airports and like I have said I never know what I will see fly over, but I try to keep my camera close. this place has all 3 of the things I love, aircraft. harleys and Airboats. I rode on an airboat in 2012 when I came to display my helicopter at sun-n-fun. stayed at a biker buddy house and his buddy had a bad ass 700 h.p. airboat he took Cindi and I for a ride on. now I keep seeing them around here and started Followinga few air boat pages on face book and got hooked.
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Tue Feb 24, 2015 10:42 am |
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