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-   -   first time at hover (https://www.rcuniverse.com/forum/3d-flying-82/184544-first-time-hover.html)

blade_swinger 07-04-2002 06:51 AM

first time at hover
 
hey guys, im using a 73" cap h9 and 160 o.s. im new to hovering and have it pretty mastered on G2. after i practice high in the sky a bit im gonna go for it or at least hariers first. what should i expect when i put it into the hover is it aloot different than the sim? so if i get in trouble a good punch will pull it out of it? thanks for any tips
would their be a article online for this also? thanks guys -dan

EXCAP232 07-04-2002 08:06 AM

3D Articles online
 
Mike McConnville has quite a few on the Horizon Site. Bill

http://www.horizonhobby.com/

matlok 07-04-2002 08:24 AM

first time at hover
 
I'm just learning 3d myself, but here's my $.02 - I've got it down pat too on Realflight G2 but it feels very different in real life. On G2 I can torque roll the stock cap all day long, down to the ground, touch the tail several times, etc. In real life I'm lucky if I get 2-3 rotations. I think 12 is my best so far. I'm flying a Doghouse eXtreme/Saito .91, and have flown a friends H9 UltraStick 60/Saito 100 also. In real life it doesn't want to torque near as easily - your attitude (position) must be almost perfect for it to even think about starting to torque around. Depending on how it falls out and how you use the throttle, recovery seems about the same, maybe a little easier in real life. Like I said, I'm no expert, but that's my experience so far. I'm interested to see what others say about this too! Good luck!

WreckRman2 07-04-2002 10:47 AM

first time at hover
 
Sounds to me like a pretty expensive airplane to learn to hover on. If I were you I'd build something alot less expensive so when you dork it in your not out as much. I am learning on a Morris Knife with a Saito 72 for power. As for getting it to torque roll all it takes is a pefectly straight hover and she torque rolls like crazy. Good luck and have fun...

Chris 540 07-04-2002 04:41 PM

first time at hover
 
1 Attachment(s)
Yea.I'd recommend learning on a profile...WAY fun and you don't have to be scared to crash it! It will be harder to TR the small plane anyways...so when you can do it you'll be great with your cap.

blade_swinger 07-04-2002 07:37 PM

first time at hover
 
im kinda in the hole already gettin mah cap setup with hi tork n all futaba stuff. i thought the smaller the craft the harder it was to learn/hover wouldnt you be able to learn at higher altitude like 100 feet up?
how about harriers are they easy to do? do they want to snap out of it real bad? would my heavy cap have trouble doing it i think its around 14 pounds.
you guys are awesome thanks for the advise! -dan

Daniel Z 07-04-2002 11:28 PM

first time at hover
 
If you have a plane fully centered and neutral, it is EASIER than the sim, take special care to the thrust incidence

blade_swinger 07-04-2002 11:34 PM

first time at hover
 
oh thats interesting, it is indeed easier? what about thorrotle and blade pitch curves i hear so now its getting technical like a heli or sumthin? is it a big deal?

Daniel Z 07-04-2002 11:44 PM

first time at hover
 
if I understand your question... low pitch high diameter props are used to hover because of the increased giroscopic effect, more disc throwing air to the tail and more thrust and acceleration, they will give you less speed in normal flight, and the higher the pitch the plane wants more to torque roll instead of hover.
hope this helps

Chris 540 07-04-2002 11:48 PM

first time at hover
 
I wouldn't say hoveriung a real plane is easier....I've never heard anyone say that before...do you have a magic plane?

WreckRman2 07-05-2002 07:04 AM

first time at hover
 

Originally posted by Daniel Z
if I understand your question... low pitch high diameter props are used to hover because of the increased giroscopic effect, more disc throwing air to the tail and more thrust and acceleration, they will give you less speed in normal flight, and the higher the pitch the plane wants more to torque roll instead of hover.
hope this helps


It works like this:

High Diameter, Low Pitch = More Torque
Low Diameter, High Pitch = More Speed


If your wanting to 3D you'll want to run a high diameter, low pitch blade. This gives you the torque needed to hold the plane on the prop and the higher diameter helps throw air over the surfaces to control it being your flying in a stall. This is why 4 stroke motors are nice with 3D because they can swing a much larger prop vs a 2 cycle of the same size and with the larger prop you don't need the high rpms.

If you want speed you want high rpms (lower diameter) and a high pitch to move the air quickly. Take a Something Extra with an OS46 and a 10x7 prop for example. Sure it may go fast during level flight but pull it vertical and it will lose speed quickly. Take the same engine and mount an 11.5x4 prop and you can point it towards the sky and watch it go up with unlimited vertical however at the same time it won't go near as fast flying level. Take that same engine and mount a 11x6 and you'll have nice speed, not as fast as the 10x7 but not as slow as the 11.5x4, and decent vertical, not unlimited like the 11.5x4 but also won't fall out as quickly as the 10x7.

The trick here is to use the right prop for what you want to do with the airplane or find a prop in the middle that will allow you to enjoy the airplane and fly it to have fun...

blade_swinger 07-05-2002 07:10 AM

first time at hover
 
excellent advise -dan


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