Thrust needed for 3D
04-28-2008 | 11:04 AM
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From: Glen Burnie,
MD
Thrust needed for 3D
Hey guys I was wondering what thrust is needed for comfortable 3D flying? The combination I am looking at should give me 15.4lb to fly a 12lb plane. Is that too low to for good 3D?
Mike
Mike
04-28-2008 | 12:24 PM
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From: Charlottesville,
VA
RE: Thrust needed for 3D
I've read that 1.5:1 is about as low as you want to go, but I can't remember where. You might be lacking a little in pull-out performance, but at about 1.3:1, you should be able to at least get started. 
04-28-2008 | 04:04 PM
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RE: Thrust needed for 3D
I once read that Jason Shulman was quoted saying 2:1 is desired.
I know you can get away with ratios just over 1:1 IF you have experience. If you DON'T have experience, that extra thrust is what saves you from damage when you make a mistake.
Extra power gives you that safety margin to get lower (where you can see what you're doing better) and if you want to bail, as long as the plane is pointed upward, you can just jam that throttle stick to the top and watch it rocket to safety. Without that power, you "slide sideways" and have to plan an exit strategy to avoid trees, objects or worse people!
Experts can recognize needs for corrections (I won't call them mistakes) much sooner, and will plan the need to vector the thrust as needed well before an "emergency situation" happens. That's why they can get away with less thrust.
Get a high powered foamie and a flight sim and you'll see what I mean.
I know you can get away with ratios just over 1:1 IF you have experience. If you DON'T have experience, that extra thrust is what saves you from damage when you make a mistake.
Extra power gives you that safety margin to get lower (where you can see what you're doing better) and if you want to bail, as long as the plane is pointed upward, you can just jam that throttle stick to the top and watch it rocket to safety. Without that power, you "slide sideways" and have to plan an exit strategy to avoid trees, objects or worse people!
Experts can recognize needs for corrections (I won't call them mistakes) much sooner, and will plan the need to vector the thrust as needed well before an "emergency situation" happens. That's why they can get away with less thrust.
Get a high powered foamie and a flight sim and you'll see what I mean.
05-02-2008 | 07:40 PM
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From: New Richmond,
WI
RE: Thrust needed for 3D
ORIGINAL: PE2fan
Hey guys I was wondering what thrust is needed for comfortable 3D flying? The combination I am looking at should give me 15.4lb to fly a 12lb plane. Is that too low to for good 3D?
Mike
Hey guys I was wondering what thrust is needed for comfortable 3D flying? The combination I am looking at should give me 15.4lb to fly a 12lb plane. Is that too low to for good 3D?
Mike
05-03-2008 | 12:40 PM
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From: Sailing in the Eastern Caribbean
RE: Thrust needed for 3D
YUP Not enough thrust if you are asking about 3D flying.
You need at least 1.5 to 1 and more is better. When it all goes wrong at 10 feet you want to be able to rocket out of the hover not just struggle out.
An experienced 3D pilot will cope lower power to weight but for learning more is better.
You need at least 1.5 to 1 and more is better. When it all goes wrong at 10 feet you want to be able to rocket out of the hover not just struggle out.
An experienced 3D pilot will cope lower power to weight but for learning more is better.
