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Lifting Capabilities of RC Helicopters?

Keith6530

Heliman

Zionsville, Indiana - USA

I am helping a middle school team of kids with a science project. They are looking for a helicopter that can lift various household items from the floor to an 8 foot tall tower and then retrieve them back again. The objects include a can of soup, a sponge, a golf ball, etc. They are trying to figure out which radio controlled helicopter would work best for these tasks with one of their biggest concerns being the lifting capacity of some of the helicopters. They will also be judged on the cost compared to the other teams. So, their goal would be to find the lowest cost helicopter to accomplish their tasks. Could someone provide some recommendations based on their experience? Thanks.

12-13-2010 Over year old.
Supercoolheli

Key Veteran

Flower Mound, Texas

there's a variety of cheap coaxials (easiest helis to fly). Of course for someone buying one for a project alone they might seem expensive. I'd reccomend the E-Flite Blade CX2. It runs about $170. It's kind of small and i'm sure it could lift a sponge if you made a harness of some sort to hold the item. Not sure about the soup as it would probably be heavier than the heli. As far as i can think, with needing to lift a can of soup, most of the small cheaper helis are out. But others might know of some. There also is the HK450, which is purchased from china (yes looong shipping waits) and the kit is only $59 but the bad thing is that is just the kit. The other electronics to make it fly cost much more than that. Maybe if you could give us an idea of your budget it'd be easier to reccomend some

Eric Olson:
Team SAB
Team Pulse Ultra

12-13-2010 Over year old.
jschenck

rrProfessor

La Vista, NE.

RC Blimp -

They'll be in high school before they learn to fly a heli capable of lifting those objects and will *definitely* bust any kind of reasonable budget.

Team GrandRC

12-13-2010 Over year old.
Supercoolheli

Key Veteran

Flower Mound, Texas

yeah. Budget'll have to be pretty high to get a heli capable, plus all the time that it will take to teach the kids...that being said i started at that age but sitll the budget might be not worth a project

Eric Olson:
Team SAB
Team Pulse Ultra

12-13-2010 Over year old.
FLYINFOOL

Key Veteran

Cudahy, WI

The can of soup is the one that will push it to a fairly expensive heli.
I would think a 500 or bigger. The rest of the items listed could be handled with a 450 size. The 450 might be able to get the can up there but I think it would be right on the very edge of the performance envelope and may require the best of motor$ and batterie$.

Not to mention that it will take a long learning curve to acquire the flight skills to perform such a task.


Jeff Borowski
RAMS Club President
www.ramsrcclub.com

12-13-2010 Over year old.
HOMEPAGE  
Dusty1000

Senior Heliman

Glasgow, U.K.

Not to mention that it will take a long learning curve to acquire the flight skills to perform such a task.
That would be a 'project' in itself.

Even for an experienced pilot, rc helis are hard to be accurate enough with to pick things up

Watch at YouTube

I would go for a coaxial as suggested above, which are considerably slower and much easier to learn to fly. The Esky Lama would be my choice, but like the CX2, it won't be able to lift a can of soup.

Dusty

12-13-2010 Over year old.
Pistol_Pete

rrProfessor

Seffner, FL

The larger the heli, the larger the payload capabilities. Something we can all agree in here (for a change)

For a can of soup, @ 12oz to 15oz, a 500 electric size heli is most likely the minimum with an average cost of over $5oo not including learning curve.

And that pretty much sums up the experiment.

Of all the remote control toys, helis are the hardest to learn.

Perhaps the following link is the way to go with a 700gram payload..

http://www.amazon.com/Gaui-330X-S-F...92281077&sr=8-8

Still needs radio, receiver, battery and a means to charge it. But definitely easy on beginners. Still over $500 cost.

...4 out of 3 don't get fractions...

12-13-2010 Over year old.
HOMEPAGE  
rcjon

Veteran

Macon, GA

For Middle School, a better project would be how many helium filled balloons would be needed to just lift various objects. They could form the hypothesis, do the research, perform the calculations and then verify the hypothesis with testing. Hopefully they would learn the old scientific method instead of the new scientific method (Have someone go on the internet and ask).

Ask your doctor if your heart is healthy enough for Radio Control Helicoptering.

12-14-2010 Over year old.
fung_jeff

Key Veteran

Vancouver, BC, Canada

Go t ebay and buy this

VERY BIG COAX heli...

Jeffrey Fung...15 Years old - FLEET: Evo 50, Raptor 30, Trex 500, SDX's, X-Spec, Logo 10/400

12-14-2010 Over year old.
Havoc

Elite Veteran

Ky.

I'd say a better middle school project in budget would be to get a simulator and teach them some basic flight physics. It will be as educational (probably much more) and you can hand it to any of your students without danger or crash cost. While you will get into a long debate on which sim is 'best', I'd use one that comes with the TX for ease and simplicity.

12-14-2010 Over year old.
ch-47c

Elite Veteran

san jose, ca

Is this a class science project or intramural team competition? Is the objective to calcuate lift capability and then prove it by lifting the objects or calculate the lift capability and compare costs?

Should be able to enlist help from an rc club with helis of various sizes to demo lift. Put objects in an orange or potato sack and hook onto a skid.

12-14-2010 Over year old.
Dood

rrProfessor

Wescanson

For Middle School, a better project would be how many helium filled balloons would be needed to just lift various objects. They could form the hypothesis, do the research, perform the calculations and then verify the hypothesis with testing. Hopefully they would learn the old scientific method instead of the new scientific method (Have someone go on the internet and ask).
+1 to what rcjon said.

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12-14-2010 Over year old.
ch-47c

Elite Veteran

san jose, ca

Maybe they are studying rotory-wing flight and want to apply the calculations to a rotor disk area instead of to a volumne gas.

The first time my math teacher applied calcs to a helicopter, my interest in math grew. I just couldn't stay awake with problems with glasses of water or farm fields and the the like. It was actually a very simple problem of a helicopter that crashed into a farmers field and parts were thrown across an area with many different sides of different lengths. It really had nothing to do with the heli, but it changed my focus.

That's what makes a great teacher when they can get someone interested and transfer knowledge. Just my 2 cents worth.

12-14-2010 Over year old.
Smok

Senior Heliman

Antwerp, Belgium

How about safety ? any bigger heli in newbie hands is a danger of someone getting hurt. If indoor, in a class, then it borders on recklessness... just my 5c

12-14-2010 Over year old.
Charlie R

Senior Heliman

Lafayette Ca

If money was not a proublem ,witch it always is. I get a Yamaha Heli .
http://www.yamaha-motor.co.jp/globa.../02/28/sky.html

Helicopters are a mass of rotating metal fatigue surrounding an oil leak !

12-14-2010 Over year old.
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