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Old Dec 13, 2008, 12:19 PM
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Joined Nov 2008
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rc motortrike

Hello, i want to do somethink like rc motorkite-rc parachute.
Like in the picture.
I have started to collect he engine and doing the frame.
Can anyone help me???
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Old Dec 13, 2008, 01:43 PM
Registered User
God's gift to mankind for flying anything.
Joined Aug 2004
3,090 Posts
Quote:
Originally Posted by dmpatanis
Hello, i want to do somethink like rc motorkite-rc parachute.
Like in the picture.
I have started to collect he engine and doing the frame.
Can anyone help me???
What exactly are you looking for ?
Help with what ?
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Old Dec 13, 2008, 11:09 PM
Master of the Figure "9"
hogflyer's Avatar
Wichita, Kansas
Joined Dec 2005
1,721 Posts
Have you done a search for power parachute yet?

Hogflyer
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Old Dec 14, 2008, 05:53 AM
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Joined Nov 2008
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I was wondering where i must put the CG in the motortrike.
When i put the parachute on it and lift it from the ground the mototrike must be in level -up - or down????
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Old Dec 14, 2008, 12:19 PM
I meant to do that
littlewing78's Avatar
Eagle Mountain, Utah
Joined Jul 2004
1,423 Posts
Did you fabricate that yourself? That looks pretty awesome. Looks like a heli nose on there.
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Old Dec 14, 2008, 04:26 PM
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Quote:
Originally Posted by dmpatanis
I was wondering where i must put the CG in the motortrike.
When i put the parachute on it and lift it from the ground the mototrike must be in level -up - or down????
OK, I'll try ...

1 - The chute will have a set of *risers* that will have to connect to a *riser bar*.
That bar has to be of a certain width, in accordance with the requirements that your particular chute/wing/canopy has.

2 - The pick-up points of where the bottom of the riser straps connect to the riser bar, must be just slightly above your engine thrust line.

3 - Now you have the location where they are in one plane.
Next you hang the unit, by holding on to the riser straps, and check that your engine thrust line is approximately 4 - 8 degrees up.

You now have the exact location where to connect the rig to your riser straps.

Next, how do you plan to *steer* the whole contraption ?
Two methods you can look into. Your choice.
1 - use weight shift methodology
(simple, no flaring capability)
2 - use steering lines that pull the trailing edge down.
(a bit more complicated, but you can flare for landing)

If you do not know what these two principles are like,
let me know and I will elaborate.

LBNL, finish the unit as far as you can, completely, no chute yet.
Weigh the unit then determine what size chute you need to carry the contraption.
Once you have determined that, you can then finalise the riser bar configuration.
Do not *overpower* the unit.
The unit will continue to fly forward without power,
but will have a definite sink rate.
All you do with power is to prolong the flight.

In a nutshell.
Adding power will cause the rig to ascend.
Reducing power will cause the rig to descend.
Turning is accomplished by either weight shift or
pulling the trailing edge down on one side or the other.

HTH
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