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Old Aug 09, 2014, 07:58 PM
skumgummi dave
Gresham, OR.
Joined Mar 2004
2,020 Posts
Sure would enjoy knowing where to just buy the connectors. Have only found kits with plastic rods and connectors.

Dave-
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Old Aug 09, 2014, 08:12 PM
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Joined May 2010
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Dave,

Do a Google search for "molecular model kit." I find looking under images to be very helpful. Look here.

The buckyball is called in organic chemistry a "C-60" molecule, so after you find a particular supplier of your choice, put c-60 into the search box of the supplier and out will pop the model you requested.

Look here for the one I did for you.

You can adjust the diameter of the sphere by increasing the lengths of the interconnecting tubing or rods depending upon whether you choose to use rod or nylon tubing, i.e male or female connectors.
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Old Aug 09, 2014, 08:32 PM
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How to.... instructions "Making a Buckyball":

Making a C60, Bucky Ball, Buckminsterfullerene model
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Old Aug 09, 2014, 09:18 PM
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Buckytube:

How about a Buckytube: for the "quad in a cage" idea.
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Old Aug 09, 2014, 09:22 PM
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Buckyball closeup shot:

You can see the lengths of nylon tubing used with the inter connectors. It all looks too heavy. I've not found the female connectors yet.

You may need to send an email to the builders of the Gimball and ask about those connectors. If you read the article I linked to, you will find some info that will point you to the inventor. It may take a bit of leg work. It appears that these parts must be of foreign design. Perhaps they custom built them, but I'm sure I've seen female connectors in the Chemistry Dept on the campus where I use to teach. I did not teach chemistry, but they had some nice display cases in the hallway. I now live a great distance from that school.

Click image to enlarge for detailed viewing.
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Last edited by corocopter; Aug 09, 2014 at 09:49 PM.
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Old Aug 11, 2014, 02:51 AM
skumgummi dave
Gresham, OR.
Joined Mar 2004
2,020 Posts
corocopter:

Thank you Sir for all the good info. You are correct. Looks like the parts are made in China. Reminded me of the D-Link set I had as a kid.

Dave-
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Old Feb 27, 2015, 05:26 AM
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philgib's Avatar
Joined Oct 2005
651 Posts
Hello guys,

I am building a half sphere ans 4 servos. I attached it to a thread pinned on the ceiling to test yaw and understand how I could control it efficiently.

I have an old futaba 6ex , 6 channels. How could I do the adequate mixing to have the 4 spoilers to'move in the same direction for yaw ?

For the moment I have elevons on 2 separate spoilers for pitch and yaw and roll on the 2 other spoilers attached together. Yaw trimming is HUGE, with spoilers at 60 degrees from south...
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Last edited by philgib; Feb 27, 2015 at 07:38 AM.
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Old Feb 27, 2015, 04:30 PM
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Ran D. St. Clair's Avatar
United States, CA, Sunnyvale
Joined Dec 2006
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Quote:
Originally Posted by philgib View Post
Hello guys,

I am building a half sphere ans 4 servos. I attached it to a thread pinned on the ceiling to test yaw and understand how I could control it efficiently.

I have an old futaba 6ex , 6 channels. How could I do the adequate mixing to have the 4 spoilers to'move in the same direction for yaw ?

For the moment I have elevons on 2 separate spoilers for pitch and yaw and roll on the 2 other spoilers attached together. Yaw trimming is HUGE, with spoilers at 60 degrees from south...
I assume that this is not something that can be done in your TX, or any TX. All of the various control surfaces need active feedback from the gyros. This is less true for yaw than for pitch and roll, but still... The answer is that you need to do all the necessary mixing in a Flight Controller, which means your TX will be outputting simple elevator/pitch, ailerons/roll, rudder/yaw, and throttle. Pretty much any TX can do that. So now all you need is a Flight Controller. There are several good ones out there, and the best one for most people is the one they already know and are most comfortable with. I am partial to the KK2 running the OpenAero-VTOL firmware for that very reason. You may have one you prefer, but whatever you choose it needs to be able to drive servos as well as motors. I think most can, but I am not able to speak to anything other than the OpenAero-VTOL firmware which definitely can.
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Old Feb 28, 2015, 09:28 AM
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gittarpikk's Avatar
United States, TN, Maryville
Joined Jun 2008
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Quote:
Originally Posted by Ran D. St. Clair View Post
I assume that this is not something that can be done in your TX, or any TX. All of the various control surfaces need active feedback from the gyros. This is less true for yaw than for pitch and roll, but still... The answer is that you need to do all the necessary mixing in a Flight Controller, which means your TX will be outputting simple elevator/pitch, ailerons/roll, rudder/yaw, and throttle. Pretty much any TX can do that. So now all you need is a Flight Controller. There are several good ones out there, and the best one for most people is the one they already know and are most comfortable with. I am partial to the KK2 running the OpenAero-VTOL firmware for that very reason. You may have one you prefer, but whatever you choose it needs to be able to drive servos as well as motors. I think most can, but I am not able to speak to anything other than the OpenAero-VTOL firmware which definitely can.
Little history...

The thread entitled 'Sidewinder missle' has some good mixes in it...and I changed it a tad and dubbed it the 'CrazyBall" mix as well..

Cant speak for the '6ex' but the 6XAs can doit somewhat but will either be able to deflect all four for roll ...or deflect the upper and lower rudder as one...but not both

Best I was able to figure (for the CrazyBall) was rate switch for elev was on low position allowing all four vanes to be used for roll but only top rudder vane was used in rudder control....setting elev rate to high made both rudders work in unison...but... in roll , the bottom rudder vane did not deflect

This had something to do with the way the flap mix interfered...

maybe someone found out different....if so , please let us know how..

I will add that the Hyper Taxi has a working mix exactly as you need...but the servos are small.

perhaps you could get one of those (with its transmitter) and change out the servos and somehow increase the current ability of the receiver to achieve the current you need.

The HyperTaxi already has a good AX3 2 axis gyro built in and works well...but not sure if a larger set of servos will be fast enough to effect the control you need as they will probably be a tad slower.

Hope this helps
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