Hey everyone, it always bothered me when my Quad hit the ground hard, so I started looking on a way to add a suspension to it and after 2 weeks of trying, this is what I came up with:

I got some shock absorbing from a 1/10 scale buggy and added wheels, one on each side of each leg with a total of 8, they are very light (used on some airplanes like Apprentice etc). Had to 3D print some parts to hold the shocks on the Arm, I also printed the Sonar support. I am very happy with the result of the suspension. To test it I cut the power off at about 2 feet high and it hit the ground but it doesn't bounce at all (the shocks absorb all the impact). I'm very satisfied with the results, and I just wanted to share.

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Comment by John Church on April 15, 2012 at 6:38pm

Hey everyone, it always bothered me when my Quad hit the ground hard

 

Heh-heh. My co-hobbyists call these "Navy landings"... I'm a pro at them.  ;)

Very nice solution! Very rugged.

Comment by Ellison Chan on April 15, 2012 at 6:45pm

Nice.  Love to see some video of it in action.


3D Robotics
Comment by Chris Anderson on April 15, 2012 at 7:18pm

Cool! How much weight do they add?

Comment by Luiz Miranda on April 15, 2012 at 7:38pm

they only added 100 grams

Comment by SKYracer on April 15, 2012 at 8:35pm

Luis, me puedes dar las dimensiones de tu quad?. que helices estás usando? Tengo unos motores idénticos y quiero aprovechar tu experiencia

Comment by SKYracer on April 15, 2012 at 8:38pm
Luis, can you give me the dimensions of your quad?. what props are you using? I have some identical motors and want to take your experience. Thanks
Comment by John Hestness on April 15, 2012 at 8:47pm

I like your design a lot.  Did you find some light weight shocks?  Or modify them for lightness?  How expensive was everything?  What is the size and weight of your quad?  I think somebody could sell a kit like this. 

 

The picture is of a crazy large prototype nose gear I built also using 1/10 scale shock (from a slash) it was going to go on a large drone.

Comment by Luiz Miranda on April 16, 2012 at 5:48am

Hi skyracer, my Quad is the 3DR bought the kit here at DIY Store, as far as dimension I measured 24" from center of the motors on diagonal, I have project that I downloaded, if you want it I can email to you. For my props, I use the 12x4.5 made in Germany, found it to be much better and more resistant also, I buy them from this website (http://www.innov8tivedesigns.com/product_info.php?products_id=994)

Comment by Luiz Miranda on April 16, 2012 at 6:07am

John, I used a stock shock (19g each) , the wheels are only 3g each, as far as price, I spent about $50.00 because I had to buy 4 rear (Apprentice) suspension to get the wheels etc, If we can find the source to buy just the wheels I am sure it would be lot cheaper. I did not weight the entire Quad, but the suspension only added about 100-120grams.

Like your design too, looks really good

Comment by Ellison Chan on April 16, 2012 at 8:29am

I think the 100 grams is a little too high., though It's almost the weight of a GoPro camera.

Maybe you should use wheels made specifically for aircraft, like this:

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