Hand Drive Wheelchair Attachment (non-geared)

by Hand_Drive_Wheelchair, published

Hand Drive Wheelchair Attachment (non-geared) by Hand_Drive_Wheelchair Jul 6, 2017


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1488Views 276Downloads Found in Engineering


We were given the challenge to hack a wheelchair and make it better. Through research, we discovered that lever-powered wheelchairs were proven to be a better physical motion for the user. We also discovered how expensive they were—anywhere from $2,000-$10,000.

Instead of redesigning the wheelchair, we came up with the idea of a Hand Drive wheelchair attachment that could make lever-powered wheelchairs more accessible to everyday users. Our attachment is almost entirely 3D printable, it’s completely open source, and costs only $40 to make, which is less than 1% of the cost of its competitors on the market.

The Hand Drive wheelchair attachment can be attached to any wheelchair and allows it to be powered in a rowing motion. This motion is better for your back, as it uses bigger muscle groups, and it keeps your hands cleaner. Because of our price point and the adaptability of the Hand Drive, all wheelchair users now have access to a lever-powered wheelchair.

How I Designed This

Hand Drive Homepage and Build Instructions

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Can you use two, one on each wheel? Do you have the CAD files so I can change for my 3 spoke wheels. Cheers!

this will change my life thankyou

What size print bed is required to print these objects?

Thing of the week... No... Thing of the Month... No Thing of the YEAR!
Thankfully I saved my sons previous chair so we'll be able to try this without using the current chair.
Totally awesome.

So I looked through all the instructions and the parts. Nowhere is it explained how the completed thing attaches to the wheel. I do see there are nine slots in the spider part and there are 9 spokes on the wheels of the chairs in the pics. So... I have to assume this will only work on a chair with the 9 spoke wheels. Too bad. But even if the chairs we have were 9 spoke I do not see how to attach this to the wheel securely.

Thank you! We hope you and your son enjoy the Hand Drive! We would love if you could share some pictures of your Hand Drive so we can put them on our site! Enjoy :)

I was thinking of remixing for use on wheels with thin metal spokes. I could do it to the mesh using 3D-Coat, but I'd rather do it in CAD. Could you please post the CAD files?

If you do remix this for use with thin metal spokes, could you pop me a message. My lads wheelchair has the wrong wheels. :(

I just wanted to say that this is an excellent project and congratulate the team who built this. You're doing good in the world.