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OpenWheel - open source printed flywheels of hydrostatic geometry fami


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#1 TantumBull

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Posted 29 May 2018 - 06:38 PM

cad wheel.png       real wheel.jpg

 

Exhaustive write-up and documentation:

Attached File  OpenWheel.pdf   1.44MB   85 downloads

 

Thingiverse Link

Copy and pasted from the introduction of above document:

Here I present OpenWheel – my efforts at lowering barriers of entry into the world of high performance flywheels on standard (non-Eclipse) OFP cages. That means working with DC brushed motors, and a 2mm shaft. This project was originally motivated by cost, but through my experimentation I quickly found that I could also get superior performance to commercially available machined wheels.


The results, for those who are as impatient as me: 150 fps through a Morpheus guide on OG Fangs.

Everything is in the document. I can't stand the formatting in forums and uploading each figure individually, otherwise it would be here as well.


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#2 jaxmeh

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Posted 29 May 2018 - 09:33 PM

I wonder if machined aluminium cages might help on the vibration front. I'd be curious to see if a Worker or Artifact cage would fit these wheels.
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#3 TantumBull

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Posted 29 May 2018 - 09:55 PM

I wonder if machined aluminium cages might help on the vibration front. I'd be curious to see if a Worker or Artifact cage would fit these wheels.

 

That's certainly possible. Might have different constrains on the minimum inner rim diameter but I'm sure that could be worked around.


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#4 Draconis

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Posted 08 June 2018 - 07:44 PM

This is awesome.  I'll totally be trying these out.


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[15:51] <+Noodle> titties
[15:51] <+Rhadamanthys> titties
[15:51] <+jakejagan> titties
[15:51] <+Lucian> boobs
[15:51] <+Gears> titties
[15:51] <@Draconis> Titties.
[15:52] <+Noodle> why is this so hard?

#5 Jyang

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Posted 16 June 2018 - 04:59 PM

Documentation is really thorough, which I always appreciate very much in this hobby.

 

The idea of having a tool for centering is really clever, I definitely struggled with that the last time I attempted to print flywheels (ultimately a failure on my part).

 

Want to ask, though, have you considered using the following geometry (left being current openwheel, right being the alternative) to improve the top surface finish? I would've considered tested it out on my own, but I figured it'd likely be something you've already considered.

 

https://imgur.com/a/73CpTQK

 

I've brought up the topic with you previously, but with the noise that they're currently producing, would you be happy with running the wheels as they are on a long-term basis, or is it still too loud?


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#6 Meaker VI

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Posted 17 June 2018 - 09:16 AM

Want to ask, though, have you considered using the following geometry (left being current openwheel, right being the alternative) to improve the top surface finish? I would've considered tested it out on my own, but I figured it'd likely be something you've already considered.

 

https://imgur.com/a/73CpTQK

 

I've brought up the topic with you previously, but with the noise that they're currently producing, would you be happy with running the wheels as they are on a long-term basis, or is it still too loud?

 

I'd brought it up with him a few times in messages. I don't think it was ever tested though because he'd gotten these working.


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