The standard a bearing FD ships out with the stems is unresponsive. It’s weird but fun.
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I have an a bearing stem and tried it out but the response was a little lacking, I think because the gap was wider than the slim c.
If I recess the bearing seat a little more I think the a bearing would pop off.
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Yeah I replaced the a bearing they sent with a greasy cheapo bearing.
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True. I got slim a bearings and shims but your right not the default setup
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I think I want to try to find a heavy dense filament like maybe an iron or copper filled and print a micro yoyo for the a bearing steam system. Need to research filaments a little more.
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Neat idea. I found with wood filled pla it was lighter but also made an absolutely mess of my hotend. More abrasive additives I imagine would tear up the nozzle pretty easily.
I have a drawer filled with cht nozzles and nozzle x’s. Should in theory be able to handle some really abrasive stuff. Fingers crossed.
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This is really cool!!
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Thanks! That means a lot coming from you since it’s my obsession with your and Glens yo-yos that drove this haha.
I’ve actually been trying to 3d print an RBC for months when I couldn’t find one for sale. Unseen are dozens of failed prototypes that used side effects, fixed axles, and the mod44 system.
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yoo that looks smooth
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Can we get gap picture? I want to see how far the inner half of the stem protrudes.
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Sure! Here is the gap from far off and an uncomfortable close up. I added a recess for the bearing seat to sit in, which protrudes maybe 1-2 mm.
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Bonus shot because I’m pretty proud of this one. It’s 55 mm diameter like the original BUT it’s also within .1 grams of the weight posted on mk1.
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Looks great. Did you use a sacrificial bridge to print the recess?
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I used Prusa slicer’s auto generated grid supports and then poked a screwdriver through the axle hole to pop out the support.
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We are all plagiarists on this blessed day. Looks great! Fixed axle?
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No! I had a spare bearing kit so I threw a half-spec in and it plays like a dream. I tried a half spec in the FD Stem kit I have but I didn’t like the response.
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Nice that’s clean looking
I love the idea that mark is taking too long to drop the plasm so folks are like. “Fine I’ll make my own”
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