Popular Post Rawnei Posted August 31, 2022 Popular Post Share Posted August 31, 2022 I want to preface that this is not my design, this was designed by Tim O on telegram (t4obrien on Printables) but he gave me the go ahead to share this on here, all credits go to Tim, check out the link for much more information. https://www.printables.com/model/268351-s22-3po-the-3d-printed-option-kingsong-s22-suspens A Flaw The S22 has a major design deficiency. It has a fancy cantilevered variable swing-arm MTB shock system— but it exerts an offset force on its four linear sliders that allow the wheel to move inside the frame. That offset force, no matter the lubrication, will add tons of friction and make the whole suspension system only useful for absorbing huge hits but only AFTER its been unloaded (like in a jump or a drop). 🤦🏼♂️ The Solution: Bearings! Replacing the sliders with a system where bearings handle the load is the ideal solution— and there's many ways to do that. CNC cut aluminum holders for specialty bearing roller wheels with integrated axles or replaced motor brackets and widened channels. However my analysis and testing shows a carefully designed 3D printed solution is actually better: All force is are supported within 2cm by steel bolts through to the aluminum bracket. Force is held on both sides of the bearings, no just one. Any force beyond what the plastic body can sustain has the system act as a classic friction slider. Same goes for off-axis forces. Put another way: normal bumps: bearings got that. HUGE jump? Sliders got that. No metal that can damage the channel by scraping metal-on-metal Super inexpensive to fabricate, only ~250g of plastic needed Can be made by anyone with a low cost 3D printer or ordered from a local service / friend Configurable design that can accommodate different bearing sizes 8 5 4 Quote Link to comment Share on other sites More sharing options...
kiitick Posted August 31, 2022 Share Posted August 31, 2022 I'm really hoping I can get a friend on here to help me out. My 3d printer won't be able to accommodate this file, as mine is a small resin printer for miniatures. I thought I'd see if anyone was willing to contract their 3d printing skills out to me. I'd be more than happy to pay for the filament and shipping costs. Quote Link to comment Share on other sites More sharing options...
Rawnei Posted August 31, 2022 Author Share Posted August 31, 2022 9 minutes ago, kiitick said: I'm really hoping I can get a friend on here to help me out. My 3d printer won't be able to accommodate this file, as mine is a small resin printer for miniatures. I thought I'd see if anyone was willing to contract their 3d printing skills out to me. I'd be more than happy to pay for the filament and shipping costs. Be aware that material choice is very important here, HR-PLA 3D870 a good choice (it's what I'm going with), it is sturdier and has higher heat resistance than normal PLA (which is not recommended for this application) and is easily available on amazon or other outlets. 1 Quote Link to comment Share on other sites More sharing options...
littlelio Posted September 3, 2022 Share Posted September 3, 2022 great information. I think I will take a test! Quote Link to comment Share on other sites More sharing options...
Popular Post Rawnei Posted September 4, 2022 Author Popular Post Share Posted September 4, 2022 First ride today on these 3D printed sliders, I want to preface that I'm having some issues with my printer currently that I am troubleshooting so big parts like this the tolerances aren't there 100% for me and I had to sand these a bit for them to fit in the channels, so with that I also think that these parts I have now have more friction then I think they should have, I will print new parts eventually when I have my printer under control but this was good enough for now and for testing. Also I only annealed the rollers (annealing makes the HTPLA stronger and more heat resistant) but in the future I will also try to anneal the main parts, I bought sand today specifically to be able to do this without too much deformation and test how that works on bigger more complex parts. So with that said, still a bit of friction due to above problems with my printer but it was still a clear upgrade from my previous stock+PTFE+dirt protecting variant, you can definitely feel the difference specially on technical off-road, nice upgrade even if I need to perfect my printing results. 3 1 Quote Link to comment Share on other sites More sharing options...
Popular Post Rawnei Posted September 5, 2022 Author Popular Post Share Posted September 5, 2022 Second long ride today with a bunch of off-road out in the forest, rocks and roots, super fun, the suspension is finally working as intended. 😂 And everything you see that you can jump or bonk along your path you will jump or bonk! 4 Quote Link to comment Share on other sites More sharing options...
MetricUSA Posted September 5, 2022 Share Posted September 5, 2022 Video PLEASE Quote Link to comment Share on other sites More sharing options...
Rawnei Posted September 6, 2022 Author Share Posted September 6, 2022 5 hours ago, MetricUSA said: Video PLEASE Not me but same print: https://www.facebook.com/groups/1876404869187267/permalink/2154584598035958/ 1 Quote Link to comment Share on other sites More sharing options...
MetricUSA Posted September 30, 2022 Share Posted September 30, 2022 (edited) Now only if kingsong will step up and provide all of us with a factory version!!! Absolutely no reason not to be more professional about the crappy design.... Hell why would this not work for the wheel??? A drawer slides... https://www.amazon.com/dp/B09HXKNL3Y Edited October 6, 2022 by MetricUSA Quote Link to comment Share on other sites More sharing options...
DANBOY123 Posted October 6, 2022 Share Posted October 6, 2022 Any of you 3d printer guys making these things for sale? I don't use a 3d printer, and quite frankly am not interested in that. I am, however, interested in buying the parts and assembling. 1 Quote Link to comment Share on other sites More sharing options...
Rawnei Posted October 7, 2022 Author Share Posted October 7, 2022 10 hours ago, DANBOY123 said: Any of you 3d printer guys making these things for sale? I don't use a 3d printer, and quite frankly am not interested in that. I am, however, interested in buying the parts and assembling. From what I hear they might be for sale soonish from a popular outlet and endorsed by it's creator, patience. 1 1 Quote Link to comment Share on other sites More sharing options...
Baychef Posted October 9, 2022 Share Posted October 9, 2022 What size bearings are you guys using for these? 1 Quote Link to comment Share on other sites More sharing options...
MetricUSA Posted October 12, 2022 Share Posted October 12, 2022 23 mm rollers https://www.amazon.com/gp/aw/d/B0727N1WSB I don't know why you need a t shape base in the 3d print the rollers will keep it in the channel but you do need these bearings for side wear.... Nylon https://www.amazon.com/gp/aw/d/B07VGGVXMH Metal https://www.amazon.com/gp/aw/d/B081QKS4S2 Quote Link to comment Share on other sites More sharing options...
Rawnei Posted October 12, 2022 Author Share Posted October 12, 2022 On 10/9/2022 at 5:41 AM, Baychef said: What size bearings are you guys using for these? 8x14x4mm 1 Quote Link to comment Share on other sites More sharing options...
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