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Vq250 xtended frame project
.....not much to say , just another flying object !!!
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Last edited by Thunder50BMG; Aug 19, 2018 at 02:56 PM.
Reason: THUNDER
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Sorry ThunderBMG!
Open space fast forward flying will take a while. The motor mounts do not resist the vibrations so I have to analyze the broken parts and design new ones...
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Quote:
This is the part that makes me very uncomfortable using 3D printed parts when there is a percentage that it will quit anytime. Are you considering using aluminum parts ? Looking forward seeing your new design on that broken parts. Surely, it's an easy fix for you mate ! |
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Last edited by Thunder50BMG; Aug 18, 2018 at 02:48 PM.
Reason: THUNDER
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Quote:
This spring the now two-year old partly 3D printed quad got into the habit of self-destructing. I had all parts printed in PETG. Last year it performed well. This spring I did a test-hover in my backyard and one motor mount just desintegrated. At inspection it seemed that there was a split between layers. Replaced the part, went to the field and after half a minute of flight it another motor mount just came apart, shattering the model. Maybe I printed the PETG on too low a temperature. Maybe PETG is over time prone to delamination. Maybe there are other types of filaments to use? I usually print on 0.2 mm layer height. Is there someone who knows what to do better? |
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Last edited by Hermani; Aug 18, 2018 at 02:27 PM.
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I still remember that quad mate ! Pretty unique and customized design but, I did not know it was getting into the habit of self -destructing too. There should be a better way , 3D printing technology have flown to the roof lately and better filaments should be address for better parts performance. Did you you remember my BOOMPROP TRICOPTER ? I have that 3D printed parts printed with 100% in-fill and I did not have any issue with it. |
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Last edited by Thunder50BMG; Aug 18, 2018 at 05:56 PM.
Reason: THUNDER
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For my RC projects I always printed with 30% infill so I guess that might have been part of the problem. What filament do you use these days? |
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Latest blog entry: WoodQuad
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For now I will just print an enfoced variant of the basically same motor mounts but for the (near) future I will have to look for a milling service. A clever design would make use of ready made parts and keep custom parts as few and simple as possible... I guess I have to go to the restroom to get a clear head... flush all the complicated thoughts away and return with something simple... Quote:
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I've not tried PET-G yet but PLA can be improved for strength by annealing in simmering hot water for 20-30 minutes., any parts I do this to are 100% infill with 110% filament flow.
PLA breaks down after 3-4 years so not suited for long term high strength projects. |
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Found this link: http://justinmklam.com/posts/2017/06/sous-vide-pla/ |
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Latest blog entry: WoodQuad
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Tail fixed, one rotor blade needed a little bit of rework. Electric stuff, shafts and pitch mechanics survived without damage. Now waiting for new motor mounts.
. |
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Thanks mate but, I am not qualified to talk about 3D printers and Filaments. From the very start when 3D printers were born, I already keep my distance for I am not into using 3D printed parts but, I totally like and amazed on the idea. The Boomprop 3D printed parts on my project was printed by someone with the instructions to have 100% in-fill. I will be watching your latest build/project here. Please update us if you don't mind. |
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Now slowly increasing head speed...
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