Goliath short duct attempt #1

The Goliath short is a challenge to make duct for! Thought I would give it a try and see how it looks.
Not bad, but needs a better nozzle loft to better direct the air. Nozzle coolers seem to be working well. What's the tradeoff to real printing?

[@petermeier3153]

Looks very good, will surely outperform the stock vzbot duct by a lot.

[@PascalVos]

hello love your youtube channel very cool that you try some new stuff not many people done or have tried .
question i also have a goliath but a vzbot i would love to try this duct on it with my cpap setup.
would you be open to share your latest revision?

[@PascalVos]

ah i found it in de mod section thank you Kevin!

[@BigfootPrinting]

Do you have a machining or engineering background? This thing gets more wicked by the week. Great work

[@MrRocksalt]

Yes and yes. TY

[@occasionalriders1885]

do you think this "valve duct" is also good with a 6028 radial fan? or is better with cpap due to cfm?

[@MrRocksalt]

Short answer, no. I have some other videos that were before valve duct, using 4028 axial fan. The design of the duct is much changed for axial. They are low pressure, high volume.So they have need a very large opening from the fan and as close to the hot end as possible. Using such a fan in place of CPAP won't work. Not enough pressure to push through the hose. th-cam.com/video/ZVrFbl4tBrE/w-d-xo.html

[@occasionalriders1885]

@@MrRocksalt thank you very much
And what a out the "new" 100k rpm blower? Are there some news?

[@MrRocksalt]

I didn't see radial, but the same answer. This duct needs about 20 grams force at 100% to work right. You can try and make one, but you will have to play with sizes to get the right velocity.

[@occasionalriders1885]

@@MrRocksalt no no, I think there was a misunderstanding, I understood what you meant about radiale fan and duct...
It's a separate question, now I was asking about the new cooling system you are using in the latest videos you posted

[@MrRocksalt]

@@occasionalriders1885 I am using CPAP again. The 100K RPM fan has too much low speed velocity. I need to run 1-2% cooling for ABS and the window is too narrow. Working on a solution.. Motor does not spin slow enough/need hall sensors. PLA OK, but not much more, yet.