The 16 inch microphone gooseneck is fine for standing the 24v Papst fan straight up, or nearly so, and hanging it, but not to support its weight sideways. That length does seem a bit unwieldy too, so some shorter goose necks are bookmarked.
I've yet to do anything more to it, other than simply use it, at this point.
My new acrylic fan shroud is coming along, clear Acrylic hinges, and 4 cutouts around the openings on each of the JARO fan's hub supports. The Jigsaw blade was set on a 97 degree angle, instead of 90, for less restriction to air flow whether on high or low pressure side. It still has the protective paper on it. It is smoked plexiglass/ cast acrylic 1/4 inch thick.
The rearward fan, I intend to have blowing inwards and down on Fiona's perch through the rotatable grille, and those center supports will cause restriction and more fan noise on the suction side, but I/she might not like this fan blowing inwards, and I could instead put both of them as exhaust, like my current plywood shroud with its 105 cfm 'stinger' fans.
I've also found a way to use my digital scale that I use for precisely mixing epoxy, to perhaps balance the fan's impellers so they do not vibrate badly at 10.12 + volts & ~2600+ rpm. The imprecise hypothesis testing method revealed more than 0.5 grams difference from the heaviest side to the lightest side of the impeller. I should be able to get solid improvements in this regard lightening the heaviest side.
I do not expect to often run these fans at such a rpm anyway, but better to have too much power with a throttle, than too little, especially as these seem quite efficient at lower speeds. Pretty sure when I dial the Jaro's down to draw the same amperage as the 'stinger' fans at their max speed, they will move more air and make less noise, but that is a guess, not a side by side comparison, but the latter will occur, it just hasn't yet.
The stingers are currently both controlled by a single LM2596 3 amp voltage bucker, which is not as efficient as the newer 5 amp XL4015 chip of my newer model buckers, and each Jaro fan will have its own speed control.
I've yet to do anything more to it, other than simply use it, at this point.
My new acrylic fan shroud is coming along, clear Acrylic hinges, and 4 cutouts around the openings on each of the JARO fan's hub supports. The Jigsaw blade was set on a 97 degree angle, instead of 90, for less restriction to air flow whether on high or low pressure side. It still has the protective paper on it. It is smoked plexiglass/ cast acrylic 1/4 inch thick.
The rearward fan, I intend to have blowing inwards and down on Fiona's perch through the rotatable grille, and those center supports will cause restriction and more fan noise on the suction side, but I/she might not like this fan blowing inwards, and I could instead put both of them as exhaust, like my current plywood shroud with its 105 cfm 'stinger' fans.
I've also found a way to use my digital scale that I use for precisely mixing epoxy, to perhaps balance the fan's impellers so they do not vibrate badly at 10.12 + volts & ~2600+ rpm. The imprecise hypothesis testing method revealed more than 0.5 grams difference from the heaviest side to the lightest side of the impeller. I should be able to get solid improvements in this regard lightening the heaviest side.
I do not expect to often run these fans at such a rpm anyway, but better to have too much power with a throttle, than too little, especially as these seem quite efficient at lower speeds. Pretty sure when I dial the Jaro's down to draw the same amperage as the 'stinger' fans at their max speed, they will move more air and make less noise, but that is a guess, not a side by side comparison, but the latter will occur, it just hasn't yet.
The stingers are currently both controlled by a single LM2596 3 amp voltage bucker, which is not as efficient as the newer 5 amp XL4015 chip of my newer model buckers, and each Jaro fan will have its own speed control.
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