<VV> My new experimental fan

mark at noakes.com mark at noakes.com
Sun Nov 12 19:04:36 EST 2017


Send the stl file to my work addr; you should already have that. I'll 
see if we have a mechanism in place that could print it for you in metal 
that won't cost a fortune. No promises but will give it a try.


On 11/12/17 3:12 PM, kevin nash via VirtualVairs wrote:
> Message: 1
> Date: Sat, 11 Nov 2017 16:52:33 -0500
> From: jvhroberts <jvhroberts at aol.com>
> To: kevin nash via VirtualVairs <virtualvairs at corvair.org>,
>          virtualvairs at corvair.org, Hugo Miller <Hugo at aruncoaches.co.uk>
> Subject: Re: <VV> My new experimental fan
> Message-ID: <mailman.1923.1510437180.1916.virtualvairs at corvair.org>
> Content-Type: text/plain; charset=utf-8
> Nicely?done!
> Thanks John!!
> Kevin Nash
> Message: 3
> Date: Sat, 11 Nov 2017 16:14:49 -0800
> From: Jay Maechtlen <jaysplace at laserpubs.com>
> To: virtualvairs at corvair.org
> Subject: Re: <VV> My new experimental fan
> Message-ID: <3e689637-bba8-7cf4-c975-d58d0e66ddff at laserpubs.com>
> Content-Type: text/plain; charset=windows-1252; format=flowed
> Well- if printed in a plastic, I suspect it would need thicker sections
> for mechanical strength.
> After all, it is not just going around, it is pushing lots of air!
> And the accel/decel of the fan (rapid change of rotational velocity)
> might put some interesting stresses on it.
> But the curve of the blades may make it very strong against change of
> rotational speed.
> Jay- You got that right!! There's a lot of work left to do if this fan ends up made from
> a non-metal... tip flutter is a serious real concern unless compensated for by thicker
> sections. I may end up having to make it thicker anyways for printing purposes.

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