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Never inquired about it with George. My guess is it had as much
to do with the overall design as anything else. He used dog-ears
at the open end to hold the motor which required a certain amount
of material to support the 1/4 inch attachment bolts. I suspect
the can size was based upon convenience.<br>
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On 10/9/2013 8:48 PM, Joe Perkel wrote:<br>
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<div id="yiv5016048131yui_3_7_2_26_1381355267750_35">I am
trying to understand George's design intent reference
his 1 ATM SCH40 pipe housings and cooling.</div>
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<div>Where #8 SCH40 O.D. being 8.625" and your typical 2-3
HP DC enclosed fan cooled motor being roughly 6", was it
his intent to have this airspace between the motor and
inner wall for air circulation, or is this space simply
incidental?</div>
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<div>I am wondering if these housings can be slimmed down
to a more snug or custom fit with a reliance on
conduction for cooling? Perhaps even filling the 1 ATM
housing with non-compensated oil for the sole purpose of
efficient conduction?</div>
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<div>I am also noting that the bow thruster industry likes
to get the motor out of the props way with a 90 degree
drive arrangement. This has interesting implications
for potentially more efficient and downsized lateral
thrusters.</div>
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<div>Some musings.</div>
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<div>Joe</div>
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