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96 Blazer-- 2 18's budget build
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<blockquote data-quote="PSturmer" data-source="post: 8123875" data-attributes="member: 568966"><p>The entire bracket to hold the jack was removed to provide more room for the box. Carpet was also added. The exposed metal shown below will be covered by the box.</p><p></p><p><img src="http://i24.photobucket.com/albums/c8/psturmer/2%2018s%20for%20Ted/DSC02162_zps6268c895.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Today we also experimented with different paints to use on the flared ports. Since this is the internal set of flares, anything we do to will not be seen from the outside. Red seemed to turn out the best.</p><p></p><p><img src="http://i24.photobucket.com/albums/c8/psturmer/2%2018s%20for%20Ted/DSC02161_zps10f6b4b0.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>The box will take up the entire width. Cardboard was used to create a template.</p><p></p><p><img src="http://i24.photobucket.com/albums/c8/psturmer/2%2018s%20for%20Ted/DSC02159_zps0dce9382.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Work was done on the box design. Shown is a side view, with the left being towards the rear of the vehicle. The calculated volume is approximately 12.3 ft^3 before port displacement. Once sub displacement is known, a more refined calculation of the volume will be done, which is needed to calculate the port length.</p><p></p><p><img src="http://i24.photobucket.com/albums/c8/psturmer/2%2018s%20for%20Ted/DSC02166_zpse70f1c86.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>The reason for the 45 degree slant of the back of the box is to reduce turbulent flow. Since sudden changes in area are a source for turbulent flow (and energy is lost in turbulent flow), the slant works by gradually changing the area. This is only a theory. One that makes complete sense after taking fluid dynamics, but has yet to be tested in this application.</p><p></p><p><img src="http://i24.photobucket.com/albums/c8/psturmer/2%2018s%20for%20Ted/boxdesignmethodology_zps6758cab9.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="PSturmer, post: 8123875, member: 568966"] The entire bracket to hold the jack was removed to provide more room for the box. Carpet was also added. The exposed metal shown below will be covered by the box. [IMG]http://i24.photobucket.com/albums/c8/psturmer/2%2018s%20for%20Ted/DSC02162_zps6268c895.jpg[/IMG] Today we also experimented with different paints to use on the flared ports. Since this is the internal set of flares, anything we do to will not be seen from the outside. Red seemed to turn out the best. [IMG]http://i24.photobucket.com/albums/c8/psturmer/2%2018s%20for%20Ted/DSC02161_zps10f6b4b0.jpg[/IMG] The box will take up the entire width. Cardboard was used to create a template. [IMG]http://i24.photobucket.com/albums/c8/psturmer/2%2018s%20for%20Ted/DSC02159_zps0dce9382.jpg[/IMG] Work was done on the box design. Shown is a side view, with the left being towards the rear of the vehicle. The calculated volume is approximately 12.3 ft^3 before port displacement. Once sub displacement is known, a more refined calculation of the volume will be done, which is needed to calculate the port length. [IMG]http://i24.photobucket.com/albums/c8/psturmer/2%2018s%20for%20Ted/DSC02166_zpse70f1c86.jpg[/IMG] The reason for the 45 degree slant of the back of the box is to reduce turbulent flow. Since sudden changes in area are a source for turbulent flow (and energy is lost in turbulent flow), the slant works by gradually changing the area. This is only a theory. One that makes complete sense after taking fluid dynamics, but has yet to be tested in this application. [IMG]http://i24.photobucket.com/albums/c8/psturmer/2%2018s%20for%20Ted/boxdesignmethodology_zps6758cab9.png[/IMG] [/QUOTE]
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