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Old 04-11-2009, 04:07 PM   #1
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Hair Brain

OK guys I have my new SMB penthouse w manual (human) lift. It is a big son of a gun on an extended Chev. Pushes up a little harder then the short wheel base sample we tested at SMB-I. Soooooooooooooo I got thinking. My penthouse top is say ..... 50" wide by about 120" long.....that translates into about 6,000 square inches of surface area. So I close the doors tight, set my vehicle ventilation system to outside air and set the blower to high. The sides of the raised penthouse bulge out! Not sure what it takes to manually (human...me) lift the penthouse roof ... maybe 50-75 lbls?? Well with 6,000 square inches of roof area all I need is to pressurize the inside of the van to 0.01 to 0.02 psi and the roof will go up. If not by itself at least a lot easier. Guess what, IT DOES GO UP EASIER!! So the heck with opening the doors before raising the roof. I am going to leave the engine running, close everything up, set the blower to outside air and turn it on high. Then raise the roof.

Those w manual roofs .... try it both ways.
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Old 04-11-2009, 05:10 PM   #2
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Re: Hair Brain

Cool! So, did it make a difference in the lifting?
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Old 04-11-2009, 05:19 PM   #3
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Re: Hair Brain

Wow! Talk about raising the roof!
Pretty nice.

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Old 04-11-2009, 05:24 PM   #4
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Re: Hair Brain

Yes it worked. It didn't raise the roof but it did take a noticeable load off my back. Would like to figure out how to stand on a bathroom scale while bent over like a pretzel and measure the effect. My wife could read the scale..... Not really she would be laughing and taking pictures with the camera.
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