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Old 04-27-2006, 08:02 AM   #21
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Quote:
Originally Posted by Augster59
Hello, i'm Augie in Salt Lake City. all new to this forum and been listening in{well reading anyway}on this is very interesting subject. I was thinking of a spoiler under the front bumper would help? something like the old locomotives used! Well just a thought, and this site has been so very helpful to me on ideas to my up-comeing work on my school bus...
Thanks to you all.
I was thinking the same thing add something to the bottom of the bumper, both my 87 chevy pickup and my 90 Suburban have them mounted below the bumper they are plastic and wrap around the sides.
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Old 02-02-2007, 05:18 PM   #22
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Quote:
Originally Posted by Augster59
Hello, i'm Augie in Salt Lake City. all new to this forum and been listening in{well reading anyway}on this is very interesting subject. I was thinking of a spoiler under the front bumper would help? something like the old locomotives used! Well just a thought, and this site has been so very helpful to me on ideas to my up-comeing work on my school bus...
Thanks to you all.
That spoiler they tacked on the front of old steam locomotives....Yes, it was made to deflect stuff, like cows. I am fairly certain that they hadn't invented drag coefficient yet.
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Old 02-02-2007, 05:27 PM   #23
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Re: Aerodynamic Drag Losses for Cars vs. Brick Walls

Quote:
Originally Posted by Eric von Kleist
I have considered under belly skins, but one problem that I forsee with them is moisture accumulation (and road gunk). Sidewalls would keep air from going under the bus, but would not accumulate any moisture.
Actually, I was thinking that a smooth belly pan would actually preserve the underside atleast on a pusher where you could extend the skin all the way up to the front of the bus.

I would construct it by laying 3/4 plywood across between the frame rails. This way you could make that considerable area a storage basement that was accessible from inside the bus. It should also provide sound and temp insulation. I would then skin over the plywood with sheet metal and paint the hell out of it.

Is there any decent bus underside pics/drawings anywhere on the board?
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Old 02-02-2007, 09:53 PM   #24
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you're not going to be able to make it very air tight I don't think just due to the flexing of the body and stuff so it might be best to allow it to have some airflow. The frame on my truck, for instance, is fully boxed and even has a diagonal gusset internally in the front ( so it kinda looks like this [\] if you cut it open) but even the frame has actual breather holes.

I would be left wondering if the decrease in drag wouldn't just be offset by the weight. I think a good front air dam, some side skirts, and maybe one of those spoilers for the rear (which also helps keep the rear windows clean) would probably give you the same benefits and would be a lot easier. The side skirts would even help cover those unsightly battery compartments and water tanks that inevitably hang lower than the stock skirt.
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Old 02-03-2007, 11:05 AM   #25
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lowered sides

Here is a phot of a bus that has had the skirt lowered.

http://www.skoolie.net/gallery2/v/Skooli ... 1.jpg.html

-Richard
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Old 02-06-2007, 10:09 PM   #26
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Instead of a spoiler, how about rounding off the rear end? I think that would work better (could be wrong). If you could just round off the rear end until it was half as wide as the end of the bus, you could probably get another 10%+ on mileage.

This was my original plan with the Jeep, but I never got around to building the rear end. If you look at some of those car hauling semis on the road, the ones with the fabric sides, you will see a fiberglass cap on the rear end that helps to streamline the vehicle. This is very effective. Maybe not extremely practical from the stand point of access to the rear door, but very effective.

Funny thing is, I had the idea for those fiberglass caps about 30 years ago. Glad to see that my idea was not just useless speculation...oh, wait, I never did anything with it...I guess it was useless speculation!
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Old 02-07-2007, 09:46 AM   #27
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Yeah, flex would be a concern, but, if you overlap the skins kind of like roof shingles, I think it would work, would keep the weather out and allow enough rbeathing to keep things inside dry. You just couldn't do high speed runs in reverse particularly in wet weather. I think this is a reasonable design restraint.
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Old 02-07-2007, 03:31 PM   #28
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Quote:
Originally Posted by pete c
You just couldn't do high speed runs in reverse particularly in wet weather. I think this is a reasonable design restraint.
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Old 02-08-2007, 12:04 AM   #29
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wanna save money on fuel??? don't drive your bus....lol

i'm j/k

be interesting to see how things work out.

i haven't even started my bus since jan 1st. My block heater doesn't work and temps have been hovering right around zero degrees. i have confidence she would start, but not without a battery charger or jumper cables. Even with my almost new 8D battery.
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Old 02-08-2007, 06:15 AM   #30
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Re: lowered sides

Quote:
Originally Posted by captainkf
Here is a phot of a bus that has had the skirt lowered.
http://www.skoolie.net/gallery2/v/Skooli ... 1.jpg.html. . .
When I tried the link, I got this:
Error
Error (ERROR_MISSING_OBJECT) :
in modules/core/classes/helpers/GalleryFileSystemEntityHelper_simple.class at line 119 (gallerycoreapi::error)
in modules/core/classes/GalleryCoreApi.class at line 1942 (galleryfilesystementityhelper_simple::fetchchildi dbypathcomponent)
in modules/core/classes/helpers/GalleryFileSystemEntityHelper_simple.class at line 64 (gallerycoreapi::fetchchildidbypathcomponent)
in modules/core/classes/GalleryCoreApi.class at line 1885 (galleryfilesystementityhelper_simple::fetchitemid bypath)
in modules/rewrite/classes/RewriteSimpleHelper.class at line 50 (gallerycoreapi::fetchitemidbypath)
in ??? at line 0 (rewritesimplehelper::loaditemidfrompath)
in modules/rewrite/classes/RewriteUrlGenerator.class at line 98
in modules/rewrite/classes/parsers/modrewrite/ModRewriteUrlGenerator.class at line 50 (modrewriteurlgenerator::_onload)
in init.inc at line 113 (modrewriteurlgenerator::init)
in main.php at line 73

What color do I use for which number? (Man, I haven't done a color-by-number picture in quite a while. . .hope I can stay in the lines. . .)
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