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  #1  
Old 07-18-2006, 11:24 PM
carson356
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do you drive or repair school busses?

i have noticed many school busses here in southern california that have several loose chains dangling from or near the rear axle, does anyone know what they are there for? i cannot think as to why they would be there. thanks

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Old 07-18-2006, 11:38 PM
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Years ago it was comon to see chains like that on fuel tankers.

On the busses, I bet it's just a discharge path so the tykes don't get zapped by a static discharge getting off the bus.
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Old 07-18-2006, 11:40 PM
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they don't actually touch the ground, would they have to to be a static discharge?
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Old 07-18-2006, 11:45 PM
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They would need to touch the ground to provide a discharge path.
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  #5  
Old 07-19-2006, 05:33 AM
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Quote:
Originally Posted by Palangi
They would need to touch the ground to provide a discharge path.
Ambulances have'em as well,I've also seen'em on propane trucks.

Good question,I like the static discharge theory,never really thought about it,now I'm gonna have to ask my friends at the first aid squad.
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Old 07-19-2006, 07:35 AM
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I was under the impression that ambulances/fire trucks had them so that if the first responders needed to repel down a hill (or something like that) they'd just drive the truck up to the edge, tie their rope around the chains on the truck, and use the truck to lower themselves down (as opposed to finding a tree or natrual tie-off of sufficient strength).

This doesnt help the school bus question though, I can't imaging that schoolkids need to tie off to their bus to repel home =)

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Old 07-19-2006, 08:10 AM
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Curb feelers?
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Old 07-19-2006, 08:21 AM
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Those are automatic chainers. Think snow.
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Last edited by TX76513; 07-19-2006 at 08:47 AM.
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  #9  
Old 07-19-2006, 11:36 AM
carson356
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Quote:
Originally Posted by TX76513
Those are automatic chainers. Think snow.

that sounds reasonable. but they aren't that low, can they be lowered?
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Old 07-19-2006, 12:41 PM
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OP is in San Diego; would snow chains be necessary?

BTW, I googled the topic and it came back with several links. One was a PDF document with (contractual?) requirements for school busses. It was far too long to read through, but the link description made mention of chains near the axle for jacking or lifting the bus. Why they'd use chains for that I don't know; maybe the link summary just threw the context way off and I'm chasing water with a net here, or maybe there is some sort of jack that works with chains, or a tow vehicle that uses chains to better secure the bus during towing.
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Old 07-19-2006, 12:52 PM
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Quote:
Originally Posted by TX76513
Those are automatic chainers. Think snow.
In southern California?
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  #12  
Old 07-19-2006, 03:12 PM
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Quote:
Originally Posted by Mike Murrell
In southern California?
Do the kids in S Cal ever go to other school districts where there is snow or maybe ski trips in the mountains. I don't know Some of the school buses donated to New Orleans have them.

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