[AT] Discharge Chains

[Gene Dotson]

Two things have eliminated the need for ground straps. Main one is the use 
of steel belted tires that discharge the charge. The second one is that 
discharge hoses are made with conducting straps within to prevent static 
build up when transferring. When the tanker is loaded a grounding strap is 
connected to the truck to discharge any static electricity.

                    Gene




-----Original Message----- 
From: Spencer Yost
Sent: Friday, April 01, 2016 12:21 AM
To: Antique tractor email discussion group
Subject: Re: [AT] Discharge Chains

Tanker trucks used to have them, but someone told me that radial tires will 
discharge (tires are not as good an insulator as you might expect) and they 
were not needed anymore.

Total here-say from one source from years ago.   Take it with a grain a 
salt.

As for the strap things.   Always wondered about them too. They seemed 
different than curb feelers. Someone riding with me once told me they were 
antennas. Sounded fishy to me but I had nothing to counter with and still 
don't know for sure.

Spencer Yost

> On Mar 31, 2016, at 11:39 PM, Mike M <meulenms at gmx.com> wrote:
>
> I have no good answer for you Ray, I can only assume that auto and truck
> manufacturers designed a better mousetrap, if the problem was static
> buildup.  I remember as a kid in the 70's seeing cars with what appeared
> to be rubber straps hanging from cars. I never did know what they were
> for. Then again those were the days of water injection systems as well.
>
> Regards,
> Mike M
>
>
>> On 3/31/2016 12:51 PM, Ray Trimble wrote:
>> Growing up in Northern Louisiana in the early 50's I would see trucks 
>> dragging a chain with sparks flying, Dad said that this was to keep a 
>> static charge from building up. What has been done to eliminate the need 
>> for these?
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