Thanks Dolph, good to have feedback
The problem is with the GMC we can vary ride height, a semi trailer is always at ride height. This means the air pressure can be the same value for different weights. I suppose if you have ride height controlled, read AND front, that would work
As far as needing their fancy system, all you need is a pressure gauge and a table. It could be completely manual.
The hard part is making the table
________________________________
From: Gmclist on behalf of Dolph Santorine via Gmclist
Sent: Monday, November 23, 2020 5:19 PM
To: GMC List
Cc: Dolph Santorine
Subject: Re: [GMCnet] I wonder if (air bags)
I wonder how the
https://www.blueinktech.com/air_scale.php https://www.blueinktech.com/air_scale.php do it.
I picked his brain about calibration, and it was basically a set point at empty and full.
They are looking at weight, not ride height.
My interest was weight.
Keith, I can’t even begin to tell you how pleased I am with the Microlevel system. The campsite leveling feature is amazing.
Dolph
DE AD0LF
Wheeling, West Virginia
1977 26’ ex-PalmBeach
Howell EFI & EBL, Reaction Arms, Manny Transmission
“The Aluminum and Fiberglass Mistress”
|[ ]~~~[][ ][] \
"--OO--[]---O-"
>
> hooking up a pressure sensor is easy,
> The hard part is calibration.
> Hard as in measuring air pressure and weight at multiple suspension heights and weights.
>
> I doubt you could get by just measuring pressure at ride height and a range of weights, but maybe.
> maybe even just measure three weights and fit a curve to it.
>
> Oh you'd also need to do it for each bag type
> ________________________________
> From: Gmclist on behalf of Ken Henderson via Gmclist
> Sent: Monday, November 23, 2020 4:04 PM
> To: GMC Mail List
> Cc: Ken Henderson
> Subject: Re: [GMCnet] I wonder if (air bags)
>
> Simple enough to measure the pressure, but how do you determine the
> EFFECTIVE area of the convoluted air bags? Seems to me the only fixed
> value is that of the rigid end caps -- is that truly where all the
> suspension force is concentrated???
>
> Ken H.
>
>
> On Mon, Nov 23, 2020 at 3:07 PM Adolph Santorine via Gmclist <
>
>> Interesting way to get the weight in the bogies.
>>
>> I see a way to do it with a couple of sensors and an Arduino.
>>
>> The math isn’t complicated.
>>
>> Dolph Santorine
>>
>> DE AD0LF
>>
>> Wheeling, West Virginia
>>
>> 1977 ex-Palm Beach TZE167V100820
>> Howell EFI/EBL , Reaction Arms, Manny Transmission
>>
>>
>>> On Nov 23, 2020, at 2:49 PM, Jim Kanomata via Gmclist <
>>>
>>> I do not understand.
>>>
>>>
>>>> On Mon, Nov 23, 2020 at 9:51 AM Dolph Santorine via Gmclist <
>>>>
>>>> So, I received a call on these for our company truck.
>>>>
>>>>
https://www.blueinktech.com/air_scale.php
>>>>
>>>> It’s $150 per sensor.
>>>>
>>>> The only other thing I have with airbags is a GMC Motorhome.
>>>>
>>>>
>>>> Dolph
>>>>
>>>> DE AD0LF
>>>>
>>>> Wheeling, West Virginia
>>>>
>>>> 1977 26’ ex-PalmBeach
>>>> Howell EFI & EBL, Reaction Arms, Manny Transmission
>>>>
>>>> “The Aluminum and Fiberglass Mistress”
>>>>
>>>> |[ ]~~~[][ ][] \
>>>> "--OO--[]---O-"
>>>>
>>>> _______________________________________________
>>>> GMCnet mailing list
>>>> Unsubscribe or Change List Options:
>>>>
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>>
>>>
>>>
>>> --
>>> Jim Kanomata
>>> Applied/GMC, Newark,CA
>>> jimk
>>>
http://www.gmcrvparts.com
>>> 1-800-752-7502
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>>
>>
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