| Re: [GMCnet] Super springs [message #96626] |
Sat, 21 August 2010 07:14  |
Gary Casey
Messages: 448
Registered: September 2009
Karma: 0
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Senior Member |
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Lyle,
That is certainly a logical idea. Although, I don't see any reason for going
"coil-over-shock" as that would be a real design exercise. One could simply put
a coil spring in place of the air spring. Even that would be a real design
challenge, fitting the desired spring rate and load into the space available and
keeping the stress reasonable. The problems are probably beyond that, though:
One of the biggest advantages of air springs is the ability to level the coach
when parked on a sloped surface. Another problem is financial: Sure, you can
go to a spring company and they will wind whatever you want - for a price that
will likely be higher than any costs associated with the air suspension. The
weight of a given coach doesn't vary by much, but I'll bet different coaches are
all over the map when you consider all the variations. So the potential market
for a given design will be very small.
Gary Casey
Emery,
You bring up a point I have been rolling around in my mind. (Ok, don't laugh
everyone - I'm a newby and am still trying to figure out how all the systems
work) Has anyone ever looked into developing a horizontal coil over shock to
replace the airbags? Granted, the ride wouldn't be the same and it would be a
fixed ride height... However, given the email traffic I've followed on air
compressors rebuilds, leaking bags, lines and valves,?along with plastic cones
that grenade- wouldn't a well engineered coil/shock alternative be worth
developing?
Thanks!
Lyle
Lyle A. Rigdon, Retired?Superintendent
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| Re: [GMCnet] Super springs [message #96630 is a reply to message #96626] |
Sat, 21 August 2010 08:19  |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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| Gary Casey wrote on Sat, 21 August 2010 08:14 |
Lyle,<snip>The weight of a given coach doesn't vary by much, but I'll bet different coaches are all over the map when you consider all the variations. So the potential market for a given design will be very small.
Gary Casey
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Gary,
You have missed a basic issue with the coach. From light to heavy the back of my coach can change by over 1000#. This is an extreme case, but 300+ in fuel and another 300+ in water gets you most of the way there in a hurry. I often add 4~600# in tools and material when I am working (not much anymore).
I came back from the distributor a couple of years ago with over 400# of bottom paint (I don't want to tell you what the street value was!) along with all the sanders, grinders and other bottom fairing gear most of it in the back bed room.
I would not give up that automatic compensating suspension for anything.
Now air shocks in the front, that would be a plan.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Super springs [message #96634 is a reply to message #96630] |
Sat, 21 August 2010 08:34 |
gmcrv1
Messages: 839
Registered: August 2007
Location: Memphis
Karma: -1
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Senior Member |
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Gabriel Hi-Jackers up front controlled from a extra air valve off the on
board compressor,
Yes, that would be interesting!
Tom Eckert N2VWN
72 Glacier
Oakland, TN
On Sat, Aug 21, 2010 at 8:19 AM, Matt Colie <mcolie@chartermi.net> wrote:
>
>
> Gary Casey wrote on Sat, 21 August 2010 08:14
> > Lyle,<snip>The weight of a given coach doesn't vary by much, but I'll bet
> different coaches are all over the map when you consider all the variations.
> So the potential market for a given design will be very small.
> > Gary Casey
>
> Gary,
>
> You have missed a basic issue with the coach. From light to heavy the back
> of my coach can change by over 1000#. This is an extreme case, but 300+ in
> fuel and another 300+ in water gets you most of the way there in a hurry. I
> often add 4~600# in tools and material when I am working (not much anymore).
>
> I came back from the distributor a couple of years ago with over 400# of
> bottom paint (I don't want to tell you what the street value was!) along
> with all the sanders, grinders and other bottom fairing gear most of it in
> the back bed room.
>
> I would not give up that automatic compensating suspension for anything.
>
> Now air shocks in the front, that would be a plan.
>
> Matt
> --
> Matt & Mary Colie
> '73 Glacier 23 Chaumiere (say show-me-air)
> SE Michigan - DTW 3.2/4R
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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