| Air Compressor [message #259877] |
Sun, 24 August 2014 02:51  |
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MangoMushroom
Messages: 67
Registered: August 2008
Location: Emeryville, CA
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Thinking about switching to a different air compressor after my Dana tired quickly. I've checked for leaks and all is good on that front... What are your thoughts regarding other compressor types. ViaAir 480c caught my eye.
Is it easy to fit a different compressor where the Dana used to sit?
****MangoMushroom
`76 GMC Birchaven named "Harvey"
[Updated on: Sun, 24 August 2014 03:10] Report message to a moderator |
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| Re: Air Compressor [message #259882 is a reply to message #259877] |
Sun, 24 August 2014 04:14  |
appie
Messages: 902
Registered: April 2013
Location: denmark
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Don't know, but my new viaair just broke down after a 1000Miles Don't know yet what is wrong
Appie
eleganza 76 "Olga" now sadly sold
6 wheel discbrake
Quadrabags
Springfield stage 2 462 olds
Manny tranny
( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html
Fulltiming in Europe july 2014 til july 2016
Denmark
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| Re: Air Compressor [message #259898 is a reply to message #259882] |
Sun, 24 August 2014 10:18 |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
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I just bought a 450c, reasonably happy.
the 480 would only be better.
Oilless compressors are noisy beasties though.
I hope it doesn't fail in 1000 miles!
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: Air Compressor [message #259902 is a reply to message #259898] |
Sun, 24 August 2014 10:45 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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I bought a Viair 350-C from Jim B several years ago and am happy with it. It is a little slow, but is a 100% duty cycle unit and has given me no problems since the install.
http://www.gmcmhphotos.com/photos/g5506-new-viair-suspension-compressor.html
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: Air Compressor [message #259914 is a reply to message #259877] |
Sun, 24 August 2014 12:05 |
appie
Messages: 902
Registered: April 2013
Location: denmark
Karma: 2
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found a defect checkvalve seems to be a common fault and a cheap fix, but where to find one in the netherlands
Appie
eleganza 76 "Olga" now sadly sold
6 wheel discbrake
Quadrabags
Springfield stage 2 462 olds
Manny tranny
( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html
Fulltiming in Europe july 2014 til july 2016
Denmark
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| Re: [GMCnet] Air Compressor [message #259925 is a reply to message #259924] |
Sun, 24 August 2014 14:28 |
appie
Messages: 902
Registered: April 2013
Location: denmark
Karma: 2
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Amazing, this forum
And I thought this was a us thing And I get all these offers and info in europe! Wauaw!
Appie
eleganza 76 "Olga" now sadly sold
6 wheel discbrake
Quadrabags
Springfield stage 2 462 olds
Manny tranny
( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html
Fulltiming in Europe july 2014 til july 2016
Denmark
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| Re: [GMCnet] Air Compressor [message #259943 is a reply to message #259877] |
Sun, 24 August 2014 17:05 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Andre,
I have been running a Viair 480C for 4 years in Double Trouble and it works well, I would suggest you wire it through and 80 amp
relay. Use the lead that currently powers the Dana pump to control the relay. Use the same size wire as on the pump from a power
source to the relay and the relay to the pump.
Here's a complete kit on eBay for $214.95 with FREE SHIPPING!
Full URL:
http://www.ebay.com/itm/Viair-480C-Single-Pewter-Compressor-200-PSI-Max-Air-Ride-Suspension-Bags-Valves-/231033129513?pt=Motors_Car_
Truck_Parts_Accessories&hash=item35caa5ca29&vxp=mtr
Tiny URL: http://tinyurl.com/qj6ro5v
Yes, it is easy to install it where the Dana was.
Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
USA '75 Avion - Double Trouble TZE365V100426
AUS '75 Avion - The Blue Streak TZE365V100428
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Andre Mandel
Sent: Sunday, August 24, 2014 2:52 AM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Air Compressor
Thinking about switching to a different air compressor after my Dana burned out quickly. What are your thoughts regarding other
compressor types. ViaAir 480c caught my eye.
Is it easy to fit a different compressor where the Dana used to sit?
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Unsubscribe or Change List Options:
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Air Compressor [message #260127 is a reply to message #259943] |
Tue, 26 August 2014 16:21 |
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MangoMushroom
Messages: 67
Registered: August 2008
Location: Emeryville, CA
Karma: 0
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Thank you for the informative response, Rob. The kit you sent a link for includes a 40 amp relay...
First of all, and forgive me for asking, but what exactly is the function of the relay?
Secondly, is the 40 amp relay included in the kit not adequate? Hence your recommendation of an 80 amp relay?
Thanks again for your feedback...
****MangoMushroom
`76 GMC Birchaven named "Harvey"
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| Re: [GMCnet] Air Compressor [message #260131 is a reply to message #260127] |
Tue, 26 August 2014 16:58 |
Jim at the Co-op
Messages: 291
Registered: May 2014
Location: Orlando Florida
Karma: 2
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See it's all a matter of current drain and air capacity. Here in the US,
we always look for thicker steaks, fatter tires -- you know, the Binford
Complex. I feel a good pump yes will pump the coach up fast but also do it
using a reasonable amount of current that will not suck the life out of the
rest of the electrical system. There is a compressor using a York
compressor on a Ford starter motor. It will "Pump You Up" right ow there
brother but you can feel your coach getting it's life sucked out while it's
running! And you had better have the motor running to fire it up! That's
really cool and heck, you could help pump up an 18 wheeler tire with that
thing but that does not fit the electrical system you have on board. You
need a compressor that does the job without effecting other stuff of have
allowances made to operate it.
I now use the 380C Viair. It'a THE cost effective way to make pressure
with 12 volts. This model needs no special circuits, I do modify the
original Power and Electro Level systems for more current yes and we can
talk about that later but in a factory configuration, the 380 does a good
job and makes the entire system stable. You can get these all over the
place-- let your wallet support the community---.
On the mods:
Power level gets a relay controlled direct power from the battery. Use the
original compressor power to run the relay-- Use with a 40 amp.
Elaectro level gets it's compressor power to the relay back there not from
the pitiful 10 ga. wire from the front but from the living area electrical
system through a 40 amp fuse. There are other small things but that's the
biggest deal.
On both I change the regulator to 110 psi on and 145 psi off. This way
there isn't a hole in the system to go up.
The ole V2 motor is cute in a hit/miss motor kinda way but as important as
on board pressure is, I really want something else under my butt. Hey,
take 4 of the ole compressors and make an 8 cyl radial motor for display!!!
Jim Bounds
On Tue, Aug 26, 2014 at 5:21 PM, Andre Mandel
wrote:
> Thank you for the informative response, Rob. The kit you sent a link for
> includes a 40 amp relay...
>
> First of all, and forgive me for asking, but what exactly is the function
> of the relay?
>
> Secondly, is the 40 amp relay included in the kit not adequate? Hence
> your recommendation of an 80 amp relay?
>
> Thanks again for your feedback...
> --
> ****MangoMushroom
> `76 GMC Birchaven named "Harvey"
>
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: [GMCnet] Air Compressor [message #260184 is a reply to message #260127] |
Tue, 26 August 2014 22:54 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Andre,
My recommendation of the 80 Amp relay is an Oops.
The last air pump I looked at was even more powerful than the Viair 480C, it put out enough air to run air tools. It's designed and
made for the guys that have the cars that hip hop down the road; it's overkill for a GMC.
There is a pressure switch that turns the pump on and off; IIRC on the OEM pumps (Thomas and Dana) it feeds the power directly to
the pump.
The larger volume / higher pressure range Viair pumps require more power and the wires from the pressure switch can't handle it.
Therefore you use the pressure switch to control the relay and wire the pump to a source of more power / amps.
Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
USA '75 Avion - Double Trouble TZE365V100426
AUS '75 Avion - The Blue Streak TZE365V100428
-----Original Message-----
From: Andre Mandel
Thank you for the informative response, Rob. The kit you sent a link for includes a 40 amp relay...
First of all, and forgive me for asking, but what exactly is the function of the relay?
Secondly, is the 40 amp relay included in the kit not adequate? Hence your recommendation of an 80 amp relay?
Thanks again for your feedback...
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Air Compressor [message #260193 is a reply to message #260184] |
Wed, 27 August 2014 02:12 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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USAussie wrote on Tue, 26 August 2014 22:54
There is a pressure switch that turns the pump on and off; IIRC on the OEM pumps (Thomas and Dana) it feeds the power directly to
the pump.
The larger volume / higher pressure range Viair pumps require more power and the wires from the pressure switch can't handle it.
Therefore you use the pressure switch to control the relay and wire the pump to a source of more power / amps.
Regards,
Rob M.
The OEM system of feeding the pump direct from the pressure switch is marginal. Especially on a 40 year old machine. The OEM system feeds all the current through the internal wiring and the ingnition switch auxilary contacts. It's pushing the limits of that system. By using a relay that 20 amps or so current is delivered direct to the compressor. Thus removing that high current from the ignition switch and avoiding the voltage drop of the marginal size OEM wiring. The compressor runs better and the ignition switch is happy by not carring that load. It's an easy to do win win.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: [GMCnet] Air Compressor [message #260210 is a reply to message #260193] |
Wed, 27 August 2014 09:07 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Looking at the specs, the 40 amp relay is more than enough to do the job. An 80 Amp would be way over-kill, but still effective.
I've used several of the standard 40 Amp relays to power things in the GMC. No problems (yet).
Tom, MS II
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: [GMCnet] Air Compressor [message #260215 is a reply to message #260210] |
Wed, 27 August 2014 09:58 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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tphipps wrote on Wed, 27 August 2014 09:07Looking at the specs, the 40 amp relay is more than enough to do the job. An 80 Amp would be way over-kill, but still effective.
I've used several of the standard 40 Amp relays to power things in the GMC. No problems (yet).
Tom, MS II
I've had very few problems with these Bosch style relays. The few problems I've had, or seen, have been on relays with no identification on them as to who the mfr is. I've decided if the mfr doesn't want to admit they made them I don't want to use them.
Only other problems I've seen are when the terminal end is mounted up. This applies even if they are not directly exposed to water. The any condensation cannot get out and will accumulate.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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