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12-03-2024, 07:34 PM
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#1
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Junior Member
Join Date: Dec 2024
Posts: 4
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Suspension stops
Hello everyone,
I’m looking at a 1997 Newman Dutchstar to purchase. When the airbags are deflated I noticed that the front tires are hitting the inner fenders. Shouldn’t there be some kind of bump stop to prevent this from happening, seems like a safety issue if an airbag blew out. Thank you for any input
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12-03-2024, 08:16 PM
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#2
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Member
Join Date: Sep 2024
Posts: 90
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Most of the coaches out there will hit the wheel openings if the wheels aren't straight ahead..
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12-04-2024, 08:33 AM
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#3
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Junior Member
Join Date: Dec 2024
Posts: 4
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Thank you for your reply, the wheels are pretty much straight ahead, maybe slightly off, is that still normal?
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12-04-2024, 08:40 AM
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#4
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Senior Member
Join Date: Mar 2024
Location: Bohemia NY
Posts: 1,563
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Do you have the correct original size tires? Check the placard for what belongs and compare to what you have. Someone may have upsized them.
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Dennis
Bohemia NY
2008 Nimbus 342 SE Carlyle 
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12-04-2024, 05:42 PM
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#5
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Senior Member
Join Date: May 2010
Location: N.E. Florida
Posts: 1,431
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Is normal for my 98 American Eagle riding on the Spartan Mountain Master chassis. Chance of complete deflation while under way is very slim IMHO.
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DaveS
1998 American Eagle 40EVS
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12-04-2024, 05:56 PM
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#6
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Senior Member
Join Date: May 2004
Location: MI
Posts: 2,543
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A blow out. When I had one it took out the airline to the air bag.
My body doesn't sit on the tires when the air bags are deflated. That doesn't sound right.
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12-05-2024, 05:39 AM
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#7
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Senior Member
Join Date: Mar 2024
Location: Bohemia NY
Posts: 1,563
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Air bags can also fail similar to a tire. Hit a large enough road hazard and the impact can pop one.
__________________
Dennis
Bohemia NY
2008 Nimbus 342 SE Carlyle
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12-05-2024, 05:12 PM
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#8
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Junior Member
Join Date: Dec 2024
Posts: 4
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You’re right, it call for 75 series on the placard but has 80 series tires on it. They’re like new but 7 years old so I may replace the front two with the right size and see if that helps
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12-05-2024, 05:21 PM
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#9
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Senior Member
Join Date: Mar 2024
Location: Bohemia NY
Posts: 1,563
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Quote:
Originally Posted by Bruceskii
You’re right, it call for 75 series on the placard but has 80 series tires on it. They’re like new but 7 years old so I may replace the front two with the right size and see if that helps
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In addition to the series, what size should be there and what size do you have? The oversized tires take away form acceleration, hill climbing, and braking performance, and speedometer accuracy.
__________________
Dennis
Bohemia NY
2008 Nimbus 342 SE Carlyle
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12-05-2024, 07:39 PM
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#10
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 32,178
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Inside the air springs is a "bump-stop". to limit downward travel. The bump-stop is a different height, depending on use and chassis design.
reference: https://www.firestoneairide.com/cont...erial_2014.pdf
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;GS Life member,FMCA " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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12-06-2024, 12:09 PM
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#11
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Junior Member
Join Date: Dec 2024
Posts: 4
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The seller says the airbags were just replaced so that may be a clue. I looked at a straight axle spartan chassis and it had several inches of clearance with the suspension down. Thanks for the link to Firestone, lots of good information
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12-06-2024, 10:11 PM
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#12
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 32,178
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Quote:
Originally Posted by Bruceskii
The seller says the airbags were just replaced so that may be a clue. I looked at a straight axle spartan chassis and it had several inches of clearance with the suspension down. Thanks for the link to Firestone, lots of good information
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It doesn't help that it has larger tires on the front than specified; if you make sure the wheels are straight before dumping the air springs you shouldn't have any contact with the body fender.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;GS Life member,FMCA " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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