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Old 11-25-2020, 01:09 AM   #1
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Question Koni Front Shocks Killing Me Harsh Ride. Airbags? or European Stiffness

Just bought a Western 38 pusher with Peak Chassis. Monroe shocks looked old and Put Konis in. My ride is super harsh. I need help to first make sure my aftermarket Firestone front air bags are properly inflated and each one is even. Now I get a slight drift to the right and I am not floating around as much but man are these things stiff. Have also heard that my Peak may need an adapter for these shocks but haven't heard that much. I am ready to E-bay these and try Bilsteins but want to make sure my airbags are spot on. My factory airbags say 70 pounds but need help with the airbags right now.

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Old 11-25-2020, 09:12 AM   #2
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I am a little unsure what you are saying about the air bags. Typically the air bags are automatically inflated and controlled by the ride height control valve on a DP. Are you manually inflating the bags? How do you know you have 80 psi in the bags, just a curiosity question.

Shock absorbers do not typically control the harshness of the ride. The main factor is the spring rate. If the bags are overinflated you will have a very harsh ride.

Could you please elaborate on the inflating the air bags.
Richard Entrekin
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Old 11-25-2020, 09:24 AM   #3
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I am totally lost as well, and our previous coach was a 2003 Alpine 38'.

First, I would suggest posting in the Alpine Coach section of irv2:


That is where many of us with a lot of first hand experience with Alpine coaches and the Peak chassis "hang out".

RIDE HEIGHT determines amount of air in the air bags. Have you verified ride height? If not and need instructions, tell us what year coach you have and we can provide that information. You have FOUR ride height valves.

What Koni shocks do you have. The new 99 series Konis have been widely acclaimed by those (including me) who have installed them.

What tire pressure are you carrying front and rear?

Pulling to one side could be caused by a number of different issues-- a brake caliper handing up, tires themselves, incorrect ride height, alignment (particularly caster), etc.

Start with the inexpensive basics first and give us more info on exactly what you have if you want assistance.
Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
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Old 11-25-2020, 09:58 AM   #4
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I had a problem with the front ride height being to low in the front. The coach would slam when it hit an expansion joint in the road. The air bag would compress to the internal stop when it hit the joint. It was about 1 inch low. Adjusting the ride height up an 1Ē solved the problem.

Some Konis shocks are adjustable, if your are try a different setting.
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Old 11-26-2020, 10:31 PM   #5
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1000 Thanks to all replies. My first DP. Not exactly a 24' Ford Jamboree!!. I slowed my roll and started reading instructions for my AS-120 Neway Steer axle suspension. When I installed my Koni 99B-3209 shocks I just assumed that was it and was riding on nearly flat Firestone 115MO front air bags. I adjusted them up to 10.3" which is the Factory Neway height. Pinched in the sides and they feel like at least 70 pounds and my rig rose a full inch at least. 1/32" difference between the two and it rides great. Now my question.....Will the Firestones be the same height as my factory Neways. It's a 2004 and guy had some cognitive issues so didn't get the story on rig. He was really wealthy and maintained it well. Is there a place I can actually get a pressure reading on these bags?
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Old 11-26-2020, 10:40 PM   #6
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I'm 99% sure Neway suspensions utilized Firestone bags. Shouldn't be an issue.
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Old 11-26-2020, 10:48 PM   #7
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Konis did this to my Bay Star (F53) and if I didn't sell it I would hav put the Bilsteins back on the front. My Ventana has a very nice ride and I don’t want to stiffen it so Im going with HWH active air - expensive but also the best alternative available.
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Old 11-27-2020, 10:31 AM   #8
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Don't forget about tire pressure as well. Too high and it will ride very stiff.
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ags, air, airbag, koni, shocks

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