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Old 03-05-2021, 01:15 PM   #1
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2009 Workhorse W18 Sway

I recently bought a 2010 Damon Daybreak that is on a 2009 Workhorse W18 chassis. I'm very happy with the coach. It was well maintained. But I don't like the sway or tail wagging. It also has a harsh ride when going over road bumps and potholes (which I try to avoid). I have my RV service center working on the problem. They have suggested starting with Timbren springs but are having trouble finding them for a W18. Anyone have any other thoughts on the best way to address this? Or know if there's an alternative to Timbren springs for a W18?

Thanks for any help or ideas.
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Old 03-05-2021, 03:52 PM   #2
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Generally speaking you can get the most bang for the bucks by adding. Rear trac bar. I would check to see if there is one that will fit the W-18 chassis. The trac bar connects the chassis frame to the rear axle housing to eliminate the side to side motion created by the leaf spring suspension.
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Old 03-05-2021, 06:29 PM   #3
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The bump stops for the W18 are the same as for all the other W series chassis. Therefore you can order Sumo Springs for a 2009 W22 and get Sumo Spring equivalent of Timbren springs.

On my W20 I have Sumo Springs P/N SSF-280-47. The Sumo Spring application for the rear P/N is SSR-280-54-1.

I thought the rear Sumo Spring was too stiff for my W20 so I installed the Sumo Spring for the Workhorse P32 P/N SSR-290-54. I am not following Sumo Springs application so I you choose to do this do so at your own risk.
2003 34' Georgetown on W20 Workhorse Chassis. UltraRV power mods. Front Sumo Springs, Rear P32 Sumo Springs, UltraRV Track Bar.
1998 Jeep Toad.
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Old 03-07-2021, 08:03 AM   #4
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Good advice given here. Trac bars worked wonders for the rear tail wag on my W22, and the Sumos really helped soften the blow of bumps and potholes.

I did both front and rear on mine so can't say which was more effective, though I think with the Sumo Springs the front is most noticeable when you hit a big bump because you're sitting right over the front suspension.

I think the Timbren springs might be a bit too stiff based on some of the reviews I've read. Might be good for trucks carrying heavy loads, but I think for the cushioning effect you're after the Sumos are a better choice.

I'm also using the P32 Sumos on the rear of my W22, same as YeloDuster.
2004 National Dolphin LX 6320, W-22, 8.1, Allison 1000, Front/rear Trac Bars, Hellwig Rear Anti-sway Bar, Sumo Springs, Roadmaster Reflex Steering Stabilizer, 2005 PT Cruiser Toad
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Old 03-11-2021, 01:37 PM   #5
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I also own a 2010 Damon Daybreak on a 2009 W18 and put sway bars on the front and rear and now the couch stands straight up around corners. I've only driven it a 100 miles or so since but, it makes a huge difference. Well worth the money. I purchased Roadmaster's through etrailer and had several delivery and parts issues but that's another story. Even with the extra hassle that caused, it was still worth it once they were installed.

I just put a rear Super Steer trac bar on from RVupgrades and have yet to drive any distance to see if/how much it improves the tail wagging. I will say there is no way it could get worse.

As for the ride I have bilstein shocks in place and have no plans to replace them since I am not experiencing a "harsh ride" or the dolphin effect.

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