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 > Sumo Springs on 2022 F350 SRW

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IdaD

Idaho

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Posted: 06/06/22 11:54am Link  |  Quote  |  Print  |  Notify Moderator

valhalla360 wrote:

- Timbrens aren't progressive, so running empty, they tend to be harsh when they engage (not as bad a bump stop).


I haven't noticed any ride quality difference on my 2015 2500 with Timbrens. I put them on when the truck was pretty much new so 7 years and almost 90k miles, and they're holding up fine. I probably have an inch or so between the Timbren and axle when empty.


2015 Cummins Ram 4wd CC/SB


2112

Texas

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Posted: 06/06/22 02:04pm Link  |  Quote  |  Print  |  Notify Moderator

valhalla360 wrote:

Timbrens aren't progressive,.....
They are progressive. I have owned a pair for 16 years without issue.

Here's a comprehensive video comparing Sumos an Timbrens https://youtu.be/gGbTbSisBd4


2011 Ford F-150 EcoBoost SuperCab Max Tow, 2084# Payload, 11,300# Tow,
Timbrens, PullRite SuperGlide 2700 15K
2013 KZ Durango 2857


Cummins12V98

on the road

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Posted: 06/06/22 07:55pm Link  |  Quote  |  Print  |  Notify Moderator

valhalla360 wrote:

Cummins12V98 wrote:

Why not add airbags and set to have the truck run level. Bilstien's are another good add along with proper tire pressure based on load.


They are a 3-4 times the upfront cost and they require maintenance and adjustment.

And before you say it...Installed incorrectly, they won't last long either.


HMMMMM, never had an issue and never heard of any maintenance on air bags.


2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"

"HeavyWeight" B&W RVK3600

2016 MobileSuites 39TKSB3 highly "Elited" In the stable

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MNRon

Tennessee

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Posted: 06/06/22 10:15pm Link  |  Quote  |  Print  |  Notify Moderator

Interim Update

Spent a while on the phone with Sumo Tech Services Mgr - great guy, and fabulous support!

He commented that the Sumo (or bump stop etc) does not travel in a straight line relative to the lower perch stop, which is rounded and angled to intersect accounting for this. He took my installation specifics, weights, etc and believes that all is correct but that potentially a bump or something temporary ‘overloaded’ the Sumo causing it to swish sideways in attempt to relieve this and sliding off of the perch; once off it no longer functions properly and was tore apart with further bumps.

He wanted further specifics (which I sent tonight), but called me back to say that he’d already set replacement parts aside (including platforms to prevent a similar problem in the future) awaiting an address to intersect my travel. He also commented that leaving a little bit larger initial unloaded gap could also minimize this issue.

Can’t say enough good about Sumospring responsiveness so far!! Hope to get this resolved within the next few days and then a couple thousand miles traveling the Rockies over the next 4-5 weeks should give the resolution a good test. Thanks for all the replies and information. Hope to report back good news in a month [emoticon]


Ron & Pat
2022 F350 Lariat CCSB SRW Diesel
2019 VanLeigh Vilano 320 GK

MNRon

Tennessee

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Posted: 07/18/22 07:11pm Link  |  Quote  |  Print  |  Notify Moderator

* FINAL UPDATE *

As mentioned, the Sumosprings customer service was fabulous! Not only did they send me new Sumosprings, but also sent landing platforms to ensure that I wouldn’t have the same issue as I initially experienced. Even more, because I’d mentioned that I noticed more ‘drift’ in the F350 steering as compared to my prior Duramax3500, they sent me some additional bump stops to engage the overload springs earlier to help with handling; FREE!

After installing everything (an hour and a half because I did it in campground) everything is working great. I’ve traveled ~2K miles in the Rockies and high plains (including a couple days in strong, gusty, cross winds) and the loaded handling is wonderful. Solved the squat issue, as well as significantly reduced the steering drift I’d noticed. Additionally, I’ve put on another 2K miles unloaded and am equally happy with unloaded performance. The unloaded gap means that unloaded performance is identical to pre-Sumosprings unless I hit larger bumps which then start to engage. I do notice large bumps can cause the overload stops to make a noise once in a while. Bottom line though, I’m happy to trade that for the superior loaded performance.

End result - very happy with Sumosprings, even happier with their customer service!!

fj12ryder

Platte City, MO

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Posted: 07/19/22 07:02am Link  |  Quote  |  Print  |  Notify Moderator

Sounds like a stand up company.


Howard and Peggy

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TravelinDog

Nevada

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Posted: 07/19/22 04:48pm Link  |  Quote  |  Print  |  Notify Moderator

Glad you got the issue resolved. Nice to see a company stand behind its product.


Just say no to the payload police ">

Grit dog

Black Diamond, WA

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Posted: 07/21/22 12:31pm Link  |  Quote  |  Print  |  Notify Moderator

valhalla360 wrote:

Cummins12V98 wrote:

Why not add airbags and set to have the truck run level. Bilstien's are another good add along with proper tire pressure based on load.


They are a 3-4 times the upfront cost and they require maintenance and adjustment.

And before you say it...Installed incorrectly, they won't last long either.


A basic set of 5klb bags is around 10% more than a set of sumos. Giver take.
I suppose they do require adjustment. IE adding or removing air.
But you’re comparing 2 different products that perform a similar function.
I never have had airbag maintenance on any of my to do lists….Had one fail at 15+ years old. But I’ve never used sumos or Timbrens for 15 years to compare whether they last longer.
Bottom line, OP got too soft of Sumos, or relied on them too heavily or improper fit/install. Or combination thereof.


2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29

Huntindog

Phoenix AZ

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Posted: 07/21/22 04:56pm Link  |  Quote  |  Print  |  Notify Moderator

I like the flexability of airbags. Not so much for the weight capacity, but being able to raise and lower the nose of the 5ver. My first trip out with it there was a small berm going into our campsite. The leveling jacks would not clear it. We ended up doing a lot of shovel work to get it done. With the airbags and on board bluetooth pump, we can easily get past such an obstacle without breaking a sweat.


Huntindog
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Thermoguy

Graham, WA

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Posted: 07/24/22 01:11pm Link  |  Quote  |  Print  |  Notify Moderator

I'm impressed that you have driven 4K miles in just over a month...

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