Coil SumoSpring – Improving F-350 Front End Performance
We had good success adding SumoSprings to our 5th wheel axles to manage the road shock felt from the bad roads. We contacted SuperSprings International to see what could be done to improve the front end performance of our Ford F-350 ton dually. We were glad to discover Coil SumoSprings were available.
What Are Coil SumoSprings?
Coil SumoSprings are made from the same material as the SumoSprings we installed on our Montana 5th wheel. The micro-cellular polyurethane that is used decreases vibration, stabilizes sway, and tightens up existing factory coils. This is an added benefit for older trucks that have mileage ad the coil springs may have compressed over time loosing some mass and ability to manage poor road conditions. Our expectation for this upgrade was to add additional capacity to our front end coil springs, creating a cushion effect and stopping unwanted dip and rocking when we hit uneven pavement and bridges during our RV travel.
Installing The Coil SumoSprings
The Coil Sumo Spring installation was the simplest RV project we’ve done since we started our travel. In less than thirty minutes from start to finish and requiring nothing more than a jack and a spray bottle with a little water and dish detergent to lubricate the springs.
To order the Coil SumoSprings, a website contains the instructions of how to measure to ensure the springs will fit properly. If you have a truck with some mileage, the front springs may have compressed to some degree. The Coil SumoSprings are very dense and will not fit between the spring spacing if the wrong size is ordered. SuperSprings International provides simple instructions and a helpful chart to use here https://www.superspringsinternational.com/coil-sumosprings/#find-your-coil to help you find a set of Coil SumoSprings for your application.
We used a floor jack to lift the frame of truck just enough to take the pressure off the springs. A bottle jack could be used, but recommend securing the truck with a jack stand if used. Turning the wheels to access the springs, spraying a little diluted dish detergent on the springs, and the Coil SumoSprings slipped in place.
Coil SumoSprings Results
In the video below, we take you on our first drive towing our 19,500lb Montana along a bad stretch of I-285 north of Atlanta. We experience long sections of uneven concrete, broken and missing concrete, poor bridge access and departure – overall this section from I-20 to I-85 is a mess.
We didn’t expect the Coil SumoSprings to create a luxury vehicle ride, but are able to report the ride was much improved, dampening the road hazards experienced and with the added SumoSprings on the 5th wheel axles, dampening the front to back rocking from uneven roads.
This is a very inexpensive upgrade, simple install and improved our handling of bad roads when towing our 5th wheel.
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