fj12ryder wrote:
Just curious, but aren't Sumosprings just glorified bump stops?
You could easily claim airbags are glorified bump stops and be equally wrong.
Sumos look like oversize bump stops but they function differently (as do airbags).
A bump stop is a fail safe that shouldn't come into use unless you overload the springs (could be overloading, big bump or some combination). While far better than the axle hitting the frame, they are very harsh.
Sumos should be engaging in normal operation well within the weight limits.
They are progressive which means, when you first start to engage them, they provide only a small resistance per inch of compression. This results in a relatively soft ride. Then as they compress more, the resistance per inch of compression increases providing more support. This provides the support without the harshness. They are a compromise between timbrens and airbags.
- Timbrens aren't progressive, so running empty, they tend to be harsh when they engage (not as bad a bump stop).
- Airbags can be adjusted to the load but they are more expensive and require upkeep.
To the OP's question, obviously, if they are not aligned with the support, it will tend to bend rather than compress them. My guess is you either used the wrong mounting holes or got the wrong mounting bracket. On our 2008 F250, they line up to provide straight compression along the axis of the spring.
Tammy & Mike
Ford F250 V10
2021 Gray Wolf
Gemini Catamaran 34'
Full Time spliting time between boat and RV
