Torsilastic spring / BUSSCAR /OISA/ OMNIBUS INTEGRALES SA
TORSION BAR suspensions use a steel bar in a sleeve connected to a lever arm to provide the up and down action. Newer torsion bars are encased in hard rubber inside the sleeve to further buffer the road noise and vibration between the axle and the chassis. Eagle passenger buses made this suspension famous and many entertainers will only use Eagle buses for touring because of their ride characteristics. Torsion bar suspensions are less affected by porpoise(ing) and have excellent resistance to tipping. Foretravel and Safari are the major motorhome builders that use or have used this suspension system.
No component in the Torsilastic Suspension System requires lubrication, only periodic height adjustments are necessary, and these are easily accomplished by adding or removing shims, or loosening or tightening threaded adjustment rods.
The Torsilastic Suspension System is built for a long service life. Its simple and proven engineering design ensures that the Torsilastic Suspension System will operate virtually maintenance free. Your vehicle will never be stranded or inoperable due to a catastrophic spring failure, which can happen when operating air bag systems.
To determine if you need suspension parts:
Look at your shackles-- they attach the torsilastic beam to the shim stack (two rubber joints). If the rubber in the shackles is bad, the metal will no longer be centered in the rubber and will need to be replaced.
To determine if you need torsilastic springs, you need to measure your ride height AND count the number of shims in front/behind each wheel position.
When you need to replace this suspension you need to replace two of round torsilastic shackles, its the same cost of mechanic installation.
