Quote:
Originally Posted by andys  Adam,
The Toyota moustrap (torsion) spring is pre-loaded at the levers' center position. While it is true that the spring force is lowest at this point, the pre-load is high enough to be effective Also the spring is over-wound in its normal position, if I remember correctly.
The attached illustration is of the opposing spring configuration I was trying to describe. With this setup, there is no cancelling of force by springs working against each other. What I recall (from poor memory), is that there are four compression springs on the underside, two on each side of the shift lever. There are two pins about 3" (76mm) or so apart anchored to each side of the shifter housing. The springs ride over these pins with two bars retained by clips that can deflect when the lever moves from side to side. Hope this helps.
Andy |
If the toyota torsion spring is preloaded then it will work but it will only be for one direction, so two will be needed and they will have to have stops so they do not act upon each other. The illustration with the compression springs will also work but would also need to have something so they can be preloaded.
Don't get me wrong, you don't need to have a preloaded spring for all circumstances. It is just that if the mechanism won't go back to center with some force then it will need to have a preloaded spring. The springs force will always go to 0 at the rest position.