Selector Issues

[Rob Futcher]

So... I had selector issues with my Richmond dog box at Mid Ohio; the first time, when changing from 2nd to try to engage 3rd, and found a box fill of nuetrals and a jammed gear lever. When the box came apart, there was nothing obvious, so re-assembled and tried again. Second time around, when downshifting from 3rd to second, the gearbox stayed in 3rd, but the shifter finger ended up in the 1st/2nd shifter fork.

The shifter forks are a little worn and allow some movement between the shifter fork ID and the dog ring OD which may be allowing the shitfer rail to rotate slightly. To me this seems like a shifter finger/rail/detent issue - but no obvious signs of the problem upon initial inspection.

Has anyone else had this problem and if so, did you find a bullet proof fix??

 

[mg_john]

I have a Webster dog box in a Spridget.

Last fall at Sebring Turkey Trot, my tranny got stuck in neutral (as I was leading my class naturally). When I took the tranny apart, I found I had put the spring in before the detent bullet for reverse so I was partially engaging the reverse rail and everything got hung up.

Also found that my shifter rails were very slightly out of alignment when in neutral so that may have contributed to the problem.

You may want to look into your rail/detent alignment. May or may not be your problem.

Hope you find the problem fast.

John

 

[EPrill]

Rob-

This sounds similar to some of the issues I've been having with the Hewland-internal Miata box and from what I hear these are pretty similar systems. Make sure the hockey stick hasn't worn down too much to where it can slip past the fingers. Every time my car gets hung in a gear and the shift lever is in neutral, all I need to do is pull the tail housing off and pop the fingers back in place and it's "fixed" although the cause is not remedied. That could be why you're not seeing anything obvious.

We've been looking at detents, fingers, forks, sliders, case issues, etc. Will be curious to hear what you do find--maybe it will be the same issue with mine!

Eric