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View Full Version : 2007 Hyper Shifter Linkage issue (possibly)



Driver9
06-13-2008, 11:41 PM
We had a really perplexing thing occur with our 2007 Hyper Car, we are running the direct shifter linkage and run a 2005 Kawasaki 636 engine.

I had taken the linkage off at the top, however, the car was not lowered while the linkage was off like that and was only moved three feet ahead - using our wheel around jack which was holding the back of the car up (which that should not cause an issue, the contact with the ground would be minimal if any).

However, when I went to go out for hot laps, the shifter was not right and I could not shift the car, the shifter arm (that goes on the motor) had been rotated from a position that is usually around 3 o'clock to a position more like 10 o'clock.

When moved back to roughly the proper position, I still had some issues with shifting. I could not go directly into first, I had to go to second and than down to first. In the heat, I went to shift back like I would to go into second and the motor just free-spooled.

When I attempted to go out for the feature, the car would not shift into the third at all, no matter how hard I tried.

Some of the things I noticed are:

When in the pits at low speed - I can shift through all gears.
There was alot of slop in the shifter linkage itself, about two inches forward and back.
On the jack, I can shift through all the gears.
When shifting, I would go down for first, than up for second (on the jack), and would have to pull it back three more times to hit neutral.

Anyone have any ideas as to what could be going on? I highly doubt it is the transmission, since the car was not lowered with the shifter linkage hanging down or anything.

Any help is appreciated!

kmitch199
06-14-2008, 12:57 PM
We had some issues with my dad's car a couple of weeks ago. He also runs a kawi motor. The shift shaft into the motor could move about a inch and if it was inward it would not shift. We pulled it out and temporarily fixed it by putting a hose clamp around the shaft. We were at the track and didn't have a choice. You may have had the shaft slip and spin around and reengage. Then you moved the shift arm on the shaft in the "correct" position. I haven't looked at how the shaft engages the shift drum to see why this happens since I don't get to see the car except at the track. One of these days I'll look at the parts drawings and figure out how and why it happens.