Quote:
Originally Posted by wireties
What was the resulting gear ratio? And what does "stake the ID mean"?
TIA
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If you look at the output shaft you'll see that in the area where the gear is pressed on the shaft is "knurled" or has ridges formed in it to create the press fit. So I assume he means that they used a chisel or punch to deform (stake) the ID (inside diameter) of the gear so it will press on the un-knurled portion of the shaft where it will mesh with the input gear.
The mod of making the first gear mesh with the gear on the output shaft results in a 10.4 to 1 ratio instead of the factory 52 to 1.
Another way to accomplish this IF you have a lathe is to machine a spacer that fits on the output shaft between the gear and case so that it meshes with the input gear. On the motor end of the output shaft you need to turn it down the same amount as the length of the spacer so it will fit in the case.
In addition to increasing the output speed ~5x it reduces the drag in the trans aprox 50% by removing 2 gear interfaces. Make sure you don't loose the spacer on top of the input gear and remove the spacers on the other shaft, there is a small one on the shaft under the 25:10 gear.