AX transmission |
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AX transmission |
r_towle |
Mar 15 2003, 05:24 PM
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#1
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Custom Member Group: Members Posts: 24,585 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
So,
I want to stop shifting so much at the Autocross. What gears would you all recommend??? Rich |
Demick |
Mar 21 2003, 06:05 PM
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#2
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Ernie made me do it! Group: Benefactors Posts: 2,312 Joined: 6-February 03 From: Pleasanton, CA Member No.: 257 |
Rich
Drive gears are always on the input shaft, driven gears are always on the output shaft. For the 5th / 3rd swap, it goes like this: 5th drive becomes 3rd driven 3rd driven becomes 5th drive 3rd drive becomes 5th driven 5th driven becomes 3rd drive Don't associate the drive vs driven gears by which one has dog teeth which engage the sliders. For 4th and 5th, these gears are the drive gears. For 2nd and 3rd, these gears are the driven gears. When you do the swap, be sure and move the bearings and bearing races along with the gears (in other words, always keep the gear, bearing, and bearing race together). Tim. You are correct with the opposite orientation of the gear teeth. Notice that with the stock setup, all gears on the input shaft have the same tooth orientation, and all the gears on the output shaft have the same orientation. Using helical cut gears is stronger and much quieter than straight cut gears, but creates an axial thrust on the shafts. By reversing the orientation, you are reversing the thrust direction on each shaft. So when you shift from 2nd to 3rd and then from 3rd to 4th, you reverse the axial thrust on both input shaft and output shaft each time. I have no experience with doing this, but think that this *could* be a very bad thing if the transmission wasn't designed to do that (and I doubt it was). Demick '74 2.0 |
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