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02-04-2011, 10:43 PM
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#9 |
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Senior Member
Join Date: Jan 2002
Posts: 655
Likes: 8
Liked 244 Times in 26 Posts
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Re: 3 speed auto transmissions
The issue is gear ratio spread with a single, simple planetary set.
Using VERY ROUGH calculations with a 70 tooth sun and 100 tooth ring gives the following: Low gear= 2.43:1 Second gear = 1.0:1 High Gear = 0.59:1 These are pretty unrealistic gear ratios for a small block chevy as a three speed. But it was a good thought experiment. |
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