How critical is axle ratio?
In the modern day of 10 speed automatics, how necessary are 'towing' gears? By 'towing' I mean anything over 4.xx. These new transmissions have such low first gears compared to just a decade ago, is ...
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noteven wrote:
A person would think that torque delivered through a shaft turning at a higher rpm would deliver more power to do the work.
That is torque multiplication. Note not HP, just torque multiplied by the ratio and is basically from the engine crank shaft to the tires.
The tire's rev's per mile also a factor and use the OEM tire's rev's per mile as basis to figure
Then all of the gear boxes between the engine and diff add their gear ratio multipliers to the mix.
If the tranny's first gear is, say a 4.0:1, then multiply the engine crank torque by 4 and then multiply that by the diff's ratio.
And so forth for all of the gears in each gear box between the engine crank and diff
Yes, having a higher numeric ratio will spread the torque loading over the resultants of the above math
