Boog
on a 3.55 gear ratio the drive shaft turns 3.55 times for every 1 turn
of the axle hope this helps
Dave T. 99 solar yellow sport cc 4x4
Boog318@aol.com wrote:
>
> Ok heres something out of the July 98 High Performance Mopar Magazine:
> They are gonna throw a 518 into a Road Runner.
> These guys compare the A-500 and the A-518 which is the hydraulic version of
> the newer A44RE (A-500) and A46RE (A-518).
>
> Gearing Table:
> A-500 A-518
> 1st 2.74 2.45
> 2nd 1.54 1.45
> 3rd 1.00 1.00
> OD 0.69 0.69
>
> Torque multiplication table with 3.55 and 3.92:
>
> Effective overall gear ratio
> A-500 A-518
> 3.55 3.92 3.55 3.92
>
> 1st 9.73 10.74 8.70 9.60
> 2nd 5.47 6.04 5.15 5.68
> 3rd 3.55 3.92 3.55 3.92
> OD 2.45 2.71 2.45 2.71
>
> We know that for the gear ratio in the differential, say 3.55, for every
> revolution of the drive shaft, the axle turns 3.55 times
> So if I am interpreting this right, then in 1st gear (A518) one revolution of
> the planetarys turns the output shaft (hence the driveshaft) 2.45 times which
> turns the rear axle 8.7 times.
> Comparing to the A500; One revolution of 1st gear turns the drive shaft 2.74
> times which turns the axle 9.73 times.
> That would mean the A500 has more torque in 1st then the A518. It seems that a
> 318/500/3.92 Posi would be a killer combo, but even this article says the A518
> has more torque capacity.
>
> There has to be something else involved. Like the engine maybe? Torque
> Converter?
> (Charelton Heston Mode-on)
> God...Someone please help me make some sense of this!
> I WANT THE KNOWLEDGE!! Dammit! Why cant I FIGURE this OUT!
> (Charelton Heston mode-off)
> One thing that is easily understood. When you are running in overdrive your
> final gear ratio is 2.83 which turns our Daks into guttless wonders at low
> speeds. I have always turned my OD off until I hit at least 50mph and can
> sustain it. The previous owner didnt know any better and even ran around in
> 4wd with OD engauged. Thats why I got a new trans at 53k. Thank God for that
> warranty! I'd rather frequent the gas station then the tranny shop. I get
> about 13-14 running around town (no OD) and the best on the hiway was 19.3.
>
> I hope someone out there can finish up on this and explain the differences
> between trannys.
> I must rest now, all this damn thinking is too much for a Friday!
> BOOG
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