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NoControl
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Join Date: Mar 2009
Location: Ohio
07.14.2009, 07:18 AM

I believe for your example it might look like this:

44/16 43/19

then just divide by the smallest number and you get your ratio I think the example would look like:

2.75:1:2.26:1 since having the X : 1 : X : 1 is redundant so you then have:

2.75 : 2.26 : 1 or for a simple clean ratio you take (A x B = FDR : 1) :

6.215 : 1



Edit: Hmmm that looks silly only haing it taht way so I guess I'll use a E-revos drivetrain ratios to better explain, just to avoid confusion or try to.

E-revo

Motor pinion/spur
58/24
Tranny
33/20 x 20/18
Differential(s)
37/13
so we have all the gear tooth ratios so total would look like
(only 3 gears in the tranny)
58/24 : 33/20/18 : 37/13

now for the X : 1 part we get

2.42 : 1.65 : 1.11 : 2.85 : 1 is your gearing and for FDR just multiply (x : y : z) and toss a :1 on the end and its you FDR so for the revo we have a fdr of.....


12.632 : 1

Brians gearing calculator does all that plus it tells you the FDR.

To find the gear ration themselves for each diff I'd say either look on the packaing of the diffs or on the manufactures website or count the teeth out if you don't already know what the count is, hopefully that answers your question.


E-revo MMM 2200 6s zippy 50MPH of pure fun and parts destroying powa!
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TC5 top speed drifter 21mph on crappacks and 40 on calc

Last edited by NoControl; 07.14.2009 at 07:34 AM.
   
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