Birty Dastards Jeep Club
Tech Forum => Workshop => Topic started by: wildwood on December 03, 2010, 12:22:10 PM
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Just found another equation for gearing that came out of Crawl mag
Might be useful for those going up a size or 2 and who know their current ratios...........
Works like this and I'll use my own rig as example
I am going to a spit near 40" from a spit near 35" with current 4.56 ratio
40 divided by 35 x current ratio =
So 40 div by 35 = 1.142 x 4.56 =5.21
So picking nearest 'deeper gearing' means 5.38s thank you
Seems to work with other ration equations that are more complex..... hope it is of use :icon_twisted:
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I have bookmarked it for a day when i get that far :icon_winkle:
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hey that works
stock WG, 29" & 3.55 to 32" and 3.91
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Seems good, and I like the advice about going to next deepest - makes up for the added weight as well as increased diameter (to some extent).
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or you could use the Birtys Gearing Guide (http://www.birtydastards.com/frm/index.php?action=ezportal;sa=page;p=14) or the Tyre and Gear Calculator (http://www.birtydastards.com/frm/index.php?action=ezportal;sa=page;p=8) :003:
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But its wrong, certainly for my WG
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But its wrong, certainly for my WG
are you sure,
the calc says 29" & 3.55 to 32" gives 3.917
and the chart says for 32s between 3.73 for economy to 4.56 for power or 3.91, 4.11 or 4.27 for something in between