18-43,effect on speedo
- Thread starter chevelle
- Start date
i wondered the same thing. the 42T sprocket in the rear shortened the wheelbase on my bike about 7/16". I was pleasantly surprised that the difference was so large, as that was my goal. I never thought about adding one in thhe front as well, which would help correct the speedo error, although it would also take away that extra oomph down low that has become rather addicting
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the reason for the change is nitrous,i have just about finnished the install of my a&j dry shot and controller (a couple of ferrils and it will be complete) i think the larger sprockets and new ek zzz chain will deal with the 60 shot a little better,spreading the load out so to speak,i will add a few links so the w/b should remain about what it was,i am 1.75'' over stock
I ran Big Red Boosted with 16/42... for a very while
Currently running 18/45.
Depending on the bike's purpose, IMHO, you could fluxuate from 16 - 18 in the front and 38 - 48 in the rear.
18/43 is almost the same as 17/40
2.35 vs 2.38 which means your speedo will be off aobout 8 percent.
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