Another sprocket question - Page 2

I went -1/+4 and wow....this bike is awesome. 1 and 2 are no problem for coming up and third gets real light on the front. It turned this bike into a new beast. About the gas mileage I get 185 miles a tank.

quote:

ORIGINAL: 600f4ika

I went -1/+4 and wow....this bike is awesome. 1 and 2 are no problem for coming up and third gets real light on the front. It turned this bike into a new beast. About the gas mileage I get 185 miles a tank.

Is the F4i the same 4.8 gallons (something like that)???

if so...that is way higher than I heard anyone say they get...wow...especially geared down that much

I barely get 100 miles on -1/+2, so my guess is that he did not recalibrate his speedo/odo and it is reading high.

Not only would his speedo read much faster than he is actually going, but his odomoter will rack up mileage 20% faster than it should, which would account for why he thinks he is getting 185 miles on a radically regeard bike.

Nicely put and thought out. I didn't think about it effecting the odometer reading just the speedometer. I'll have to go back and recalibrate it.

You can use the online tool found on this page to calculate how much you are off based on the gear change:

http://www.speedohealer.com/eng/adjust.htm

Basically, you are off by almost 20%.

So when you drive 100 miles, your odomoter will read 120. When you drive 150, it will read 180, etc...

I just went with the vortex -1/+2 520 conversion and all i can say is WOW! Totally different bike than stock. Wheelies under it's own power (no rollon-off-on throttle jockeying like before), Stand-ups in 2nd at 45 instead of 70, stand-ups in 3rd cake too. Wouldn't go back for the world. Haven't had a chance to go for distance yet, i'm sure i lost some mpg's, but at $7 a tank, who cares? lol

Better than $33/tank at 14/mpg in my jeep. :P

-Adam

yo mang...if you so into stunting you shouldn't go with the 520...
also all that increase in torque is from the -1 +2 and not from the decreased weight.

quote:

ORIGINAL: Tahoe SC

yo mang...if you so into stunting you shouldn't go with the 520...
also all that increase in torque is from the -1 +2 and not from the decreased weight.

+1 on the 520...usually only done for track guys...you want a 525 or even 530 for the extra strength

congrats though the on the diff...love my gearing mods as well!!

yea mang...i just swapped mines from 525...about the same gearing...had -1 before, now with stock front and +3 rear.
if i was going to use this strictly for commuting...i'd be pissed because i can hardly tell the difference between now and before...luck for me, it's going to be weekend canyon warrior and track day bike.

Yeah i know the torque is from the gearing, not the less chain weight. Went with the 520 for a couple of reasons, mainly because it was what came with the kit i bought and was the right price. I personally don't think that i'm gonna notice a significant enough chain wear difference to say i shouldn't have gone with the 520. Guess we'll see though.

Tahoe, i'm not surprised that you can't tell much of a difference between the -1 you had before and the +3 you have now, since they're relatively the same gearing....however, throw that -1 on WITH the +3 and then come back and tell us what you think....

no mang...those are stunna gearing hahhhahah....
i know what -1/+3 will do...put me flat on mah back!

So then our speedo is read off of the transmission right? Not to sound like an idiot, I just wasn't sure in the first place. Also, how long back does that stand? I mean, would say a 95 of any make have a wheel mounted speedo, or just the tranny? Thanks

Most modern bikes measure it from the trasnmission or the crank. You alter the gearing after that point and so you radically change the actual speed of the bike, and so now the reading from the crank is way off because it has no way of knowing or reflecting whatever changes you made to the sprockets.

got ya! thanks Squire. The only reason I asked is I thought mine was, but wasn't positive. And, my buddy has a 95 Kawi Zx7 and he just got a sprocket conversion on his and he said his speedo seems normal. Thanks tho!

Well, you can do a conversion from 530 or 525 to 520, but keep the stock gear *ratio* and your speedo will be fine.

It's when you change the number of teeth that it throws things off.