Sprocket change - mph higher or lower?

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Sprocket change - mph higher or lower?

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CBR >> Past CBR Models >> CBR 954RR >> Sprocket change - mph higher or lower?

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Sprocket change - mph higher or lower? - 8/19/2008 7:42:50 PM

95Cbr6

Posts: 152
Joined: 10/23/2007
Status: offline

ok, it''s time for new sprockets and chain on the ''54. I plan on doing a +2 in the rear, or maybe even a -1/+2 setup with a 520 chain. I''ve heard bad things about Vortex sprockets so i think i''m gonna go with the RK 520 Chain and AFAM sprockets. Is this a good setup?

Also, i was wondering about my speedometer, i know it''s going to be inaccurate but my question is will it read higher or lower than my actual speed after the sprocket change?

for example, if i''m actually doing 50 by gps will my speedo read around 40 or 60?

Also, what kind of percentage in an inaccuracy can i expect after the conversion? 10%? 20%?

Thanks in advance guys!

Post #: 1

RE: Sprocket change - mph higher or lower? - 8/19/2008 9:03:25 PM

TK954RR

Posts: 4900
Joined: 12/3/2006
From: Green Bay WI
Status: offline

RK is an ok chain, afam is also decent sprocket.
It will read higher, 50 on gps will be 60 on the speedo
If i recall correctly with a -1+2 it will be around 13%. You could get a speedo healer tho.

In case you may ask i use Driven chains and sprockets. They cost a bit more but you get what you pay for

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Haven''t you ever heard the phrase *The customer is always right?* Let me fill you in on a little secret, okay. THE CUSTOMER IS ALWAYS AN ASSHOLE!

(in reply to 95Cbr6)

Post #: 2

RE: Sprocket change - mph higher or lower? - 8/20/2008 5:22:02 PM

Diablo Runner

Posts: 139
Joined: 8/10/2007
From: Murray, KY
Status: offline

^^^
dido ... i have always run RK chains and Vortex sprockets. I have never had a problem. Personally, I have always thought they are the best looking set-up as well.

BUT THAT"S JUST ME AND MINE

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Two Brothers slip-on exhaust, Pirelli Diablo Strada Tires, Galfer SS brake lines, EBC HH brakes, Vortex 15T/45T sprockets, RK GB520GXW chain, Zero Gravity DB windscreen, Hotbodies undertail, Hotbodies tire hugger, ICON Battlecry Graphics

(in reply to TK954RR)

Post #: 3

RE: Sprocket change - mph higher or lower? - 8/20/2008 7:29:05 PM

TK954RR

Posts: 4900
Joined: 12/3/2006
From: Green Bay WI
Status: offline

Yea i have heard a few bad things about Vortex, but honestly it seems like its from guys who dont take care it. Cleaning, lubing, proper adjustment, etc.

_____________________________

Haven''t you ever heard the phrase *The customer is always right?* Let me fill you in on a little secret, okay. THE CUSTOMER IS ALWAYS AN ASSHOLE!

(in reply to Diablo Runner)

Post #: 4

RE: Sprocket change - mph higher or lower? - 8/21/2008 4:44:17 PM

Nealio240z

Posts: 167
Joined: 5/12/2008
Status: offline

I run the 15t, 45t set up in vortex sprockets and RK 520 chain- never had a problem. Just maintainance them and yer fine... BTW the -1/+2 gives you a perfect 1-3 ratio, which is the perfect combo track and street. Trust me it RIPS.

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It takes many screws to build a crib, but only one to fill it...

(in reply to TK954RR)

Post #: 5