Peter_D
Parking Attendant
Posts: 10
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posted October 12, 2006 07:29 AM
'05 ZX 12 stock rev limit
What is the stock rev limit?
I have a customer with a '05 ZX 12 in his race car and is hitting a rev limiter at 10,500.
Thanks Peter D
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Peter D
   
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tuusinii
Pro
Posts: 1031
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posted October 12, 2006 08:14 AM
Is that on 6th when he's bumbing the top speed limiter?
Otherwice it should be further away...
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shiphteey
Needs a job
Posts: 2529
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posted October 12, 2006 01:46 PM
Also, as of now, for some reason the 05s still are not responding to the deristriction that the other years are.
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zx12mark
Pro
Posts: 1654
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posted October 12, 2006 04:53 PM
12,200 rpm's till 6th gear .if not by passed 186 mph in 6th.
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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted October 13, 2006 04:24 AM
The 2000 12r's rev limiter kicks in at 11,625 rpm exactly.
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Y2KZX12R
CompetitionCNC.com
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zx12mark
Pro
Posts: 1654
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posted October 13, 2006 06:24 PM
not on the tach on the bike.
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ridgeracer
Pro
Posts: 1309
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posted October 14, 2006 04:54 PM
 Edited By: ridgeracer on 14 Oct 2006 17:55
The ZX-12r has a 186 mph top speed restriction that limits the bike in 6th gear before engine redline.
The speedo signal pulses off the teeth of a transmission gear. In 6th gear the bike is actually limiting the output shaft RPM. On a stock bike with stock tires and stock final gearing going 186mph the output shaft revs are 6520.
Running that through the 6th gear ratio of 1.03 and the primary ration of 1.60 works out to a Crank RPM of 10,744.
In other words the ECU will not let the engine exceed 10,744 in 6th gear
That is pretty close to your observed 10,500.
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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted October 15, 2006 03:40 AM
quote:
not on the tach on the bike.
Thats on the dyno using a real tach.
The 2000's have no speed restriction in any gear so in all gears the engine revs to 11,625.
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psycho1122
Pro
Posts: 1608
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posted October 15, 2006 04:01 AM
Correct Y2K, I observed a Tach that was 700-800 rpm optimistic on the dyno with my 2000.
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You say PSYCHO like it's a BAD thing!!
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Peter_D
Parking Attendant
Posts: 10
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posted October 19, 2006 06:23 AM
Thanks guys. Your help is appreciated!!!
Peter D
www.peterdmotorsports.com
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Peter D
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