HOME ARTICLES JOIN GALLERY STORE SPONSORS MARKETPLACE CONTACT US  
Register | FAQ | Search | Memberlist
Username:    Password:       Forgot your password?
BIKELAND > FORUMS > ZX12R ZONE.com > Thread: Gear ratio, 1 mile gearing with 190/55r17 NEW TOPIC NEW POLL POST REPLY
RobertMcBeth


Novice Class
Posts: 47
posted May 05, 2018 02:53 AM        
Gear ratio, 1 mile gearing with 190/55r17

I know alot of people have run 18/44 for 1 mile runs

Wondering with a flashed ecu and rev limit on 12,100, would there be an avantage to running 18/46 or 18/45 and being able to pull to rev limit and stil run 200

2002 12r flashed, springs, head porting, serdi valve job, full muzzy stepped header stainless exhaust (made by hindle from what i read, vs the earlier muzzy stuff idk) no base gasket to bump compression, adjustable timing gears (have to assemble engine still, dont know what timing numbers will be, depends on ptv) zx14r injectors, pc5, bmc race filters, block off plates, bear stacks etc. etc.

Going to run a 190/55r17 rear, so 17/44 (2.59) would put me effectively close to stock 18/46 (2.56) with a 200/50r17

Would also give the ability to go 17/43 or possibly 17/42 on stock length chain if i needed higher gear ratio,

17/44.with a 190/55 being effectively the same as 18/45 with a 200/55
17/43 with a 190/55 being effectivley the same as 18/44 with a 200/55

Hope some of u 1 mile guys can chime in as im about to order new chain and sprockets



  Ignore this member   
KZScott


Needs a life
high on speed
Posts: 7232
posted May 05, 2018 11:35 PM        
best advice i can give is to take several sprockets with you for a 1 mile race and change them based on how you do with the current weather conditions.
if your 12 is making good power past the stock rev limit like most do and you can spin it higher, then your gearing can obviously be lower and you will have better acceleration.
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos

  Ignore this member   
RobertMcBeth


Novice Class
Posts: 47
posted May 06, 2018 01:30 AM        Edited By: RobertMcBeth on 6 May 2018 08:31
Thank you kz scott, guess ill try 17/43 first and go from there, middle ground i can go up or down from there
  Ignore this member   
shiphteey


Needs a job
Posts: 2520
posted May 08, 2018 11:59 PM        
Different tires also GROW different amounts, thus changing total diameter.

You can calculate all you want the the weather and wind wins every time.

After your first couple stints you will see you need to bring several sprockets.

Take a 17 and 18 front, and some rears like 43-46.

Record/log what RPM you are trapping in 6th and then change gearing as needed....

Hopefully the wind won't mess you up between gearing changes ... she is a fickle bitch.

A.
____________
Gemini Motorcycles

Topping out everything from Ninja 250s to nitrous ZX-14s.

  Ignore this member   
All times are America/Va < Previous Thread     Next Thread >
Quick Reply:

Email Notification: Send all replies to your email address.
BIKELAND > FORUMS > ZX12R ZONE.com > Thread: Gear ratio, 1 mile gearing with 190/55r17 NEW TOPIC NEW POLL POST REPLY

FEATURED NEWS   Bikeland News RSS Feed

HEADLINES   Bikeland News RSS Feed


Copyright 2000-2015 Bikeland Media
Please refer to our terms of service for further information
0.26476502418518 seconds processing time