29Dreamsracing.com FZR400 Gearing Notes
Date Track Event Front Sprocket Rear Sprocket Gearing Ratio Chain Limit Comments
9/5/05 Barber Track Day 15 46 3.07 Worked well
10/11/05 Road Atlanta WERA GNF 16 44 2.75 Good gearing - almost top out 6th - almost too short of chain - 104 Links
11/12/05 TGPR - CW Track Day 15 46 3.07 Good chain length (middle)
12/1/06 ***** New Chain ***** New 106 link chain
2/11/06 TGPR - CW WERA 15 46 3.07 Running against revlimter coming out of double 90's
2/11/06 TGPR - CW WERA 15 45 3.00 X Good gearing - chain adjuster was all the way back - might try 16/47 next time
3/18/06 RRR WERA 16 45 2.81 Baseline for Roebling - might try 16/46
4/29/06 Nashville WERA 16 44 2.75 OK, but wet, chain almost too long
5/6/06 Barber WERA 15 46 3.07 Perfect
6/3/06 TGPR Track Day 15 46 3.07 Good, but going CCW might need a little lower for coming out of the double 90's
6/17/06 TGPR - CCW WERA 15 46 3.07 Good, but might even try 45.  I was hitting revlimiter at end of front straight.  45 might allow a downshift going into the double 90's
7/1/06 Road Atlanta WERA 16 44 2.75 WILL NOT FIT - CHAIN TOO LONG - chain has stretched!!
7/1/06 Road Atlanta WERA 16 45 2.81 X Will try to get by - ordered chain
7/1/06 Road Atlanta WERA 17 47 2.76 Worked well - middle of chain adjuster
8/5/06 Jennings GP WERA  16 47 2.94 Worked OK
9/21/06 Mid Ohio AMA Sports 16 47 2.94 On Revlimter on back straight
9/22/06 Mid Ohio AMA Sports 16 45 2.81 X Need a few more revs coming onto back straight and out of turn 7
9/23/06 Mid Ohio AMA Sports 16 46 2.88 Ideal
10/12/06 Road Atlanta WERA 17 47 2.76 Blew up motor
2/10/07 NEW TGPR - CCW WERA 15 46 3.07 Worked OK - barely use 6th gear
7/28/07 Barber Track Day 17 47 2.76 NOT very good gearing
8/4/07 Road Atlanta Track Day 17 47 2.76 Worked great
9/8/07 TGPR Track Day 15 46 3.07 using Barber gearing
9/15/07 Barber WERA 15 46 3.07
Inventory Inventory 
Front Rear Order
14 Drilled 40 A
15 Not Drilled Britton
15 Drilled 42 A & B
16 Drilled 43 A 48
16 Drilled 44 A & 2B 49
17 Drilled 45 A
46 2B
47 A
Vortex
Rear #611 40-54 Available
Front #3270 14-18 Available
Work with
Front Rear Ratio 106 Length Chain ?
14 40 2.86 NO
14 41 2.93 NO
14 42 3.00 NO
14 43 3.07 NO
14 44 3.14 NO
14 45 3.21 NO
14 46 3.29 NO
14 47 3.36 ?
15 40 2.67 NO
15 41 2.73 NO
15 42 2.80 NO
15 43 2.87 NO
15 44 2.93 NO
15 45 3.00 YES YES - BARELY - on the rear stop
15 46 3.07 YES
15 47 3.13 YES
16 40 2.50 NO
16 41 2.56 NO
16 42 2.63 NO
16 43 2.69 NO
16 44 2.75 NO Road Atlanta 104 Links - chain too short
16 45 2.81 ? YES - GOOD FIT - 5 turns from rear stop
16 46 2.88 YES
16 47 2.94 YES
16 48 3.00 YES
16 49 3.06 ?
16 50 3.13 ?
17 40 2.35 NO
17 41 2.41 NO
17 42 2.47 NO
17 43 2.53 YES
17 44 2.59 YES
17 45 2.65 YES
17 46 2.71 YES
17 47 2.76 YES
17 48 2.82 YES
17 49 2.88 YES
17 50 2.94 ?
17 51 3.00 ?
Road Atlanta 17/47 - 6th gear into turn 9, 2nd gear into 10a, 3rd gear out of 10b, 4th gear topping hill, 3rd gear into turn 1,
2nd gear into chicane, 3rd gear out of chicane, 4th gear down the hill, 3rd gear into turn 5, 4th gear topping hill, 3rd gear into turn 6,
2nd gear into turn 7, 6th gear into turn 9.  With 17/46 might not be on revlimiter on end of front straight