1969ca
Expert Class
Posts: 165
|
posted April 12, 2006 10:29 AM
where should i shift at
went to the dyno yesterday in az shift at peak torque of horsepower tq starts to drop at 10 and above hp drops at 12 tq75.9 and hp is 155.1 slip on and power comander k&n is that good or should i be looking for more thanks for any help
  
|
rac4it
Needs a job
Bergie
Posts: 3009
|
posted April 12, 2006 12:54 PM
You shift as close to the rev limiter as possible without tripping it.
|
BobC
Pro
Posts: 1736
|
posted April 20, 2006 03:35 AM
quote:
You shift as close to the rev limiter as possible without tripping it.
Assuming the motor drops about 1000rpm on an upchange, wouldn't it be better to shift 500 rpm past peak power? That would mean the engine is making most power most of the time.
____________
Candy Thunder Blue 2006 ZZR1400
Stock wheelbase
Max: 205.4 mph in 1.25 miles
2012 ZZR1400 in Golden Blazed Green
Brock CT Full System. etc
Max: 203.1 in 1 mile (so far)
|
CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
|
posted April 20, 2006 05:56 AM
What RAC4IT said, if you change gears before redline, watch how your MPH falls off !!!
____________
Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
|
salsa1
Needs a life
Posts: 5971
|
posted April 20, 2006 05:58 AM
 Edited By: salsa1 on 21 Apr 2006 08:20
I would look at your dyno sheet and shift 500 rpm past peak ,
Don't assume shifting close to rev limiter gives you best results; going far past peak power is counter productive.
Experiment a little so you can see for yourself what top speed and elapse time you get.
If your engine power band keeps making progressive power up to the rev limiter then yes; shift near that then. if not no.
____________
Salsa1
|
wannabe
Pro
Posts: 1931
|
posted April 20, 2006 11:27 AM
I think that Bergie was assuming that the guy was running a stock ZX-12. If this is the case, the shift point is as close to the rev limiter as possible without hitting it. A lot of us have drag raced the 12, and from experience, the best place to shift is right where we said.
|
your car is slow
Needs a job
Fuck Nitrous...Got Boost?
Posts: 4089
|
posted April 20, 2006 11:40 AM
I use the lever.
|
kcadby
Pro
Posts: 1733
|
posted April 22, 2006 01:13 PM
Edited By: kcadby on 22 Apr 2006 14:20
12s like/NEED to be rev-ed...
Do as stated above (by experienced 12 riders/RACERS)...
Shift as close to the limiter as possible...
12s go quicker/FASTER when the limiter is raised...
"assuming" 1,000rpm drop is WAY off...specially in the lower gears...
1st - 2nd = 25% less rpm!!!
2nd - 3rd = 21%
4th = 13%
5th = 10%
6th = 9%
11,600rpm in 1st = 8,718rpm in 2nd... 
11,600 in 5th...shift to 6th does = 1,007 drop though 
|
MadMike
Moderator
FEAR THE BLACK FLAG!!!!!!!!
Posts: 6579
|
posted April 22, 2006 05:48 PM
quote:
I use the lever.
Pussy!!!
speed shift that bitch!!
I use a button...
and I agree with the above! shift as close to limiter as you can get....
MM
____________
200-MPH CLUB MEMBER!
|
salsa1
Needs a life
Posts: 5971
|
posted April 23, 2006 07:04 PM
Guy is asking for his ZX-10R not a ZX-12R... notice the 75 ft-lbs torque he mentioned in his post...
nut vely good terminology or englich is confusing the issue....
____________
Salsa1
|
NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
|
posted May 08, 2006 06:26 AM
Has anyone used the extended rev limiter from muzzy with a stock motor with any gain? Or, would this hurt the motor.......???
____________
42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
Scorpion Helmets
Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
Mickey Thompson Tires
Catalyst Racing Composites
Conway Cycle
Syed Leathers
|
rac4it
Needs a job
Bergie
Posts: 3009
|
posted May 08, 2006 10:59 AM
Dave Owen extended the ECU on both of my 12s with good results
|
NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
|
posted May 08, 2006 02:01 PM
how much did you gain, and did you do it with a stock motor.............?
____________
42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
Scorpion Helmets
Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
Mickey Thompson Tires
Catalyst Racing Composites
Conway Cycle
Syed Leathers
|
|
|
HOME
NEW TOPIC