JSmooth
Expert Class
Posts: 169
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posted September 22, 2010 11:56 AM
Serious Question about my top end
A buddy of mine has his bike geared at 16/43. He is complaining about topping out at 175hp's. Is there anything more he can do to get more top end or will he have to go back to a 17/41? Right now he has a full Brock AH, PCV, BMC AF, Speedohealer, Lowered 1.75 and stretched 6" bike is mapped to Brock's Maps. My suggestion was to go back to the 17/41? He likes how the bike pulls but tops out early. He doesn't do track yet and rides on the street mostly.
  
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BLK ICE
Pro
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Posts: 1709
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posted September 22, 2010 12:11 PM
Check this site out.
http://www.gearingcommander.com/
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Shane661
Needs a life
Posts: 11494
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posted September 22, 2010 12:49 PM
16/42 or 16/41, depending on how much more top end he wants.
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JSmooth
Expert Class
Posts: 169
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posted September 22, 2010 01:22 PM
 Edited By: JSmooth on 22 Sep 2010 21:22
quote:
Check this site out.
http://www.gearingcommander.com/
Trying to reach 195-200 mph Thanks Shane & BLK ICE
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Shane661
Needs a life
Posts: 11494
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posted September 22, 2010 01:49 PM
195-200 mph will take 17/41. In fact, I think most who have broken 200 mph have actually used 17/40. You need to take about 3% off of the speeds listed by Gearing Commander, and you need to measure the circumference of your rear tire.
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zxbob
Pro
Posts: 1692
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posted September 22, 2010 03:29 PM
With my turbo bike I was running 18/40 on the gearing - and pulling like a freight train !
Bob
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Good parts aint cheap and cheap parts aint good !
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epd345
Pro
Posts: 1494
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posted September 22, 2010 07:19 PM
Bob sometimes Turbo's "aid" in the freight train affect!
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2012 ZX14, Ceramic Coated Brock's CT Meg, PCV, throttlemeister
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BobC
Pro
Posts: 1736
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posted September 23, 2010 03:38 AM
Edited By: BobC on 23 Sep 2010 11:47
It depends why your buddy runs lowered gearing, you say he doesn't sprint the bike? The stretched specification suggests it's set up for sprinting. It will still top 180mph with 16/43. If he seriously wants to top 200 he's geared too low. Also LSR riders tend to run a stock wheelbase to get more weight over the rear end. He will get lots of slippage at the top end running 6 inches over.
I was running 17/40 on my 14 (like Shane661 said) and got it into the "nines" over the quarter and exceeded 200 in LSR. See below.
BLK ICE is right, your buddy needs to have a look at gearing commander and make some choices.
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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)
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blackbullet76
Pro
Posts: 1134
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posted September 23, 2010 07:26 AM
Isn't there a way to change the redline?
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2007 ZX-14 black
Brocks s-meg exhaust
PCIII w/track map
BMC race filter
Flies removed
16 tooth front sprocket
Speedohealer
APE cam chain tensioner
Vortex rearsets
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Beondwacko
Expert Class
Posts: 393
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posted September 24, 2010 05:51 PM
Edited By: Beondwacko on 25 Sep 2010 01:52
quote:
Isn't there a way to change the redline?
There is a device called a rev-extender that from what I've been told will give you another 500 rpm but I have no idea how a stock headed 14 would benefit from that.
Ya' know,,,,,,,,, that reminds me of something. My bike geared at 16/41 GPS'd at 169.2 on the limiter. Doesn't that sound slow?
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08' Atomic Silver, PCIII, Brocks pipe,BMC, -1, strapped front end
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Shane661
Needs a life
Posts: 11494
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posted September 25, 2010 03:53 AM
quote:
Ya' know,,,,,,,,, that reminds me of something. My bike geared at 16/41 GPS'd at 169.2 on the limiter. Doesn't that sound slow?
Sounds like you were in 5th gear.
Unless your clutch was slipping very badly, there is no way that could be accurate in 6th.
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