Beondwacko
Expert Class
Posts: 393
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posted March 05, 2009 04:55 AM
Second time at the track last night, strapped.
As the title says, I got the the drag strip last night for some test and tune running. This time though I had the front end strapped. I ened up running the following and was pretty happy yet frustrated at the same time.
1st Pass
10.11 @ 143.89mph / 6.70 @ 114 in the 1/8
2nd Pass
10.33@143.84mph / Wheel spin in second gear. Poop run.
3rd Pass
10.11 @144.67 / 6.71 @115.6 mph in the 1/8
3rd Pass
10.06 @144.5mph / 6.67 @115.3 in the 1/8
4th Pass
10.01 @ 145.44 mph / 6.64 @ 116.26 mph!!! in the 1/8
5th pass
10.24
Wheelie pass
Both of my 10.11 passed had wheelspin bigtime in second gear. I found out that if I shift 1st to 2nd at about 9K rpm , instead of near redline(10,700) that the rpm drop doesn't put the engine at the torque peak. That results in less wheelies and broken traction.
Friggin' 10.01
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08' Atomic Silver, PCIII, Brocks pipe,BMC, -1, strapped front end
  
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pazx14rider
Zone Head
Posts: 953
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posted March 05, 2009 05:06 AM
What did your 60fts look like?
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BobC
Pro
Posts: 1736
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posted March 05, 2009 05:11 AM
I found it better to shift just before the engine rev limiter and control things with the throttle.
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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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Beondwacko
Expert Class
Posts: 393
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posted March 05, 2009 05:26 AM
quote:
What did your 60fts look like?
My 60' were like this.
1.75
1.86
1.80
1.73
1.76
1.86
Not so great. Launching at about 3.5K rpm. I still need some practice on this bike. I'd be happy with some mid 1.6's but I don't think what I have left for a tire will hold that.
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08' Atomic Silver, PCIII, Brocks pipe,BMC, -1, strapped front end
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madkawboy
Expert Class
Posts: 398
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posted March 05, 2009 06:10 AM
What were your RPM's when you are leaving the line?
9.90's are coming !
Good job !
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2007 ZX-14
Stock Wheel Base, footshifting, pump gas
5.94 @ 128 mph
1.50 60ft
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smokehouse4444
Zone Head
XX to ZX
Posts: 648
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posted March 05, 2009 06:21 AM
Beond, how much do you weigh, if you don't mind me asking? It's amazing to me to see how much weight can play apart. My best time slip from last night (although unintentionally lugging it at the launch with new tires):
.0730
1.712
4.508
6.699
111.98
8.901
10.222
138.88
Man, check out the difference in the mph for us. There was some pretty good side wind going, but I don't think it would make that much difference.
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2008 Atomic Silver ZX-14, Brock's this and that, some other stuff, 260 in full gear, powered by Cheese
2005 Ducati 999 with all the goodies
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smokehouse4444
Zone Head
XX to ZX
Posts: 648
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posted March 05, 2009 06:22 AM
By the way, I bet you could RREEAALLYY tell the difference with the front strapped!
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2008 Atomic Silver ZX-14, Brock's this and that, some other stuff, 260 in full gear, powered by Cheese
2005 Ducati 999 with all the goodies
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Bawls
Needs a job
re-learning to ride
Posts: 2701
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posted March 05, 2009 06:25 AM
remember, he said before that his track is at sea level... you'd be surprised how big of a difference that makes. Altitude kills HP... HP= MPH!
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Best 60ft: 1.42
Best 1/8th: 5.97
Best 1/8th MPH: 119
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pazx14rider
Zone Head
Posts: 953
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posted March 05, 2009 06:28 AM
quote:
Beond, how much do you weigh, if you don't mind me asking? It's amazing to me to see how much weight can play apart. My best time slip from last night (although unintentionally lugging it at the launch with new tires):
.0730
1.712
4.508
6.699
111.98
8.901
10.222
138.88
Man, check out the difference in the mph for us. There was some pretty good side wind going, but I don't think it would make that much difference.
Smoke, your mph seems to be really low are you sure your not having some clutch problems? When i was running last season...brocks , flies out, and a strap no gearing change i was mph at 148. Does if fell like its slipping?
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smokehouse4444
Zone Head
XX to ZX
Posts: 648
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posted March 05, 2009 06:30 AM
What's happenin' Bawls? How's the bitchfest going with the idiot on the other thread? lol. Yeah, Beond actually wrote me on another thread and I didn't see it. He said he weighs around 205-210 unsuited. I weigh about 230 unsuited. I'll have to check what the altitude is here in Austin. I'm ashamed to say I don't know. Beond, I think you did rather well. I agree with madkaw, you're going to be seeing 9's real soon. You bastard 
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2008 Atomic Silver ZX-14, Brock's this and that, some other stuff, 260 in full gear, powered by Cheese
2005 Ducati 999 with all the goodies
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pazx14rider
Zone Head
Posts: 953
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posted March 05, 2009 06:31 AM
quote:
remember, he said before that his track is at sea level... you'd be surprised how big of a difference that makes. Altitude kills HP... HP= MPH!
But that big of a difference Bawls? i could see maybe 3 or 4 mph? What mph are you trapping Bawls? you run 1/8 mile though right?
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smokehouse4444
Zone Head
XX to ZX
Posts: 648
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posted March 05, 2009 06:33 AM
Actually paz, I think that it might. It certainly doesn't feel as crisp as it did early on, but it's on the big end that it seems to not be quite the same. Sorry Beond, not meaning to thread jack. I'll change threads if need be.
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2008 Atomic Silver ZX-14, Brock's this and that, some other stuff, 260 in full gear, powered by Cheese
2005 Ducati 999 with all the goodies
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Bawls
Needs a job
re-learning to ride
Posts: 2701
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posted March 05, 2009 06:43 AM
 Edited By: Bawls on 5 Mar 2009 14:44
there are two tracks here in san diego. One has realy good air at sea level and the one that I frequent is up in the mountains with terrible air where the DA is normally 4-5000 ft and I've seen it as high as 6000. I ran the two tracks in two nights. Sea level friday and mountains saturday and My bike ran damn near 4 tenths of a second and 6mph slower up in the mountains with the 60fts being the same.
Here's another example. two trips ago i still had the stock pipes, no pc3, and a 16t on and went a 6.41@113 on a 1.58 60ft and a fastest mph of 115.6 that day with the DA being 3000ft. I added a brocks pipe, and PC3 and all that I could get my bike to trap was 116 mph because the DA was 6000ft.
Weather means a lot more than you might think. That's why magazines always correct to sea level. I don't agree with it, but they feel that it makes things more even. There's a correction chart at http://www.greatlakesdragaway.com/correctionfactors.html but I don't know how accurate it is.
____________
Best 60ft: 1.42
Best 1/8th: 5.97
Best 1/8th MPH: 119
Brockland Police Badge # 001
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Beondwacko
Expert Class
Posts: 393
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posted March 05, 2009 06:45 AM
Edited By: Beondwacko on 5 Mar 2009 14:46
Smoke, let the threads wander where ever they may, It's cool with me.
Yeah, the strap was worth .3 last night. Same as my XX but I don'tthink I was riding the potential out of the 14. I was launching at 3.5K rpm on most runs. I think I may have flashed over 4K on one run and that just ended up as a first/second gear wheelie. Weird...... I used to launch the Bird' at 6-6.5K rpm. Big difference between bikes I suppose. I know I could hit the 9's, I just need a little more practice, possibly air down the rear tire a little, set the rear shock correctly, and possibly go back to the 17T front sprocket. 145 mph is a blink away from the rev limiter in 4th gear.
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08' Atomic Silver, PCIII, Brocks pipe,BMC, -1, strapped front end
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Bawls
Needs a job
re-learning to ride
Posts: 2701
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posted March 05, 2009 06:55 AM
if you're not spinning, then I wouldn't worry about letting air out of the tire. I had my bike pretty much wrung out with the stock exhaust, but now that I've got a pipe i'm having to re-learn to ride the damn thing. Give me a few trips to the track and I'm shooting for 6.20 at altitude!
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Best 60ft: 1.42
Best 1/8th: 5.97
Best 1/8th MPH: 119
Brockland Police Badge # 001
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01smokes
Needs a job
Posts: 2243
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posted March 05, 2009 11:24 AM
quote:
there are two tracks here in san diego. One has realy good air at sea level and the one that I frequent is up in the mountains with terrible air where the DA is normally 4-5000 ft and I've seen it as high as 6000. I ran the two tracks in two nights. Sea level friday and mountains saturday and My bike ran damn near 4 tenths of a second and 6mph slower up in the mountains with the 60fts being the same.
Here's another example. two trips ago i still had the stock pipes, no pc3, and a 16t on and went a 6.41@113 on a 1.58 60ft and a fastest mph of 115.6 that day with the DA being 3000ft. I added a brocks pipe, and PC3 and all that I could get my bike to trap was 116 mph because the DA was 6000ft.
Weather means a lot more than you might think. That's why magazines always correct to sea level. I don't agree with it, but they feel that it makes things more even. There's a correction chart at http://www.greatlakesdragaway.com/correctionfactors.html but I don't know how accurate it is.
Going off of that chart my ET would be 9.10 and MPH would be 152.7, dang i wish i lived at sea level
____________
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Email, artvgl@yahoo.com
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Beondwacko
Expert Class
Posts: 393
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posted March 05, 2009 01:38 PM
Edited By: Beondwacko on 5 Mar 2009 22:02
I keep on seeing that over and over. "I wish I lived at sea level".
The way I see it is kinda like this, like in the game of golf, you are allowed handicaps. My handicap is that I should be faster than I am, so instead, I live at sea level to help even out the playing field.
Actually, I wish I was more of a wrencher. I just don't have the patience anymore. I tend to like things simple and maintenence free. I will be experimenting with small things like shock settings, shift RPM's, and even oils but I'll let you hardcore guys do the harder work. It's a hobby to some of us, not so much an obsession.
Bawls, I did have a problem spinning the tire, but that was only on the 1-2 shift in second gear. Have you ever heard of such a thing,,,,, spinning on the shift? I know it's happening because I watched a couple of other bikes run and you could hear the tire screeching on some bike 1-2 and 2-3 shifts.
I was also just thinking about another thing. How many of us Ride our bikes to the track to race and then ride home? That's my deal. I could stuff the bike into the bak of my Tacoma, but we all know how much of a hassle that can be, so I just ride it the 27 miles from my house to the track. If I trucked it, I'd have tools on hand and I'd be better organized but being that I ride it, it limits me with what experimentation I can do at the track. I also race solo, meaning that I don't have a group of friends there who would be willing to be a mini pit crew or at least tool carriers.
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08' Atomic Silver, PCIII, Brocks pipe,BMC, -1, strapped front end
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icarus
Expert Class
Posts: 344
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posted March 05, 2009 02:42 PM
Do you have lowering links in the rear?
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8.820 @ 161.05
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Beondwacko
Expert Class
Posts: 393
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posted March 05, 2009 03:33 PM
quote:
Do you have lowering links in the rear?
Not yet.
Those will be in next month sometime. I'm going to play with the preload and compression damping at stock height first.
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08' Atomic Silver, PCIII, Brocks pipe,BMC, -1, strapped front end
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icarus
Expert Class
Posts: 344
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posted March 05, 2009 04:41 PM
Getting the back of the bike lower will make a greater difference than adjusting the shock.
You may need to upgrade the rear spring also.
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8.820 @ 161.05
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pazx14rider
Zone Head
Posts: 953
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posted March 05, 2009 05:07 PM
I spun alot also from the 1-2 shift with sock rear setup and a strap on the front, I think it comes from basically the rake effect on the bike the strap creates, correct me if im wrong here guys? when you pull that front strap down it takes less weight and pressure off the rear tire. I ran 18psi in the rear and it eliminated the spinning. and Im 175lbs, Track prep really helps with spinning also.
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1badzx12r
Needs a life
Posts: 8321
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posted March 05, 2009 05:22 PM
get rid of some air in the back tire ...15lbs tire pressure max
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http://www.youtube.com/watch?v=S06nIz4scvI
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Bawls
Needs a job
re-learning to ride
Posts: 2701
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posted March 05, 2009 06:04 PM
are you using the clutch? if you're clutch shifting then that's probably what's making you spin. I've had some problems with the 1-2 shift even shifting without the clutch, but i got out of the groove on those runs.
____________
Best 60ft: 1.42
Best 1/8th: 5.97
Best 1/8th MPH: 119
Brockland Police Badge # 001
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Beondwacko
Expert Class
Posts: 393
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posted March 05, 2009 07:26 PM
Yep, I'm clutch shifting. That's why on the 10.01 run I short shifted the 1-2 shift at 9K rpm and didn't slam the shift into second gear. Little if any spin in second, but a wheelie in second non the less. This shit is Fun !
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08' Atomic Silver, PCIII, Brocks pipe,BMC, -1, strapped front end
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smokehouse4444
Zone Head
XX to ZX
Posts: 648
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posted March 06, 2009 08:12 AM
You're damn skippy this shit is fun! I don't know, I wonder about track prep if there is that much spin on down the track. I can only remember one really bad night that I was getting spin from 1-2 and 2-3. Normally my front comes up a bit on each of the shifts, even the 3-4. I just blip the clutch when shifting.
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2008 Atomic Silver ZX-14, Brock's this and that, some other stuff, 260 in full gear, powered by Cheese
2005 Ducati 999 with all the goodies
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