16/42 gears = low trap speeds

[Mr Brown]

That 130 pounds must really help.[/QUOTE]
Gee, ya think?
I have been attempting to run almost to the rev limiter in each gear since the stock engined bike seems to go fastest doing this. It appears that you concur with that approach. [/QUOTE]
I hit the shifter when the needle hits 11 grand, prolly about 10.5 by the time it shifts.

 

[Tetge]

That 130 pounds must really help.

Gee, ya think?
I have been attempting to run almost to the rev limiter in each gear since the stock engined bike seems to go fastest doing this.  It appears that you concur with that approach. [/QUOTE]
I hit the shifter when the needle hits 11 grand, prolly about 10.5 by the time it shifts.[/QUOTE]
How much faster would I go if I lost 30 pounds? In the average car they are saying 1/10th for every 100 pounds but it should be different than that for the Busa.

I am shifting somewhere just above 11000 indicated on the tach. Wonderful how optimistic the tach is on the Busa. It hits the rev limiter at an indicated 11200-11300 which makes it reading around 500 RPM fast at those speeds. You would think that with a rev limiter, they would give the bike an accurate tach. So I am revving 10500-10600 or so in each gear.

 

[Brakelate]

I would experiment "short-shifting" it, especially in the lower gears. It would allow you more time at WOT, and to possibly avoid some of the wheelies until you really felt comfortable "floating" the front end down there a good ways.

 

[Tetge]

I would experiment "short-shifting" it, especially in the lower gears.  It would allow you more time at WOT, and to possibly avoid some of the wheelies until you really felt comfortable "floating" the front end down there a good ways.

Of course, when conventional wisdom from the experienced Busa riders has recommended shifting as close to the rev limiter as possible, I am sure that you would love to see me shift at 5000 RPM, eh, ZX-12R loser boy? I already have short shifted a few times and, as best as I can tell, it hurt the ET. I also attempt to start in second and that was a disaster. I just need to man up and launch the sucker and you are toast from the coast. But, wait, even as weak as I am, you are already toast from the coast.
BTW: I hear that short shifting the ZX-12R really works wonders. You should try it next time we are "racing".

 

[Brakelate]

Racing? I was just riding along, with you trying to keep up!

 

[vicxx11]

I have been running 17/41 gears and doing 1.9 and 1.8 60' times and high 10's at 130-132 mph at LACR.  With 17/41 I go through the traps almost at the rev limiter in 3rd.  Last night put the 16/42 gears back on the bike that I tried before and ruled out as too wheelie prone.  I did the math and figured that 3rd would approach 123 MPH so I could shift to 4th and pick up another 9-10 MPH through the trap.  But, today I went to LACR and took a single pass because it was hot and crowded and I ran 10.985 @ 127.769 off of a 1.917 60' time. The 330' was 4.826.   I have recorded all my runs in Excel and the 10.985 off the 1.917 60' time was in line with other results but the 127.769 was way off the 131+ that I ran just two days previously.  It appears that the 16/42 gearing cost me 4 mph trap speeds and did not really help with the 1/4 at all.
I will go back and attempt some more runs before I return to the 17/41 gear that seems to be the best compromise so far, but, I was wondering if anyone had any light to shed on the drop in trap speeds at the same 60' time and 330' time as before with taller gears?
And, I do realize that both my 60' and 330' suck but, I was attempting to compare apples to apples and I still hit those split times frequently.

I believe for a stock busa 16/41 its the best,the first time i run down the strip my bike a few days ago(2nd time i ride my new bike stock k2 only 2 akrapovic slip on and 16/40 lowered 0.6inches at front )i ve managed 1.821 60 feet,10.211 with 146miles terminal speed,you must try it

 

[streaker00]

Tetge, it seems to me you need to quit spending so much time being a mathamtical(sp)geniuos and spend some more time @ the track. It's all about seat time!!!! I haven't been on here much due to my computer sh!t the bed and I haven't had it fixed yet. If you have any questions feel free to ask, I'm far from an expert but do alright at the track.
I just changed my gearing from 17/42 to 16/42. It seems to be helping get outta the gate better and improved my times. With the 17/42 I throughin 4 gears and with 16/42 I go through in 5. Hope this helps.

Jim

 

[Tetge]

Tetge, it seems to me you need to quit spending so much time being a mathamtical(sp)geniuos and spend some more time @ the track. It's all about seat time!!!! I haven't been on here much due to my computer sh!t the bed and I haven't had it fixed yet. If you have any questions feel free to ask, I'm far from an expert but do alright at the track.
I just changed my gearing from 17/42 to 16/42. It seems to be helping get outta the gate better and improved my times. With the 17/42 I throughin 4 gears and with 16/42 I go through in 5. Hope this helps.

Jim

My Busa has been to the track on 37 occasions since 07/08/05, shortly after I bought it new.  It has made 258 pulls down the 1/4. It has 2700 street miles on it so far.  Its main problem seems to be lack of top end pull. Over and over again I get to the 1/8th first versus other bikes like GSXR-1000's and ZX-10R's and Brakelate's ZX-12R and then they steam by me in the second 1/8th. They do 133+ to 140+ and I go 129-131.  I hit the 1/8th at 103-104 and they are doing 107-110.  I had the bike dyno'ed and it made 143 actual RWHP at 2710' on a 88 degree day.  The dyno's software corrected the HP to 160 SAE, which is in line with the SAE numbers of Busa's tested by the magazines.    
My riding weight all up with leathers is about 800 pounds. The Busa weighs right at 550 lbs on the drag strip scale. The GSXR-1000 and the  ZX-12R both weighed in at less than 400 pounds with fuel and the ZX-12R weighed in at 525 pounds.  All the riders are lighter than me too.  
So, I guess the combo of high altitude and bad DA; heavy all up curb weight and, untalented rider, have done me in.  I am almost curious enough to go on a diet.  And, if it were not so much work to get the center stand off the bike, I might even take the center stand off and put the rear under fairing back on.  But, the center stand is a real SOB to install.  Those springs are almost impossible to stretch into position.  And you have to drop the exhaust to get to the bolts.  
At least I can still rant.
BTW: A couple of weekends ago I took my daily driver, a 2003 Ford Mustang Cobra to Famoso drag strip up by Bakersfield and ran 11.508 @ 120.22 off a 1.619 60' time on 17" DOT radials. Then I drove it back home.  Full interior and all.  I have run better 60' times but that was a new personal best with the car.  It only manages 11.9's at LACR at 115-116, to give an example of how tough it is to go fast at LACR. So, I have been racing a long time and I am no newbie.



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[gnd111]

Tetge, it seems to me you need to quit spending so much time being a mathamtical(sp)geniuos and spend some more time @ the track. It's all about seat time!!!! I haven't been on here much due to my computer sh!t the bed and I haven't had it fixed yet. If you have any questions feel free to ask, I'm far from an expert but do alright at the track.
I just changed my gearing from 17/42 to 16/42. It seems to be helping get outta the gate better and improved my times. With the 17/42 I throughin 4 gears and with 16/42 I go through in 5. Hope this helps.

Jim

Are you running 5th to the end though? That is what you want for best ET's. Less aggressive gearing gets a little better MPH due to less shifts and lost momentum...

 

[Tetge]

Tetge, it seems to me you need to quit spending so much time being a mathamtical(sp)geniuos and spend some more time @ the track. It's all about seat time!!!! I haven't been on here much due to my computer sh!t the bed and I haven't had it fixed yet. If you have any questions feel free to ask, I'm far from an expert but do alright at the track.
I just changed my gearing from 17/42 to 16/42. It seems to be helping get outta the gate better and improved my times. With the 17/42 I throughin 4 gears and with 16/42 I go through in 5. Hope this helps.

Jim

Are you running 5th to the end though?  That is what you want for best ET's.  Less aggressive gearing gets a little better MPH due to less shifts and lost momentum...

I go through the traps in third. Yesterday I was hitting the rev limiter just as I crossed the finish line at 133+ (you are going faster than the slip says since the speed is the average over the final 60'of the strip). +1 on the rear sprocket is perfect gearing to go through in 3rd at LACR. My speedo healer reads 134.5 at the rev limiter in 3rd and my speedo is pretty accurate because it was calibrated by radar.

 

[gnd111]

Actually you aren't going faster unless yo hit a limiter or shift just before or during the last 60 feet.

And for drag racing you want to run to the top of 5th in the 1/4 for best ET. My 1397 (slow) is geared 17/44 and just shifts into 5th about the 1200ft mark.

When i was stock motor and 16/42 i would still run almost completely thru 4th in the 1/4...

 

[Black Dragon]

Sorry you just cant ride worth a ####. I go to LACR all the time I ride up from San Diego and run mid to high 9's all day. Its funny whatching you LA guy run high 10's low 11's on lowered streched out busa's. Why don't you put a real ridder on it next time your at the track and you should see 140+ mph and high 9's. And don't blame weight I'm 250 suited.

 

[gnd111]

Sorry you just cant ride worth a ####.  I go to LACR all the time I ride up from San Diego and run mid to high 9's all day.  Its funny whatching you LA guy run high 10's low 11's on lowered streched out busa's.  Why don't you put a real ridder on it next time your at the track and you should see 140+ mph and high 9's. And don't blame weight I'm 250 suited.

Black - you ain't running mid 140's with a 250lb body weight on a stock motor anywhere...

 

[Tetge]

Sorry you just cant ride worth a ####.  I go to LACR all the time I ride up from San Diego and run mid to high 9's all day.  Its funny whatching you LA guy run high 10's low 11's on lowered streched out busa's.  Why don't you put a real ridder on it next time your at the track and you should see 140+ mph and high 9's. And don't blame weight I'm 250 suited.

Bad call on your part. I am the wrong person to BS about LACR since I live at LACR and I hace raced cars there for years. I have only missed a couple of times that the track was open for racing since last July and you are definitely NOT at LACR all the time, or, actually, any of the time statistically. A lot of times I am the only bike there, or there may be only one other bike. And us bike racers know each other by now. You obviously do not go to LACR often.
That said, you may have run there. A few times a year the NMRA holds events at LACR and lots of drag racing bikes turn out. Of course they run slower at LACR with 2710' altitude and DA that goes up to 6000' in the hot months. But, they are mostly modded for drag racing. I have yet to see another basically stock Busa other than mine run at LACR.
Also, my bike is stock suspended and, in fact set up for riding curves, not drag racing. No stretched swing arm or strap or dog bones or anything. 37 psi in the front OEM tire and 35 in the rear OEM tire.
Of course, you are correct that I can not ride worth a damm but perhaps you mistook this forum for the smack shack since your comment is off topic and not at all useful from a serious point of view?

And, BTW, I could locate and scan my time slips from my visits with the dates on them:

07/08/05
07/13/05
07/15/05
07/27/05
07/29/05
07/30/05
08/03/05
08/05/05
08/10/05
08/12/05
08/13/05
08/17/05
08/24/05
08/26/05
08/31/05
09/02/05
09/04/05
09/07/05
09/14/05
09/16/05
09/21/05
09/23/05
09/28/05
09/30/05
10/02/05
10/05/05
10/07/05
10/12/05
10/19/05
10/21/05
10/26/05
10/28/05
10/29/05
11/02/05
11/04/05
11/09/05
11/11/05
11/12/05
11/16/05
11/18/05
11/25/05
11/27/05

 

[Brakelate]

 I go to LACR all the time I ride up from San Diego and run mid to high 9's all day.  

Who is this guy? I've never seen him there either, even when attending the big bike events.

What kind of total BS is this? You ride what would essentially have to be a bike capable of running 9 flat anywhere else, the two and a half hours up to LACR, then weighing 250 lbs + kick ass all day long? WITH a stock motor?

Sorry pal, not buying it. Problem appears to be, that you can't lie worth a ####!

 

[Tetge]

We can add 11/30/05 to my list of times I went to LACR. I managed to get to the semi's in the trophy race tonight before I lost a round by .030 sec. I might have got the trophy if the roll of the dice went my way and I got the final by. But, I sure did not see any hot shoes on 9 sec bikes there tonight.

 

[Creekboy]

16/41 gears here....

 

[gnd111]

16/41 gears here....  

Good compromise - almost same as 17/44...

 

[fatrider]

16/41 gears here....  

Creekboy! how much do you weigh? what gear do you cross the trap in?

 

[sonicsbomb]

I used to run 16/42 on motor and ran 9.50`s @ 148 mph through the traps top of 5th, with spray would go 8.90`s @ 155mph top of 6th