Another crappy night at the strip

[Delearious02]

So I took my second trip to the dragstrip determined to break into the 10s and I failed.... I have a 08 busa with 13k on it with a yosh full exhaust.... I am 350lbs I was taking it easy but still I just could not nail a launch. Best time was 11.32 with a nasty 60 ft of 2.2 129 mph.... Going to head back this weekend with new sparkplugs air filter and some fresh oil and see what happends hopfully dial in the launch who knows but im open to some tips.....

[chipofsc]

Runniing in the 10s should not be a problem even with your weight. Slip the clutch half way through first gear keeping the rpm high and hang on tight. Spinning should not be a problem so don't bother burning the rear tire in the water box just clean it off with a quick spin. Tuck down tight as you can. good luck

[rkcain]

Not burning rear tire on a drag strip ??? Thats a very first for me. I know if i don't burn and heat up that bad boy, It's not going to be a nice ride. i dont think i have ever seen a bike go down track without a burn out. :umm:

[LeeY8s]

i agree. I would definatly do a burn out! especially if you are running a street tire which i feel certain you are! A hard street tire will definatly break loose and spin! and i realize it doesnt sound safe but dont bother using the clutch after your 1st to 2nd shift. It will shift fine and wont break anything unless you do it all the time! also try to drop the pressure in your rear tire a good bit. You wont learn how to do it overnight! Just keep trying!

[rkcain]

How much air press you running in rear tire. i have a k8 +6" stretched,lowered 1 1/4". -2 front & +1 rear sprockets and many other mods :cheers:

[busaboy]

Drop the rear tire psi to 20
How much air press you running in rear tire. i have a k8 +6" stretched,lowered 1 1/4". -2 front & +1 rear sprockets and many other mods :cheers:

[Delearious02]

I will drop the pressure in the tire this friday and see how it works out. I just need to improve my launch, the bike is bogging down at launch so I'm guess thats lack of throttle and clutch control.

[chipofsc]

At 350 lbs heating the tire is not a issue. Im 175 and I run 10 psi at the track and street. I only spin the tire just for a second to clean the tire off and never had a traction problem at the track. On the street is a different matter. I need the heat.

[karl_1052]

Not burning rear tire on a drag strip ??? Thats a very first for me. I know if i don't burn and heat up that bad boy, It's not going to be a nice ride. i dont think i have ever seen a bike go down track without a burn out. :umm:
the only time I went, I had stock pressures(40psi), and did not do burnouts. I left the line around 4K rpm, and shifted at 11K. Never once broke traction.
I do need to lauch at a higher rpm next time, and maybe then I will do burnouts, but I was able to get into the 10s without it.

OP: it took me 26 runs to get into the 10s(a bunch were done in B and C mode, just for fun).

Next goal, low 10s.

[toastman]

It ALL depends on track prep as well. How much VHT is down on the track. How much rubber is down on the track. How hot is it out...
I haven't used a water box for 3 years now...just ahead of it...stand up off the seat, and scuff the tire off...then roll up to the line.
Where you launch from off the line is more important than doing a crowd pleasing burnout.
Good luck with your drag racing bug!!

Cheers,

Tony

[chipofsc]

Thank you Toastman.

[Got-Busa?]

If you are not spinning the tire, no need to drop the PSI. You are just going to drop the MPH. Do a easy burn out to clean the tire off and stage. You are wasting your time with a street tire and your size burning it off.

You need to work the clutch and get wide open throttle ASAP!

[toastman]

:thumbs up: And what got busa said as well :thumbs up: good point :oh yeah:

Cheers,

Tony

[busaboy]

You need more seat time, and Got-Busa? hit the nail on the head with his post imo.

[gp1300]

You not being in the 10's has nothing todo with tire pressure your short time is 2.2 and you said your boggin so your not leavin hard enough to have a traction problem,you'll be boggin even more if you lower your tire pressure.If I was your body wieght I would gear my bike up in the rear 2 teeth which will help you get all that mass movin easier,you just need to keep your rpm up more and slide the clutch and you'll be in the 10's no problem,1 tenth quicker in the 60' gives you 2 tenths on the other end,a 1.7 60' compared to your 2.2 will make you a full second faster if you get the bike down the track cleanly.You just need more seat time,not oil changes or air filters,just twist that throttle out of the hole harder mate. Good Luck

[Delearious02]

Well the air filter and oil change is just regular maint. its about that time.... with 14k for the air filter and spark plugs I figure it is time. I agree with the seat time issue was just looking for a couple tips ..... didnt make it this past friday because they canceled street night but this coming friday we will see what happends.

[gp1300]

You should be able to get in the 10's no problem without gearing,It would save your clutches and be easier to launch geared in my opinion,that's alot of mass bike and rider,900lbs bike and rider.If your going to keep goin to the track you better atleast install some heavy springs,just a thought,good luck!!

[ethan]

The guys before me nailed it. Run as MUCH tire pressure as the track will hold. Lots of variables, but running low pressure just for the sake of it is useless. Same for burnouts too, if you dont spin and you didnt do a burnout, why start. Being a heavy guy, you need gearing, plain and simple. As for the clutch, you should'nt need to slip the busa too hard, they pull good enough at lower rpms to run a good short time without revving the shit out of it. Get your gearing sorted so you can just leave smooth. I hold no more than 4000 rpm at the line. A quick flash and then she's off. Let the torque of the big cc do some of the work. Get to full throttle asap. If you are slipping the clutch and your not a full throttlle you're just wasting clutch material and you wont go fast.

That's my 2 cents.

[Ft Campbell Busa]

The guys before me nailed it. Run as MUCH tire pressure as the track will hold. Lots of variables, but running low pressure just for the sake of it is useless. Same for burnouts too, if you dont spin and you didnt do a burnout, why start. Being a heavy guy, you need gearing, plain and simple. As for the clutch, you should'nt need to slip the busa too hard, they pull good enough at lower rpms to run a good short time without revving the shit out of it. Get your gearing sorted so you can just leave smooth. I hold no more than 4000 rpm at the line. A quick flash and then she's off. Let the torque of the big cc do some of the work. Get to full throttle asap. If you are slipping the clutch and your not a full throttlle you're just wasting clutch material and you wont go fast.

That's my 2 cents.

Excellent advice! :cheers:

[paulwall]

First let me say this, stock wheelbase bikes are the hardest ones to ride at the track. The good thing about them is that once you figure out how to control the launch with the clutch, you are in the game.

Try this, Start off at 20 psi in the rear tire. Do a small burnout to clean the tire and slightly heat it up. Stage the bike at about 4500 to 5000 rpm, and when the light turns green, begin slipping the clutch and at the same time twisting the throttle, while doing this, control the front of the bike from wheeling with the clutch. You should be completely out of the clutch by the sixty foot at the latest. Once you make second gear, tuck and try to hide behind the wind screen. If you dont spin on take off, go up on tire pressure a couple pounds until you do and then go back down to the highest psi without spinning. The higher the tire pressure, the faster the mph will be. Tire pressure will vary with temp and track conditions. Another note is that stock wheelbase bikes usually will not have short times as fast as a longer wheelbase bike, but will back half the track faster. Just a few pointers, may have missed a few or not elaborated enough. Seat time is the best route for going faster, but helps to have a few pointers. Also, im not as heavy as you, but i am 215lbs suited and have run high 9.3s on a stock wheelbase 08 busa with pcIII, air shifter, and intake cam on exhaust side. Bike could go faster but it was my first and only pass.

[HI HATERS ...BYE HATERS]

man u guys use this bike for what it was built for...im noit mad at yall at all...that tire pressure topis seems to come up alot...what about in wheelies....what if u like lifting the front up and riding it...whats a good psi????? i wanna master this thing...but also i do love corners...is there a happy medium between the 2???...or do i have to pick one direction....how about sprocket teeth....what can i put on the busa to lift it easier but not loose too much top end???