Author Topic: 60 foot problem Help (Read 12110 times) Tweet

firefighter82 · « **on:** September 26, 2011, 11:26:51 PM »

I have a 2000 1397 Busa just rebuilt. What's a good rpm to leave at. I have tried adjusting clutch leaver and nothing seems to work. best 60ft is 1.65-1.78

. Running 39 sproket rear and 16 front. Maybe someone can tell me how to get a better time.
Thanks for all replies and

firefighter82 · « **Reply #1 on:** September 28, 2011, 08:05:02 PM »

Quote from: firefighter82 on September 26, 2011, 11:26:51 PM

I have a 2000 1397 Busa just rebuilt. What's a good rpm to leave at. I have tried adjusting clutch leaver and nothing seems to work. best 60ft is 1.65-1.78 . Running 39 sproket rear and 16 front. Maybe someone can tell me how to get a better time.
Thanks for all replies and

firefighter82 · « **Reply #2 on:** September 28, 2011, 08:07:33 PM »

Someone give me advice please!

Ron Politically Incorrect · « **Reply #3 on:** September 28, 2011, 08:15:01 PM »

Need more info:
Is the wheel base stock , what is the rear shock set at , type of rear shock , is front lowered , is the rear lowered , what RPM are you leaving at now are you slipping the clutch or dumping it ?

firefighter82 · « **Reply #4 on:** October 08, 2011, 10:42:27 PM »

The front is cot 2" the lenth is 60" rear lowered with stock shock set to the soft side with slow rebound, leaving at 6000 and slipping the clutch. went to Atlanta Dragway last night and 1.78 is best 60' time. Thanks for your help

moparict · « **Reply #5 on:** October 09, 2011, 09:01:24 AM »

Are you sure you're pinning the throttle? When are you getting out of the clutch? Sounds like you are riding the clutch for too long with not enough throttle. , I would also change the rear sprocket to a 42.

sportbikeryder · « **Reply #6 on:** October 09, 2011, 09:06:52 AM »

Gearing too tall. Go to a 42 or so as mentioned.

BATTMAN · « **Reply #7 on:** October 09, 2011, 10:18:57 PM »

change the gearing. Try leaving at lower rpm and pin the throttle. thats alot of rpm for a swb. Does the bike wheelie through 1st gear?

wildphil69 · « **Reply #8 on:** October 10, 2011, 01:19:26 AM »

i ran 17/43 or 45 cant remember stock length bone stock clutch high 1.5 60's consistently.

Get the clutch out as fast as you can as you apply throttle without launching the front end.

firefighter82 · « **Reply #9 on:** October 10, 2011, 11:51:15 PM »

Thanks for your help. I am not pinning throttle and will try lowering gear and lower rmp. Yes bike does wheelie in first! Again thanks!

wildphil69 · « **Reply #10 on:** October 11, 2011, 10:18:43 AM »

its all in clutch control. if you have facebook you can look at my onboard video you can hear it

http://www.facebook.com/video/video.php?v=442045277931

moparict · « **Reply #11 on:** October 11, 2011, 11:21:03 AM »

Quote from: firefighter82 on October 10, 2011, 11:51:15 PM

Thanks for your help. I am not pinning throttle and will try lowering gear and lower rmp. Yes bike does wheelie in first! Again thanks!

I don't know your technique, but let me tell you a proven system. Get up as far as you can on your bike. "Wrap" your wrist around the throttle in such a way that when holding the bike at your launch RPM, your arm makes a 90 degree bend to the ground. Your elbow should be in the air. When the lights come down, drop your elbow. That forces the bike to WOT. The trick is to slide the clutch out in such a way that the bike doesn't wheelie to bad, but you don't want to slip it too much either. This is the part that takes practice. Now your sense of self preservation is going to kick in and your sense of "go fast" will suffer until you get all this down. Once you do it a couple of times right, you'll do it forever. Practice with your bike not runnng. Make it a muscle memory thing. Run the pass through your head. Seat time is the key.

Ron Politically Incorrect · « **Reply #12 on:** October 11, 2011, 12:05:46 PM »

How much do you weigh ?
Reason asking is that any heavy person like my self 265 lbs , will change the center of gravity on a sport bike thereby causing it to wheelie at the drop of a hat.
My 07 came with 17-40 and when ever I hammered it the bike would stand up even when I was in 3 rd gear.
I tried a set of 6 over extenders and that solved the problem.
Now I have a 6 over arm with 17-46 gearing 7" M/T slick , 50 hp shot of nitrous , I drop the hammer @ 7,200 using a Launch Master no wheelies , but some times a little tire spin when the nitrous come on in 2ND gear.
Try and barrow a set of extenders and see if that solves your problem.
You will get better 60' time buy dumping the clutch virse slidding the clutch @ the gate.

caddylt1 · « **Reply #13 on:** October 11, 2011, 08:18:54 PM »

Quote from: moparict on October 11, 2011, 11:21:03 AM

Quote from: firefighter82 on October 10, 2011, 11:51:15 PM
Thanks for your help. I am not pinning throttle and will try lowering gear and lower rmp. Yes bike does wheelie in first! Again thanks!

I don't know your technique, but let me tell you a proven system. Get up as far as you can on your bike. "Wrap" your wrist around the throttle in such a way that when holding the bike at your launch RPM, your arm makes a 90 degree bend to the ground. Your elbow should be in the air. When the lights come down, drop your elbow. That forces the bike to WOT. The trick is to slide the clutch out in such a way that the bike doesn't wheelie to bad, but you don't want to slip it too much either. This is the part that takes practice. Now your sense of self preservation is going to kick in and your sense of "go fast" will suffer until you get all this down. Once you do it a couple of times right, you'll do it forever. Practice with your bike not runnng. Make it a muscle memory thing. Run the pass through your head. Seat time is the key.

this.

but keep in mind every bike is different, but if you take this advise youre bound to do well. I learned to drag race in 10 minutes in a parking lot after work one day. I couldnt get the short times down, and an older buddy of mine that used to run ProStar showed me and it all clicked. It just takes lots of passes. grab as much throttle as you can and use the clutch to control the launch.

are you on the stock clutch OP?

firefighter82 · « **Reply #14 on:** October 28, 2011, 10:36:38 PM »

Thank all of you for your advise. I have been out of town for a couple weeks so have not got to get back to you. Reading all advise sent and will try to use at the Rock next week. Anyone going?

firefighter82 · « **Reply #15 on:** October 28, 2011, 10:42:31 PM »

Will a MTC 2 step clutch set up help a lot in my case. Hey Ron I weigh 176lbs.

BATTMAN · « **Reply #16 on:** October 30, 2011, 10:13:25 AM »

Quote from: firefighter82 on October 28, 2011, 10:42:31 PM

Will a MTC 2 step clutch set up help a lot in my case. Hey Ron I weigh 176lbs.

Are you referring to a 2-step or a 2 stage clutch? I wouldnt spend any money until you get the most out of the setup you have now. Buying the most expensive golf clubs isnt gonna make you a pro golfer. Work on your basics. When you can run 10 passes with the same times within 5 thousandths, then you can add more performace parts. You are not consistant enough yet to start making changes. Just do all the free mods, work on your technique, and get more seat. After that...get more seat time. then get more seat time. Did i mention get more seat time?

firefighter82 · « **Reply #17 on:** November 08, 2011, 11:03:59 AM »

Yea. 2-stage MTC. Thanks again. Hope to paractice some in parking lot near by.

BATTMAN · « **Reply #18 on:** November 08, 2011, 12:08:31 PM »

A 2 stage clutch will help hold the power on the top end and once tuned right, you can throw the clutch handle.

knecum · « **Reply #19 on:** November 10, 2011, 06:10:05 PM »

Quote from: BATTMAN on October 30, 2011, 10:13:25 AM

Quote from: firefighter82 on October 28, 2011, 10:42:31 PM
Will a MTC 2 step clutch set up help a lot in my case. Hey Ron I weigh 176lbs.

Are you referring to a 2-step or a 2 stage clutch? I wouldnt spend any money until you get the most out of the setup you have now. Buying the most expensive golf clubs isnt gonna make you a pro golfer. Work on your basics. When you can run 10 passes with the same times within 5 thousandths, then you can add more performace parts. You are not consistant enough yet to start making changes. Just do all the free mods, work on your technique, and get more seat. After that...get more seat time. then get more seat time. Did i mention get more seat time?

You mean 5 hundreths ?? If you can run 9.000-9.005 your amazing!! and nobody can!!

BATTMAN · « **Reply #20 on:** November 12, 2011, 09:57:57 AM »

Yep....thats what I meant. The thought was right in my head. It got lost when my fingers started typing.

Gixxer1300r · « **Reply #21 on:** December 27, 2011, 01:57:44 AM »

I ran a stock motored bike, piped, small airbox mod, and tuned, stock wheelbase, slammed in the front, 1.5" down in the rear, 16/40 gearing 180/17 pirelle dragon evo tire. I weighted about 235 suited.

I would hold the bike at about 2500 to 2800 rpms on the line, as the last yellow came on I would slip the clutch very quickly while opening the throttle making sure I had it pinned before I shifted out of first. The result was consistent low 1.6 60ft times

Kirk · « **Reply #22 on:** December 28, 2011, 01:56:14 PM »

Ah...guys, I think we missed something.

Does the OP have a one-piece clutch hub, or is he trying to do this with the stock clutch. BIG difference.

Kirk · « **Reply #23 on:** January 22, 2012, 12:50:29 PM »

Crap, looks like the guy hasn't been active here since November 27th. Hope he hasn't been laid up with injuries sustained from his bike using him for a tent peg near the end of the launch pad because of a stock 2-piece clutch hub.

pracing · « **Reply #24 on:** February 11, 2012, 01:53:38 PM »

i ran my bike full stock im 2 50 pounds and got a 1.68 60 ft i lowered the front and rear and change gears ran a 1.56 no is 64 inches and i got 1.40 1.50 all day i thin for a guy thats 250 on a piped and airbox gen 1 stock running 6.30 @ 112 its really good any coments guys that will help

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Author Topic: 60 foot problem Help (Read 12110 times) Tweet