almost_les
Zone Head
Posts: 590
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posted August 22, 2009 01:45 PM
 Edited By: almost_les on 22 Aug 2009 22:26
new best on my 12
60------1.728
330----4.377
1/8-----6.496
mph---116.02
1000--8.332
1/4-----9.898
mph--143.60
this in on SWB lowered and 16t in front. to give you an idea of air conditions, there was a new busa and 14, both stretched about 9 inches, the quickest going 9.723, both running 138-139 mph. and the local turbo 14 has hit 147. kinda sucks, i was the quickest all motor bike this year until that 14 showed up and ran that 9.7. hopefully i can catch up by the end of the season and take back that title (on stock wheelbase  ). i know the bike has more left in it. so far my best 60 is a 1.683 and thats not even lifting the front tire. what's limiting the bike is headshake. everytime it goes into second it starts shaking like a dog shitting razorblades and i have to roll off the throttle. needs a damper. bad. so if you got one, kick it my way  as always, any input and advice is much appreciated.
  
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Shane661
Needs a life
Posts: 11494
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posted August 22, 2009 01:50 PM
Edited By: Shane661 on 22 Aug 2009 21:51
Good job! What were the track conditions? Temp, RH, and altitude? What is your suited weight?
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almost_les
Zone Head
Posts: 590
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posted August 22, 2009 01:54 PM
Edited By: almost_les on 22 Aug 2009 21:57
the track sits at 4225. not too sure what the temp was yesterday. but right now, its 100 to give you an idea.
http://www.ksl.com/?nid=88
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Shane661
Needs a life
Posts: 11494
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posted August 22, 2009 02:03 PM
What time did you make your passes yesterday? How much do you weigh?
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almost_les
Zone Head
Posts: 590
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posted August 22, 2009 02:07 PM
135 nekkid. by the time i was making the fast passes it was late and probably cooled down to around 80 degrees. i have to sandbag during the day because the track has some retared rules saying no bike can go faster than 10.00 in the street legal races so i won't even bother posting those times. i would be able to post humidity, but my friends weather station broke :\
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almost_les
Zone Head
Posts: 590
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posted August 22, 2009 02:24 PM
Edited By: almost_les on 22 Aug 2009 22:26
next midnight drags will be in two weeks. im gonna try softening up the rear shock (still setup for +4 arm) putting the lower fairings back on, and filling the front axle with lead. hopefully it will help with stability issues.
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CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
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posted August 22, 2009 02:29 PM
les.....How low is the front?
You probably have too much pressure on the bars OR uneven pressure...Try to hold the bars as even as possible...
What year is your 12 and what mods?
Do you have the rear set up soft?
Rear OEM fender or tiget tail?
You foot shift?
____________
Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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Shane661
Needs a life
Posts: 11494
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posted August 22, 2009 02:31 PM
Edited By: Shane661 on 22 Aug 2009 22:32
You were probably at a DA of around 6500 or so feet. That is definitely pretty rough. Lucky you didn't run it at 100 degrees out!
My 12R was strapped, with a 60 series front tire. It would get shake occasionally and I ended up installing a Scott's damper on it.
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CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
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posted August 22, 2009 02:49 PM
I still never had a damper on my 12...The only time I got head shake was when it was on a small wheelie and came down crooked as I had uneven pressure on the bars...
Having the forks an inch above the top of the triple clamp will help alot...
____________
Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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Shane661
Needs a life
Posts: 11494
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posted August 22, 2009 02:52 PM
If it is not lowered enough in the rear, it will be more inclined to head shake. That was the issue with mine when strapped. Rick's bike sits properly, but if you have a street height bike that you just strap down tight up front, you are inviting head shake.
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almost_les
Zone Head
Posts: 590
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posted August 22, 2009 03:53 PM
the front is dropped 1.5 inches, no strap, 120/60 shinko. the rear is on the bottom hole of the links with a 190 shinko usoft @ 18lbs. stock undertail. air shift. lots of mods, including motorwork. i think the rear is too stiff cuz it only wants to shake after the shift. i think it needs to be softened up more so it can soak up the jolt from the shift instead of pushing it all back through the chassis. if i roll off and get back on it, no more shake, and no shakes through first gear either. wouldnt be surprised if its from not keeping even pressure.
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CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
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posted August 22, 2009 04:56 PM
You need to strap the front to prevent the forks from rising under throttle load then unload back to load...Thats why your getting wobble...
Check the under tail to see if the tire is rubbing...I would leave it if its not...If it is then turn the spring colar clock wise 1 turn and see if that helps...
____________
Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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almost_les
Zone Head
Posts: 590
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posted August 22, 2009 06:15 PM
im gonna have to throw some masking tape under the tail to check if the tire rubs. so pretty much keep dropping spring pressure until it touches, then back off a turn?
what about the strap? does it need a lot of pressure or just enough to keep the forks from extending past their static sag point with rider?
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2000redrocket
Pro
Posts: 1662
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posted August 23, 2009 10:10 AM
i wrecked my 12r on a tankslapper at the 1000ft mark. get a dampener. its 500 bucks or less will save you a lot more money if it is needed and you go down. if you can choose try to get a slapper at the big end so you do not get caught up on the rubber and flip and roll. everyone that went down in the first half broke a bone ot two so ride it out as long as you can.
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almost_les
Zone Head
Posts: 590
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posted September 02, 2009 01:31 PM
Edited By: almost_les on 2 Sep 2009 21:33
put on the strap today and softened up the rear. gonna head out to the track for test and tune to see how it works out. if its nice and steady then on friday i'll throw on the ballst boxes i had made up and try take back my place as quickest all motor bike. right now the boxes total about 10lbs empty and i can still fit up to 15lbs of lead in them
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almost_les
Zone Head
Posts: 590
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posted September 02, 2009 03:47 PM
dang, looks like there is no test and tune this week, gonna have to wait until next...
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chavcat
Zone Head
Posts: 524
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posted September 02, 2009 06:00 PM
Where do you add weight? Any photos of this?
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NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted September 03, 2009 10:12 PM
It does not take much room for lead........, a coke can sized area can be 10 lbs easy........
____________
42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
Scorpion Helmets
Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
Mickey Thompson Tires
Catalyst Racing Composites
Conway Cycle
Syed Leathers
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chavcat
Zone Head
Posts: 524
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posted September 04, 2009 03:59 AM
Where do you mount weight aside from the front axle?
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NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted September 04, 2009 06:05 AM
It all depends on how much you need, wb, power etc.
____________
42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
Scorpion Helmets
Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
Mickey Thompson Tires
Catalyst Racing Composites
Conway Cycle
Syed Leathers
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almost_les
Zone Head
Posts: 590
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posted September 04, 2009 03:34 PM
Edited By: almost_les on 4 Sep 2009 23:38
2" trailer hitch tubing (rounded corners), some welding, and grade 8 hardware. each side is about 5 lbs empty. keep in mind this is TRACK ONLY. i ride down, throw it on, race, take it off, ride back. you can use you imagination about what would happen if you hit a pothole or bump in the road with these on. and no slamming down wheelies either
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chavcat
Zone Head
Posts: 524
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posted September 04, 2009 04:50 PM
Any way of attaching weight to the motor also?
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