old guy
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Posts: 470
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posted June 09, 2007 03:42 PM
 Edited By: old guy on 9 Jun 2007 17:11
Calling on Salt Flatters and top speed guys.
I am gearing up to run at Bubs speed trials at the flats in Sept.
Just a small effort in the runwachabrung class to achieve 200 mph.
Obviously I have never ran on salt so all info about that will be greatly appreciated!!!!!!
Did a search and basicly got a clue that I'm clueless about riding tehniques.
lots of info on building hp and how Brock did it.
I'm going alttle differently due to cost concerns.(Needed to buy leathers, new helmet, pay for trip etc.)
My riding partner has a funhauler motorhome and the time & $$ to go with. We share a need to go fast on anything. (Dirt bikes, jet skiis and now our street machines.)
Got a tsukigi pipe, no flies and custom map. A speedohealer, gearing and strap are in the works.
Doing track days and might do afew drags in preparation.
Dont know jack about the difference between tuning for top speed and street and track use.
Just wanted to start a thread where you folks who have been there could share with the ignorant 1st timers like Me.
Thanks in advance for your enlightenment, TC
____________
Living the good life...,
On a XZ !!!!!
Tsukigi stainless full system
pcIII w/custom map
NO freakin flies!!
GP suspension forks
Penske rear shock
Rich's custom seat
And a whole bunch of other stuff.
97 zx6r full race bike with all the
good stuff
  
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dubious
Needs a life
Needs more time to ride!
Posts: 8442
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posted June 09, 2007 07:48 PM
In a word TRACTION is the big difference I have been told.
____________
natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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flyboy
Pro
Posts: 1536
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posted June 09, 2007 10:32 PM
Edited By: flyboy on 9 Jun 2007 23:33
Let me know if you have any questions. I will be there too to go after some more records. This account of the week from last Sep might help you.
http://www.bikeland.org/story.php?storyID=26696
____________
'There's more living in five minutes flat-out on a bike than some men have in an entire life'.
"The World's Fastest Indian"
One fast red ZX-14,
Three World and four National Land Speed Records,
One faster red and white Cessna Turbo 210
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old guy
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Posts: 470
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posted June 10, 2007 12:38 PM
Thanks for the article and pointing the way to it but,,,,
OOOH...., I'm in freaking trouble!!!
I sense a new addiction coming on!!
Do you think a combo of remapping and timing change would restore the rpm lost at altitude?
Or is it just a case of need more hp to pull the gearing.
I have seen a/f meters posted on this site or zxninja and I believe I'll look for one of them for a possible remapping for 5000+ ft. elevation.
Obviously what works here at sealevel wont be good there.
I'll check with Dynojet and possible hook up with someone in Salt Lake City for a dyno run and custom map.
I can clearly see me chasing records in other classes but I just will try for 200mph on the zx just for the sake of going 200 mph!!!
But it is clearly going to require more thought, prep and effort than I assumed.
Plus alittle creative cheating!!!
Thank you much Flyboy. I was hoping you would respond.
____________
Living the good life...,
On a XZ !!!!!
Tsukigi stainless full system
pcIII w/custom map
NO freakin flies!!
GP suspension forks
Penske rear shock
Rich's custom seat
And a whole bunch of other stuff.
97 zx6r full race bike with all the
good stuff
|
BobC
Pro
Posts: 1736
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posted June 11, 2007 06:28 AM
Edited By: BobC on 11 Jun 2007 07:45
The secret of getting the maximum out of your bike is to know how much rear-wheel bhp it makes and how fast that ought to go, then gear for peak power in 6th to equal that speed. We are lucky with the 14 because it's quite a flat topped power curve and there's around 500rpm to play with here but over or under-geared is no good.
I've got no experience on salt but I guess you can't launch too hard (over to Flyboy) but the second very important factor for maximum speed is drag coefficient. Look at this picture, ok I've shown it before but it's two 14's making exactly the same power but the blue one (mine) is 11.7mph faster. Reasons? the height of our helmets is obvious, also the fact that my bike is lowered but look at the smaller details like where our feet are. I even take my left hand off the bar sometimes and tuck it across my chest, anything to get a smaller profile.
____________
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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flyboy
Pro
Posts: 1536
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posted June 11, 2007 09:38 AM
old guy-
If 200 mph is your goal you will have a better chance of achieving it at Maxton (sea level) if you plan on doing nothing to your engine (unless you use nitrous). At Bonneville, because of the density altitude (altitude and temperature) you going to loose hp. and therefore speed. You can figure on an approximate 5-8% drop in top speed as compared to sea level. And one final note-- bring extra sprockets.
____________
'There's more living in five minutes flat-out on a bike than some men have in an entire life'.
"The World's Fastest Indian"
One fast red ZX-14,
Three World and four National Land Speed Records,
One faster red and white Cessna Turbo 210
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kspz3
Expert Class
Posts: 334
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posted June 11, 2007 11:05 AM
quote:
old guy-
If 200 mph is your goal you will have a better chance of achieving it at Maxton (sea level) if you plan on doing nothing to your engine (unless you use nitrous). At Bonneville, because of the density altitude (altitude and temperature) you going to loose hp. and therefore speed. You can figure on an approximate 5-8% drop in top speed as compared to sea level. And one final note-- bring extra sprockets.
Actually the problem at Maxton is you run out of track before you run out of engine..... I am not sure that Bonneville is any harder than Maxton - but I will be able to compare notes come September..... Maxton is a combo drag race(sprint) and land speed race(max speed) - at Maxton your final velocity is limted by how much you can accelerate in the distance - you do not attain terminal velocity.
KSP
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kspz3
Expert Class
Posts: 334
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posted June 11, 2007 11:09 AM
Edited By: kspz3 on 11 Jun 2007 12:10
quote:
The secret of getting the maximum out of your bike is to know how much rear-wheel bhp it makes and how fast that ought to go, then gear for peak power in 6th to equal that speed. We are lucky with the 14 because it's quite a flat topped power curve and there's around 500rpm to play with here but over or under-geared is no good.
I've got no experience on salt but I guess you can't launch too hard (over to Flyboy) but the second very important factor for maximum speed is drag coefficient. Look at this picture, ok I've shown it before but it's two 14's making exactly the same power but the blue one (mine) is 11.7mph faster. Reasons? the height of our helmets is obvious, also the fact that my bike is lowered but look at the smaller details like where our feet are. I even take my left hand off the bar sometimes and tuck it across my chest, anything to get a smaller profile.
Bob - I can not see the pics - can you email me - I will PM - thanx
Kevin
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flyboy
Pro
Posts: 1536
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posted June 11, 2007 12:52 PM
In that case, come to Bonneville. You've got five miles to reach top speed, one mile of timing and then five miles to slow down. It may not be the fastest speed your bike can do on Earth.... but you won't hit a tree and die.
Sign up on my other post to make a mental committement to be there. BobC, you're going to have to take a boat--
____________
'There's more living in five minutes flat-out on a bike than some men have in an entire life'.
"The World's Fastest Indian"
One fast red ZX-14,
Three World and four National Land Speed Records,
One faster red and white Cessna Turbo 210
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oldkawboy
Needs a job
Posts: 2125
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posted June 11, 2007 04:06 PM
Since you brought it up flyboy.........
In June of '05 John Beckett our past president of Maxton's ECTA did indeed run through the trees at Maxton in his streamliner (car) after his chute failed to open. It tore his car up pretty bad but he did walk away, scaring all of us there for sure.
He worked hard to get the car together for the August meet at Bonneville. We were there with him as he suited up and watched him being pushed to the stating line, only to crash at the 5 mile mark and lose his life.
Moral of the story...........what we do is dangerous, no matter where. We let the thrill over-ride the fear sometimes but life is precious so be as prepared as well as possible.
Dan
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Old Guy
Expert Class
Posts: 470
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posted June 13, 2007 03:48 PM
Thats sobering oldkawboy.
BobC, I'm lucky I'm a scrawny guy so tucking isnt a big deal. Too bad your pictures didnt make it on the thread. But I get the idea. Got a double bubble Puig on the bike now that I dissapear behind on the street and track. Will bring both screens to the flats.
Flyboy, I might just do the gas to get there but havent done any homework on that. I dont drag race so no experience with it. Wonder if you can do a sustained mild shot for the traps and low traction salt?
____________
Living the good life...,
On a XZ !!!!!
Tsukigi stainless full system
pcIII w/custom map
NO freakin flies!!
GP suspension forks
Penske rear shock
Rich's custom seat
And a whole bunch of other stuff.
97 zx6r full race bike with all the
good stuff
|
kspz3
Expert Class
Posts: 334
|
posted June 13, 2007 07:33 PM
quote:
In that case, come to Bonneville. You've got five miles to reach top speed, one mile of timing and then five miles to slow down. It may not be the fastest speed your bike can do on Earth.... but you won't hit a tree and die.
Sign up on my other post to make a mental committement to be there. BobC, you're going to have to take a boat--
I will be there - and we went way past a mental commitment long time ago - Been working on this trip for a long time..... see you there.... Maxton next week for final shake down.
KSP
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