shiphteey
Needs a job
Posts: 2529
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posted August 05, 2007 06:11 AM
 Edited By: shiphteey on 5 Aug 2007 07:12
Need some advice w/regards to an air shifter and nitrous
Hey guys. Presently footshifting the 12 with a small dry 40 shot off the horn button.
What I'd like to have set-up wise is the nitrous to come on at WOT (under the gears I preset it to come on at) with the horn button SIMULTANEOUSLY cutting out the nitrous while ALSO air shifting.
What route would you guys recommend? Price is of course a deciding factor as is the "tried and true" real-world testimony.
I already run 1 to 2 nos bottles, each a 2.5 lb bottle. I figured I could T in a line and use the a regulator so that the nitrous not only powers the bike HP wise but also is used in place of an additional (air shifter) bottle. Less weight and less "stuff" to deal with.
Any recommendations? Is there an inexpensive device that has a WOT switch BUT one in which you can select the gears you'd like to use....? Land Speed Racing and Drag Racing don't always require spraying the same gears if you know what I mean.
Eventually though I will probably work my way up to a full-on wet kit w/forged pistons and a 100+ shot so if there is a kit that you guys recommend that interfaces w/a wet kit too let me know, but for the rest of the season till next spring I'll be spraying small dry shots.
Thanks!
A.
  
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Stuart Racing
Zone Head
N.H.R.A . Dragracing.
Posts: 999
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posted August 05, 2007 07:18 AM
Dyna shift minder...It has terminals on it to activate anything you want in any specific gear you want activated....I think thats what your asking...
Paul.......
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ninja12
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posted August 05, 2007 01:29 PM
Edited By: ninja12 on 5 Aug 2007 14:31
Been dicussed many times before, you can't kill the nitrous fast enough to help,
Use you garden hose and nozzel to test .
Start spraying water in the air then let off and back on as fast as you can.
RESULT!
The water never cleared the air before you were spraying again.
The same thing would happen with the nitrous in the intake and lines after the solnoids .
The shift take milliseconds, it would probable take atleast 1/4-1/2 second for the nitrous
to clear the lines and the intake.
Just spray thru the shift. Money better spent on a window switch to kill nitrous before
the rev limit in case of a missed shift.
Schnitz sells a TPS and RPM window switch in one.
Maybe you could use that with the dyna to do it all.
my .02
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Wolf Racing
Expert Class
Posts: 138
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posted August 06, 2007 12:11 AM
Hi,
We use a small micro switch for WOT that is triggered on the throttle bodies. Uses the lump on the throttle turn where the cables attach.
We then have a relay connected to the solenoid on the NOS feed line. The relay cuts the NOS when the shift is pushed.
We have experimented and if we don't use the relay, we can't get 4 and 5th gear as the motor will not unload enough.
It's pretty simple and all can work off of the horn button.
Cheers,
Dave.
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02zx12rbob
Expert Class
Posts: 496
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posted August 06, 2007 07:47 AM
Sounds kinda like the same set-up I had. Without autoshift, it got a little too busy. I used the micro switch @ WOT. Went back to the button (start) for spray, dry 40 shot. No problems.
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Halvefast
Zone Head
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posted August 06, 2007 12:31 PM
Edited By: Halvefast on 6 Aug 2007 13:33
Here ya go Ship:
http://www.dynotunenitrous.com/store/scripts/prodView.asp?idproduct=194
It is a window switch that you can make gear specific, it waits until it cycles thru the Rpm range you set,
as many times as you set it for, so it can come on it 3rd if you want or sooner and later.
As far as the shifter goes you are on the right track, but beware as Nox will tell ya,
they have a tendency to freeze up
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Halvefast
Zone Head
Posts: 806
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posted August 06, 2007 12:49 PM
Guys on the similar area of questioning as Ship-
Does it matter to use a quickshifter to kill the bike with Nitrous,
due to the fact it kills the fuel for say 80 milliseconds, could that short of time
hurt the motor trying to shift thru the nitrous?
I would still have a window switch to protect overreving.
Sorry if this is percieved as jacking Ship, just thought it was online with your question.
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shiphteey
Needs a job
Posts: 2529
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posted August 06, 2007 01:41 PM
No WAY man, its definately pertinent to the topic! A lot of great info....decisions decisions...thanks guys!
A.
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zrexpilot
Expert Class
Posts: 470
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posted August 07, 2007 06:48 PM
how many times are you gonna ask this same question
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shiphteey
Needs a job
Posts: 2529
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posted August 08, 2007 03:16 AM
8 more times.
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zrexpilot
Expert Class
Posts: 470
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posted August 08, 2007 06:26 PM
Its pointless to cut out nitrous on a fogger system.
Micro switch with positive to NOS, gear position wires to ground on NOS
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oof440
Expert Class
Posts: 137
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posted August 09, 2007 04:09 AM
I asked someone the other day about a dynojet quickshifter and nos and they said that they thought the kill time would be too long, I dont know what kind of kill time is acceptable but I would like to do the quickshifter rather then the airshifter if it's doable, any thoughts?
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Texas12R
Zone Head
Posts: 545
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posted August 09, 2007 04:48 AM
from what I remember the kill time is adjustable from 45ms to 600ms .
I have mine at 75ms and that is too long for a shift @ 10500rpms.
Im not doing this with giggle juice ........yet
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zrexpilot
Expert Class
Posts: 470
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posted August 09, 2007 12:35 PM
The quick shifter uses the power commander to kill fuel for the shift, which is a big no-no for nitrous applications, you want to kill ingnition when using nitrous.
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Wolf Racing
Expert Class
Posts: 138
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posted August 10, 2007 11:01 PM
zrex,
Coiuld you say why you don't kill fuel.
I was always told that cutting the ignition might let unburnt fuel through with preignition or exhaust ignition causing problems?.
Be keen to know more?
Thanks Wolf
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Texas12R
Zone Head
Posts: 545
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posted August 11, 2007 06:22 AM
the muzzy air shifter uses the digi-kill to kill the fuel . I thought the stealth kit was available
with a plug and play kit to utilize the air shifter along with the stealth.....maybe the harness
is different than I thought
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Halvefast
Zone Head
Posts: 806
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posted August 11, 2007 12:04 PM
Edited By: Halvefast on 11 Aug 2007 13:05
You make a great point Tex-
I'll be calling muzzys on Monday, they sell it as a complete kit
which is exactly what I'm trying to do.
http://www.muzzys.com/ZX14/ZX14_Air_Shifter/index.html
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Wolf Racing
Expert Class
Posts: 138
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posted August 11, 2007 01:31 PM
texas12R,
We have an old set up. It's not the digi kill but the older Muzzys shifter box. I'll check it out with Muz.
Cheers,
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Texas12R
Zone Head
Posts: 545
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posted August 12, 2007 03:44 AM
Thanks for the help, and post some more pics from the "Wolfs Den"
I hope this is helping Shipteey!!!!! Hope to meet Ali at Goliad along with everyone else..
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zrexpilot
Expert Class
Posts: 470
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posted August 12, 2007 07:53 AM
quote:
zrex,
Coiuld you say why you don't kill fuel.
I was always told that cutting the ignition might let unburnt fuel through with preignition or exhaust ignition causing problems?.
Be keen to know more?
Thanks Wolf
well think about it, with turbo or nitrous your going to have a lean condition if you cut out fuel.
I would rather be rich than lean.
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