Dragbike first start up

[kawadave]

Hows things going Sam????
Its your cousin Dave here from Bundy...say hello to mum and dad for me and good luck with this years racing.

[sparker]

Hi Guys,

thought I'd share a picture of my nitrous setup for the zx7. Also shows the lectron carbs mounted



Cheers,
Sam

[BrettZZR]

So the fuel is added through the red tubes?
It appears to be a single shot (stage) - what shot are you running?
How is it controlled? RPM switch?

(-&

EDIT: Sorry just re-read pg1 and saw it - 150 shot!

[-8'

[sparker]

Thanks for the reply.
The nitrous is added via these stainless discharge tubes (fires straight into the carbs) and the fuel is added via the red tubes after the carbs. It's a pulsed system with a single stage (only need one stage when you progressively add the gas). It's controlled by a Wizards of Nos Max Extreme V2. This is a mapable nitrous controller that looks at rpm, throttle, gear, fuel psi, nitrous psi and more to spray the correct amount.

Should be good!
Sam

[BrettZZR]

Ah! Pulsed ramp-up. Nice!
I was a bit concerned that you will continue to get flow of gas each time it shuts down (till all the gas in the distibution pipes after the solenoid is out) where as the fuel will stop immediately. I guess the pulser cycles that quickly that it will smooth out the flows okay, so will only affect shut-down - but on the strip you will shut the throttle completely. Also, your tune will be be waaay rich to carry extra heat away too?

Just one thing (though I'm 300% sure you will be all over this anyway):
Your fuel jets for 150/4 = ~37Hp will be quite small. A speck of dirt blocking that will be 'instant' boom when you are on the bottle. I'm sure you have excellent fuel filters in place!

Thanks - looking forward to updates and more pics!

(-&

[sparker]

Yep, its a complicated little beast the WON Max Extreme. Very smooth hits compared to american products.

The gas and the fuel will continue to come out for a split second after the max cuts the solinoids, but if anything, the gas will stop before the fuel does. The two solenoids are exactly the same distance from the motor and the 1000psi nitrous will empty quicker than the 35psi fuel will.

The tune will be a little rich, but not waaaay rich. No need if the nitrous and fuel is metered correctly and the ignition is not too advanced. The nitrous will cool the intake charge down dramatically also.

With this system you don't actually have 4 sets of jets. You have one set at the solenoid. This will allow the system to run smaller amounts of horspower without the risk of blockage, but I do also have filters on the nitrous and fuel side to be sure.

Will take some more pictures of the bike and post up soon.

Sam