NITROUS OXIDE ( nos / n2o ) advice forum

The X-10 Pulsoids no longer have a mounting stud, but a mounting backplate instead. These have a habit of backing out if the mounting plate screw is too tight.

It is CRUCIAL to tighten it back up because it holds the plunger stop and seal in place. However, there is no real torque value to apply to it so it just needs to be tightened, and it is a good idea to add a drop of thread sealer on there to keep it in place.

You can also mount the transducers remotely with some extra plumbing parts in order to fit your bike.

Thanks for your reply, Alex.
As far as I understand "never use loctite on the mounting nut/stud" restriction is also dedicated to the previous mounting?
Is it now acceptable to use some thread lock on mounting plate screw?

I would not put it on the screw, no.

Thank you, Alex.
Will keep moving.

Hello again.
When installing transducer directly into purge port, should I keep both black and white seals?
Black seal was under the blank.
White seal came with gauge kit.


BTW, is there any difference between transducers installation place from controller's point of view?
I mean will MaxExtrme gain the same values from transducer in purge port and transducer in T-pice on the bottle?

PS:
Can I use 1/8bsp[male] to 1/8bsp[female] 90 degree adapter directly in a purge port to change transducer orientation?
I want to make it parallel with X-10 body.

Thanks in advance.

Hello again.
Can I use this adapter http://www.noswizard.com/nitrous-ancill ... f-tee.html to install pressure gauge directly on the 20oz bottle?
My current bottle has 5mm outlet port (it accepts 5mm olive nut).
Does it use 1/8BSP thread on the valve side?

Yes, you can use that adapter at the bottle valve. You'd have to remove the 5mm adapter from the valve and relocate it to the tee adapter and the tee adapter to the valve. The downside to this method is that if you have to switch to a spare bottle, then you will not have the sensor unless you transfer it over and that will take up a lot of time to cure any sealers.

Alternatively, you can use a remote mount setup that will allow you to install the sensor anywhere on the bike by splicing into the supply line. This will allow you to switch bottles with ease since the sensor isn't held hostage by the valve.
http://noscraftnitrous.com/nitrous-gauge-dash-mount-kit/

Thank you, Alex!
My idea is to mount pressure gauge (not transducer) directly to the bottle.
I don't have any spare bottles at the moment
But I guess, that I can just use the valve with this gauge on some spare 20oz bottle (when I will have it).

I also have a dash mount kit with T-piece, that accepts 5mm olive nuts and 1/8''BSP-to-5mm adapter. I want to use it for mounting N2O transducer.
Fuel transducer will go to X-10 purge port with this adapter: http://www.noswizard.com/nitrous-ancill ... elbow.html
But I believe, that female should be BSP (not tapered).

Now I think I know all necessary threads:
X-10 inlet, outlet and purge ports - 1/8'' BSP female.
20oz Bottle valve outlet port - 1/8''BSP female.
Transducers - 1/8''BSP male.

As far as I understand, I can use any adapter/t-piece with 1/8''BSP or 1/8''BSPT male thread.


Update:
Can I use these adapters in N2O line? It looks like they work with 80 bar
http://catalogue.camozzi.com/Explorer.a ... pe=Content
http://catalogue.camozzi.com/Explorer.a ... pe=Content

They would appear to work for 1/8 fittings, but not for use with the supply line nuts and olives.

Hello again!
It is time for wiring





I have one question about connecting WB2 to MaxExtreme.

WB2's manual says:



Does it mean, that white/violet wire from WB2 should be connected to Max's R2/R3 system ground?

It appears that they want that wire to be connected to the negative (return) part of that circuit. The max ex needs only the 0-5v input, so you can just ground that other wire and see if it works.

Guys from DynoJet say:




So, I have wrote to technical@noswizard.com to clarify this moment.

Alex, you wrote that it is better to connect Neutral sensor output to Maxi (it will make Maxi to understand gear shifting better), but I didn't find any settings in Maxi's manual to set this up... Moreover I can't understand how old motorcycle's neutral sensor can help: it gives ground signal only between 1st and 2nd gear...

The other idea that came to me: try to use Maxi as a controller for additional fuel pump.
I am using separate fuel pump for NOS (it is connected directly to fuel pulsoid). My basic plan is to switch it on simultaneously with all NOS system (like pulsoids). Since I didn't use any reverse valve (my fuel tank doesn't have any reverse line) i thought it would be nice to turn it on/off based on some fuel pressure ratio (I belive Maxi should know it via fuel transducer).
What do you think about this idea? Is it possible (via L5/L10 outputs)? I didn't find any option to activate L5/L10 based on fuel pressure ratio...

The only possible issue is how quickly the fuel pump builds pressure when the system is on. If the pressure is too low for the Maxy to fire, then it could result in a laggy system. I haven't tried such a setup, so you can test it and post results.


Also, the maxy only uses the input signal because it has it's own ground. I have an AEM AFR meter and it outputs through 1 wire and it reads the 0-5v just fine.

1) About fuel pressure:

I want to add 30hp.
For fuel line I am using additional low-pressure pump (Pierburg 7.21440.53.0) that should produce 0.15 bar (~2.2 PSI).
As far as I understand from manual, to gain 30 hp I should start with:
- 60 Nitrous jet
- 120 (?) fuel jet

At the moment I am choosing between:

-compulsory additional fuel pump activation (via NOS arming switch). This is my primary plan, but I don't like it, because I will need always to think about turning it off in time...



- fuel tank modification (weld reverse input) + adding a reverse valve to additional fuel line. But I don't know how to detect correct PSI ratio that shouldn't be exceeded (exceeding this PSI should activate reverse valve and drop off excess pressure back to the tank).

- building "smart" cut-off schema (via Maxi). But I can't find any option for AUX output that is based on fuel pressure ratio...
And I am not sure about jet sizes/PSI ratio for my scenario...



2) Neutral sensor
Cant you please point me which option and where should I choose for correct Maxi setup.
My sensor gives ground only in neutral position between 1st and 2nd gears...


Thanks in advance.

Hi Mike,

Easy to clarify for you and anyone else who comes across this situation. The White/violet ground reference needs to connect to terminal R2 or R3 which are the system (reference) grounds for the max. The Violet wire needs to go to R14.

Kind Regards
Dave

Good to know there, Dave.

Hello again

Some new questions...


1) Transducer power supply
I have this transducer came with my NOS kit:



It's written that it should be powered with +5 VDC.
But all wiring diagrams said that I should power it with R1 Maxi's output, which in turn have +12VDC output...
So where is the truth? Which Maxi's output should I use for Transducer's power supply? R4/R5?


2) Pipe wiring from D-Block to Jets

I have made this:





The nitrous's pipes are longer than fuel's pipes. Is it OK?
Is this pipe's routing correct?

3) Neutral sensor to R11
I still didn't get this thing...
Is there any need for connection of my neutral sensor to R11 ?



Thanks in advance...

Hi Mike,

1. The sensors have been changed since the Max instructions were created. Thank you for pointing out the discrepancy, we will get on to updating the instructions to prevent confusion in future. The sensor you have can be connected to R4 or R5 +6v output. The sensor is stamped with 5v but the specs actually allow it to run at 6v so is fine to connect to.

2. The pipe routing is great, good job on understanding the principals of equal length. The fact that the Nitrous are longer is a good thing. They will apply a small mechanical delay on the Nitrous side which is good for getting the fuel there at the same time. If the delay isn't quite enough the max has a delay feature to do the same thing electronically to minimize lean spikes on launch.

3. R11, I'm afraid the max cannot work with a ground signal between gears. The max needs a unique voltage for each gear that it is in to recognize the gear for correct map to be used.

If you need any more help just let us know,
Kind Regards
Dave

Hello again.
My building is nearly finished.
We have completed all wite/nitrous routings and interconnecting.







Now it is an engine RUN-IN period on a dyno.



I have met several problems with Maxi:

1) Fuel transducer shows 16 psi on a empty line
2) N2O transducer shows 460 psi on a empty line

Is those values are OK? Should I just correct them in "Input calibration" menu?

3) AFR gauge shows AFR value and it and doesn't change during working with throttle.
I have two lambda installed (one for WB2 and one for Dyno run).
Dyno's lambda shows that AFR ratio is changing, so I am sure, that AFR gauge shows incorrect values.
Can this be the result of connecting WB2 White-Violet (AFR ground reference) to Maxi system ground?

Poroblem 3 solved - it was faulty O2 sensor
It’s a pity, because it came with wideband, brand new...

Sorry to hear about the faulty sensor. It should have some sort of warranty for a replacement.

The fuel and nitrous sensors can be calibrated as you stated in the 'input calibrations' menu. I have an older unit that has physical pots and I suspect that the digital adjustment will be better. You are getting close, my friend!

Hello again
Run-in period is over and carburetor is nearly tuned.

I have annoying problem with N2O sensor:



I used tee block from gauge to integrate it and adapter M10x1 <-> 1/8'' BSP

The problem of those sensors is that they have 1/8'' BSPT thread, so it cannot be inserted in a way to push seal ring enough.
I tried to use thread sealant and to add additional seal ring (I putted 5!!! seal rings inside adapter in my last attempt) and it still leaks.

What else can I do? Try another/additional adapter with tapered thread?

You need to contact the wizards to get the correct adapter for the sensor. They will fix the issue you’re having.

Enquiries@noswizard.com

Hi! There was a pause in building process because of workshop relocation.
But we are on our way again

I have fixed the issue with sensor adapter by re-machining it.



The problem was on the top side of sensor connection: despite both adapter and sensor had same thread (1/8 BSPT), adapter has a base cone inside, that didn't allow to seal fit properly.
We have made flat base inside adapter with CNC and made an aluminum seal:




JFYI - it works properly now.


I am trying to solve another problem at the moment and I need your advice: fuel reverse line.
My fuel line at the moment looks as follows:



I am using stock fuel pump for carburetor fuel supply.
For N2O fuel line I am using additional fuel pump - Pierburg 7.21440.53.0
It is a low-pressure fuel pump with sliding vane pumping stage.
It's system pressure is 0.15 BAR (2.2 PSI).

My current schema assumes that after arming switch being activated, additional fuel pump begins to pump
This means that pressure between add. fuel pump and fuel solenoid will always increase until activation switch is turned on. And this also means that I should always keep in mind, that I should turn activation switch during ride from time to time.

What I actually want:



I have already made reverse intake in my fuel tank.
I want to add additional reverse valve between add. fuel pump and fuel solenoid that will drop off fuel back to fuel tank in case if pressure will exceed set value.

My problem is that I can't find any suitable reverse valve for low pressure systems. Majority of cars use built-in valve in it's carburetors.
The only similar valve seems to be used in Skoda/Volkswagen
Part number: 049 127 177 C



Do you have/know any appropriate solution for this problem?
May be there are some options form WON?

Thanks in advance. Mike.