waterinjection.info - Nitromethane from RC Car Fuel?

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- - Nitromethane from RC Car Fuel? (http://www.aquamist.co.uk/forum2/vbulletin/showthread.php?t=431)

If you need nitromethane, I can provide some. It is 95 or 98% pure nitromethane. The other 2-5% are chemicals that are used to increase octane number and stability. Use prvt msg or +359 899772550

Has anyone done any more followup testing with the Nitromethane in any mixtures with methanol and/or water? I see on Google that it looks like there are some USA suppliers of pure Nitromethane at around $50/gallon. That doesn't seem too bad I guess.

Interesting results from your testing below Scott, but it looks to me like the results are largely due to the water only test being the leanest (closest to optimum) mixture. Does that seem true, or am I missing something? ? ?

Quote:

Originally Posted by sdminus

G max are really hard to buy from. You have to give them so many details.

Im gonna have to drop the nitro plans for now and tune with water meth.
I need to race in may and test in april.

In desperation i used 20% niro mix RC fuel. I was injecting with a map sensor driven ramp up in delivery. This was up to a peak of 4 GPH at full boost 1.10 Bar. ( boost varies from 0.98 bar to 1.10 bar) There was no noted gain from the logs.
I loged the following
100% water
100% Meth
50:50 water meth
10:74:18 nitro meth edl oil ( RC fuel)
20:70:10 nitro meth edl oil ( RC fuel)
And a contol measure with no injection
These were all logged at a peak fueling of 90% of 44GPH with a ramp to 4 GPH of additional mix

I used the same ramp on the same strech of track (LOL) on the same day at similar charge temps
The clear performance winner was 100% water which i was surprised about.
I didnt alter my tune for any of the runs,

I have the details of these logs. ( all apart from egt ) if any body wants further details let me know.

If i can get the pure nitro i will go for the 50:50 mix or a metered 100% nitro. ( 100% nitro would only give me 10% of my over all fuel in nitro )

I have other jets which total 8 GPH so far.

Scott

I have been working from some figures complied which indicate the max amount of water of water meth you can add to XX air temp and achieve good atomisation. Does anybody have details for nitromethane. In all the above tests i was injecting way to much mixture. I have simince done a 50:50 meth water tune and reduced my afrs to 11.8 afr. I am yet to get an egt to see the exact implications of this, However the previous AFR was in the mid to low 10's at 1.10 Bar

Just read the thread - wondering what the reason is for mixing water with the meth/nitro instead of just running 50/50 Meth/Nitro? To make it less dangerous?

Quote:

Originally Posted by ar design

Just read the thread - wondering what the reason is for mixing water with the meth/nitro instead of just running 50/50 Meth/Nitro? To make it less dangerous?

Disclaimer- I am not a chemist, well I may be a shade tree chemist.
What I have found:
50/50 Water Methanol will not burn.
Water chemically bonds very strongly with methanol.
Nitromethane kinda stays in suspension in methanol.
Water, added to a mix of nitromethane and methanol will bond with the methanol strong enough to displace the nitromethane.
You can mix (and it will stay mixed) water and methanol or nitromethane and methanol, but never water, nitromethane and methanol. (the water bonds too strongly to methanol)

Straight methanol is wicked for injection intake air temps, but will richen the A/F mixture.
Water cools the intake charge less than methanol, but suppresses detonation better than methanol.
Water methanol is a great combination.

Nitromethane burns at 2.5 units of air to 1 of nitromethane, because it creates oxygen when burned.
Methanol burns at 8 to 1.

A 40/60 nitro/methanol mix injection actually leans the A/F, but stops detonation as well.

Internal engine parts do not like nitromethane...
Spark Plugs go quickly with nitromethane, engines can go from too much raw liquid in the combustion area, or from too much power being made.

Nitromethane is very fun, but costly, no more so than Nitrous Oxide though.

50/50 water to methanol may not burn with a open flame in a saucer on your bench but it sure as hell burns at the right ratio mixed with air and under compression in a combustion chamber ;) you can see this is true by the effect it has an AFR when you measure it V's pure water.

Re: Nitromethane from RC Car Fuel?

After all these years ...... any news about nitromethane Richard?

Re: Nitromethane from RC Car Fuel?

I have not moved forward on this when all the wetted rubber parts just disintegrated. So I stopped. There is no plan to design a N/M system since the stuff is under very strict control due to terrorism.

See the destructive power of nitromethane on EPDM:

http://www.aquamist.co.uk/forum/nitro.jpg

Re: Nitromethane from RC Car Fuel?

I understand Richard. Thank you for your trials in regards!