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forums.rcpitstop.com  |  In The Pits  |  Nitro talk  |  Nitro fuel
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Author Topic: Nitro fuel  (Read 5046 times)

Offline golddragoner

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Re: Nitro fuel
« Reply #15 on: April 17, 2006, 07:04:31 PM »
The problem that most of you don't realize is that not all of the nitro is burned. Look at a car engine, its only aboue 20% efficent at making power. The rest goes into heat, unburned fuel cooling the engine, and exhaust gas. The only reason they probably say it runs hotter is cuz they run it leaner.

Offline Jimboman12

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Re: Nitro fuel
« Reply #16 on: April 19, 2006, 01:47:48 AM »
higher nitro=cooler cause you can run your engine richer because of the higher nitro content so a engine runing 30% can run richer than a engine runin 20 and still produce the same power i think
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Offline Wise-Guy

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Re: Nitro fuel
« Reply #17 on: April 19, 2006, 11:50:14 AM »
i think 30% gives more power than 20%.
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Re: Nitro fuel
« Reply #18 on: April 19, 2006, 09:49:33 PM »
higher is cooler, i know from experience. also a hell of alot more power, my rs4 now does burnouts. but shorter run times and fuel is more expensive.

Offline Wise-Guy

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Re: Nitro fuel
« Reply #19 on: April 20, 2006, 10:41:44 AM »
true, the gas gets burned so fast. when i was running my 3.3, i was also running 30% top fuel, they said at least 10-15min of play, i timed how long i could run the car, only 5min.
-Traxxas Jato w/TRX 3.3
-Traxxas Revo w/Ofna Picco .26 MAXX Big Block
-Team Losi Mini-T w/Mamba 25

-'88 E24 BMW M-Technik 635CSi (Euro-Spec)
-'90 E30 BMW 325i Sedan x2
-'92 E36 BMW 318i Sedan

Too many friggin' toys!

special_k

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Re: Nitro fuel
« Reply #20 on: April 22, 2006, 02:43:56 AM »
then your either running waaaaaay too rich of you have it at full throttle all the time...which is not good!! with 30% im running about 12min run times, with 20% maybe just over 15 mins

Offline Wise-Guy

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Re: Nitro fuel
« Reply #21 on: April 22, 2006, 11:18:43 AM »
prolly is running too rich  :-\ i gotta check
-Traxxas Jato w/TRX 3.3
-Traxxas Revo w/Ofna Picco .26 MAXX Big Block
-Team Losi Mini-T w/Mamba 25

-'88 E24 BMW M-Technik 635CSi (Euro-Spec)
-'90 E30 BMW 325i Sedan x2
-'92 E36 BMW 318i Sedan

Too many friggin' toys!

Offline Eric

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Re: Nitro fuel
« Reply #22 on: August 15, 2006, 08:40:17 PM »
This is straight from r/b.The .28 engines can be used up till 25% nitro without making any modifications to the engine.
The .21 engines can be used up till 25% nitro without making any modifications to the engine.
The .15 engines can be used up till 25% nitro without making any modifications to the engine.
The .12 engines can be used up till 16% nitro without making any modifications to the engine.
If after you would like to use the engine with a higher nitro content(which will bring you more power but makes the setting of the engine also more delicate), then it is needed to add an additional head-shim of 0.1mm of each 5ยจ% of nitro content more in the fuel.

Another important information is that the more nitro you use the more the engine is stressed and so you need to be more careful with your carburetor settings...

Offline Dr.traxxas

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Re: Nitro fuel
« Reply #23 on: January 02, 2007, 06:38:58 PM »
so is it ok if i runn 33% with my t-maxx with a 2.5 ??? and can i switch to 20 % ??

Offline Wise-Guy

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Re: Nitro fuel
« Reply #24 on: January 03, 2007, 12:27:16 AM »
so is it ok if i runn 33% with my t-maxx with a 2.5 ??? and can i switch to 20 % ??

It'll be ok to run 33% in your T-Maxx 2.5, but your going to have make it more Richer, because it'll get pretty hot >:D. And your going to have to re-tune your motor back, if your going to run 20%. I ran 33% in my Jato 3.3 8) But then I got a new 3.3, still haven't broken it in. But I normally run Traxxas 20% Top Feul (good feul) in my Revo's Picco .26, and the rest of my Nitro's.
-Traxxas Jato w/TRX 3.3
-Traxxas Revo w/Ofna Picco .26 MAXX Big Block
-Team Losi Mini-T w/Mamba 25

-'88 E24 BMW M-Technik 635CSi (Euro-Spec)
-'90 E30 BMW 325i Sedan x2
-'92 E36 BMW 318i Sedan

Too many friggin' toys!

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Re: Nitro fuel
« Reply #25 on: January 03, 2007, 12:23:05 PM »
I am lazy and run 30% in everything without shims. Used to be an issue long ago, but I haven't blowed up a motor in a long time... I don't use after run unless I store a motor...

and this time around I plan on buying a case of Werks fuel so I have lots on hand

Offline Dr.traxxas

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Re: Nitro fuel
« Reply #26 on: January 04, 2007, 01:09:10 PM »
i know this is off topic but still LOL is 3 gallons and four tanks good for the trx 2.5 engine of running 33% cause i just blew my engine???

Offline Evil Klownz

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Re: Nitro fuel
« Reply #27 on: January 04, 2007, 01:17:10 PM »
i know this is off topic but still LOL is 3 gallons and four tanks good for the trx 2.5 engine of running 33% cause i just blew my engine???

It's not bad for a rtr engine....5-6 gallons is the norm.....
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Offline Dr.traxxas

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Re: Nitro fuel
« Reply #28 on: January 04, 2007, 07:27:15 PM »
hmm what am i doing wrong    :-\

Offline Evil Klownz

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Re: Nitro fuel
« Reply #29 on: January 04, 2007, 09:56:29 PM »
hmm what am i doing wrong    :-\

Nothing really, RTR engines are a different breed. They are built with cheaper material to keep cost down. I always check temp, tear down and clean. I've killed  $500 race engines in 2 gallons, I've also gone 10-12 gallons before piston sleeve swap.

And if its you're first nitro, then is a learning curve.....
Durango SC410R, Kyosho Lazer zx-5 SP

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