FoxRacing500r-delete

I am getting a used Tmaxx that has been ran with 20% nitro fuel.Can I switch to 10% or do I have to rebuild for that?.I dont wanna run 20 due to overheating.So what do I do?.I need help bad,cuz she is coming in tuesday and I need to test her.

spazzyfry123

You can, but it will not run as well as it did with the 20% because that is more than likely what it was broken-in on. Also, you will have to rebuild it sooner as well because with a new type of fuel, the piston and the sleeve will not fit the same as it did before you changed.

FoxRacing500r-delete

I just dont wanna run my engine hott.I heard it isnt good and I dont have a temp gun.

spazzyfry123

What engine is it? My Fantom will only run good when it's running at least 300. IT all depends on the engine you have to how hot you need to be running. You might as well get a temp gun, it helps. You can buy one off of one the ads here at rcuniverse for about $30 or something.

FoxRacing500r-delete

Stock 2.5 with a half gallon through it.

Nitroaddict

please disregard spzzfry's comment. here is the correct low down.

Switching from 20% to 10% is just fine. You will need to re tune the engine slightly, by going a bit leaner on both needles. Other than that, everything is fine, and you will experience no more or less wear than previously, and no modifications or rebuild is required.

Note however, that running 20% will make the engine COOLER than 10%, not the other way around. If you are worried about temps, go with 20%, richen it up a bit more, and you will be happy. If you don't have a temp gun yet, get one ASAP - I have seen you on the forums for a while now, so you have been involved with RC long enough to warrent the purchase.

spazzyfry123

Oh, I said what I said because I switched and that's what happened to me. I guess I had a problem right before I switched or something. Sorry Fox, did not mean to lead you in the wrong direction[].

ericheller

ive always heard that higher nitro content makes the engine run cooler. maybe you should try 25% if the engine can handle it. and also ive been told that you shouldnt go to a lower nitro level unless you change the piston and sleve, but maybe thats just my engine.

FoxRacing500r-delete

Thanks NitroAddict.Whenever I see that you answer a post I know it is right.So 20% is cooler.Darn on the boards everyone said run 10%,cuz it will not overheat as much.So Just use 20% and it wont over heat bad?

spazzyfry123

That's what I was saying, but Nitroaddict proved me wrong. Maybe Nitro's wrong mwuhahahaha.

ericheller

less nitro content also equals less power. id care more about the power if i was you. but as nitro said you should get a temp gun, i dont drive my truck without it in my pocket, plus its fun to go around measuring tempatures of everything instantly.

schaumie2222

My Feedback: (1)

supposedly the traxxas top fuel is the best thing made for the TMAXX...try it

FoxRacing500r-delete

What is a nice accurate temp gun?

spazzyfry123

www.tempgun.com This may not be the most accurate temp gun, but it gives the temps close enough. The most accurate ones cost up in the $100's, this one only costs $35. I think I'm gonna get the Venom on-board temp gauge, that sound like a good plan?

jefx

Yes, a good plan. Their cheap, accurate, and give constant temp, plus you won't have to lug around a temp gun along with your starter and/or igniter.
I mounted my on-board temp guage to my roll bar just under the body, and cut out a small "window" so I can see the temp every time I drive by my feet.

Nitroaddict

Fox - Just running a higher nitro content will not lower engine temps. Actually, it will raise them, as the engine will run leaner. You need to righen up the engine when you run a higher nitro percentage. A properly tuned engine, however, will run cooler with higher nitro content.

I use a venom temp gauge on one of my cars and also have a gun. I have noticed that the venom temp gauge isnt very accurate, although it does err on the high side, so at least that is safe. I have always used a Raytek gun, but they are expensive. I recently ran it over with my full size car and purchased the Carelson Tuning version. It has proved flawless, is garunteed forever, and was about 25.00 cheaper - about 65.00

ericheller

i have a duratrax(ya i know its not my favorite company) temp gun and it seems ok. it is fairly acurate and can be calibrated i think. for $32 its a good temp gun.

spazzyfry123

Nitroaddict-what do you mean with the err? Does that mean it showed error whenever it hit the highs? Also, do you have a link or anything to the Carelson stuff?

Nitroaddict

I mean that it didnt read accuratly, but when it was off, it was off high. rather that than reading a temp an saying it was lower than it was. You can get the Carleson Tuning version at Towerhobbies.

spazzyfry123

Oh ok, thanks.

FoxRacing500r-delete

Hey Nitro I know I am not the best Rcu Guy but hey who is?,I was wondering how do you become a Moderater?.I am interested because I am always online and have nothing to do.lol.Please respond with any info [sm=lol.gif] By The Way,is there any girls on Rcu or is it a mans board?.

Nitroaddict

If you are interested in becoming a moderator, PM RCadmin and inform im of your qualifications, past experience, and any other relevant information. He will contact you if he is interested in persuing it further. There are several girls here on the forums, you just have to know where to look. )

*Crash*Johnson*

My Feedback: (7)

to throw in my 2 cents..

I went to Radio shack and bought the little hand held one (was only 25 bucks at the time). Works like a champ!
My bro wanted one and when I went back they were 49 bucks.
Tower sells the duratrax handheld one:



for $24.99. Unless you bash once a year I'd say it is one of the first things to purchase. Personally I avoid the in car ones, as I hear they aren't as accurate (wire around the head vs pointing at the glow plug).

http://www2.towerhobbies.com/cgi-bin...?&I=LXEMG5&P=7

hurry up and buy one

jefx

The inaccuracy of the on-board ones may very well be. But you should only use temp as a guide in tuning, and not as the whole. You should tune for performance, and use the temp to notice any changes that you've made. In that case, the on-boards are just as effective as the hand-helds, and you'll have less to carry.