tonytiger

i have a friend who went to a race with me one day ...he ran out of regular 30 percent fuel so he whipped out a gallon of cool power 30 percent heli fuel...i was skeptical at first but as the race day went on his engine got better and better...it smoked alot but seemed to have all its power and good temps in the 220 range...it kinda had me thinking.....

Conti027

lol i wouldnt know that. look where i live lol

RBMike

The only days he sees high humidity is when the track is under 6 inches if water. I don't miss Phoenix a bit.

Conti027

i HATE !!! Cali i lived there for a year and moved back,but i love AZ

damon jato

i run 25% in my motor and it runs really good so i dont see why i should change but if yous want to run 30% go for it, it may increase performance or decrease engine life but just use what you thinks best they are all good in my eyes i havnt tried 30% yet but from what ive heard 25% is enough.

RBMike

I'm not a big fan of Cali either but it's where I can make the $$. Also we race all year.

LSTVega28

Grow some and get the 30%? So are you indiacting that he has no balls because he's running 25%. Leave him alone and do what he wants to do. I run 30 btw.

911

I'm speaking from experience when i say higher nitro content does not increase temps, on the contrary, it alows you to run with richer needle settings for similar performace as someone running lower nitro%.
The more fuel u have going through the engine the more efficient the cooling.

rrusso

i dont think any 1 has ever won a race on 20%.every 1 runs 30%thus run what the pros run[>:]

RBMike

"i dont think any 1 has ever won a race on 20%.every 1 runs 30%thus run what the pros run"

NOT true

Before they sold Byrons 25% here I won a few races on 20% against guys running 30%. It's all in your left index finger (unless your left handed).

gtsum

Most every high end race mill is designed to run (and generally runs better) on 25 or 30% - I tried 20% for about 1/2 gallon and then switched to TQ 30% and have never looked back. Cooler temps (with the same amount of power) - tuning is a little touchier, but is well worth it

hkenvy91

i dont plan to run 30% till i get a new mill

the mill i have nowdoesnt respond well to 30% but runs great on 20%. me and gtsum tried mill out on 30% it wasnt good.

losilover

it probably needs to be shimmed for 30% if it wasn't running well on 30% then.

Codeblack

What would you guys say to breaking an engine in with 20% and right after a gallon, switch to 30%? Is that better than breaking in with 30% from start?

gtsum

You can do it (I have in the past), but that was because I decided to switch all my engines to 30% and never looked back. If you plan on running 30% in the mill, then I would break it in on 30%

Codeblack

yea, Ill just start with 30%. but why do some people prefer starting with 20% then switching to 30%, whats the reason for it?

SManMTB

None. They probably listened to bad advice online.

garrett3190

30% is all around better in my opinion... 30% actually gives you better performance and lower temps.

rrusso

rb mike pick up a rc driver mag and read it.every 1 runs 30 dude.duhh more power.i havent seen 1 article in the last 2 years about some 1 winning a BIG race on 20%.im not talking about at your local track either.ask a pro............most wins have come on the big 3
sidewinder30%,odoneals30%,and ofcourse byrons30%why in the hell would they run a fule that makes less power and more heat?how do you like thoes apples?

Codeblack

Am I reading this right? Why is sts saying to break-in with 5-15% nitro then switch to whatever? link here: http://www.stsrc.com.tw/download/21%...ual%20v3.1.pdf
scroll down to break-in procedure...

I dont get it

rrusso

more oil is better for break in procedures[8D]

Codeblack

not 5-15% oil but nitro... it completely fascinates me

rrusso

go 30 or go home crying

Codeblack

I agree, but sts manual is still pretty strange

Super_Dave

I have seen connecting rods break during break in due to the stress a new engine puts on the con rod. Using lower % nitro will lower the chance of that happening. Most engines have connecting rods that wont have any trouble taking 30% nitro during break in. SH (sts) has had connecting rod troubles in the past so thats probably why they tell you to use lower nitro % for break in. There is no reason other then broken con rods which would be a manufacture defect anyway with a weak con rod.