R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road

Reply
 
Thread Tools Search this Thread
Old 08-26-2010, 09:37 AM   #1
Tech Fanatic
 
jwm2's Avatar
 
Join Date: May 2010
Location: Grand Rapids, MI
Posts: 823
Trader Rating: 5 (100%+)
Default Nitrotane Copper Stain?

I've been running nitrotane 30% racing fuel through my engines for a few weeks now and am noticing a copper tarnish or stain on the piston, head button and glow plugs. Is this normal? I bought the fuel because it was on sale ($19.99 a gallon) about a month ago while i was on vacation. I really like the fuel but am wondering if this is normal or something to worry about. Any feedback is appreciated.
jwm2 is offline   Reply With Quote
Old 08-26-2010, 09:41 AM   #2
Tech Master
 
pyromania's Avatar
 
Join Date: Feb 2009
Location: North Hills, CA
Posts: 1,283
Trader Rating: 18 (100%+)
Default

Quote:
Originally Posted by jwm2 View Post
I've been running nitrotane 30% racing fuel through my engines for a few weeks now and am noticing a copper tarnish or stain on the piston, head button and glow plugs. Is this normal? I bought the fuel because it was on sale ($19.99 a gallon) about a month ago while i was on vacation. I really like the fuel but am wondering if this is normal or something to worry about. Any feedback is appreciated.
It's just the oil.
__________________
Jesse Carrillo
Team Driver For:
TLR | Horizon Hobby | Nitrotane | Spektrum | HandleITHobbies | 818 Designs
pyromania is offline   Reply With Quote
Old 08-26-2010, 09:43 AM   #3
Tech Master
 
Join Date: Dec 2008
Location: So Cal
Posts: 1,696
Default

__________________
-TKO Competition Development-Sidewinder Fuel-
Alan D. is offline   Reply With Quote
Old 08-26-2010, 09:46 AM   #4
Tech Fanatic
 
jwm2's Avatar
 
Join Date: May 2010
Location: Grand Rapids, MI
Posts: 823
Trader Rating: 5 (100%+)
Default

Oh ok so nothing to worry about then. Good to know. I googled it for about 20 minutes and didn't really come up with anything and nothing that pointed to the oil in the fuel. I like it and will continue to use it
jwm2 is offline   Reply With Quote
Old 08-26-2010, 02:22 PM   #5
Tech Elite
 
ScottyM's Avatar
 
Join Date: May 2009
Location: Miami OK
Posts: 3,149
Trader Rating: 27 (100%+)
Default

All fuels leave this residue behind with a properly tuned motor.. It is a good idea to clean it off once in a while.. But it being there is normal..
__________________
Scott Musgrave
ScottyM is offline   Reply With Quote
Old 08-26-2010, 02:45 PM   #6
Tech Addict
 
pntmachine's Avatar
 
Join Date: Apr 2008
Location: Tampa Bay, FL
Posts: 506
Default

mmmmmmmm cinnamon bun! perfect
__________________
Agama USA/ VP Pro USA
Agama 215/ RBMods Novarossi Plus4C/ Savox
Kyosho STRR Evo2/ RBMods P5XLT/ Hitec
Team Byrons Racing Fuels
pntmachine is offline   Reply With Quote
Old 08-26-2010, 02:56 PM   #7
Tech Fanatic
 
jwm2's Avatar
 
Join Date: May 2010
Location: Grand Rapids, MI
Posts: 823
Trader Rating: 5 (100%+)
Default

I've never encountered it with other fuels such as o'donnell or blue thunder. In fact o'donnell usually leaves no residue at all. How do you clean it off? I've not been able to get anything to touch it, i've tried carb cleaner, nitro cleaner, etc.
jwm2 is offline   Reply With Quote
Old 08-26-2010, 03:02 PM   #8
Tech Addict
 
pntmachine's Avatar
 
Join Date: Apr 2008
Location: Tampa Bay, FL
Posts: 506
Default

Denatured Alcohol is what I use.
__________________
Agama USA/ VP Pro USA
Agama 215/ RBMods Novarossi Plus4C/ Savox
Kyosho STRR Evo2/ RBMods P5XLT/ Hitec
Team Byrons Racing Fuels
pntmachine is offline   Reply With Quote
Old 08-26-2010, 03:31 PM   #9
Tech Master
 
pyromania's Avatar
 
Join Date: Feb 2009
Location: North Hills, CA
Posts: 1,283
Trader Rating: 18 (100%+)
Default

Quote:
Originally Posted by jwm2 View Post
I've never encountered it with other fuels such as o'donnell or blue thunder. In fact o'donnell usually leaves no residue at all. How do you clean it off? I've not been able to get anything to touch it, i've tried carb cleaner, nitro cleaner, etc.
What's the point of removing it? Unless there is carbon build up, there is no need the clean the oil off.
__________________
Jesse Carrillo
Team Driver For:
TLR | Horizon Hobby | Nitrotane | Spektrum | HandleITHobbies | 818 Designs
pyromania is offline   Reply With Quote
Old 08-26-2010, 03:41 PM   #10
Tech Fanatic
 
jwm2's Avatar
 
Join Date: May 2010
Location: Grand Rapids, MI
Posts: 823
Trader Rating: 5 (100%+)
Default

2 posts above mine someone said its a good idea to clean it off once in awhile. So i figured i'd ask. I'm not too worried about it now, but eventually i wouldn't mind being able to remove it.
jwm2 is offline   Reply With Quote
Old 08-26-2010, 04:41 PM   #11
Tech Master
 
pyromania's Avatar
 
Join Date: Feb 2009
Location: North Hills, CA
Posts: 1,283
Trader Rating: 18 (100%+)
Default

Quote:
Originally Posted by jwm2 View Post
2 posts above mine someone said its a good idea to clean it off once in awhile. So i figured i'd ask. I'm not too worried about it now, but eventually i wouldn't mind being able to remove it.
I have a feeling that he meant carbon build up on the piston. The only time I've seen the insides change to the copper color is when breaking in a motor or running it rich. Since there is alot of oil flowing through the engine that copper color will be there. Once you run a race tune through it for a while the color will start to disappear.
__________________
Jesse Carrillo
Team Driver For:
TLR | Horizon Hobby | Nitrotane | Spektrum | HandleITHobbies | 818 Designs

Last edited by pyromania; 08-26-2010 at 05:17 PM.
pyromania is offline   Reply With Quote
Old 08-26-2010, 04:57 PM   #12
Tech Fanatic
 
jwm2's Avatar
 
Join Date: May 2010
Location: Grand Rapids, MI
Posts: 823
Trader Rating: 5 (100%+)
Default

Ahh ok. I have been running abit rich to break in my engines, i've started leaning just this week so we'll see how it goes. I'm not worried but the first time i seen it, i was abit shocked
jwm2 is offline   Reply With Quote
Old 08-26-2010, 05:14 PM   #13
Tech Master
 
pyromania's Avatar
 
Join Date: Feb 2009
Location: North Hills, CA
Posts: 1,283
Trader Rating: 18 (100%+)
Default

Quote:
Originally Posted by jwm2 View Post
Ahh ok. I have been running abit rich to break in my engines, i've started leaning just this week so we'll see how it goes. I'm not worried but the first time i seen it, i was abit shocked
Just get some more fuel through your new motor and it'll go away.
__________________
Jesse Carrillo
Team Driver For:
TLR | Horizon Hobby | Nitrotane | Spektrum | HandleITHobbies | 818 Designs
pyromania is offline   Reply With Quote
Old 08-26-2010, 10:45 PM   #14
Tech Elite
 
ScottyM's Avatar
 
Join Date: May 2009
Location: Miami OK
Posts: 3,149
Trader Rating: 27 (100%+)
Default

Quote:
Originally Posted by pntmachine View Post
Denatured Alcohol is what I use.
Or fuel..

Quote:
Originally Posted by pyromania View Post
What's the point of removing it? Unless there is carbon build up, there is no need the clean the oil off.
I am assuming there is carbon..
__________________
Scott Musgrave
ScottyM is offline   Reply With Quote
Old 08-27-2010, 12:38 AM   #15
Tech Master
 
neobart's Avatar
 
Join Date: Jan 2010
Location: Denmark
Posts: 1,413
Trader Rating: 4 (100%+)
Default

All fuels that contain castor oil will leave a light brown colour inside the combustion chamber. I would describe it as being a light chestnut brown, and it just means you have a good tune on the engine.
__________________
Clockwork Racing Engines
neobart is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 12:59 PM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net