R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro On-Road > Onroad Nitro Engine Zone

Reply
 
Thread Tools Search this Thread
Old 05-14-2004, 02:40 PM   #1
Tech Apprentice
 
TerraX's Avatar
 
Join Date: May 2004
Location: Sacramento, CA
Posts: 60
Send a message via ICQ to TerraX Send a message via AIM to TerraX Send a message via Yahoo to TerraX
Lightbulb Chilled Fuel

I posted this on a different board, but I think it's probably the most appropriate here.

Yesterday I was thinking about how the temperature of the fuel might impact performance. Does anyone know the effect of chilling the fuel before use? It would seem as though it may have a positive performance change.

Any ideas?
Chris
TerraX is offline   Reply With Quote
Old 05-14-2004, 04:34 PM   #2
Tech Initiate
 
DMACK's Avatar
 
Join Date: Mar 2004
Location: San Diego
Posts: 34
Default

Hot fuel is definately bad, it increases its evaporative rate. Ive never tried actually chilling it!?!

It might help with cooling initially, but in a relatively short time it would return to ambient temperature, or warmer due to engine heat. This might make tuning a little wierd.

You would probably have to insulate the gas tank in order to achieve any lasting effects.
DMACK is offline   Reply With Quote
Old 05-14-2004, 10:04 PM   #3
Tech Addict
 
Techart27's Avatar
 
Join Date: Nov 2003
Location: AC Schnitzer X5 w/ 22" ACS NorCal
Posts: 677
Default

LOL chilled fuel...never heard of that idea b4. But as stated on top- it would warm up really quickly.
Techart27 is offline   Reply With Quote
Old 05-14-2004, 11:11 PM   #4
Tech Apprentice
 
TerraX's Avatar
 
Join Date: May 2004
Location: Sacramento, CA
Posts: 60
Send a message via ICQ to TerraX Send a message via AIM to TerraX Send a message via Yahoo to TerraX
Default

Ahhh well. It was just a thought

I was thinking about what DMAC said. It would likely goof up the tuning of the engine later on in an event.

Chris
TerraX is offline   Reply With Quote
Old 05-14-2004, 11:59 PM   #5
Tech Elite
 
EdwardN's Avatar
 
Join Date: May 2003
Location: SoCal
Posts: 2,144
Trader Rating: 1 (100%+)
Default Re: Chilled Fuel

Quote:
Originally posted by TerraX
I posted this on a different board, but I think it's probably the most appropriate here.

Yesterday I was thinking about how the temperature of the fuel might impact performance. Does anyone know the effect of chilling the fuel before use? It would seem as though it may have a positive performance change.

Any ideas?
Chris
From my expirience can tell you-fuel has to be certain temperature ( pretty worm). Cooled down fuel will not evaporate at desired speed, but we always have to remember about resonble limits.
__________________
DISCLAIMER: Since 90% of my posts may be BS, and since my posts may be either insanely idiotic, incoherent, and/or not even close to a rational thought, please accord my posts no more than 10% of credibility.
EdwardN is offline   Reply With Quote
Old 05-15-2004, 03:09 AM   #6
Tech Regular
 
RayJ's Avatar
 
Join Date: May 2003
Posts: 445
Default Chilled fuel

Chilling Model fuel below 50 F is not a good idea. From talking to a company that mixes race fuel, the problem lies in the Castor oil that is in our model fuels. Below 50 degrees farenheit the castor oil will start going back into a solid state. The fuel will start to have little white or yellow flakes in it.
RayJ is offline   Reply With Quote
Old 05-15-2004, 05:24 AM   #7
Tech Fanatic
 
Julius's Avatar
 
Join Date: Oct 2003
Location: Amsterdam Netherlands
Posts: 977
Default

Also, if running a nitro restricted class where a nitromax is used, cold fuel will be over the limit quicker than warm fuel.

In high temperature you could add more nitro before the nitromax floats than in cold temperatures.
__________________
Team Serpent, Xceed, Sanwa, LRP
Julius is offline   Reply With Quote
Old 05-17-2004, 06:39 PM   #8
Tech Regular
 
SlobbaTech's Avatar
 
Join Date: Jun 2003
Posts: 423
Default

I tried running some cool/cold fuel before, can't remember how cold it was but was in a cooler for 20 minutes or so and felt cold. Motor ran cooler of course, also ran rich, ran the whole tank out to see if the tune would change any from the chassis, tank, etc.. warming up and it didn't change much at all throughout the tank. I don't think you would gain any power inscreases, maybe a slight mileage improvement b/c you would have to lean the motor back out for it to run good, but for how rich it was and how much slower from that the motor would have had same power as with non chilled out fuel, so I was over it and didn't run it anymore. If you did choose to run that at a race you would have a very difficult time keeping the fuel the same temp and the motor running the same from that b/c it's going in and out of the cooler and what are you going to do with a cooler in the pits, then chance of some water getting into the tank also. Too much headache and inconsistency I'd think.
SlobbaTech is offline   Reply With Quote
Old 05-19-2004, 01:25 PM   #9
Tech Adept
 
Join Date: May 2002
Location: Midwest
Posts: 147
Default

I think fuel works best when it's totally vaporized, I think your best performance would be when it's 'almost' hot enough to evaporate. Think about this; when you just about run out of fuel and you get that last 5 seconds of higher revs just from it leaning out (more air & less fuel => higher vapor content). I think you want your fuel plenty warm for the most power and efficiency! It's your electric TC motor you want to chill before the race.

-John
Luckyman4 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
O'Donnell Racing Fuel vs. R2R Fuel SKOT Nitro Off-Road 4 12-28-2007 07:34 PM
Tower Hobbies Power 20% nitro fuel VS Trinity Monster Brew 20% nitro fuel? needhelpPLZ? Nitro Off-Road 1 07-23-2007 06:01 AM
30% fuel motohead24 Electric Off-Road 14 02-08-2006 03:36 AM
<NEW> MONSTER TRUCK FUEL FROM MAXY'S PRO RACING FUEL !!!! <Maxy's> Nelson Racing Forum 0 11-08-2005 10:13 AM
Does O'Donnell fuel make a huge accel. gain on HPI fuel Smoke21 Nitro On-Road 3 05-03-2004 05:44 PM



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 11:08 PM.


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