R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 09-15-2006, 02:03 AM   #1
Tech Addict
 
downunder23's Avatar
 
Join Date: Oct 2005
Posts: 618
Default engine temperature any one??

hi i have just recently bought a .21 engine for my buggy (gs bo3) and using my temp guage it read a maximum temperature of 140 degrees centergrade or celcius give or take, is that a good running temperature?
also what is the average temperature range for a nitro .21 engine and/or whats the max temperature it could reach with it still being with in a safe temperature level without it being over heated.

and finally what temperature is over heated?
sorry for the newb questions but i need to know so i can make sure it dont overheat.
thankyou.
downunder23 is offline   Reply With Quote
Old 09-15-2006, 09:05 AM   #2
Tech Champion
 
R40Victim's Avatar
 
Join Date: Jan 2005
Location: N.W. FL___L.A.___Lower Alabama
Posts: 7,823
Trader Rating: 1 (100%+)
Default

If you can get that guage to display in Fahrenheit, then I can help you. Anyone else in here speak metric? In fahrenheit, 220 to 240 is average operating tempurature, but some motors run just fine hot, in the 260-270 range. I keep reading magizine articles saying to tune by performance, not tempurature. If that's the way you do it, you risk cooking the motor...
R40Victim is offline   Reply With Quote
Old 09-15-2006, 09:51 AM   #3
Tech Elite
 
Join Date: May 2003
Location: Northern & Central Illinois
Posts: 4,337
Trader Rating: 1 (100%+)
Default

Not really. An engine running lean will not have good performance. A properly tuned engine will be in between 210 to 290 F (99 to143 C) and optimally it will be around 250 F +/- 20 (120 +/- 6 C). It all depends on the engine, air temperature, track conditions, driving style, fuel, glow plug, etc. so you can see there are many variables to consider. Therefore if it preforms well, exhibits a smoke trail on acceleration and doesn't load up or bog down then you're in the right range.
AreCee is offline   Reply With Quote
Old 09-15-2006, 11:19 AM   #4
Tech Addict
 
SpeedBump57's Avatar
 
Join Date: Aug 2005
Posts: 660
Default

AreCee

I came in here to answer his question but you said exactly what I was going to say.

Listen to AreCee as he is spot on!
SpeedBump57 is offline   Reply With Quote
Old 09-15-2006, 12:29 PM   #5
Tech Regular
 
Nitroaddicts's Avatar
 
Join Date: Jul 2006
Posts: 328
Trader Rating: 8 (100%+)
Default

yup.
__________________
www.NITROADDICTS.com
Get Free T-Shirts with Nitro Points!
-------------------------------------
Need Track TShirts?
http://www.facebook.com/AmericanGFX
Nitroaddicts is offline   Reply With Quote
Old 09-17-2006, 06:51 AM   #6
Tech Addict
 
downunder23's Avatar
 
Join Date: Oct 2005
Posts: 618
Talking

ok thankyou very much for your replies it helps alot i just ran my races this weekend and it got to 143 degrees celcius or around the 270 farenheight so it seems to be running well i just cant go any richer now the tune is right, it was funny because my first race i ran real rich to cool it down and it ran out of fuel from being too rich so i guess this engine just needs to run a little hot for the best performance. thanks once again..
downunder23 is offline   Reply With Quote
Old 09-17-2006, 09:22 AM   #7
Tech Master
 
Join Date: Jan 2005
Location: SE PA
Posts: 1,547
Trader Rating: 10 (100%+)
Send a message via AIM to GroffBall
Default

My philosophy which some people consider crazy is as long as its under 300* F and is still smoking its fine.
GroffBall is offline   Reply With Quote
Old 09-18-2006, 12:15 AM   #8
Registered User
 
Join Date: Sep 2006
Location: kilimanjaro
Posts: 89
Default

As long as the engine runs strong
COREX is offline   Reply With Quote
Old 09-18-2006, 08:22 AM   #9
Tech Master
 
tex1's Avatar
 
Join Date: Jan 2005
Location: Dallas, Texas
Posts: 1,156
Trader Rating: 4 (100%+)
Send a message via Yahoo to tex1
Red face

If you are having problems with run time, you might try restricting the carb and changing your exhaust. Sounds like the motor is not flowing right.

What combination are you running? What conditions?
TEX
__________________
www.indyrcworld.net
Indy RC World 2.0 - Garland, TX
T&T RC Cars - Plano, TX
(972) 271-4844
tex1 is offline   Reply With Quote
Old 09-18-2006, 02:41 PM   #10
Tech Elite
 
BSchorr's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jun 2004
Location: Sioux Falls, SD
Posts: 4,820
Trader Rating: 92 (100%+)
Send a message via AIM to BSchorr Send a message via Yahoo to BSchorr Send a message via Skype™ to BSchorr
Default

turn all the needles in all the way and go full throttle, you should be fine! whats wrong with 500 degrees!?
__________________
Proline ~ Genesis R/C Products ~ First Premier Satellites
BSchorr is offline   Reply With Quote
Old 09-18-2006, 11:19 PM   #11
Tech Addict
 
downunder23's Avatar
 
Join Date: Oct 2005
Posts: 618
Default

i am using an sh max torque 2 pc pipe and the conditions were about 22 degrees celcius wheather was sunny as it is spring here its getting hotter so its not too hot but warm on a quite small sort of a track with medium bumps nice traction bit dusty smoothish but bumpy track with a nice straight to only just get to max speed then a right hand turn so there you go should cover it.

thats what the engines up against i managed to lean it out with good response reaching 134 deg celcius still with fuel left in tank after 5 min heat.
downunder23 is offline   Reply With Quote
Old 09-18-2006, 11:21 PM   #12
Tech Addict
 
downunder23's Avatar
 
Join Date: Oct 2005
Posts: 618
Default

oh and bschorr i tried that and the engine blew up can you pay for a new one? j/k
downunder23 is offline   Reply With Quote
Old 09-19-2006, 08:10 AM   #13
Tech Master
 
killer89's Avatar
 
Join Date: Jan 2005
Location: South OC
Posts: 1,598
Trader Rating: 41 (100%+)
Send a message via AIM to killer89
Default

As long as the engine ran well with good smoke, I didn't worry about the temperature. Yes, I still checked my engines to make sure they were up to temp and etc before tuning, but other than that and the occasional temp, no.

I had the older GS B01 engine at one point. It ran really well at about 320-335, so thats where I ran it. The engine lasted plenty long that way.
killer89 is offline   Reply With Quote
Old 09-20-2006, 03:04 AM   #14
Tech Addict
 
downunder23's Avatar
 
Join Date: Oct 2005
Posts: 618
Default

cool killer that makes me a bit relieved hearing that due to you having the gs bo1 how did it idle? was it a loud idle or quite and soft? mine sounds like it wants to get up and go a little whilst idling but the car doesnt move then it retires into a slower softer sounding idle which will then stop after a little while of sitting there i dont mind it doing this so long as it has that time frame before the stalling, very painful when a car stalls on the start line 5 seconds before the start hehe......'ouch'.
downunder23 is offline   Reply With Quote
Old 09-20-2006, 01:57 PM   #15
Tech Master
 
killer89's Avatar
 
Join Date: Jan 2005
Location: South OC
Posts: 1,598
Trader Rating: 41 (100%+)
Send a message via AIM to killer89
Default

Quote:
Originally Posted by downunder23
cool killer that makes me a bit relieved hearing that due to you having the gs bo1 how did it idle? was it a loud idle or quite and soft? mine sounds like it wants to get up and go a little whilst idling but the car doesnt move then it retires into a slower softer sounding idle which will then stop after a little while of sitting there i dont mind it doing this so long as it has that time frame before the stalling, very painful when a car stalls on the start line 5 seconds before the start hehe......'ouch'.

All that is that you are experiencing is the engine loading up at idle. With any engine with a properly tuned low-end, the engine will load up on fuel and die after you let it idle for a little bit.

A good way to test the low-end is to first tune the top end needle to 1/4 turn richer than max power, then clear the engine out and bring it to an idle. Immediately pinch the fuel line at the carb and it the idle should get faster and die in about 4-5 seconds. Any longer and its a tad rich. Any shorter or if the idle doesnt increase in speed, its too lean...

hope this helps
killer89 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Engine temperature steponit! Malaysian R/C Racers 27 12-14-2006 01:50 AM
Checking Engine Temperature gavinmetcalfe Electric Off-Road 5 03-31-2005 10:14 AM
Engine Temperature adsl Onroad Nitro Engine Zone 2 11-24-2004 10:02 AM
Engine Temperature CHANGES with fuel level? gonsped Nitro On-Road 7 01-04-2004 10:08 AM
Tuning Engine *temperature drive4fun Nitro On-Road 21 05-24-2003 11:13 AM



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 07:17 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net