R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 09-12-2010, 06:25 PM   #1
Tech Master
 
omarwashington's Avatar
 
Join Date: Aug 2008
Location: Kenmore, WA
Posts: 1,088
Trader Rating: 2 (100%+)
Default Engine break-in, figure 8's or large circle

I have been breaking my engines doing the figure 8. I am thinking about doing a large circle or oval so it will be one continuous throttle input without going into neutral like the figure 8 does. My question is would this be a be better? I would think that by doing this it would make engine temps more consistent and it would also be faster to break-in. Would there be any draw back by using this method?
__________________
RCCARS!
omarwashington is offline   Reply With Quote
Old 09-12-2010, 06:28 PM   #2
Tech Elite
 
newuserlosi8t's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2010
Location: sacramento
Posts: 2,051
Trader Rating: 65 (97%+)
Default

i usually go to my local track and throw it on the oval just like the circle other than circle 8 imo
__________________
zo1b team option buggy
mg66 go 2072 a main fuels savox servos
TEAM DRIVER FOR----ANSWERRC-USA--- PREMIEREHOBBIES--answerrcusa.com-http://premierehobbies.com ***Contact me for pricing and information on Argus, Hyperion, Max Amps, Durango and Savox***
newuserlosi8t is offline   Reply With Quote
Old 09-12-2010, 07:02 PM   #3
Tech Elite
 
Join Date: Mar 2009
Posts: 3,657
Trader Rating: 5 (100%+)
Default

get some aluminum tape, wrap the head, heat up the engine, get a good idle while clearing out the fuel. Do this for a tank to seat the brearings. Fill it back up, heat it up and lean the low end until it takes off without hesitation, drive it!!!! Dont blip to much or go all out, but vary the throttle speed and don't be afraid to drive it. do this for about 3 to 5 minutes at a time, bring it in and let it cool down. There is no set fuel consumption for it to break in so don't worry about getting "a gallon" or even a half a gallon through it.

Once the bottom end is just about right start working on the top. If it starts to stutter or race a high idle, simply close the idle gap. When you start working on the top lean just a little at the time but always keep it a bit on the rich side but not to much. I suggest reading the plug (make sure the engine head is clean!!) Make sure they are slightly wet. as the engine runs in more it will at some point go richer on you, that is when you have to get it close to a race tune. Once that happens and you lean it out, it will drop it's sac in no time!!

it's very easy. basically keep it hot and run it. make sure it is making good smoke. But for the love of god do not keep it blubbery rich. Dont be afraid to get temps well into the 200's

to get full performance it is going to take alot of fuel, the better part of a gallon. But you can still run it at the settings i mentioned and somewhere between half and a whole gallon it will be ripping.
__________________
"You are not understanding the fundamental principles of my fragmented personality"

Mugen
dreaux is offline   Reply With Quote
Old 09-12-2010, 07:44 PM   #4
Tech Fanatic
 
Join Date: Sep 2008
Posts: 864
Trader Rating: 21 (100%+)
Default

Quote:
Originally Posted by omarwashington View Post
I have been breaking my engines doing the figure 8. I am thinking about doing a large circle or oval so it will be one continuous throttle input without going into neutral like the figure 8 does. My question is would this be a be better? I would think that by doing this it would make engine temps more consistent and it would also be faster to break-in. Would there be any draw back by using this method?
During breakin you should alter the rpm thats what figure 8 does, if you can run the car in a circle/oval with high and low rpm's it will have the same effect.
TopGearRC is offline   Reply With Quote
Old 09-12-2010, 07:51 PM   #5
Tech Elite
 
Join Date: Mar 2009
Posts: 3,657
Trader Rating: 5 (100%+)
Default

just drive the car. Short trigger pulls, medium trigger pulls, short high trigger pulls, long smooth pulls etc. Just drive around like you would normally, the only thing different i do is coast in and don't really use the brakes.
__________________
"You are not understanding the fundamental principles of my fragmented personality"

Mugen
dreaux 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 09:52 AM.


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