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-   -   -20c (-4f) revo breakin? (http://www.rcuniverse.com/forum/traxxas-monster-truck-forum-251/6729964-20c-4f-revo-breakin.html)

mustang-04 12-08-2007 11:43 AM

-20c (-4f) revo breakin?
 
hey all.. just picked up a revo 3.3 and am pretty excited about getting this thing running.


problem is its pretty darn cold outside, and im wondering if its a good or bad idea to try and breakin my new toy with it being sooo cold out?


alberta winters, ya.. theyre cold!!!





cheers

leroycool1 12-08-2007 12:19 PM

RE: -20c (-4f) revo breakin?
 
i have never run that cold yet :)

with the wind it is -35 right now :)

mustang-04 12-08-2007 01:35 PM

RE: -20c (-4f) revo breakin?
 
ah yes.. im wondering if maybe now ill be sitting here looking at it for the next 5 months before i can drive it lol!



says in the manual the how tos for a cold brekin, but... i dont have a temp gun and i really dont want to chance not breaking this in properly unless someone with some knowledge can give me a tip or 2!!!

experimental_pilot 12-08-2007 04:03 PM

RE: -20c (-4f) revo breakin?
 
You can break it in, in the cold.
The problem is, you may need a new Piston and Sleeve for the summer.
http://www3.towerhobbies.com/cgi-bin...&I=LXMHT6&P=ML

In this cold, it may not get hot enough and will not expand as much as it will in the summer.
Then when the summer comes around, the engine expands further and you have less compression. As if the engine is worn.

You have a long winter, you can drive it and enjoy it, then replace the P/S for the summer.
Then you can have a winter and summer, piston and sleeve sets.

Wrap the head in tin foil. That will help it retain heat better. Enjoy!

revo3.3traxxas 12-08-2007 04:09 PM

RE: -20c (-4f) revo breakin?
 
Wrap the head in tin-foil as experimental pilot said and, also you should get a temp gun in just keep it around breakin temps and you should be alright :)

fox23 12-08-2007 04:12 PM

RE: -20c (-4f) revo breakin?
 
its supposed to be nice this week, like -2c on tueday.

Thunderbird93 12-08-2007 05:25 PM

RE: -20c (-4f) revo breakin?
 
If that 3.3 is anything like the 2.5 to get started in the cold, for the very first start I would start it in the warmth of the house. We had so much trouble getting 3 S-maxx to start for the first time in cold weather. I think it was in the 30s when we did ours 2 yrs ago. Good luck.

experimental_pilot 12-08-2007 05:35 PM

RE: -20c (-4f) revo breakin?
 
Yea, you will definitely need to warm it with a hair dryer or heat gun for 3-5 minutes beforehand.

stadium truck freak 12-08-2007 05:53 PM

RE: -20c (-4f) revo breakin?
 
if you dont have any foil/tape put a sock over the cooling head

ttoks 12-08-2007 05:54 PM

RE: -20c (-4f) revo breakin?
 
also, use a hot, or very got glow plug, you will without a doubt need it in that temperature.

snoking16 12-08-2007 06:01 PM

RE: -20c (-4f) revo breakin?
 
-4F??? i wouldnt even chance that...i doubt its going to get warm enough...it needs to be in the 220 range for it to be broken in and since traxxas is a 6 tank break in proccess it would probably not even get warm enough in the first couple tanks....im sorry to say but i would wait. thats what im doing with my new RB 523. i bought a Losi Micro DT to run inside so i dont get too bored. at temps that cold it changes the fuel. it gets thicker and harder to run through the needles.

experimental_pilot 12-08-2007 06:11 PM

RE: -20c (-4f) revo breakin?
 
There was someone on here that tested nitro fuels in a professional manner and concluded that it doesn't begin to gel until about -60°C(?).

The worst thing that can happen is you could need a new Piston and Sleeve for $66.
In the mean time you can have a lot of fun, or not....

mustang-04 12-08-2007 06:33 PM

RE: -20c (-4f) revo breakin?
 

Quote:


The worst thing that can happen is you could need a new Piston and Sleeve for $66.
In the mean time you can have a lot of fun, or not....
having fun sounds alot better lol. ill start it up tommorow and post my thoughts :D

ttoks 12-08-2007 07:13 PM

RE: -20c (-4f) revo breakin?
 
start the car inside. before taking it outside cover it in foil, and even a sock to keep it warm, the engine will be fine, the plastics will be very brittle though so don't crash lol.

sunco1 12-08-2007 08:02 PM

RE: -20c (-4f) revo breakin?
 

Quote:

ORIGINAL: experimental_pilot

You can break it in, in the cold.
The problem is, you may need a new Piston and Sleeve for the summer.
http://www3.towerhobbies.com/cgi-bin...&I=LXMHT6&P=ML

In this cold, it may not get hot enough and will not expand as much as it will in the summer.
Then when the summer comes around, the engine expands further and you have less compression. As if the engine is worn.

You have a long winter, you can drive it and enjoy it, then replace the P/S for the summer.
Then you can have a winter and summer, piston and sleeve sets.

Wrap the head in tin foil. That will help it retain heat better. Enjoy!

yup i had that problem. i broke it in in like 10 degree weather and it lasted about 2 gallons for the rest of winter. and i couldnt drive at at during the summer because my engine was crap. and it crapped out when the weather was warm

773W 12-08-2007 10:22 PM

RE: -20c (-4f) revo breakin?
 
-20C....Well dont forget to keep that triger finger moving......I nearly turned mine to ice the other day in these temps. I later thought of using a large wool hat to keep my hands in while the antena poked through........Will try next time.

jp173363 12-09-2007 12:08 AM

RE: -20c (-4f) revo breakin?
 
If you going to risk it, go get a temp gun, and a beer koozie. Crank it up with the koozie over the head, this will help it to warm up and retain some heat inside the coozie.

HighClassBasher 12-09-2007 01:51 AM

RE: -20c (-4f) revo breakin?
 
A beer koozie huh??? You must either drink small beers or have a BIG engine:D.... i would think a koozie would be way too big,, how could you even fit the body on...

Thunderbird93 12-09-2007 02:16 AM

RE: -20c (-4f) revo breakin?
 
If it gets hard to steer you'll have to loosen up the balls at the end of the arms some. I had problems with mine when I had mine out in the snow.

89ram 12-09-2007 09:41 PM

RE: -20c (-4f) revo breakin?
 
i put a cup of nitro in the deepfreezer for 2 days. it was no thicker than the fuel in the jug at room temperature. "myth busted!"

Hairballusmaximus 12-10-2007 05:01 AM

RE: -20c (-4f) revo breakin?
 
I think if youget a temp gun so youcan be sure you are keeping it up to temp you should be ok if you can retain enough heat. The aluminm foil will probably work as would the sock, or try a paper towel or tp paper roll( the card board tube, I know you are not three years old but I told some else to try it and they whined that they could not fit a whole roll in there, go figure) Just a though, Kinda spendy but maybe a winter engine and a summer engine? Just a thought.

mustang-04 12-10-2007 11:16 AM

RE: -20c (-4f) revo breakin?
 
thanks for the replies :D

i run the 1st tank yesturday (-5c) and she started up in 2-3 seconds. did the 1st tank breakin routine and man oh man, i can feel the power of this just waiting to be released.



i suppose ill just finish off the rest of the break in and drive the snot out of it for the time being and see what happenes come summer. if nothing else ill just upgrade the entire motor :D






wheres everyone finding thier blue suspension arms and why do alot of people have thier reverse servo taken out?

supertib 12-10-2007 12:04 PM

RE: -20c (-4f) revo breakin?
 
its only a 3.3 motor....so who cares...just run it anyways...if it fails buy another, they are dirt cheap

black mamba 12-10-2007 12:12 PM

RE: -20c (-4f) revo breakin?
 
I wouldn't break it in with air temps that cold. It's hard enough to operate a nitro engine in cold temps, let alone break one in. Wait until spring.[8D]

Thunderbird93 12-10-2007 12:23 PM

RE: -20c (-4f) revo breakin?
 
I was thinking the same thing as Supertib.


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