Tips on New motor brake in?

[4u2nv]

Anyone have tips on the proper way to brake in a Wasp. 18?? This will be my 1st motor swap on a R/c, I've done them on airplane motors but I'm sure its quite different. ANy pointers woul be appriciated. Thanks guys!

 

[olds97_lss]

I just put one in my hybrid sport maxx. It's only hybrid because I h'billied it to death.

I ran 1 tank through at high idle and the temps got up to 210. Put the piston at BDC, let it cool. 2nd tank, drove it around slowly, shut it off half way through and let it cool at BDC. Did the 2nd half the same as the first half.

3rd tank, started to lean it out a bit so I could pick up some rpm's while still keeping the temp below 240 and above 210. 4-10, same. In between each tank, put the piston at BDC until it cooled.

I'm now on about tank 20 and I didn't really notice much power until about tank 12-15. At tank 16, I changed to an OS 8 plug and it runs much smoother and produces better power now. I'll probably run the bjeabus out of it tomorrow.

I was/am currently using Trinity MHP 20%. I started with an OS A3, but it ran pretty crappy. I'd suggest using the 8.

 

[iflybyu]

The first procedure is called "heat cycling", this is the most important part of break-in and almost no one does it. Start the engine and let it idle, after 1-2 minutes feel the cylinder head, you want it to be hot enough so you can't grab on to it for more than 10 seconds at the base of the head. Stop the engine, make sure the piston is at the bottom of the stroke, let it completely cool down, back to stone cold. Repeat this process at least 10 times !!! I usually dedicate the first tank of fuel to this process. It's going to take some time to do this so be patient.

Now you can take it out and run it. Open the main needle one full turn. The next 4 tanks, run at no more than 1/2 throttle and vary the speed up and down. Let it completely cool down between runs and always make sure the piston is at the bottom of the stroke while it is cooling. Try to run the engine in the 200 degree range during this period.

Now 4 more tanks running up to 3/4 throttle, run it in the same manner as before.

Now you can go wide open, make sure to run it on the rich side for another 6 tanks. Don't try to grab a lot of ponies yet. ( this is easier said than done !!)

Now you can let it rip. These engines run best at temps 220 to 240 degrees. There should always be a VISABLE line of smoke coming from the exhaust stinger.

Good luck with your break-in. Take your time and do it right and you will be rewarded with an engine that runs stronger and lasts longer than you have ever seen.

 

[scottm]

Get a temperature gauge first, then do the heat cycle method:

https://www.rcnitrotalk.com/forum/showthread.php?s=&threadid=14996&highlight=proper

 

[El Pirata]

Originally posted by 4u2nv
Anyone have tips on the proper way to brake in a Wasp. 18?? This will be my 1st motor swap on a R/c, I've done them on airplane motors but I'm sure its quite different. ANy pointers woul be appriciated. Thanks guys!

For starters call it an engine not a motor.

I generally run 3 - 5 tanks for fuel at idle against a fixed structure in my rc's before I take them on the road. After the idle tanks I will run another 4 tanks at slower rpm's.

The first run tank I will set my trim on my radio so the rc is going just slightly faster than needed to keep the clutch engaged. The second run tank I will generally run an oval increasing to 1/2 - 3/4 throttle then slowly turning around and doing the same thing again. On the third run tank I will increase the throttle slowly between 3/4 to WOT doing a similar oval to tank number 2. The last tank I will now start increasing the speed at which I do throttle changes and stay closer to WOT as much as the space allows.

After each tank during the break in process I will let the engine cool to room temp before running the next tank. Also after each idle tank I will lean the HSN out by 1/8th of a turn. On the run tanks I will lean out 1/16th of a turn each tank. After I have the 4th run tank through my rc's I will start tuning to the desired temp range I want.

This does not always hold true with all engines. Some engines will not wake up until they have more fuel through them. I remember my Hyper 21 had almost a gallon through it before it woke up and when it did, ay carumba! Just my

 

[4u2nv]

And the differance betweem a Motor and a engine is......???? Just razzin ya, Thanks for the pointers. Ill keep ya guys posted. It whould be here mid week this coming week from Tower. Thanks!!

 

[olds97_lss]

Motor is electric... engine is not

(I like the smiley that eats the face!)

 

[El Pirata]

Originally posted by olds97_lss
Motor is electric... engine is not

(I like the smiley that eats the face!)

That's dead on like your dead horse.

 

[olds97_lss]

My horse isn't dead, just bruised and bent!

 

[Maxx Trooper]

Didnt read everyones post but after each tank, make sure the piston is at the bottom of the sleeve. u can easily do this by marking the flywheel with a marker or an exact cut.

later

 

[cbreaker]

If an electric motor is not an engine, and a nitro engine is not a motor, then what is google?

Personally, I think an internal combustion engine can be called a motor or engine interchangably. Motor is used in lots of stuff denoting internal combustion engines. "Motor Sports" comes to mind.. and I don't think they're running electrics in those dirt bikes.

But.. I digress..

 

[4u2nv]

Like when it comes to cars its called a motor/engine and means the same. But R/cin seems to have its own lingo and I'm fairly new still so.. Thanks for the tips.

 

[olds97_lss]

Originally posted by cbreaker
If an electric motor is not an engine, and a nitro engine is not a motor, then what is google?

Personally, I think an internal combustion engine can be called a motor or engine interchangably. Motor is used in lots of stuff denoting internal combustion engines. "Motor Sports" comes to mind.. and I don't think they're running electrics in those dirt bikes.

But.. I digress..

Good point, hadn't really thought of that. But as in anything, people will call what they want... umm... what they want!

In my world, motor=electric and engine=not electric.

Engine isn't very interchangable, but I guess motor is. I've never heard anyone reference an electric motor to be an electric engine.

 

[cbreaker]

I've never heard anyone reference an electric motor to be an electric engine.

Me neither, but ya could!

From dictionary.com:

mo·tor    ( P )  Pronunciation Key  (mtr)
n.
   1. Something, such as a machine or an engine, that produces or imparts motion.
   2. A device that converts any form of energy into mechanical energy, especially an internal-combustion
      engine or an arrangement of coils and magnets that converts electric current into mechanical power.

en·gine    ( P )  Pronunciation Key  (njn)
n.
   1.
      1. A machine that converts energy into mechanical force or motion.
      2. Such a machine distinguished from an electric, spring-driven, 
         or hydraulic motor by its use of a fuel.
   2.
      1. A mechanical appliance, instrument, or tool: engines of war.
      2. An agent, instrument, or means of accomplishment.
   3. A locomotive.
   4. A fire engine.
   5. Computer Science. A search engine.

As you can see, I'm anal about not being anal about when to use the word motor or engine =)

 

[olds97_lss]

Smart azzz! :jester:

 

[4u2nv]

""As you can see, I'm anal about not being anal about when to use the word motor or engine =)"""

And have alot of free time..

 

[lykan]

Not very often have I heard a 1/1 motor mount called and engine mount.. If i went to the auto parts store and asked for an engine mount for a chevy 350 they would look at me funny..

 

[4u2nv]

Yeah true. I think it has alot more to do with where you are also. In Mn it gets called a Engine more than a motor, and when it is called a motor its more of the ricers and engines is more the rodders/normal people. But also look at a can of "Engine degresser(Sp?). Not Motor Degreser (Sp?)
But also Mn calls(what you call) Soda (we call) Pop. Also I heard in like Tx and Cali they just call everything Coke.

 

[olds97_lss]

Didn't this start out as a "how to break in a 18" thread???

 

[4u2nv]

yeah... Any more tips would be greatly appriciated. I want to get the best performance out of this ENGINE