Engine Break in [Archive]

Bignose13

06-20-2007, 09:58 AM

Hi
What is the best way to break a OS 50 Hyper in, tried looking on the site but cant see anything.
I know there will be many different ways so just a guide really.
Selling my Raptor 30 (not enough power)for a 600n so will have her pretty soon
Thanks

BarracudaHockey

06-20-2007, 10:46 AM

Run it a bit rich for a tank or so, not 4 stroking but well rich, 2 to 2 1/4 turns is probably sufficent, maybe 2.5 if you're running 30 percent. Hover for a minute or two, high idle for a minute or two.

Lean 3 or 4 clicks and do it again hover for a bit, land and idle only this flight start checking the backplate temp it should be warm, lean till it gets warm on the hover portion. You can start flying around but dont beat on it. Keep an eye on the backplate, as the ring seats it will get cooler for the same needle setting, keep leaning to keep it warm. At some point it will level out, thats when its fully broken in.

After 3 tanks or so you can start beating on it.

Running blubbering rich does nothing to break in an engine as they need to heat up to break in so dont waste the fuel flying with raw fuel pouring out the exhaust.

benzmaster

06-20-2007, 02:34 PM

http://fr.youtube.com/watch?v=5sN5rOEj1a4 :lol:

what is "backplate" ? the bottom of the motor ? should I touch under ? or is it the blue thing on front ? (sorry i'm french)

creightoncarr

06-20-2007, 03:14 PM

The backplate is the plate on the back of the motor. When the motor is mounted in your helicopter the backplate will be on the bottom. The "blue thing" on the front of the engine is the head. The head will generally be much hotter than the backplate during operation.

benzmaster

06-20-2007, 03:15 PM

okay, this is the stuff with 4 screws ?

ckoelliker

06-20-2007, 04:02 PM

Yes it has the four screws. Generally there is the three to five second rule. Put your finger on the back plate right after you have landed. If you can keep it on there for 3-5 seconds you should be all right. Three would be on the lean side and five should give you better bearing life. This is of course not as accurate as a temperature gage, but it seems to work.