proper break in steps for a .47 engine - RCCanada - Canada Radio Controlled Hobby Forum
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Old 05-29-2004, 11:48 PM   #1
Chris Cann
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proper break in steps for a .47 engine

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Can anyone give me proper break in steps for my .47 gms there were no instructins on break in on the box and I have never done it b4! I plan on using a 10 oz tank.
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Old 05-30-2004, 09:02 AM   #2
Gary Maker
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Breakin for this engine is pretty much the same as for any engine. Find the proper setting for the high end needle by setting it at about 3 full turns out to start with, start the engine and bring it to full throttle. Slowly turn in the needle until you hear the engine peak and then back it off about a 1/4 turn to keep it nice and rich for the first few flights. You shouldn't have to touch the low end needle or air screw until after you've run it a few times and the engine getting broken in and then only slight adjustment should be needed to reach the peak idle speed.

Running an engine at too lean a setting during the breakin period can cause serious damage to the engine especially the piston and sleve! Take your time setting it up to make sure your running nice and rich for at least the first 4 or 5 flights.

If this is the engine your using in the 60 size trainer as mentioned in a previous post, I would only use an 8 oz or even a 6 oz tank to help keep the weight down. I run my Thunder Tiger 46 Pro engine on a 6 oz tank and surprisingly I get a good 12 minutes of flying time with it. It will use a bit more fuel for the first few flights because of running it rich so expect to only get about 8 or 9 minutes on a 6 oz. but once broken in it will give you good flying time with the 6 oz tank!
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