Delta Whiskey Posted September 16, 2009 Share Posted September 16, 2009 I know I should run a new engine rich for a few tanks, but am I correct in saying running it rich uses fuel more quickly? (I only got just over ten minutes, at no more the half throttle on the first two tanks !) Quote Link to comment Share on other sites More sharing options...
Bruce Richards Posted September 16, 2009 Share Posted September 16, 2009 Yes running rich will use more fuel. As the engine frees up you will be able to lean it out and the fuel consumption will improve. Quote Link to comment Share on other sites More sharing options...
Delta Whiskey Posted September 16, 2009 Author Share Posted September 16, 2009 That's what I thought Bruce, glad to have it confirmed, I,ve never had a brand new engine before!Edited By Delta Whiskey on 16/09/2009 21:03:43 Quote Link to comment Share on other sites More sharing options...
Steve Hargreaves - Moderator Posted September 18, 2009 Share Posted September 18, 2009 Which engine is it DW? If its an ABC motor running it too rich can actually damage the engine as the piston/liner fit doesn't expand to the correct tolerance if the motor runs too cool...... Reading the instructions is usually the best option..... Quote Link to comment Share on other sites More sharing options...
Delta Whiskey Posted September 18, 2009 Author Share Posted September 18, 2009 Yep thanks Steve, I did that just that I wanted to confirm the extra fuel usuage! It's an 50 hyper heli engine. I run two tanks as 3 turns open on the needle valvue as stated in the mnaul, and will turn it in 3 clicks per every half a tank now up to 5 or 6 tanks for a gentle run in. Then hopefully down to 1.5 - 2 for full on flying. Quote Link to comment Share on other sites More sharing options...
Former Member Posted September 18, 2009 Share Posted September 18, 2009 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Myron Beaumont Posted September 18, 2009 Share Posted September 18, 2009 Eric I feel obliged to disagree with you on a few points although I do know where you're coming from' The whole point of "running-in" (as we used to HAVE to do due to the way tolerances could not be produced as really required in a running scenario) ie -imperfect shaping of a hot cylinder wall whilst cold on a grinding M/c' was to remove bumps on the two contacting surfaces so as to make them mate up at running/constant fairly high temperature .( Argueably maybe about a 200 to 400 degrees C environment in that cylinder ? With the slightly tapered bore (CNC) no- ring case -the idea is to get to max temp as quickly as possible to basically finish off what a machine can never do to such small tolerances (distortion due to uneven cooling all round the barrel etc.) -run for a short period before distress is obvious -Let it cool and repeat You only ever need one molecule thickness of oil anytime for lubrication .OK you might need an excess of oil available to so-called fill in the gaps or bumps of man machining at a non molecular level .BUT let's get rid of the imperfections as quickly as possible without producing TOO much heat Hence the short burst approach (polishing in laymans language) By the way I have re-honed /de- glazed many a bore with nothing more than wet & dry at a 45 degree angle before re-running in Quote Link to comment Share on other sites More sharing options...
BB Posted September 18, 2009 Share Posted September 18, 2009 Os .46 Ax - run in as per Manufacture guidlines. 6 Tanks 10% static. Running a turn and a half anti. Gradually closed to 3/4 turn from closed. In the air ran a 12 x6 prop for next 6 flights (tanks). Changed to an 11.6 prop and screwed in carb to within 1/2 turn. Starts first time, runs cool. Will take a 10 x 6, but isn't necessary on a Wot T. Don't really know what running in achieves except, 'bedding in'. BB Quote Link to comment Share on other sites More sharing options...
Delta Whiskey Posted September 21, 2009 Author Share Posted September 21, 2009 Thanks All, done 5 tanks now, and am down to 2 turns out, and will move to 1,5 over the next few, and keep an eye out for the engine temp ! At the mo, I can keep my finger on the back plate for well over 12 secs after the 11 or 12 minutes gentle flying, I heard for the OS 50 Hyper heli flying it should be near right, if you can keep your finger on for about 5 sec or so? Quote Link to comment Share on other sites More sharing options...
ken anderson. Posted September 21, 2009 Share Posted September 21, 2009 hard lines delta-sounds like your engine is done for-put it in a box send it to me asap.........i'll pay for the postage ect.....'s.. ken anderson..... Quote Link to comment Share on other sites More sharing options...
Delta Whiskey Posted September 21, 2009 Author Share Posted September 21, 2009 Yeah right Ken! Quote Link to comment Share on other sites More sharing options...
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