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| Gas Engines and Power Discuss all aspects of giant scale power systems |
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04-09-2006, 05:52 PM
| #28 (permalink) |
| Bad-ass Super Contributer!   Join Date: Jan 2006 Location: Central, Ca Age: 47
Posts: 1,939
 |  Re: Real world RPM BME110-new(a couple gallons thru)-stock mufflers Mezj 28x10-6500 3W 27x10-6100 Beila 28x10-5900 number with engine hot, 100 ft ASL, 75-80 deg. Last edited by RTK; 04-09-2006 at 05:59 PM. |
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04-20-2006, 03:52 PM
| #29 (permalink) |
| It will fly!!!    | Re: Real world RPM
DA 50 Slimline Pitts mufler menz 22 X 8 Cheap gas lawnboy 32:1 ashless 1/2 gal thru Indiana 40% humidity 70 deg. 7100 Idle about 900 Question what should the idle be?
__________________ Prevent Darwinism become a paramedic!!! Never try to teach a pig to sing! It wastes your time and it annoys the pig!!! Powered by Jim Beam  |
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04-20-2006, 04:46 PM
| #31 (permalink) |
| It will fly!!! | Re: Real world RPM
Biff, you are a sick man. Trying to get that sound, but still breaking in. Just was wondering about numbers.
__________________ Prevent Darwinism become a paramedic!!! Never try to teach a pig to sing! It wastes your time and it annoys the pig!!! Powered by Jim Beam |
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04-20-2006, 05:26 PM
| #32 (permalink) |
| Eccentricus Magnus  Join Date: Jan 2006 Location: Charlotte, North Carolina Age: 51
Posts: 3,568
| Re: Real world RPM
900 sounds a bit slow. . better turn it up to about 1250 or so. . . . Better yet, reset the tach to TWO blade instead of 3-blade. . might give you a more accurate reading at idle. . . . .
__________________ KrisW "Mediocrity is doing it THEIR way" It's 20% Plane, 5% Engine, and 75% Practice, practice, Practice . . .Excuse me, I'm off to the field. http://www.modelaircraftengineering.com BME Repair and Modifications Guru |
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05-09-2006, 07:50 AM
| #33 (permalink) |
| Bad-ass Super Contributer!  Join Date: Feb 2006 Location: Miramar, FL
Posts: 1,043
| Re: Real world RPM
Hi Guys, 3W 150 TOC, engine has 40 flights on it, HP2 Syn 50/1, 93 Octane, Mezjlick 28.5x12 3 blade, 5340 rpms, standard mufflers. This is a new engine converted to the 3W 6.0V ignition by A.I., as noted in other posts with the single-cylinder running problems. First flilght of the day was 5200 with obvious richness in flight. I leaned slightly for the next flight which produced the 5340 reading. I leaned again after that flight but did not tach, in flight power was improved though. I loved the way the 3B flew and is my new prop of choice. Still has plenty of horizontal speed, awesome vertical still achieved, but the throttle control and breaking allows for either both "constant-speed" type of flying or fast for wind. Loved it! Installed on my Dalton Aviation 42% 260. (engine was broken in with 6 gallons of Lawn-boy at 50/1, however, I was thinkng to run another 3 gallons of Lawn-boy through it on the advice of A.I., which would equate to more than 8 hrs of run time on the L.B.). UPDATE: Same setup 10/15/06 turned 5600 rpms on the 28.5x12 3 blade. Thanks, Jim W. Last edited by Jim Woodward; 10-16-2006 at 10:27 PM. |
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05-17-2006, 02:58 PM
| #34 (permalink) |
| Circle flyin', NOT!   Join Date: Mar 2006 Location: Anderson, Mo
Posts: 89
| Re: Real world RPM
BME 50, fired up for the first time today, still trying to get it tuned (soon as my tx recharges). 22x8 3W/ Menz prop= 6480 with factory settings leaned 3/8 turn= 7100 87 octane/ Stihl oil 50:1 still need to tweak the low end |
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05-23-2006, 10:12 PM
| #36 (permalink) |
| Keeping it Real  Join Date: Jan 2006 Location: Enid, OK
Posts: 1,765
| Re: Real world RPM
3w 80cs with 3w can, 7th flight, mejzlik 26x10, 6540 (95 degrees, 40:1 pennzoil) Edit: Now 2 gallons through motor, PT Models 26x10 6780. Awesome Prop. 2.5 gallons (last tank of break in fuel) Vess 27A 6220 on the ground, and 6680 in the air, great prop! Last edited by Flyinrazrback; 05-28-2006 at 12:39 AM. |
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