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| Gas Engines and Power Discuss all aspects of giant scale power systems |
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05-08-2007, 02:14 PM
| #86 (permalink) |
| Bad-ass Super Contributer!   Join Date: Apr 2006 Location: Kalgoorlie Australia Age: 41
Posts: 644
 |  Re: Real world RPM
3W 106cs red head mezjlik 28x10 6400 on ground 7385 in air 3w oil 50-1 98oct BP ultimate fuel. New rings still running in very rich. Any one with real time data. I'm using an eagletree data logger for in flight readings. Surprised at what the prop is unloading at in level flight. This data was recorded flying the IMAC Basic schedule the highest RPM was a level flyby before landing. 1500 050507sl.jpg
__________________ IMAC Out East sponsors http://discounthobbies.com.au/, http://acercmodels.com/ http://takeoffandland.com.au/, http://dlenginesaustralia.com/ http://www.dolphinco.com.au/, http://www.ydmodels.com.au/ http://www.corpairexpress.com/,http://stores.homestead.com/fancyfoam/StoreFront.bok http://www.modeldesign.com.au , http://precisionaerobatics.com.au/ http://desertaircraft.com.au/, http://www.perthrc.com.au/ |
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05-08-2007, 09:55 PM
| #87 (permalink) |
| Keeping them flying!!  Join Date: Jan 2006 Location: StoneyCreek, Ontario ,Canada
Posts: 541
| Re: Real world RPM
Evo 80TT- pennzoil aircooled 40 to 1-not broken in yet. 3 blade mezlik 24 X 10 JTEC pitts muffler 6500rpm
__________________ _________________________ _____________  THAT'S A SPICEY MEETABALL!! |
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05-28-2007, 06:34 AM
| #90 (permalink) |
| Must practice unknowns  Join Date: Jan 2006 Location: Maitland Age: 36
Posts: 876
| Re: Real world RPM
ZDZ60RV 30-1 Caltex semi synthetic for running in Mejlik 23 x 8 PA wraparound pitts 6750rpm Sea level Now on Belray MC1 @ 40:1 6850rpm 23 x 8 Mej Last edited by Jamieman; 08-22-2007 at 06:41 AM. Reason: Off run in oil |
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05-28-2007, 12:50 PM
| #91 (permalink) | ||||||||||||||||||
| Bad-ass Super Contributer! Join Date: Nov 2006 Location: Vicksburg, MS Age: 62
Posts: 825
| Re: Real world RPM
Amsoil @ 100:1 Regular Unleaded Gas MTW 75K canister Biela 3-blade 26 x 10 Ambient Temp = 88 F Relative humidity ~ 60% Altitude ~ 300 ft Adjusting throttle curve so was warm/hot when RPM measured Max RPM = 5890 Idle RPM = 1400 Bobby | ||||||||||||||||||
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06-04-2007, 07:07 AM
| #92 (permalink) |
| MMMMMore Cubes , 210cc  Join Date: Jan 2006 Location: Melbourne , Australia
Posts: 1,224
| Re: Real world RPM
More updates on my DA 100 DA 100 , K&S 1060 , Mej 28 x 10 Motul 800 @ 50:1 At Sea level 6660 RPM This engine has been in solid use for 14 months doing IMAC and has burnt lots of fuel , 200 + flights Stu |
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06-13-2007, 09:14 PM
| #95 (permalink) |
| Bad-ass Super Contributer!  Join Date: Mar 2007 Location: Kannapolis, North Carolina
Posts: 1,819
| Re: Real world RPM
i would stay a 24 x 12 x 3 or a 25 x 12 x 3 depending on power, weight of the plane and were u r located if on can or pipe i would look at the 25 or 26" only
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07-04-2007, 10:26 AM
| #96 (permalink) |
| Bad-ass Super Contributer! Join Date: Jan 2006 Location: No Matter
Posts: 412
| Re: Real world RPM
Allison T56-A-15 13.5 foot Variable Pitch Hamilton Standard Prop Sea Level 15C 1,021 RPM at Prop (engine turning at 13,820 RPM) 4591 SHP 4 of them.
__________________ Sicko |
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