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| Gas Engines and Power Discuss all aspects of giant scale power systems |
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02-06-2006, 10:13 AM
| #13 (permalink) |
| The Burgur Lifestyle is kickas  Join Date: Jan 2006
Posts: 474
 |  Re: Real world RPM
DA 50, NX 23X8, Standard stock muffler, APC 3.5'' ULTIMATE spinner. Lawnboy Ashless- 32:1 (break in mix, I think its 32:1) Premium gas (dont know what octane) Only one gallon through it. On the ground I get 6600 I have leaned the high and low around 1/8 to 1/4. |
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02-06-2006, 10:49 AM
| #14 (permalink) |
| Tony Quist  Join Date: Jan 2006 Location: Glendale, AZ Age: 45
Posts: 1,370
| Re: Real world RPM
DA 150 "Sala Series", Airmodels 32-11, KS 1080 pipes, MTW 12" headers, 70 degrees,1100 elevation. 87 octane fuel Aimsoil Saber100-1. The reading was registered after a 15 minute flight, not with a cold engine. 6080rpm 1st reading 6040 second reading. A cold engine can give you a couple of hundred more rpms. |
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02-06-2006, 10:54 AM
| #15 (permalink) |
| Tony Quist Join Date: Jan 2006 Location: Glendale, AZ Age: 45
Posts: 1,370
| Re: Real world RPM
DA 50 XOAR 23-8 prop, KS 1060 pipe on a full length header. Same fuel and conditions as my 150 above. 7100 rpms. My buddy Dan is getting 7200 rpms with the only change from mine is muffler. He has a new pipe from Mark Doan. This pipe produces a ton a power. |
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02-07-2006, 03:27 PM
| #16 (permalink) |
| Bad-ass Super Contributer!  Join Date: Jan 2006 Location: Charlotte, NC Age: 29
Posts: 531
| Re: Real world RPM
DA50-R (newest version) Slimline wraparound Pitts NX 22x8 89 octane Amsoil 100:1 mixed at 80:1 7200RPM (7260 peak!) Sea-level (FL) temp mid 60's with moderate humidity I've got about 7-8 gallons through it.  |
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02-10-2006, 09:01 AM
| #18 (permalink) |
| Keeping it Real  Join Date: Jan 2006 Location: Enid, OK
Posts: 1,765
| Re: Real world RPM
3w 106 with KS 1060s (brand new on lawnboy 40:1) Mejzlik 28x10 7300 rpms Mejzlik 29x10 6600 3w 150 with KS 1090s 3w 3d Prop 6250 Fuchs freestyle 32x10 6400 mejzlik 32x10 6700 Last edited by Flyinrazrback; 02-20-2006 at 05:58 PM. |
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02-19-2006, 07:10 PM
| #20 (permalink) |
| Eccentricus Magnus  Join Date: Jan 2006 Location: Charlotte, North Carolina Age: 51
Posts: 3,568
| Re: Real world RPM
BME110 w/Pefa LL canisters: First tests, 2 years ago: Mejzlik 28-10 @ 7050-7100 Menz 28-10 @ 6500 Mejzlik 29-10 @ 6500 Menz 27-10 @ 7100 Mejzlik 26-10 @ 8100 never tried an actual "Tuned Pipe" Currently, the same engine, after sitting for 9 months and about 250 hard flights on the engine: Mejzlik 28-10 @ 6650 HOT I think my baby needs to be cleaned up, decarbonized, and have a new set of rings. She's showing my neglect and her age.
__________________ 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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02-19-2006, 07:57 PM
| #21 (permalink) |
| Bad-ass Super Contributer!  Join Date: Jan 2006 Location: Williams, Az USA
Posts: 1,607
| Re: Real world RPM
BME 110, test by Keith with my 19-18 carbon GT80 race prop, 10,000 rpm on the ground.. GT80s on glow fuel turn this prop at 9000 on the ground, 11,500 in the air at 188 mph.....  Herbrandson 289, 21-27 carbon race prop, 9400 rpm in the air, 234 mph.... DA 150s turn around 10,000 rpm with race props, don't know what size All with open exhaust, no pipes or cans, we LIKE noise  |
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02-20-2006, 04:46 PM
| #23 (permalink) |
| Bad-ass Super Contributer! Join Date: Jan 2006 Location: Williams, Az USA
Posts: 1,607
| Re: Real world RPM
Drill out the fuel passages to allow 2X the flow and screw in a glow plug...Mix methanol with the same oil ratio that works for you with gas...We like to use about 6% oil and whatever nitro works well for racing, about 25%.... Or use the stock ignition, it works well with glow fuel.. |
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