Real world RPM - Page 22

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Al Lewis · 10-21-2009, 10:57 PM

Yeah, that's a cool unit. Ron Nesler at www.southeastrcengines.com sent me one last week to try out. Great tool for testing.

http://www.southeastrcengines.com/see_020.htm

jamestexas244 · 10-22-2009, 02:39 AM

DA-100 40 to 1 Bellray HR1. 7100rpm static turning Meljick 28 by 10 going to 3 blade Xoar PJI 26 by 10 to reduce engine rpm. P.S. never drilled a three blade the little pins in the woud is that were i drill?

WrongWayRC · 10-22-2009, 05:54 AM

The wood dowels in the prop are to hold it in place while the epoxy sets during the manufacturing. Drill where your prop sets up best for engine start and don't worry about the dowels.

Hey Al, I have left the engine tach in and been flying with it. No problems to date. I just made sure I secured all connections in the Y harness.

Here is another rpm reading with the inline tach.

Torch 90 on AMT pipe. Royal purple at 85-1 regular gas. Sea level (+10 ft) 75 degrees F.

JC Super Prop 24x10x3 Narrow

6520 rpm.

PS Anybody going to Atlanta Huckfest want to see the new tach I have it installed in two planes and will have a box full to sell at show price...

WrongWayRC · 10-22-2009, 05:56 AM

By the way, I had to optimize the high end needle nearly a half turn to get these readings. Previously using JC Super Prop 27x8 two blade at 7100 rpm.

Super08 · 10-22-2009, 08:47 AM

DLE55 fresh out of the box. On it's first tank of fuel with a quick tune.
Xoar laminated 22x8
7110rpm
engine temp 242F at rear of head
altitude about 1500'
stock exhaust

pe reivers · 10-23-2009, 03:57 PM

	Quote: Originally Posted by WrongWayRC
	Which ones?

The 23A at 7800 especially. Rpm sound a lot lower to me.
The 22A at 8400 in the dive yes, but static will probably be a tad less.

rcign · 10-26-2009, 02:41 PM

DLE30cc . Vess 18-8. 8500 rpm.. 87 octane generic gas. Milton Thompson muffler. 32-1 Super Tech oil. RC EXL tach.
This engine was the test for the mod that fixed quitting when tilted problem...Atleast on this one...

jamestexas244 · 10-26-2009, 02:48 PM

DA-100 turning a 28 by 10 mezlick at 7100 rpm. The other day i got my Xoar 3 blade 26 by 10 and flew with it and it only tached out at 5750rpm... Is this good or bad?

WrongWayRC · 10-26-2009, 02:55 PM

	Quote: Originally Posted by pe reivers
	The 23A at 7800 especially. Rpm sound a lot lower to me. The 22A at 8400 in the dive yes, but static will probably be a tad less.

My tests were static. RPM's might be expected to be lower when dragging an airplane straight up-line

Maybe the two different tachs used were defective..... No matter, the plane is gone with the custom header and cf pipe....motor is in garage waiting for a future project.

Flatlandman · 10-26-2009, 03:45 PM

	Quote: Originally Posted by jamestexas244
	DA-100 turning a 28 by 10 mezlick at 7100 rpm. The other day i got my Xoar 3 blade 26 by 10 and flew with it and it only tached out at 5750rpm... Is this good or bad?

That rpm with the mezjlic 28x10 is way higher than others is that with a tuned pipe?

jamesrxx951 · 10-26-2009, 03:57 PM

	Quote: Originally Posted by rcign
	DLE30cc . Vess 18-8. 8500 rpm.. 87 octane generic gas. Milton Thompson muffler. 32-1 Super Tech oil. RC EXL tach. This engine was the test for the mod that fixed quitting when tilted problem...Atleast on this one...

is that a stock motor reading or has it been tweaked alittle? that motor is really spinning with that prop.

rcign · 10-26-2009, 09:52 PM

Box stock, they all run that way....

Albatross · 10-27-2009, 10:21 AM

	Quote: Originally Posted by Flatlandman
	That rpm with the mezjlic 28x10 is way higher than others is that with a tuned pipe?

I agree, tuned pipe is only possible way to get 7100 rpm out of an 100'er engine with that prop.

RTK · 10-27-2009, 01:24 PM

Yep, or a bad tach.

Captinjohn · 11-03-2009, 07:31 PM

Maybe thin air lets em REV higher!

10-21-2009, 10:57 PM	#316
Al Lewis Bad-ass Super Contributer! Join Date: Nov 2007 Location: Port Orchard, WA Age: 61 Posts: 6,864 Awards Showcase Total Awards: 3	Re: Real world RPM Yeah, that's a cool unit. Ron Nesler at www.southeastrcengines.com sent me one last week to try out. Great tool for testing. http://www.southeastrcengines.com/see_020.htm __________________ http://www.southeastrcengines.com http://www.vessaero.com Remember every second of every day there are thousands of men and women giving of their lives to keep you safe. Never forget them for they never forget you!!

10-22-2009, 02:39 AM	#317
jamestexas244 Super Contributer Join Date: Jan 2007 Location: Newport News, Va Age: 25 Posts: 102	Re: Real world RPM DA-100 40 to 1 Bellray HR1. 7100rpm static turning Meljick 28 by 10 going to 3 blade Xoar PJI 26 by 10 to reduce engine rpm. P.S. never drilled a three blade the little pins in the woud is that were i drill?

10-22-2009, 05:54 AM	#318
WrongWayRC Dot Com-ing it... Join Date: Sep 2008 Location: Ormond Beach, FL Age: 54 Posts: 2,335	Re: Real world RPM The wood dowels in the prop are to hold it in place while the epoxy sets during the manufacturing. Drill where your prop sets up best for engine start and don't worry about the dowels. Hey Al, I have left the engine tach in and been flying with it. No problems to date. I just made sure I secured all connections in the Y harness. Here is another rpm reading with the inline tach. Torch 90 on AMT pipe. Royal purple at 85-1 regular gas. Sea level (+10 ft) 75 degrees F. JC Super Prop 24x10x3 Narrow 6520 rpm. PS Anybody going to Atlanta Huckfest want to see the new tach I have it installed in two planes and will have a box full to sell at show price... __________________ A123 Batteries, SWB Manufacturing Smart Fly, FMA Cellpro, Rcexl Sooner or later.....your gonna do it the.. WrongWay

10-22-2009, 05:56 AM	#319
WrongWayRC Dot Com-ing it... Join Date: Sep 2008 Location: Ormond Beach, FL Age: 54 Posts: 2,335	Re: Real world RPM By the way, I had to optimize the high end needle nearly a half turn to get these readings. Previously using JC Super Prop 27x8 two blade at 7100 rpm. __________________ A123 Batteries, SWB Manufacturing Smart Fly, FMA Cellpro, Rcexl Sooner or later.....your gonna do it the.. WrongWay

10-22-2009, 08:47 AM	#320
Super08 Who put that tree there? Join Date: Mar 2008 Location: Fort McMurray AB Age: 51 Posts: 3,854	Re: Real world RPM DLE55 fresh out of the box. On it's first tank of fuel with a quick tune. Xoar laminated 22x8 7110rpm engine temp 242F at rear of head altitude about 1500' stock exhaust

10-26-2009, 02:41 PM	#322
rcign Bad-ass Super Contributer! Join Date: Jan 2006 Location: Williams, Az USA Age: 76 Posts: 2,439	Re: Real world RPM DLE30cc . Vess 18-8. 8500 rpm.. 87 octane generic gas. Milton Thompson muffler. 32-1 Super Tech oil. RC EXL tach. This engine was the test for the mod that fixed quitting when tilted problem...Atleast on this one... __________________ It will either work or it won't

10-26-2009, 02:48 PM	#323
jamestexas244 Super Contributer Join Date: Jan 2007 Location: Newport News, Va Age: 25 Posts: 102	Re: Real world RPM DA-100 turning a 28 by 10 mezlick at 7100 rpm. The other day i got my Xoar 3 blade 26 by 10 and flew with it and it only tached out at 5750rpm... Is this good or bad?

10-26-2009, 09:52 PM	#327
rcign Bad-ass Super Contributer! Join Date: Jan 2006 Location: Williams, Az USA Age: 76 Posts: 2,439	Re: Real world RPM Box stock, they all run that way.... __________________ It will either work or it won't

10-27-2009, 01:24 PM	#329
RTK Bad-ass Super Contributer! Join Date: Jan 2006 Location: Left Coast Age: 50 Posts: 3,720	Re: Real world RPM Yep, or a bad tach.

11-03-2009, 07:31 PM	#330
Captinjohn Bad-ass Super Contributer! Join Date: Feb 2006 Location: Hesperia Michigan USA Posts: 566	Re: Real world RPM Maybe thin air lets em REV higher!

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