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05-09-2009, 07:55 AM
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#256 |
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Sponsor of My Sons
 
Join Date: Aug 2008
Location: Sea Level in the SunShine!
Age: 45
Posts: 1,279
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Re: Real world RPM
DL100
walbro sdc80 mej 28x10 RC excel ign da headers, 1.5 inches shortened on right side mtengine usa 65mmcans royal purple oil 90:1 89 octane gas 6600 rpms not fully tuned out yet idle 1300 |
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05-20-2009, 04:05 PM
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#257 |
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3D flyier
 
Join Date: Nov 2007
Location: Bulgaria, Sofia
Posts: 77
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Re: Real world RPM
Hi!
Today I tested my DL-50 on a 17.4 lbs Yak-54/ Aeroworks. Here is the data: 27 degrees Celsius temperature DL-50 ver.2 Stock muffler low: 1600 high: 7400 prop: Menz 22x8 Less than half a gallon through the engine. What do you think about that?  
__________________
www.virtualpilotbg.com 3D flyer! Only flying gives us the superior power of life! 
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05-21-2009, 08:01 AM
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#258 |
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Flying: Giant Scale 3D
Join Date: Jul 2006
Location: The Netherlands
Age: 28
Posts: 8,416
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Re: Real world RPM
3W157, MTW RE3 tuned pipes, Mejzlik 30x12 2-blade; 6350 rpm
(cold engine)
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05-22-2009, 08:19 AM
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#259 |
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Who put that tree there?
Join Date: Mar 2008
Location: Fort McMurray AB
Age: 51
Posts: 3,854
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Re: Real world RPM
DL100 (bluebox)
Slimline mufflers Xoar 27x10 first tank of fuel Pennzoil 32/1 1700' asl 15C or 60F 6000rpm I will repost when it gets broke in to see the difference in rpm. Update #1 I have a little over 2 gallons through it and it is now taching 6240 rpm. The prop is ripping in the air like crazy. Update #2 Just passed the 4 gallon mark now that I have a wing tube again. The engine is now turning 6420 hot. Last edited by Super08; 06-13-2009 at 11:00 PM. |
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05-26-2009, 10:25 PM
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#260 |
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Flyin' Around
 
Join Date: Dec 2007
Location: Arlington, TX
Posts: 13
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Re: Real world RPM
ZDZ 60RV
BCM Pitts Bollywood 24x8 wood 40:1 synthetic 6510 rpms Last edited by jbatson; 05-26-2009 at 10:33 PM. |
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05-27-2009, 12:23 AM
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#261 |
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Super Contributer
Join Date: Jan 2007
Location: Newport News, Va
Age: 25
Posts: 102
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Re: Real world RPM
DA-100 100 ft above sea level "guess" runing 32 to 1 lawn boy turning a bolly 27 by 10 at 6250 on MTW 75k only had 2gallons through it.
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06-26-2009, 08:56 PM
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#262 |
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3D wantabe
Join Date: Nov 2007
Location: Middletown, NJ o7748
Age: 62
Posts: 192
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Re: Real world RPM
FTL26cc side carb engine:
7000rpm with a Turnigy 16x8 Cherry prop. 1740 idle. 15' ASL 85*F 85% humidity This was after about 32oz of 32:1 Pennzoil Aircooled. Good acceleration, seems very smooth, a vibe at 2700 rpm, but that my just be the harmonics of the plane it's in.
__________________
Rich Border AMA 77727 Those that beat there swords into plows farm for those that didn't. |
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06-27-2009, 02:47 AM
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#263 |
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Gettin' Lower!
Join Date: Apr 2009
Location: Fort Saint John, B.C. Canada
Posts: 50
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Re: Real world RPM
lol
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08-11-2009, 07:57 AM
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#264 |
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craigk
Join Date: Apr 2007
Location: Sault Ste Marie Ontario
Age: 59
Posts: 63
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Re: Real world RPM
My 2 cents
ZDZ100BN2 MSC 26X10 Premium gas, 40:1 Penzoil BCM dual Pitts muffler - 6000 DL individual mufflers - 6050 and I think this sucks
__________________
Craig |
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08-15-2009, 08:06 AM
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#265 | ||||||||||||||||||
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Bad-ass Super Contributer!
Join Date: Aug 2006
Location: Egg Harbor City, NJ
Age: 42
Posts: 2,008
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Re: Real world RPM
__________________
. . . . . "What We do in Life...Echoes in Eternity"... |
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08-15-2009, 11:23 AM
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#266 | ||||||||||||||||||
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Bad-ass Super Contributer!
Join Date: Jan 2006
Location: Charlotte, NC
Age: 32
Posts: 692
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Re: Real world RPM
Something is wrong.. A buddy of mine has an old ZDZ 100 twin on standard mufflers that would rip the snot out of a 27x10 -- it was stronger than a few DA 100s (with better throttle response, too). It yanked his 28lb 35% Extra around with no problems. |
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08-16-2009, 05:40 PM
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#267 |
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Who put that tree there?
Join Date: Mar 2008
Location: Fort McMurray AB
Age: 51
Posts: 3,854
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Re: Real world RPM
ZDZ Super 80
1 gallon through engine Pennzoil 40-1 75 degrees Xoar Laminated 26x10 Hot engine 6240 rpm |
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08-16-2009, 08:42 PM
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#268 |
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Bad-ass Super Contributer!
Join Date: Nov 2006
Location: phoenix, arizona
Posts: 262
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Re: Real world RPM
DA 170 with KS95(v4) cannisters, at 10.5 inch header length.
Motor just switched to 50:1 H1R synthetic mix. ALL RPMs are from Eagletree wireless telemtry & recording system. 32x10 Mezjlik: Ground rpm = 5750; In flight = 6150. 3W 3D prop: Ground rpm = 5600; In flight = 6600. The 3W 3D prop unloads like crazy.....it will pass noise test on the ground though. I am in the process of installing rpm/temp sensors in my other engines....if this thread keeps living till then, I'll post data for DA100, 3W-150CS & 3W-55CS as well. By the way, on the DA170, on a 100F ambient day(normal summer morning in phoenix!) the rear side of the outer fin gets to just about 300F on a full-throttle upline. Hover temps are actually lower....like 260-270F. The front of the engine cylinders are 100F cooler. Essentially any temp reading with an IR gun at the front of cylinder is crap....that's what I learned, and this was subsequently confirmed by a few other folks who had similar telemetry data. Thanks, Lakshmi |
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08-17-2009, 01:19 PM
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#269 |
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Bad-ass Super Contributer!
Join Date: Jan 2006
Location: Left Coast
Age: 50
Posts: 3,720
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Re: Real world RPM
Lakshmi, you hit the nail on the head. Temps from front to back can vary widely, as so can flying verses ground temps. In-flight is the only true reading, and best taken on the backside at the hottest part of the cylinder. I have been using a $20 venom gauge for years, not nearly as nice as the eagle tree though.
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08-20-2009, 08:38 PM
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#270 |
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Bad-ass Super Contributer!
Join Date: Nov 2006
Location: phoenix, arizona
Posts: 262
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Re: Real world RPM
I was surprised to learn what I did using the eagletree systems...but that was confirmed by other eagletree users as well.
It's hard to argue with actual data! As they say....Live & learn! What is this venom gauge? How does it work? Is it in flight measurement? |
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