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Old 04-19-2007, 05:12 PM   #76
Flatlandman
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Default Re: Real world RPM

DA50 vess 23a with a slimline ptts after 10 gallons 6750 rpm

same motor after a new piston and piston ring 4 gallons more breakin
23a vess with slimline the rpms dropped to 6400 so i replaced the muffler with a stock da50 side dump and the rpms jumped to 6850 rpms with a lot more grunt in the mid range.
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Old 04-21-2007, 12:23 AM   #77
Tired Old Man
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Default Re: Real world RPM

Taurus TS-52
J&A wrap around Pitts and Bisson wrap around Pitts
87 LL, Stihl oil at 50-1, two gallons through the engine, hovered and flown hard the first flight on.

100' asl
Menz "S" 22-8: 7,500rpm (TNC tach)
MSC 22-8: 6,850rpm (pulls like a truck)
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Old 04-24-2007, 08:24 AM   #78
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Default Re: Real world RPM

da50 on canister
ptmodel 23x8
100 octane + 2,5% elf competition
7050 rpm
110 N of static thrust (24,25 lbs)
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Old 04-24-2007, 08:50 AM   #79
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Default Re: Real world RPM

3W150 QS
Fuchs 33x12
LL Canisters
Warm enough to fly
Can't change elevation so I never looked it up.
Full Moon
Morning dew
on grass
Northern Hemisphere
Earth
RPM Don't care the plane pulls hard


I have found myself in the past driving myself crazy chasing Ghost RPM's that somebody else clames to achieve with a similiar setup. Do yourself a favor, Fly the plane. If it Runs well and has ample power for your application, put the RPM meter away and fly.
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Last edited by Dangerous Dan; 04-24-2007 at 11:04 AM.
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Old 04-24-2007, 10:59 AM   #80
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Default Re: Real world RPM

Brison 3.2
ES Composite Pipe on a 12" header
23A Vess = 6890
22A Vess = 7170


jack strickland that is good news as i will not be buying anymore non repairable ignitions for any of my gassers when they fail.

Last edited by krayzc; 05-01-2007 at 11:31 AM.
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Old 05-04-2007, 04:19 AM   #81
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Default Re: Real world RPM

DL50
Xoar 23-8
Stock muffler
6700 rpm
Altitude 6800, 32-1 oil, 87 octane gas
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Old 05-04-2007, 01:01 PM   #82
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Default Re: Real world RPM

DA-150 32X10 MEJ PROP ON 120 OCTANE RACING FUEL 9000 RPM LOVE THOSE DA MOTORS HOPE DAVE WARRANTEES THIS ONE !!! LOL
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Old 05-04-2007, 02:33 PM   #83
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Default Re: Real world RPM

Quote: Originally Posted by SUPERFLYJAY
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DA-150 32X10 MEJ PROP ON 120 OCTANE RACING FUEL 9000 RPM LOVE THOSE DA MOTORS HOPE DAVE WARRANTEES THIS ONE !!! LOL

Not if he reads your post
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Old 05-04-2007, 09:57 PM   #84
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Default Re: Real world RPM

Gotta get me one of those 54 hp DA 150s...Does Dave know he's making those ?
My 289cc racing twin is only about 30 hp...
Peter Goldsmith runs DA 150s in his race plane, he sure would like to have one like yours, he can get only about 210 mph with his...At about 10,000 with a much smaller race prop....
The best race engine so far is a 200cc Aerrow twin, 244 mph...Yours would be a killer, is it for sale ?
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Old 05-04-2007, 10:04 PM   #85
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Default Re: Real world RPM

Brillelli 60
Vess 23A(original version)
Stock exhaust
7100
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Old 05-08-2007, 02:14 PM   #86
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Default 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.


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Old 05-08-2007, 09:55 PM   #87
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Default 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
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Old 05-18-2007, 03:21 AM   #88
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Default Re: Real world RPM

Brison 3.2
ES Composite Pipe on a 12" header
hot #'s
22A Vess 7300
22 x 8 Xoar 6900
22 x 8 Mejzlik 7350

23 x 8 Xoar 6800
23A Vess 6870
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Old 05-23-2007, 03:42 PM   #89
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Default Re: Real world RPM

DA-100
Belray H1R @ 50:1
Menz 27x10
Stock Exhuast
Hot after flight
Sea-level
70F
6600-6700 RPM
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Old 05-28-2007, 06:34 AM   #90
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Default 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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