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Real world RPM Real world RPM


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Old 07-07-2007, 04:08 AM   #97 (permalink)
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Default Re: Real world RPM
bme 115
mejzlik 28x10
oil motul mineral 1:32
1 galon tru
6400 rpm
canister ks 88
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Old 07-13-2007, 10:01 PM   #98 (permalink)
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Default Re: Real world RPM
New 3W 85
Mejzlik 28-10, 6100 rpm, muffler type unknown...
You want more info, I got this from Bobby at Cactus today...
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Old 07-14-2007, 12:45 AM   #99 (permalink)
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Default Re: Real world RPM
BME 115 first run
28x10 Mejz
Penzoil 32:1
stock muffler
6700+
warmed up
Last edited by RTK; 10-28-2008 at 11:26 AM.
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Old 07-18-2007, 02:14 PM   #100 (permalink)
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Default Re: Real world RPM
super ZDZ-80 RVJ on KS-95 canister, Biela 26x10, Penzoil 32:1, 5 gallons,

-6300-6400 RPM on the ground and 7620 RPM max in flight, no dive.
Daniel
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Old 07-18-2007, 04:14 PM   #101 (permalink)
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Default Re: Real world RPM
Quote: Originally Posted by Neogenesis
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ZDZ 80 RV-J "Super"

89 octane
40:1 breakin oil
4 tanks of fuel through it
3W 26x10 prop
Supersonic Wrap around pitts muffler

6200 RPM on the ground
Since the first one blew a hole in the crankcase....here are some stats on the second one

6 tanks of fuel through it
89 octane
NX 26x10 prop
Supersonic Wrap around pitts muffler

didn't tach on the ground....but 7238 in the air....flat and level.


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Old 07-23-2007, 12:10 AM   #102 (permalink)
low, lower, LOWEST!!!
 
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Default Re: Real world RPM
Does anyone have the RPMīs for a 3W 80xi? I started mine today, and:
1:32 Mineral Oil
26x10 Bolly Wood
5600 RPMīs.
98 Degrees
75% Humidity
5 Feet AGL....

Any comments please?
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Old 07-28-2007, 04:32 AM   #103 (permalink)
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Default Re: Real world RPM
Quote: Originally Posted by Alejandro G
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Does anyone have the RPMīs for a 3W 80xi? I started mine today, and:
1:32 Mineral Oil
26x10 Bolly Wood
5600 RPMīs.
98 Degrees
75% Humidity
5 Feet AGL....

Any comments please?
Those seem like low numbers for that engine. You might want to go to a lighter load prop and get the rpms in the 6200 to 6500 area Maybe a 25x10 bolly or 26x10 mezjlick im not really sure but i know a 25x10 will bring the numbers up and add some life to your engine.
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Old 07-29-2007, 09:04 AM   #104 (permalink)
low, lower, LOWEST!!!
 
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Default Re: Real world RPM
Tx flatlandmand!, i have a 26x10 Mezjlick on hand, im going to try it today. Let you know later!!!
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Old 07-29-2007, 02:37 PM   #105 (permalink)
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Default Re: Real world RPM
Just curious, what is all tose engine rpm's mean? I think engine thrust would be lot more usable information.
For example if I have Menz 28x10 narow blade prop I will show higher RPM than Menz S 28x10 but the Menz S will produce lot more thrust. That is the information I would like to see.
Zee
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Old 08-07-2007, 09:39 AM   #106 (permalink)
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Default Re: Real world RPM
3W85xi, mejzlik 26x10, 94šF, Johnsson Muffler from Cactus Aviation, Penzoil 32:1 First run = 6700rpms, reduced to 6450 for break-in.

John
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Old 08-08-2007, 10:40 PM   #107 (permalink)
low, lower, LOWEST!!!
 
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Default Re: Real world RPM
Hey Flatland, changed the prop to Mezjlik and got 6200, waaayyyy better!!!
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Old 08-14-2007, 05:54 AM   #108 (permalink)
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Default Re: Real world RPM
Nice. I'm glad it worked out.
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