Real world RPM

[The Dirt Doctor]

	Quote: Originally Posted by Jamieman
	ZDZ60RV 30-1 Caltex semi synthetic for running in Mejlik 23 x 8 PA wraparound pitts 6750rpm Sea level

DA 100 (well broken in after 17 gals)
Amsoil @ 100:1
Regular Unleaded Gas
MTW 75K canister
Biela 3-blade 26 x 10
Ambient Temp = 88 F
Relative humidity ~ 60%
Altitude ~ 300 ft
Adjusting throttle curve so was warm/hot when RPM measured
Max RPM = 5890
Idle RPM = 1400


Bobby

[Stu_D]

More updates on my DA 100

DA 100 , K&S 1060 , Mej 28 x 10

Motul 800 @ 50:1

At Sea level

6660 RPM

This engine has been in solid use for 14 months doing IMAC and has burnt lots of fuel , 200 + flights

Stu

[orenb]

bme 115 with ks cans 88vs 1 galon 96 octan 1:32 mineral motul oil
xoar 28x10 6150 rpm
mejzlik 25x12 3b 6100 rpm

[chaikiun]

Any different between two and three blades prop in flying.What is the recommand three blade size for ZDZ 100NG?

[krayzc]

i would stay a 24 x 12 x 3 or a 25 x 12 x 3 depending on power, weight of the plane and were u r located if on can or pipe i would look at the 25 or 26" only

[OverTemp]

Allison T56-A-15
13.5 foot Variable Pitch Hamilton Standard Prop
Sea Level
15C
1,021 RPM at Prop (engine turning at 13,820 RPM)
4591 SHP

4 of them.

[orenb]

bme 115
mejzlik 28x10
oil motul mineral 1:32
1 galon tru
6400 rpm
canister ks 88

[rcign]

New 3W 85
Mejzlik 28-10, 6100 rpm, muffler type unknown...
You want more info, I got this from Bobby at Cactus today...

[RTK]

BME 115 first run
28x10 Mejz
Penzoil 32:1
stock muffler
6700+
warmed up

[scoubidou]

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

[Neogenesis]

	Quote: Originally Posted by Neogenesis
	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.


Neo

[Alejandro G]

Does anyone have the RPM´s for a 3W 80xi? I started mine today, and:
1:32 Mineral Oil
26x10 Bolly Wood
5600 RPM´s.
98 Degrees
75% Humidity
5 Feet AGL....

Any comments please?

[Flatlandman]

	Quote: Originally Posted by Alejandro G
	Does anyone have the RPM´s for a 3W 80xi? I started mine today, and: 1:32 Mineral Oil 26x10 Bolly Wood 5600 RPM´s. 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.

[Alejandro G]

Tx flatlandmand!, i have a 26x10 Mezjlick on hand, im going to try it today. Let you know later!!!

[Zee]

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