Real world RPM

[RTK]

Not for me

[jamesrxx951]

	Quote: Originally Posted by RTK
	Not for me

+1. looks like even DA is not recomending that oil. there was a small side bar article in one of my model airplane magazines referencing it.

[pe reivers]

MVVS 152 on cans, Vess32A, 6100

[RTK]

DLE-30
stock muffler
65*F
sea level
Menz-s 18x6-8750 rpm, excellent prop for quick response and pull
Xoar 19x8---7100 rpm, slower response, OK pull, good for IMAC

[rcalbuquerque]

DA-200 Mezjlik 30x13 6500 rpm
ZDZ 210 Mezlik 32x12 5600 rpm
Both tested same day
around 45*
5700 ft altitude
Albuquerque NM

[Alexzzz]

	Quote: Originally Posted by rcalbuquerque
	ZDZ 210 Mezlik 32x12 5600 rpm

Seriously? I always thought the zdz210 was much stronger than other engines in its class.....

[3D Trev]

JC Area 102 with a JXF 27 x 10 at 5900 alt 1100ft oil is 40 / 1 lawnmower mix for break in. Total flights on the motor is now 17. Standard exaust

Trev

[Bill Clark]

	Quote: Originally Posted by pe reivers
	MVVS 50 on MVVS 3280 muffler and Mejzlik 23x8 prop, 7600 rpm (~6.55 hp) MVVS 58 on MVVS 3280 muffler and Mejzlik 24x10 prop, 7800 rpm (~10.3 hp) Peak rpm cold at 8000. Data are from MVVS dyno tests: I will ask them to confirm. Edit: MVVS just confirmed above figures. Put that in your pipes and smoke it guys! The data were obtained with the new 3280 muffler, especially designed for higher rpm operation

thats some serious snot!!!!!!!!! cant help but notice the striking resemblence between the Evolution 58 and the MVVS 58. whats the story

[pe reivers]

	Quote: Originally Posted by Bill Clark
	thats some serious snot!!!!!!!!! cant help but notice the striking resemblence between the Evolution 58 and the MVVS 58. whats the story

Same engine, different ignition (basics are same), different assembly location each having their own quality control system. Engine design by MVVS from the Czech republic in Europe.
All parts interchange.

[rcalbuquerque]

	Quote: Originally Posted by rcalbuquerque
	DA-200 Mezjlik 30x13 6500 rpm ZDZ 210 Mezlik 32x12 5600 rpm Both tested same day around 45* 5700 ft altitude Albuquerque NM

After installing new plugs and a slight adjustment the ZDZ 210 turned 5900 today. I have the ZDZ in a 53lb Yak fueled . Vertical is impresive for a plane this size.
Current set up with JMB Canisters

[Alexzzz]

	Quote: Originally Posted by rcalbuquerque
	After installing new plugs and a slight adjustment the ZDZ 210 turned 5900 today. I have the ZDZ in a 53lb Yak fueled . Vertical is impresive for a plane this size. Current set up with JMB Canisters

My 3W200I TS turns a Muller cfk 32*14 at +/- 5500rpm (Pefa mufflers), so the ZDZ is not that much stronger, but it isn't bad, but I expected some more from the ZDZ, maybe it is the altitude......

[rcalbuquerque]

	Quote: Originally Posted by Alexzzz
	My 3W200I TS turns a Muller cfk 32*14 at +/- 5500rpm (Pefa mufflers), so the ZDZ is not that much stronger, but it isn't bad, but I expected some more from the ZDZ, maybe it is the altitude......

I have flown this set up at sea level with a 34x14 prop with incredible performanc. Performance loss at our altitude in my opinon is 20-30%.

[Alexzzz]

	Quote: Originally Posted by rcalbuquerque
	Performance loss at our altitude in my opinon is 20-30%.

Yep, I thought so

[pe reivers]

If the carb is tuned, rpm compare well regardless of altitude. The variables involved cancel each other out. The engine will make less power, but in the thinner air, the prop needs the same amount less power to spin at the same rpm.

[AHP]

	Quote: Originally Posted by Alexzzz
	My 3W200I TS turns a Muller cfk 32*14 at +/- 5500rpm (Pefa mufflers), so the ZDZ is not that much stronger, but it isn't bad, but I expected some more from the ZDZ, maybe it is the altitude......

A buddy of mine had a ZDZ 210 on standard mufflers that would rip the snot out of a ZM 34x14 prop. I don't remember the exact tach figures, but it was in the upper 5000 range. It was a monster -- it drug a 50lb 40% TOC Yak around like a foamie.