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50cc Class readings please.

Old 04-12-2006, 10:09 PM
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Default RE: 50cc Class readings please.

ZDZ 40 RE on a full length ES compostes pipe header at 13 in spins a Mejzlik 22x10 at 7000 on first tank of fuel
Old 05-25-2006, 01:11 PM
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Default RE: 50cc Class readings please.

FOX 3.2, NX 22-8, Stihl oil 50:1 7300 rpm.
Z
Old 05-31-2006, 09:12 PM
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Default RE: 50cc Class readings please.

DA-50R Broken in , Dominator 50:1 , 630ft msl

75degrees.


Menz S 23 x 8 Tru-turn spinner

Stock muffler 7010max 6930 Happy. 29lbs 1 oz thrust.

Bennett Built 3 pipe 6710 6630 Happy. 26lbs 4oz thrust

Slimline Pitts tips uncut, 6510 max 6450 happy. Thrust....why bother.

The Bennett built is slim profile and fits in cowls .
Old 10-04-2006, 12:58 PM
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Default RE: 50cc Class readings please.

ZDZ 50NG, ~3 gallons through it, oil 40:1. Menz-S 22X8 @7500rpm
Old 10-06-2006, 11:48 PM
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Default RE: 50cc Class readings please.

DA50R, 5 gallons trough, 50:1 motul 800, 3000 feet, Mejzlik 22x8, 7000 rpm, MTW75K canister. Needs to lean a little. Some hundreds more expected. Same config PT 23x8, 6900 RPM.
Old 12-02-2006, 06:32 AM
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Default RE: 50cc Class readings please.

Brillelli 46 which is a poulan chainsaw conversion, 7100 with a Mejzlik 20-10 carbon.
Old 04-20-2007, 07:02 PM
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Default RE: 50cc Class readings please.

Duro-power 52cc Conversion engine. Got it for $80. I dont know what fuel mixture was used. These readings were taken by Gaines Smith (he did the conversion on this engine). Engine was tached with 2 different meters on different days.

9000+ RPM with an (OLD) dynathrust 20x10 Peak was 9400
Idle 1500Rpm
All up wieght is 6lbs

[link=http://video.google.com/videoplay?docid=7063498753981003477]Engine Video 1[/link]
[link=http://video.google.com/videoplay?docid=1899399485091143431]Video 2[/link]

The plane for this engine is under construction at the moment.. these figures were from a bench test. The engine has never been in the air.
Old 05-01-2007, 05:22 PM
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Default RE: 50cc Class readings please.

3W 56iB2... Mejzlik 23x8, after a little over 1/2 gallon, on factory settings... 7200 rpm.

Mike.
Old 05-26-2007, 03:53 PM
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Default RE: 50cc Class readings please.

Have now had about another gallon through the 3W now, and is pulling 7320rpm. Still not played with the settings yet though.

Mike.
Old 05-30-2007, 07:31 AM
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Default RE: 50cc Class readings please.

I have the same engine and prop. Do you know what your needle settings are? I get about 6900 on a Menz 22x8. I think my high needle is rich. I'm at 1 3/4 high, 1 3/4 low.

ORIGINAL: Angus Balfour

ZDZ 50NG, ~3 gallons through it, oil 40:1. Menz-S 22X8 @7500rpm
Old 03-17-2009, 04:57 PM
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Default RE: 50cc Class readings please.

DL 50 stock muffler 80:1 amsoil 22B Vess 6900 engine needs tweeking, the cowl was on and its a ***** to take off ........Edit* i will post an update as soon as i get a chance
Old 03-19-2009, 07:53 PM
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Default RE: 50cc Class readings please.

DL50 - stock muffler - 40:1 Redline - XOAR 22X8 7400 about a hundred down from peak.
Old 03-27-2009, 02:04 PM
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Default RE: 50cc Class readings please.

DL JXF 22x8 7400
DA JXF 23x8 6900
Old 08-05-2009, 09:16 PM
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Default RE: 50cc Class readings please.

Da-50R, 22x8 Xoar, on 5th gallon, lawnboy ashless : 7200 RPM
Old 10-12-2009, 04:36 PM
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Default RE: 50cc Class readings please.

DL-50 with about 9 gallons through it, last 2 gallons were Penz 40:1 6600 RTF Xoar 23x8 i think i should be getting more, but ohh well...the engine runs great!!!!
Old 03-12-2010, 01:33 PM
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Default RE: 50cc Class readings please.

DL 55 22x10 menz s on its 4th tanks of gas 6950 and still breaking in
Old 03-12-2010, 03:33 PM
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Default RE: 50cc Class readings please.

RCG 50cc less than 1 gallon through it

Menz 22X8 = 7000 RPM (richened from a peak of about 7200)
Amsoil Saber 100:1 Mixed at 60:1 for now.

IMHO The Menz prop is one of the very best wood props there are.
Old 03-13-2010, 09:18 AM
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Default RE: 50cc Class readings please.


ORIGINAL: MetallicaJunkie

DL-50 with about 9 gallons through it, last 2 gallons were Penz 40:1 6600 RTF Xoar 23x8 i think i should be getting more, but ohh well...the engine runs great!!!!
Hey MJ, that's about right. Mine ranges from 6600 to 6900 on a 23X8 XOAR depending on temps, relative humidity, baro press, etc. Most important, like you said, it's running great!!! It pulls my plane faster with the 22X8 at 7400 but has better pullout for hovering etc with the 23X8.
Old 03-15-2010, 07:12 PM
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Default RE: 50cc Class readings please.


ORIGINAL: Jezmo


ORIGINAL: MetallicaJunkie

DL-50 with about 9 gallons through it, last 2 gallons were Penz 40:1 6600 RTF Xoar 23x8 i think i should be getting more, but ohh well...the engine runs great!!!!
Hey MJ, that's about right. Mine ranges from 6600 to 6900 on a 23X8 XOAR depending on temps, relative humidity, baro press, etc. Most important, like you said, it's running great!!! It pulls my plane faster with the 22X8 at 7400 but has better pullout for hovering etc with the 23X8.
glad to know that Jezmo....
Old 04-25-2010, 11:34 PM
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Default RE: 50cc Class readings please.


ORIGINAL: MetallicaJunkie

DL-50 with about 9 gallons through it, last 2 gallons were Penz 40:1 6600 RTF Xoar 23x8 i think i should be getting more, but ohh well...the engine runs great!!!!

same motor a few gallons later and stronger since Jody at Valley View rebuilt it 6750 mezjlik 23x8
Old 06-03-2010, 01:52 AM
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Default RE: 50cc Class readings please.

DLE-55, 15*C, 3200ft ASL, avg. pressure/humidity:

On the 5th tank at 30:1 dino oil:

Hawk 22x8 = 7250rpm
Xoar 23x8 sword = 6750rpm

I've just ordered a 22x8 and 22x10 Xoar to try as well.


EDIT:
Holy cow!!!! New results after 4 gallons of fuel, still at rich 32:1 dino oil. 25*C and 0 wind. Tested and confirmed with 2 tachs and multiple people watching:

Xoar 22x8 = 7410 (peaked at 7480 fully leaned)!!!!! HOLY CRAP THIS THING IS AMAZING. I can't wait to try Stihl synthetic @ 50:1 for even more rpm.


EDIT2: Alright I'm on to the 45:1 Stihl synthetic!!!
Xoar 23x8 = 6780, confirmed with 2 tachs. Love this engine!
Old 06-13-2010, 05:35 PM
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Default RE: 50cc Class readings please.

RCG 50cc running on  Saber @ 80:1
APC 22X10 6900 (richened from peak)
My altitude is 5400 feet.


Old 06-14-2010, 01:36 PM
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Default RE: 50cc Class readings please.

dle55 menz 23x8 shell advance racing M oil 2% 6690rpm/peak 6720rpm
Old 08-29-2010, 08:25 PM
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Default RE: 50cc Class readings please.

3w 55xi CS with ES 55g CF pipe. 7510 with Xoar 23x10 Eagle Nose prop.
Old 10-16-2010, 07:29 AM
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Default RE: 50cc Class readings please.

Hi!
My MVVS 45cc (Evolution in the US)(Old model with alumium case) turns a Menz 24x8 prop at 6400-6600 rpm using a MVVS small cannister silencer and using 95 okt fuel and 2,5% all synthetic oil.

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