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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › Novarossi 57 or OS 55?
01-14-2010 12:50 AM  8 years agoPost 21
Steff Giguere

rrProfessor

St-Eustache, Quebec, Canada

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Maybe post a vid of someone flying the 57, could help my friend davidevo50 make his choice. David pour quoi tu veut changer ton moteur?

Team Synergy, Rail blades, Team Scorpion, V-Team

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01-14-2010 07:17 AM  8 years agoPost 22
stuartmp74

rrApprentice

Gold Coast, Australia

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01-14-2010 08:03 PM  8 years agoPost 23
Barney

rrKey Veteran

Inverness Scotland

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http://www.http://www.youtube.com/watch?v=3GHhcJ3gcjQ

This is of my stretched and rather porky 600N on 20% Nitro, 620 blades + modded upper mixing arms giving 15 deg pitch. Performance wise the pilot is the limiting factor Towards the end of the flight maybe better illustrates the massive torque this combo pumps out

SPARTANRC Team pilot

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01-14-2010 08:08 PM  8 years agoPost 24
stuartmp74

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Gold Coast, Australia

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Looks a bit cool on that flying day.

I am still trying to work out how your fingers where working
the sticks

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01-30-2010 07:03 AM  8 years agoPost 25
bigwolf1

rrVeteran

USA

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looks like the price came down on the NR57 Grandrc $239 motor /
$339 motor/muffler combo

MAH blade Rep
Trex700LE
Magnum fuels

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01-30-2010 03:30 PM  8 years agoPost 26
rexxigpilot

rrProfessor

Florida

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That would be $239 less the 10 percent discount from Grand RC (code GRC10) until Jan 31st. $215.10, what a deal! I may buy another one.

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02-07-2010 01:30 AM  8 years agoPost 27
tjrhodes01

rrApprentice

walkerton IN. US

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curios as to the temps ive been hearing they run the ragged edge on temps somebody post some numbers

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02-07-2010 02:04 AM  8 years agoPost 28
MAXHSHV

rrKey Veteran

,mn usa

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i put the 6th tank through my rossi 57 today and it rocks in my nx 50
I have 2 m ore on the way with the outrage 56 pipe's.mine pulls 620 widechords at 14/14 and 2200 hs allday long.

Century heli rep. To much power is never enough.

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02-07-2010 03:16 AM  8 years agoPost 29
tjrhodes01

rrApprentice

walkerton IN. US

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what about the temp

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02-07-2010 03:41 AM  8 years agoPost 30
MAXHSHV

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,mn usa

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i was running mine plenty rich and makeing awesome power, didn't check temps but it would mean much anyways cause its about 25f today. it would read cool anyways.
but i have been told the same that they like to run at 220f witch is pretty warm for a nitro.

Century heli rep. To much power is never enough.

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02-07-2010 03:55 AM  8 years agoPost 31
stuartmp74

rrApprentice

Gold Coast, Australia

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Hi tjrhodes01,

Have a look through this thread you will see lots of info on temp.

https://rc.runryder.com/t555668p1/

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02-07-2010 05:20 PM  8 years agoPost 32
tjrhodes01

rrApprentice

walkerton IN. US

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thanks for the link lots of imfo ,i think i will be avoiding the rossi ive heard alot of other oppinions and i think that finalizes it , thanks

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02-07-2010 05:40 PM  8 years agoPost 33
rexxigpilot

rrProfessor

Florida

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The NR 57 makes scary power compared to any other 50 class engine. It is a racing oriented engine with a turbo crank. The nitro car guys know how NR's run. The 57's 2.4 HP scales up to a 91 engine making 3.8 HP. That's serious power, but it comes at the expense of fuel consumption.

The answer to the OP's orginal question is simple. If you want power go with the NR. If you think you may find a race engine too finicky, go with the OS55.

I have both and like the traits of each for different applications. If you have a heavy heli or appreciate raw power, go with the NR. Otherwise, go with the OS for more consistent running and fuel economy.

BTW, both engines are holding up well. I took the NR apart last week after about 8 gallons and it looks good. Some minor rust of the bearing outer race (I live in humid florida, so that is expected), but the balls and all other areas (crank, cylinder, piston, con rod etc.) are clean.

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02-07-2010 11:23 PM  8 years agoPost 34
Wimbledon99

rrVeteran

UK

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Poor Novarossi support in the UK makes the OS the best choice here.

However, US support appears OK so you should be OK in Canada.

Cheers

3D?? No - just another input error!!!

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05-30-2010 07:42 PM  8 years agoPost 35
fung_jeff

rrKey Veteran

Vancouver, BC, Canada

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Its obvious more power: less fuel economy. Less power: more fuel economy.

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06-04-2010 11:37 AM  8 years agoPost 36
lightningrc

rrElite Veteran

UK

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Ive had the OS 55 which was very smooth , but did not seem a huge jump from there 50 for the extra money.

I now run 2 57's , they run rough as hell , but have so much power to me its worth it.

I just set my 57's rich and run the snot out of them , they have awsome power very pleased.

Would be nice one day if you could have the power and a smooth engine but at the moment it just dont balance out .

Mr Luca ive been in the motor trade 20 years and I know if you made a 2 cyliner in flat opposing design the vibes and smoothness would be awsome.

Please design an engine like that for me

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06-04-2010 01:41 PM  8 years agoPost 37
bigwolf1

rrVeteran

USA

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you could be over compresed or to hot on the plug will cause the 57 to have high vibes. try different combination on both.

MAH blade Rep
Trex700LE
Magnum fuels

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06-04-2010 03:29 PM  8 years agoPost 38
Turkana

rrKey Veteran

Montreal,Quebec , Canada

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I put a extra washer under the glowplug and it's smooth as it can be. Running 20% nitro.

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06-07-2010 12:03 AM  8 years agoPost 39
blade3d

rrElite Veteran

New Jersey USA

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YS 56

Blade3d

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06-07-2010 11:10 AM  8 years agoPost 40
lightningrc

rrElite Veteran

UK

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I run the extra bigger shim suppiled as well as standard on 20% fuel.

Was listening to my buddies 57 yesterday and his has only 2 gallons maxium through it , its not as smooth as mine and he has same shims and fuel.

But mine was like that in the early days , not sure how much fuel mine has done but easily be 15-20 gallons and never been apart except for the extra shim.

Power is also the same as my buddies newer engine.

I do go through plugs with it mind , alway have , I would say one every third outing , which equates to about every 18 flights.

Ive just taken the top O ring off carb as recommended on the Rossi site , which may help to get her smoother and stop my plug issue.

Only thing I ask , is I wish Rossi would make a nicer sounding pipe and get rid of that 2 piece design .

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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › Novarossi 57 or OS 55?
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