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HelicopterEngines Plugs Mufflers Fuel › Novarossi Hr57-3d New Heli Engine Generation
10-22-2009 09:37 AM  8 years agoPost 601
MaSt0RaS

rrApprentice

Greece

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Guys i just damaged copletely my OS 50 and i want a new gen engine like OS 55 YS 56 or Nova 57... i here that Nova are great engine but from the post i see a lot of problems... With the shims what shim to put with the plugs and also with the carb.. someone says to change it with the os carb.... I want a motor that has power and its easy to tune....

Can you helpr me??? thx..!

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10-22-2009 09:46 AM  8 years agoPost 602
Wimbledon99

rrVeteran

UK

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Hi MaStORaS,

The N57 is a great engine but I haven't run the os55 / YS56 so can't offer a comparison.

All I will say is that as long as you following the advice on tuning, you will be rewarded greatly with the Novarossi. The engine's performance to date is amazing

Just make sure that the spares availability is OK. In the US it seems OK. Over here in the UK it is not.

Cheers

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

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10-22-2009 10:19 AM  8 years agoPost 603
MaSt0RaS

rrApprentice

Greece

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the problems about the rpm that can go up to 2050rpms cause of the turbo??

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10-22-2009 12:43 PM  8 years agoPost 604
Git

rrVeteran

Brunei

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my rex57 works best at 1950-2050 @ 115-120deg C running head temp...tried 2100 and 2150 but bogged.. however, it's not climbing out from hover quite how i want it to be.. still waiting for the metal throttle arm so i can use the stock card.. still using the os at the mo

Alees Rush 750

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10-22-2009 02:11 PM  8 years agoPost 605
esmoglo

rrKey Veteran

Florida USA

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So what is the consensus here on the plugs? Please chime in!

Ugly can be fixed stupid is forever!

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10-22-2009 02:29 PM  8 years agoPost 606
rexxigpilot

rrProfessor

Florida

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No need for the OS carb. The Rex carb was easy for me to tune and no sticking problems like the Redline53. This engines make a lot more power than the OS55. The two are not even close (2.1 hp for the OS and 2.4 for the Rex).

In my experience, the turbo crank does require an agressive headspeed to stay in the boost rpm range. I have 8.7 gears on my SDX. Just below a HS of 2050 puts the engine at an rpm (17,800) where it is on the edge of the boost and it runs poorly. It will ocillate on and off the boost making a waaaah waaaah sound. At 2050 and above the Rex makes great power and runs very smooth. With 8.5 geaing the critical HS is 2100 based on engine rpm of 17,800. You may need to run a 2150 HS with 8.5 gears for smooth operation.

Turbo issue aside, I highly recommend this engine over the OS55.

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10-22-2009 07:18 PM  8 years agoPost 607
ININVERNO

rrApprentice

San Leandro - Ca - USA / Mandello del Lario - IT

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Dear Novarossi addict…
I am sorry for the people that say that tune the Novarossi is hard stuff.
I always say is not difficult, but just different from OS.

Novarossi engine talk his language and tell you what going on, don't thinks that I am crazy, just working every day in testing I now understand his language, he talk to me every fly…too rich...too lean... just practice is easy.

Some of you soon will pass 100 fly... and power will not decrease, bearing will ok... hahahah so longer life this engine, personally I service the engine each 400 fly... bearing, and all coupling parts...

Here one of my low fly with my Rex 57, H5 tuned pipe, hr 3 glow plug and 0.5 shim with Rapicon 30.

Sorry for the final but after 7 minutes of low I was tired.... ahahah at my age (45) I must kill him in the ground, so tired ahahahahahah.

http://www.youtube.com/watch?v=5CoS...o&feature=email

About tech request I advise to send me a PM or mail at info@lynxheli.com, from there I can contact you better and support you with mine enthusiasm.
I always around for testing and some time I cannot read all the thread,,,... sorry. Hope for your understanding.

Friendly Luca

Luca Invernizzi - ininverno@yahoo.com

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10-22-2009 08:32 PM  8 years agoPost 608
Tail_BoomStrike

rrKey Veteran

N.A.

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I wonder if NR would release a non turbo type crank for this engine.... There's no doubt about this engines power and toughness.... I'm thinking turbo lag is what's causing tuning issue..... I have to install hyper 50 carb on mine before I could nearly eliminate the anomalous surging-like-effect during the loading and unloading...... But it's still there, a slight hint of it.....

I'm a little bit confused about some of you guys needle settings though. Thte low needle, when the barrel is closed, would only go in from fully out 5 full turns in..... When barrel is open, it could go in to about 9 full turns.... The manual's break-in position of 4 full turns in, is very lean, as the engine comes back very hot from hovering, even with very rich 2 turns out high needle.... And also explained by how it needs to be richened when starting to lean for power, as the engine wouldn't even start unless richened a 1/4 turn, So that brings down the position 3-3/4 in from fully open....... Best power showed up on mine, with stock carburator, at 1 + 4-8 clicks open on high needle...... Low needle have to be richened from 3-2 in from fully open to take care of the engines surging.......

All of the shims on mine are installed.... Actually, I added extra one.... Since the weather is starting to get cold, and I'm running 30% nitro.... So mine's probably .065 or.07..... I also noticed that tuning became a lot more forgiving..... I also observed that in a more compressed state, tuning somewhat fall within 1-2 click apart between too lean or too rich to get the sweet spot and it doesn't stay the same the next day out in the feild...... More compressed, requires colder plug too, or it produces a funny knocking sound..... Less compressed, slightly hotter plug to realise best power....

This engine can be really revved high, but the best torq, is somewhere in between 17000-18000 rpm.... I noticed, running tremendously high head speed, doesnt hold under loading.... until it hit the torq band in the lower rpm range..... which to me poses a problem when doing certain maneuver, as the heli suddenly jumps when unloading, as the head speed recovers...... So I have my Idle 2 adjusted to probably 2150, idle1 2050....

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10-24-2009 03:11 AM  8 years agoPost 609
JohnThompson

rrApprentice

Chesapeake, VA

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I got my 57 this week. After running the 5 sloppy rich tanks I started working to get it powerfull. The leaning process is nothing like OS and very confusing. I tried to set the idle half way between closed and the first of the 3 needles. I set the 50% throttle at the center of the 3 middle marks. Idle is sloppy rich and cuts off. If I lean it to idle better it hangs (rin nin nin nin noise) when I hit throttle hold. Is there a setup video or more descriptive help tuning this thing?
with a rich 2-1/8 low needle I started closing the high needle and got 149 backplate and 198 head. I leaned the low needle 1/2 and the temps went to 115 and 209.

It has more power than my hyper 50 but it sounds off and idles bad.

Thanks,
John

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10-24-2009 04:26 AM  8 years agoPost 610
huskynox

rrNovice

Irvine, TX

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If you're running 30% the sweet spot seems to be 4.5 turns in from full out on the low, and 1-5/8 out from full in on the main. I personally think the instructions are off for normal flight. They are sloppy rich.

Try the settings listed above. If you're running 30% they should be fairly close. Also, this is running at 17,500-18,500rpm with a .5mm shim.

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10-24-2009 05:08 AM  8 years agoPost 611
JohnThompson

rrApprentice

Chesapeake, VA

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I am running 30% youngblood with a .05 shim. What low needle position is used to run 4.5 turns in? I am trying to follow the direction in this thread with idle between the closed and first of the 3. When I lean the low needle that much it is running at high RPM. I am confused by the actual setup of the throttle.

John

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10-24-2009 10:24 AM  8 years agoPost 612
w12martin

rrVeteran

Chengdu, Sichuan, China

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This is my short experience with glow plugs.
Breake in was made with an OS 8, 20% nitro and 0.04mm shims!
From the begining it was very difficult to run the NR57 consistently along the whole tank and during the 5 tanks needed for breake in.
From full tank the engine was runing extremely rich (hovering) but at the end of the flight the smoke desapeared and rpms increased too much!! After the brake in, I installed the Novarossi N3 and I couldn't made the engine runing consistent along the flight and transitions were too bad. Power was awesome but even with a rich setup, the temp was about 60C!
Next plug was an OS 7! Everithing became smooth and consistent along the flight with a nice temp about 51/56C but I noticed a significant decrease in power/torque.
Finally I installed an OS A5 and it seems to run smooth, consistent, nice temp about 55 at the end of the flight and great power.
The engine has only 13 flights and temperature in here is about 15C.

BTW I use to fly at the sea level but I'm wondering if I could notice some lack of power if I fly the same heli/setup at 400 meters?

Regards

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10-24-2009 02:19 PM  8 years agoPost 613
ININVERNO

rrApprentice

San Leandro - Ca - USA / Mandello del Lario - IT

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enya 3 maybe is little warm, but you can try, normally the 57 like colder pugs O5, Align 4 or Novarossi HR3.
About the carb smar, Novarossi sale a special Needles with clutch built-in system that help greatifully the user in the setting becasue you don't need to disconnect the linkage to set it.

About mix tuning is easy , but different to OS, ASLO as we tell to every one Novarossy engine come from standard super tuned, than like each engine tuned like run at the specific RPm that was designed for.
The 57 run very good between 17000 to 19000 perfect for heavy 3D in your 50 size heli.
About temperature , don't use OS one reference, but use the Novarossi than back plate 50 / 55 and head 110 / 120 and enjoy you.

about Turbo cranck shaft is a tuning operation very important for power and recover.

Luca Invernizzi - ininverno@yahoo.com

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10-24-2009 03:02 PM  8 years agoPost 614
JohnThompson

rrApprentice

Chesapeake, VA

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You say:
About mix tuning is easy , but different to OS
Well it might be easy once you have seen it and done it, but it is very difficult when you need to learn it. NR should post some video's or photo's with descriptions to aid those of us that have only known the OS way.

Thank you,
John

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10-24-2009 03:08 PM  8 years agoPost 615
ININVERNO

rrApprentice

San Leandro - Ca - USA / Mandello del Lario - IT

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You perfect right
In Novarossi we work to make 2 videos
1- tuning the engine and some info
2 -service the engine, than explain how to mantain you engine.

I need make different video and than mount it in one nice one, we will post it probably in one of two week.
Thanks

Luca Invernizzi - ininverno@yahoo.com

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10-24-2009 03:32 PM  8 years agoPost 616
JohnThompson

rrApprentice

Chesapeake, VA

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Thanks!

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10-24-2009 07:17 PM  8 years agoPost 617
esmoglo

rrKey Veteran

Florida USA

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Yes a video would be a great idea.

Ugly can be fixed stupid is forever!

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10-24-2009 08:14 PM  8 years agoPost 618
MaSt0RaS

rrApprentice

Greece

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and when these videos are going to come out??

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10-24-2009 08:20 PM  8 years agoPost 619
Heli 770

rrProfessor

USA.

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Read three posts up.

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10-24-2009 10:16 PM  8 years agoPost 620
huskynox

rrNovice

Irvine, TX

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skydivejohn,

Yes, you will have to close the throttle barrel slightly when leaning the low needle. Not a big deal. Probably around .050-.070". Wherever it idles nice for you. Try the needle settings described and adjust slightly from there to meet your need.

I was running my Trex 600 head at 2180 (motor rpm - 18,500) with these settings. Back plate was 134F and head was 248F... just about perfect to what Luca recommends.

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HelicopterEngines Plugs Mufflers Fuel › Novarossi Hr57-3d New Heli Engine Generation
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