NovaRossi R57HR 3D Specifications:
- Displacement = 9,35cc
- Max. power = 2,40 hp
- R.P.M (Max. power) = 18.500 R.P.M.
- Practical range = 800 ~ 21.000 R.P.M.
- Bore x stroke = 23,33mm x 21,94mm
- N. Transfer ports = N. 5
- Carburetor Type = 9mm – Rotary
- Material = Aluminum
- Glowplug type = Short Body – HR3
- Weight = 425 grams
NovaRossi R57HR 3D Highlights:
- Crankshaft: The crankshaft is made from high quality steel and is available in Turbo 1/4″ x 28 version.
- Sleeve: The sleeve has 5 transfer ports and is made from iron.
- Crankcase: The crankcase is a new design which fits right away in most commercial available .50 sized Helicopters.
- Back plate: The back plate of the R57HR 3D has been optimized to reduce the dead spaces inside the crankcase.
- Weight: With the use of high tech materials the total weight of the R57HR 3D is kept down to a minimum. 425g
- Piston: The piston that is used in this engine is made from an special alloy which makes it very strong, yet ultra light. We also developed a ring on top of the piston skirt, this will decrease the wear on the piston due to better lubrication.
- Carburetor: This engine has an carburetor with an rotary throttle valve and is available with an optional in-flight mixture adjustment.
Starting from June 1st. the carburetor features a 10mm body instead of 9mm.
This gives an increase in power and response.
Click HERE to download the R57HR 3D Manual
Click HERE to download the R57HR 3D Exploded View
NovaRossi 50357 Tuned Pipe
In parallel to the design of the new 57 engine Nova Rossi also designed a new tuned pipe to produce the absolute best performance. While the Nova Rossi R57HR 3D is compatible with any existing 50 tuned pipe on the market, the Nova Rossi pipe is the only one specifically design for the engine. If you want every bit of power out of your engine, this is the pipe you need.
Click HERE to go to the Nova Rossi Tuned Pipe home page.
NovaRossi 40357 & 40358 Tuned Pipe Manifold
Nova Rossi has two manifold options for the 50 tuned pipe. Part number 40358 has a total of 25mm offset from the engine, and is designed for heli’s like the Align T-Rex 600N that have a carbon fiber chassis. Part number 40357 has a total of 30mm offset from the engine, and is designed for heli’s like the Thunder Tiger Raptor 50 that has a plastic chassis and requires more clearance for the pipe.
Click HERE to go to the Nova Rossi Manifold home page.
Parts Quality/Fit — Score:10
No surprise here given Nova Rossi’s legacy, the R57HR 3D has amazing quality. When you hold it in your hand you get the feeling you are holding a fine Italian machine.
The tuned pipe and manifold are no exception. Both are very unique in the 50 market, they use a system that to date has only been seen in 90 tuned pipes. In fact the design of the manifold and how it connects to the muffler is identical to Hatori’s 90 pipes. The manifold has two red o-rings which I’m happy to report are a much tighter fit then the ones Hatori uses. This means when you go to install the pipe on the manifold the o-rings don’t want to squish out. Another thing I noticed was the manifold reminded me of the Kasama manifolds for the Hatori pipes. The port in the manifold is dead center to the pipe and very smooth in/out. Another nice feature of the manifold is both the mounts for the pipe and engine are threaded, no nuts to mess with here.
Installation — Score:10
When Nova Rossi first announced the new 57 engine the most commonly asked question was “will it have the same bolt pattern as a OS/YS 50?”. In the past this has not been the case, but certainly is with the R57HR 3D. This engine uses the exact same bolt pattern as a OS 50. That means any heli the OS/YS can be installed in, the Nova Rossi can as well
With that said, my review heli for this engine is my trusty Align T-Trex 600N. I’ve installed and ran both OS 50 and YS 50 in this same heli. Install was just as plug and play as a OS/YS engine. The high speed needle sticks out a little farther so pay attention when sliding the motor in not to get hung up on the lower plate. I remove the throttle arm on the carb during motor install so less chance of it getting hung up as well.
As I mentioned earlier there are two tuned pipe manifold options, one for Raptor and one for T-Rex. I decided to first try the Raptor manifold that has more offset to see what would happen, sure enough it would not work on the T-Rex 600. The manifold hit the lower plate and you would have to remove too much of the plate to make it work. So lesson being when you order your pipe/manifold make sure you get the correct one.
Engine, tuned pipe, and manifold were all a simple bolt-in affair with no surprises or issues.
Once installed I went to setup my throttle linkage. On the carb there is a high, low, and three mid marks engraved to aid in setup. While setting up my linkage I found out something that is a little different then OS/YS and worth noting. With my OS/YS motor I would set the throttle arm at 50% throttle on the radio to the middle mark on the carb. Then I would have equal throw high/low for full open and close of the carb. Also when going to set my idle it would only require 10-20 clicks of throttle trim for a nice idle. Well I found on the Nova the low was not enough for full close, and I had to either move to the lower of the three marks or run more ATV on the throttle low side. When I went to start the motor for the first time I had to throttle up way too much to get a idle. Short story, carb fully closed is WAY below engine cut and idle. Set your mid point to the middle mark on the carb and have equal throws high/low.
Starting needle settings for break-in. Like the OS/YS engines the Nova Rossi has two needles; low speed (idle/hover), and high speed. Per the manual you want to screw the high speed need in completely, then open the needle 2 full turns. Now for the low-speed needle the Nova is different then every other engine. First the low speed needle is located in the middle of the throttle arm opposite of the high speed needle. Also this needle you open full counter clockwise, then close the needle 4 full turns to start. One of the most handy things I found with this engine is the both needles can be adjust with a 2.5mm hex wrench. A lot easier then trying to spin the needle with your fingers.
High speed needle = full closed clockwise, then open counter clockwise 2 turns
Low speed needle = full opened counter clockwise, then close clockwise 4 turns
Flight Performance — Score:10
The manual suggests a gentle but fairly short break-in. They suggest running the first 5 tanks at approx 80% throttle. So I set my gov head speed to 1800 and ran 5 tanks taking it easy, with no 3D and mostly sport flying to allow the motor time to properly break-in. The key is not necessarily running a full tank of nitro through the motor, but more the heating up and cooling down process for each of the break-in runs. This process properly seats all the components in the motor assuring a long powerful life for the engine.
One note on the first time I fired up the engine. I found the manual’s low speed needle setting to be too rich. The motor was very hard to get started and would not hold a idle more then a couple seconds then flame out. I adjusted the low speed needle 1/4 turn and bingo, motor started perfectly and idled great. In fact this was the easiest starting motor I think I’ve had in the 600N to date. To make sure the motor starts easily and fast each time take note in the manual where it says first turn over the motor for 10 seconds with the carb fully open and no glow. This primes the motor, so when you turn over with glow at low throttle it will instantly fire. This is the same procedure as the YS engines.
Once break-in was complete it was time to flip into idle up and see what this motor could do. The first thing you notice is the sound, not sure if it’s the motor itself of the pipe, but this combo has a very unique sound. However when it came to tuning the motor the sound was a small obstacle. I’m used to tuning 50 engines by mostly sound. Well this Nova Rossi motor/pipe combo always sounds lean, even when it’s pouring fuel out he muffler rich. So you will need to tune by smoke, temp, and general flying instead.
Power, power, and then some. The motor even rich and still within the first gallon of fuel has just tons of power. I can honestly say easily more power then my previous YS 50 and Hatori combo that it replaced in the T-Rex 600N and the motor is not fully broken-in. I was able to increase my pitch a couple degrees and no sign of bog from the motor with some proper collective management. I’m really looking forward to get another gallon or two through the motor and see what it can really do.
Click HERE to see a video Lukas Riva flying the Nova Rossi R57HR 3D engine in a Align T-Rex 600N.
For more info visit the Nova Rossi R57HR 3D home page by clicking HERE.