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HelicopterEngines Plugs Mufflers Fuel › Novarossi R91HR 3D-V2 Owners Thread
01-19-2010 09:19 AM  8 years agoPost 1
stuartmp74

rrApprentice

Gold Coast, Australia

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Hi All,

I just received my new Novarossi Engine by international courier today from Lynx Heli Innovations. http://www.lynxheli.com/

There service was Excellent. I am not joking it was totally amazed to
hear the courier knock on my door today.

I placed the order on the 16th of January at 6:50Pm I received it on the on 19th of January at 3:00 Pm

I believe 'Lynx Heli Innovations' is located in San Leandro, California, U.S.A.

I am located in Gold Coast, Australia.
Man that's Fast.

I thought it might be a good idea to start a New Thread for owners of this engine.

I have taken some photos of the packaging and contents.

I must say it is a vast improvement on the packaging that came with my N57 that I bought back in April 2009.

Although to be fair the N57 was one from the first batch sent out.

The Entire box was wrapped in plastic and inside the box the Engine its self was wrapped in plastic as well as embedded in protective foam insulation.

I have also included some photos of the Rex H9 Muffler and accessories.

This is my first 90 size heli so I am very excited to get this build under way.

Some points I noticed about this Engine are.

1. It is not the same as the R91HR 3D-3N that I believe was the first model number released by Novarossi. There are a few parts that have changed. I have compared that parts list between the two engines and listed the new part numbers below.

New Part No --- Old Part No. --- Description
19000 ------------ 11012 ----------- Carburetor fuel inlet nipple
02704-V2 ------- 02700 ----------- Outer Cylinder Head
15702 ------------ 15700 ----------- Crank Shaft
13902 ------------ 13900 ----------- Engine Backing Plate

On Visual inspection of the new head it appears to have greater cooling capacity that the old one.

The cooling fins extend right up flush with the tip of the glow plug.
It also has some smaller hole in the inner section of the head near the glow plug to allow for extra cooling. Very Nice design IMO

I will take some photos of the engine internals and post them when I get time.

So far I am very happy.

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01-19-2010 09:32 AM  8 years agoPost 2
gorn

rrElite Veteran

Western Australia

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got mine locally.
I only have about 9 tanks through it, and am still dialling in needles.
So far I can say its easy to tune, and has no odd tendencies.

As for power, too soon, and I know for a fact Im running quite rich still.
So unfare to comment on it yet.

For the love of the hobby

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01-21-2010 11:54 AM  8 years agoPost 3
stuartmp74

rrApprentice

Gold Coast, Australia

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Internals
Just finished disassembling the engine and I have taken some photos to show the Quality and Craftsmanship that goes into a Novarossi Engine.

Some of you may think I'm crazy to disassemble a new engine.

You may ask the question why do it.

Well I am a Mechanical Engineer and I enjoy seeing how things work.
Not only in basic terms like the piston goes up and down etc.

I Enjoy the Detail. I try and picture how each part was designed
what materials were selected & why. How was each part Manufactured etc.

I especially enjoyed working out exactly how the 3 Needle carburetor delivers the fuel into the venturi chamber.

Very Nice work Novarossi. The fuel is fully metered and controlled throughout the entire opening of the carburetor's barrel.

Each part appears to be Manufactured to the highest standard.

They must have some pretty sophisticated machinery at the Novarossi factory to product parts of such quality.
Not to mention the skills they must have in aluminum casting.
Check out the Engine Block for instance. This is a very complex part. Talk to any Metallurgist or Mold Designer and they will tell you what involved not a 5 minute Job that for sure.

Each parts is also well finished off there are no burrs or excess swarf to be seen.

I like to how all parts have been laser etched with the Novarossi Logo and Part Number.

Well I think that is enough said and I will just let the pictures
speak for themselves.

What do you Guy's think of the Novarossi R91HR 3D-V2 Internals?

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01-21-2010 12:00 PM  8 years agoPost 4
gorn

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Western Australia

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Yours looks a bit different to mine.
My head does not have the carbsmart cutouts, and my backplate is webbed, not basically smooth like yours.

Odd as mine says HR91 3D Rex, and has the 3 needle carb.

Also, my cylinder head is completely round, not squared off on the sides like yours.

Hmmm

For the love of the hobby

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01-21-2010 12:10 PM  8 years agoPost 5
stuartmp74

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Gold Coast, Australia

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Gorn,

I see you live in Western Australia.

Who did you buy your engine from?

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01-21-2010 12:11 PM  8 years agoPost 6
gorn

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Western Australia

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Takeoffandland.com.au

I got Toby to order it in for me just before Christmas.

For the love of the hobby

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01-21-2010 12:11 PM  8 years agoPost 7
gorn

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Western Australia

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This is what mine looks like http://www.helidirect.com/novarossi...ine-p-15965.hdx

For the love of the hobby

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01-21-2010 12:19 PM  8 years agoPost 8
stuartmp74

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Gold Coast, Australia

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I believe that was the first Model R91HR 3D-3N
Check out my first post where I list the differences.

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01-21-2010 12:22 PM  8 years agoPost 9
gorn

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Western Australia

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yep, your correct.

Wonder what they changed with the crank?

My factory needle setting were way off too.
Im running much leaner than stock settings, and am still only at 63deg head temp.

It runs just fine though lol.
Long flights

For the love of the hobby

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01-24-2010 12:59 PM  8 years agoPost 10
snowman999

rrNovice

nottingham

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to place an order from lynxheli, you need to send email

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01-24-2010 10:57 PM  8 years agoPost 11
ZHOLLIS

rrNovice

San Leandro, CA USA

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Snowman -

Lynx distributes Novarossi products through authorized dealers and Lynx field representatives. For any questions about this, please PM me or check out our website at http://www.lynxheli.com

Zachary Hollis, Lynx Heli Innovations

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01-25-2010 04:52 PM  8 years agoPost 12
helinewby

rrKey Veteran

Orlando Florida

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Novarossi and Odin
i believe my engine is the same as yours Gorn! Just starting to break the engine in. started right up on saturday but as i gave a little throttle would cut off. waiting for the weather to break looks like rain all week But a very nice engine for sure.

Running Magnum 30% and all shims...

Team TSA Models, Team YS, Team Spin Blades..

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01-26-2010 01:01 AM  8 years agoPost 13
gorn

rrElite Veteran

Western Australia

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mine does the same thing.
Im playing with the mid and idle needle to see which needle is doing it.
Mid seems perfect in every other way, but havent had much time to tweak the idle to see if it helps.

For the love of the hobby

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01-26-2010 10:13 AM  8 years agoPost 14
blingboy

rrNovice

australia

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my mid is at 1 and a half turns out and high is at 2 and 4 clicks and the idle is about half a turn in from the instructions and it runs perfect , hope this helps

blingboy

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01-26-2010 10:30 AM  8 years agoPost 15
gorn

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Western Australia

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thanks mate.

For the love of the hobby

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01-30-2010 10:45 PM  8 years agoPost 16
stuartmp74

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Gold Coast, Australia

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CarbSmart Sensor Location
Which of the three locations is correct for the CarbSmart Sensor?

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01-30-2010 11:31 PM  8 years agoPost 17
gorn

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Western Australia

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top one.
Sensor should be equal in height with top of combustion chamber.
Going to do mine this week.

For the love of the hobby

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01-31-2010 12:00 AM  8 years agoPost 18
stuartmp74

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Gold Coast, Australia

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I would have though that location 2 would have been better.

So you are saying location 1 ?

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01-31-2010 04:18 AM  8 years agoPost 19
gorn

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Western Australia

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Whichever fin it is that is level with the top of the combustion chamber (inside), thats the one to use.

For the love of the hobby

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02-01-2010 10:39 AM  8 years agoPost 20
ININVERNO

rrApprentice

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

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Location 2 in your picture, Into one of the 2 holes
The sensor must placed using thermal epoxypotting and closer possible to the compustion chamber.

TTYL

Luca Invernizzi - ininverno@yahoo.com

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HelicopterEngines Plugs Mufflers Fuel › Novarossi R91HR 3D-V2 Owners Thread
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