Novarossi MEPHISTO.21 MARINE User manual

Carburettor setting starting tuning
www.novarossi.it | store.novarossi.it
The engines must not be modified. All the modifications will make the engine unstable in tuning and weaker in operation. Novarossi
World s.r.l. will not be responsible for any modification on its engines.
1. SAFETY RULES
This product is not a toy but a competition engine. It can be dangerous and it can cause damages if these safety rules are not followed
and the instructions specified in this workbook are not followed. In particular:
- This engine cannot be used under 14 years of age;
- The engine must not be started before having fixed it on the model with 4 screws as explained on the model's manufacturer hand book;
- Do not manipulate or modify the engine in order to avoid dangerous situations. Use it only with suitable pipes. Novarossi World S.r.l. will
not guarantee the safety level of operating certified by the mark if any modification/manipulation is made on the engine itself.
- Only high quality radio controls and components must be used in order to assure a perfect and sure control of the model. In particular
the propeller must be of very high quality to minimize risk of breakage and unpredictable damages.
- The engine must be used only for model purposes.
For a complete list of safety rules see point “safety instructions”.
2. INTRODUCTION
These instructions have been prepared to:
- obtain the best performances from the engines guaranteeing them longer life;
- prevent mistaken maintenance before, during and after the use from generating damages to the engine;
- guarantee a high safety use level of the engine.
3. WARRANTY AND RESPONSABILITY
The warranty covers eventual manufacturing defects (material) but does not cover damages due to wrong or non correct use which does
not correspond to the specifications required at the order of the item. See indications given and limitations specified at point 9 of this
workbook. Any attempt to manipulate or any particular modification will cause the end of the warranty.
4. IDENTIFICATIONS OF THE ENGINE
In the engine box you will find these following documents:
- Identification sheet of the product, it includes batch number of the engine. This number is fundamental to track back the production
date of the engine and must always be transmitted in case of service's request;
- Exploded design of the engine and its carburettor: It includes an exploded design of all spare parts which are part of the engine and
carburettor and their referring part numbers or eventual optional parts.
- Factory carburettors settings Novarossi World reserves the right to modify products without notice.
5. CONNECTIONS / IGNITION STARTING AND STOP
5.1 CONNECTIONS.
Must be made properly following the instructions given by the model manufacturer:
1. Connect the manifold and the pipe to the tank;
2. Connect the fuel tube to the carburettor;
3. Connect the uniball of the carburettor to the servo control;
5.2 IGNITION AND STARTING.
1. Connect the glowplug to the 1.2-Max 1,5 Volt igniter;
2. Throttle by radio-control after you have opened the carburettor to a quarter of its total travel;
3. The ignition and starting system could be different: it could be like car or plane version.
5.3 STOP.
Stop the engine by closing the needle valve through the remote radio control or use a rag to cover the exhaust tip. Be careful!
The exhaust is extremely hot so be sure you are using a thick rag. Attention – Never stop the fly wheel with your hand.
6. RUNNING-IN
Novarossi World S.r.l. suggests to run in properly the engine in order to settle all its mechanical parts. The carburettor is set at the factory
and it only needs adjustments to control the base and full speed needle to get the best tuning. Fix the engine on the car and run it in at
low rpm for at least 30 minutes.
7. TYPE OF FUEL MUST BE USED.
You must use high quality fuel because good fuel grants good performances and long life to the engine. In our opinion the best lubricant
is castor oil (sale code 1N1) which prevents overheating and assists the lubrication of all moving parts such as bearings, crank pins, pistons
and sleeves. Small quantities of synthetic oils are allowed (sale code 1T2).
Fuel composition for running: 14% de gummed castor oil (first pressure acidity lower than 0.5) or 7% castor oil+7% synthetic oil+ 80% pure
methanol+ 6% nitro. Be aware that the compression ratio could vary accordingly to the engine’s operation level, to weather temperature
and pressure. Please follow these steps to optimize your engine in case of temperature fluctuations:
- In a case of a temperature increase, add 0.05 / 0.1 mm head shim.
- In case of a temperature reduction remove 0,05/0,1mm head shim.
Remember to compress your engine removing 0,05/0,1 mm head shims when the altitude increases compared to your normal operating
level. Fuel composition after the running: 25-30% nitro / 6% castor oil / 4% synthetic oil / 60-65% pure methanol.
8. BEST RUNNING-IN CONDITIONS FOR THE ENGINE
It is very important to wisely control the acceleration of the engine in order to make the pipe resonating as quietly as possible avoiding
useless skidding to the model; very often engines break during warm up due to sharp accelerations and to the driver’s frenzy. Sharp
acceleration causes the skidding of the balls of the ball bearing into their sliding guides and consequently wear.
WARNING
BEFORE USING THIS ENGINE PLEASE READ CAREFULLY THIS INSTRUCTION HANDBOOK
Unscrew the high speed needle “A” until it will stop, hold the metal lever
"C" as in the picture (totally opened). Once you reach the stop, screw for 7,5
turns.
Unscrew the low speed needle “B” until it will stop (totally opened). Once
you reach the stop, screw for 3,5 turns, holding the metal lever "D" .
Code: 75066 Code: 11000
A
C
Code: 75065
A
C
B
D
Code: 75065 / 75066Code: 24027
Screw clockwise the high speed needle “A” until it will stop. Once you
reach the stop, unscrew counterclockwise for 3,5 turns.
Screw clockwise the low speed needle “B” until it will stop while
keeping the carburetor barrel fully open. Then unscrew for 5turns
.
0.5 mm
B
C
A
The idle screw “C” is used to set the
mechanical minimum. Pushing the
barrel completely to the end in the
arrow direction, it needs to set the
screw to obtain an opening of about
0,5mm (see the picture). Before to do
this set we suggest to remove the
Venturi
.
N.B. : the tuning can vary depending on the type of
carburetor, track typology and driving style.
D
The screw “D” is the medium speed needle, used for a finer
carburetor tuning. To restore it at the factory setting, you
have to clockwise it until the stop and unscrew
of 1 turn and ¼
.
VERSIONS
Displacement:
R.P.M. Max Power:
Bore x stroke:
Crankshaft:
Glow plug:
Carburettor:
Weight:
3,49 cc
41.800
15,88 x 17,60 mm
14,5mm - Tuned - Turbo - DLC
C6TF
Aluminium - 9mm - 3 needles
265 g (without carb.)
Mephisto.21MH: Rear bearing with ceramic balls
Front bearing with steel balls
Mephisto.21MA: Rear and front steel balls bearing
Available with carburettors Code 24027 / 75065 / 75066 + 11000
MEPHISTO.21 MARINE
Marine Engine - extra long stroke - 9 ports
FUEL TYPE: 25% NITRO
TECH SPECS
RECOMMENDED EXHAUST
CARBURETTORS
TUNED PIPE:
MANIFOLDS:
Cod. 50042 / 50050 / 50054
Cod. 40042 / 40043 / 40045

www.novarossi.it | store.novarossi.it
9. MAINTENANCE / CLEANING / CONSERVATION OF THE ENGINE
9.1 MAINTENANCE OF THE ENGINE AFTER USE.
Before the engine is stored after use, we recommend the following procedure:
1° - 1st Ensure that no fuel remains inside the engine: disconnect the fuel feed line (using a clip or a tape) and wait until it burns out
completely and empty the tank. This is very important in order to prevent oxidation and rusting inside the engine, if fuel is left inside the
engine for any length of time, it will create an acid solution containing alcohol, water and nitro which will heavily ruin the engine. The
con-rod for instance, will turn a lead color, bearings will be darker in the affected areas.
Attention - Please be careful to all moving parts.
2° - Outside cleaning of the engine. For this you can use petrol mixed with 5-10% lubrication oil and a small brush to remove dirt.
Attention – You must proceed when the engine is stopped and cold to avoid contact with moving parts or dangerous high
temperatures.
3° - Inside cleaning of the engine.The same mixture can be used to clean the inside of the engine but before doing this remember to
remove glow-plug and backplate. Place the piston in the top dead center (TDC) before removing the backplate. If you do not follow this
advice you could break the piston against the backplate’s groove, wash and lubrificate with Novarossi oil 1M2.
Do not clean the silicone tuned crankshaft with solvent or
gasoline. Attention – You must procede when the engine is
stopped and cold to avoid contact with moving parts or
dangerous high temperatures. We recommend to use the
following anti-dust covers (cod. 29065) on your crankcase,
carburettor and fuel intake.
YES
TDC BDC
Mephisto.21MH | Mephisto.21MA
RNOVAROSSI WORLD S.r.l.
Via Europa, 20/A - 25040 Monticelli Brusati (BS) - ITALIA
web: www.novarossi.it | e-mail: inf[email protected]
Tel. [phone] | Fax: [phone]
Drawings are just indicative.
EXPLODED VIEW
NOVAROSSI WORLD S.r.l. reserves the right to modify products without prior notice.
50054
Tuned pipe super silenced with cooling.
50050
Tuned pipe silenced.
50042
Tuned pipe super silenced.
40045 Manifold curved 5°, conical, with cooling.
40043 Manifold curved 15°, conical, with cooling.
40042 Manifold curved 180°, conical.
02002T-MT3
29010
08080
08580 05000
04000
06009
05001
14002
19000
20000
17003
27000
75065
18000
18000 19000
21000/2
85028
12000
13045 14001
03001XL
03005XL
03005XL
01001
C6TF
28038
29002
0.10mm
0.30 mm
0.30 mm
03002XL 0.15 mm
03003XL 0.20 mm
Date of last modification:
24-10-2019
Mephisto.21MH
16002 (ceramic)
Mephisto.21MA
16001 (steel)
09023 FN13
(16% nitro)
Exhaust Recommended
MEPHISTO.21M
HIGH PERFORMANCE NITRO ENGINES
11019
11453
11406
11463
11461
11465
11404/A
11457
11036
14492
11354
11455
11355
11005 11357
11358
CARBURETTOR
CODE: 75065
Optional
Optional
07006/18
11020
11029
11047
11043
11019
11042
24125
11005
11016
11007
11021
11010
11012
11009
11041 11034
CARBURETTOR
CODE: 24027
CARBURETTOR
CODE: 75066
CODE: 11000
11457
11036
11465
11461
11463
11000/1
19001
14492
11012
11406
11005
11354/A
11355
11357 11358
14602
11028
11373
11404/B
Mephisto.21MH
rear bearing with ceramic balls
front bearing with steel balls
Mephisto.21MA
rear and front steel balls bearing
For 25% nitro
28025
9.2 PROTECTION OF THE ENGINE.
Rust – Oxidation. Rust and oxidation can be avoided using good quality fuel. Alcohol can contain a high percentage of water or it can
absorb it from the atmosphere being it hygroscopic. The engine can rust even If nitro is not first quality as well. If you note oxidation in
your engine, we strongly suggest to stop using your present nitro and run the engine using only a mixture of alcohol and oil. A good fuel is
composed of alcohol without water, good nitro and de-gummed castor oil of first pressure (acidy lower than 0.5%). Parts mostly exposed
to oxidation and rust due to bad fuel are: ball bearing, shaft and con-rod. Attention – Do not drink fuel or its components and do not
inhale vapors.
Overheating. Overheating can be avoided not using a too lean mixture (low fuel/air ratio). Overheating the engine can cause an increase of
temperature on the engine and the crankpin could turn blue. This means that it reached 200° Celsius. With the crankpin also the con-rod
overheats over 180° Celsius, losing its mechanic al characteristic. In this case we suggest to replace them. Generally when the piston has
been exposed to overheating it will seize near the exhaust and the sleeve will no longer be usable. Overheating can also lead to failure of
the piston and the combustion chamber.
10. SAFETY INSTRUCTIONS
Many indications referring the right and safe use of the engine have been supplied in this workbook. In this chapter we resume and
complete them with other ones pointing out that the user is the only responsible for a safe conduct towards himself, third parties, animals
and locations. Being the engine part of a complex model which can be potentially dangerous, it must be started up after having checked
the model responses to the most important safety requirements. This check must be made by the manufacturer of the model and
assured by the presence of logo on the product.
10.1 - Everybody who can be damaged by the model (above all children) must be kept away from the operator and from the model.
Spectators must always respect safety distances.
10.2 - The engine must be carefully fixed on the model. Be aware that the engine during its operations could generate high temperatures
on itself and on the model where it is installed. The noise is reduced thanks to a silenced pipe. You cannot start the engine without this
pipe.
10.3 - When you start the engine you must keep your face, body and hands away from moving parts (gears, propeller,…). Do not touch the
engine, there could be very high temperatures.
10.4 - All adjustments must be made using instruments (screw drivers) of correct dimensions.
10.5 - You must use a radio control and components of high quality, this allows a perfect control of the engine (acceleration and stop).
10.6 - Keep fuel in a suitable and sure place.
10.7 - Follow with care the safety rules given by different federations, basing on category and use of model.
10.8- Ask always to the shop for any requirements, information and/or to signal any anomalies.
11. CONCLUSIONS – WARRANTY RESTRICTIONS
Novarossi World S.r.l. will always try to use the best materials available to maintain the high quality and reliability of products. We reserve
the right to make changes without notice. No warranty is given for damaged ball bearings, con-rods and couplings installed on the
engine. In fact ball bearing can be ruined by rust and oxidation, caused by the use of bad quality alcohol. Con-rods break for sudden
leanings by bad lubrication for incorrect working of gearbox due to over drive happened also in a previous moment and, above all, for the
use of improper fuel. The same damaging causes to the con-rod may cause an irreparable failure of the sleeve due to the high temperatu-
re reached.
In any case we cannot replace under guarantee any engines or spare parts which after examination present manipulation of one of the
defaults above listed.