Zenoah G290 29 cc motor? RC Car Specialists: TPS Racing!

Zenoah G290 29 cc Motor

After the successful G230 and G260 came the new generation of Zenoah engines. In terms of construction largely the same with as big change the assembly of the cylinder with 4 bolts instead of 2. This G290RC has a capacity of 29 cc and 28 mm stroke.

Technical improvements:

Lighter and stronger crank case
3 supporting crank shaft bearings
New cylinder cooling ribs
Re-shaped and enlarged transfer ports
Combustion chamber modified
Walbro WT990 carburettor

Technical Data:

Cylinder capacity: 28.5 cc
Cylinder bore: 36 mm
Cylinder stroke: 28 mm
Cylinder mount: 4 screws
Crank bearing: 3 pcs.
Power: 2.75 HP at 13,000 rpm
Pulling force: 1.76 NM at 9,000 rpm
Idle speed: approx. 4200 rpm
Max. speed: approx. 19,500 rpm
Fuel consumption: approx. 600 g/kw
Carburettor: WB990
Spark plug: NGK CMR7H
Spark plug gap: 0.65mm
Ignition system: Transistor charger ignition (TCI with BTC 30° / 8000 URPM)
Starting system: Pull starter
Effective compression ratio: 9.9
Recommended fuel: 1:25, 40 cc oil to 1 litre 98 octane fuel
Overall dimensions (L166 x W205 x H196 mm)
Weight approx.: 2.1 kg

This Zenoah can easily be converted to a 23, 26 or 29 cc versions by conversion sets.

Conversion sets:

G240 23 cc: ZN1001
G270 26 cc: ZN1002
G290 29 cc: ZN1003

This engine has the same installation dimensions as:

Zenoah G230
Zenoah G240
Zenoah G260
Zenoah G270
Zenoah G290
Chung Yang, Dynamic and similar

Installation in BWS, LOSI and TLR models:

If you want to install Zenoah motors in the mentioned models, you can replace the large engine cover with TPS7004 so that the mounting holes on the chassis match. However, there is also the possibility of assembling the Zenoah in its entirety, this i.c.m. another engine mounting plate. This is rotated 180 degrees on the carburetor side mounted.

You need the following gears:

18 gear: LOSB5802
19 gear: LOSB5804
20 teeth gear: LOSB5805

Engine is delivered complete but without clutch, engine flange and exhaust. For optimal use, we recommend the PSR-2 Race olie, and TPS™ Air filter system. All parts and tuning parts are available from stock!

Explanation carburetors:

WT990 Standard carburetor without choke
WT990BB without choke and the gas valve shaft double ball-beared
WT990BBS without choke and RVS 340 tuning gas valve shaft double ball-beared, (recommended)
WT997 Optional carburetor with choke and the gas valve shaft double ball-beared
WT997BB Optional carburetor with choke and the gas valve shaft double ball-beared
WT997BBS Optional carburetor with choke and RVS 340 tuning gas valve shaft double ball-beared, (recommended)

Engine running in:

1) Use 1:25 fuel mixture, 40 cc good quality 2-stroke oil on one litre 98 Octane fuel
2) Carb needles both 1 1/4 turn open
3) Start first time let it run at idle for 2 minutes until is had normal temperature
4) Run first tank of fuel normal but without reaching high speed, this will take approx 45 minutes
5) Let it completely cool down
6) Run second tank of fuel, now start reaching high speed shortly, this will take approx 40 minutes
7) Let it completely cool down
8) Visual check in exhaust port, check for leakage
9) Third tank drive it like you normal would do, but still reaching high speed shortly, but building, this will take approx 35 minutes