NGH Engines have a well deserved reputation for performance and value, they are purpose made model aero engines, not converted chainsaw types. The ongoing development from NGH makes these some of the best available on the market today.
The NGH GTT70 is a very powerful, horizontally opposed twin cylinder 2 stroke engine that is very smooth running & produce excellent mid range torque. Ideal for scale warbirds of prototypes that used radial engines.
This engine has been designed from scratch and features a Walbro carb, RcXEL ignition, ringed piston for better compression and a radial mount for easy bulkhead mounting.
With its striking looks and outstanding performance, the GTT70 Twin it is guaranteed to turn heads on any flying field.
• Compact and lightweight
• Smooth operation
• 2 stroke technology
• Aluminum radial mount included
• Excellent quality and performance
Type: Twin cylinder 2 stroke gas air cooled engine
Bore x Stroke: 37.3 x 32mm
Crank Type: Forged with dual bearing support
Carburetor: Walbro Custom WT1022
RPM Range: 1200 - 7000rpm
Ignition: Auto advanced RcEXL DC-CDI
Ignition battery: DC 4.8~8.4V 1000mAh recommended
Spark Plugs: CM6 RcEXL
Ignition Power: 4.8~6V DC (4~5 cell nimh battery)
Fuel: Unleaded Gas/Oil mix 35:1
Recommended Propellers: 22 x 8 ~ 24 x 10 2 blade
Weight: 2270g with ignition system
NGH GTT70 70cc twin cylinder 2 stroke gas engine
Walbro Custom WT1022 carburetor
RcEXL DC-CDI ignition system
CM6 RcEXL spark plugs
Custom radial mount
Bought this engine whilst at a good price and wanted a twin for a new model. Started to run it in as in the instructions and OK for about 35minutes. The engine started well on the factory settings and looked and sounded fine. Looks well finished. With 22x10 prop the initial impression was very pleasing. Unfortunately after about 45mins of run time a loud rattle appeared from the crank case which quickly developed. On stopping the engine it appears to have real problems - Prop binds, engine knocks, looks like there is an issue with the con rods or big end bearings. With mufflers off and plugs out it turns over OK but once plugs back in and under load it sounds dreadful. Now need to send it back to Hobbyking so not as good a deal as I thought as this is a heavy item. Not sure if I want to chance another NGH GTT70 or maybe I am just unlucky.Mein Motor hat jetzt 2L 1:35 mit mineralischem Öl durch.Eine 22x12 wird locker mit 5400U/min gedreht und das Standgas liegt bei 2200U/min. Eine Feinabstimmung folgt noch. Der Motor sprang erst nicht gut an. Die Luftschraube muss auf 12 Uhr stehen, dann kraftvoll durchziehen. Die Schalldämpfer sind nur als Krümmeransatz zu verwenden, deshalb einen Stern abzug.Very nice engine High Performance easy to start, uses a power distribution with voltage regulator 6v, Prime the engine than handstart and results are very good. Advice this engine if you want a 70CC like boxer!
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