This is the GT25 25cc (1.52cu) Gas engine from NGH. Well suited to 1.20-1.50 sized glow models, this engine offers lightweight and fantastic power output for it's size; 2.7hp @ 11,000rpm.
This is a good quality gas engine and comes complete with the reliability of an RCEXL CDI ignition system. Full installation and run-in instructions are also included. The GT25 is not only a great little performer, it looks great too! Featuring a sand cast crankcase, contrasting blue anodized prop driver and a Walbro carburetor for easy tuning.
This package is economical to run in comparison to similar sized glow engines. Get some gas engine economy for your model today!
NOTE: Do not run with less than the manufacturers recommended fuel : oil ratio!
• Electronic ignition system included
• Walbro carburetor
• Beam type mounting for easy glow engine replacement
• Compact muffler
Engine type: Single cylinder, 2-stroke, air-cooled
Bore/Stroke: 33.2 x 29
Piston displacement: 25cc
Max. power: 2.7HP/11,000rpm
Min. idle Rpm: 1600rpm
Practical RPM: 1600-11000rpm
Ignition: Rcexl CDI with auto advance
Spark plug: 1/4 x 32 Rcexl
Carburetor: Walbro WT series
Lubrication oil: 2 cycle Engine Oil API TC / JASO FD or better specs. (Mobil + M2T)
General use fuel: 25:1~30:1
Propeller range: 15x10 ~ 16x10
Length backplate to propeller boss: 120.1mm
Mounting: 58mm x 25mm
Height from crank centerline to spark plug tip: 110.6mm
Weight: 1065g (including ignition and muffler)
Habe das Einlaufen heute abgeschlossen. Motor startet gut und ohne Probleme, er nimmt das Gas schn und kontinuierlich an. Einzig die Vibrationen sind etwas hoch. Aber sonst ein guter Kauf
It seems to be a good engine. I have finished today the break-in. It is easy to start and also to restart. Only the vibrations are a little bit high. It works continuosely from low to full throttle-position.Starker Motor dreht eine 17x8 Luftschraube mit 7800 U/min. 6 kg Schub leider sehr starke vibrationen wahrscheinlich ist die Kurbelwelle nicht gerade. Habe den Motor nur gekauft wegen den kleinen Abmassen.This is a really powerfull engine. I use it for my 1,80 m P-47Mine arrived with the idle screw poking out of the postal box. no protection at all. screw bent but easy fix. Engine seized got it free and now has very notchy crank bearings. Not off to a good start.. will have to strip down and check. or send back
I purchased the engine January 2014 and installed it in my Sukhoi. After around 20 flights, the engine lost completely the compression. I can turn the propeller without any resistance. To start only with e-starter. Would like to know if somebody had also this bad experience and what could be the reason.Nice little motor. found bottom end mixture way to rich on start up had to go in 1.5 turns.
after that ran it for 20 minutes on the ground with varying revs then let it cool down,
had to re tighten the exhaust after the cool down, but other than that and the minor tune
it runs sweet with 16 x 8 prop. only pulls 8200 rpm with this prop but its plenty and runs well. mine came with the Hi voltage ignition module that will handle 8.4v so with a life battery no bec required. all in all not a bad little motor. no issues with the motor in the air ether with the first days flying so thats a good sign.I have one of these crashed and the complete muller needs to be replaced... I can not find out wich one to order.. please help :-)Here's a couple of links showing the ARF from HK and the Engine during the break-in period. You can see a lot of other accessories from Hobby King:
https://www.youtube.com/watch?v=TbMCWqAeHik&list=PLJ_xfZXvbmoing4umx_HB2U7JS0EJGl6h&index=2Nach dem Einlaufen ein schner Motor, leicht zu starten, sehr kraftvoll.
Kann ich nur empfehlen fr Modelle 6 - 8 kg.A very good engine, however in the box a spring comes to put inside the spark plug cap. A sketch shows how to instal it. But during the flight the cap becomes loose, due to the spring, and the current interferes in the receiver and the airplane remain without control. Therefore I recommend not instal the spring. May be someone can give me another advice.