The UMS TWIN BOXER 140cc it is a very reliable engine, machined with a very hi precision .
Key Features
- 2 Cylinder in BOXER configuration absolutely stunning looks and realism
- 140 cc displacement perfect for scale project
- Comes complete with exhaust muffler ,spark plugs,electronic ignition, and engine mount ready to run
- User-friendly choke and throttle bellcranks included makes installation and operation easy
- Made from aluminum or bar stock where appropriate and CNC-machined accurate and repeatable specifications each and every time
- Cylinder head and crankcases produced from aircraft grade alloys
- Heavy duty double bearing crankshaft
- Billet aluminum pistons and hardened steel rings
- Hard chromed and lapped cylinder bores
- Hardened steel cams
- Burns 87-110octane gasoline with 32:1 gas/oil mixture
Specifications
2-140CC SIZE
TBD Manual
| Standard | Metric | |
|---|---|---|
| Type | 4-Stroke Petrol | SPARK IGNITION |
| CYLINDER | 2(ABC TYPE) | 2 (ABC TYPE) |
| CAPACITY (CU. IN) | 8.54 | 140 CC |
| Bore | 1.96″ | 50 MM |
| Stroke | 1.43″ | 37 MM |
| Thrust* | 37.50lbf , 30×10 SEP prop | 37.50lbf , 30×10 SEP prop |
| Power (HP) | 9.3 | 9.3 |
| Rotation (RPM) | 1000 – 5500 | 1000 – 5500 |
| Weight | 9.92 lbs | 4.5 kg incl.(silencer ) |
| Engine Width | 11.55″ | 293.6 MM |
| Engine Length | 9.07″ | 230.5 MM |
| Propeller** | 28 x 10 – 30 x 10 SEP | 28 x 10 – 30 x 10 SEP |
| Muffler Type | Collector | Collector |
| Plug Type | CM-6 RcExl | CM-6 RcExl |
| Carburetor | WALBRO WT-225 | WALBRO WT-225 |
Dan Basovitch –
I have Never had an engine that could Idle as reliably as this UMS 140 @ 600 to 800 RPM and then go immediately to full power without hesitation. When at full power it is smooth and constant. I am turning a 30-10 prop. From full power to Idle it never misses a beat and just goes to a smooth idle. This engine is going into my 1/3 scale Balsa USA Pup, replacing a DLE 120.
Dan Basovitch –
Fantastic engine ! this UMS 140CC is amazing. I have been flying R/C for over 55 years and have Never had an engine so reliable. It just Purrrrs.