The UMS 5-75 is a very reliable radial engines which uses gas fuel. UMS has a ton of experience building radial engines. The design and construction are upper class leading to a outstanding realibility of these engines. They are easily servicebale. All critical parts are easily accesisble.
Key Features
- 5 cylinder radial configuration absolutely stunning looks and realism
- 75cc displacement perfect for your scale project
- Comes complete with exhaust collector ring,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 87-110 octane gasoline with 32:1 gas/oil mixture
Specifications
5-75CC 5CYLINDER TECHNICAL SPECIFICATION
| Standard | Metric | |
|---|---|---|
| Type | 4-Stroke Petrol | SPARK IGNITION |
| CYLINDER | 5 (ABC TYPE) | 5 (ABC TYPE) |
| CAPACITY (CU. IN) | 4.5 | 75CC |
| Bore | 1.04″ | 26.5MM |
| Stroke | 1.08″ | 27.5MM |
| Thrust* | 19.8lbf @ 24×10 Menz prop. | 9kgf @ 24×10 Menz prop. |
| Power (HP) | 4.5 | 4.5 |
| Rotation (RPM) | 1000 – 6000 | 1000 – 6000 |
| Weight | 5.9lbs | 2.65kg incl.(silencer ) |
| Engine Diameter | 9″ | 231MM |
| Engine Length | 6.2″ | 162MM |
| Propeller** | 24×8, 24*10 | 24×8, 24*10 |
| Muffler Type | Collector Ring | Collector Ring |
| Plug Type | 1/4-32 RcExl | 1/4-32 RcExl |
| Carburetor | WALBRO WT-621 | WALBRO WT-621 |
5-75CC 5CYLINDER TECHNICAL SPECIFICATION
John Wilson –
I purchased this UMS 5-75cc from Adrian last June as soon as stock became available. It has been an outstanding investment. Very reliable and very easy to start. It has been a great deal of fun. So pleased with the purchase, I recently bought a UMS 5-125cc. Adrian provides fabulous support and super fast shipment. Adrian has gained my loyalty and the one stop, sole dealer for me whenever I need a multi-cylinder radial. I can not speak highly enough about CH-Ignitions and Adrian. There simply aren’t enough “stars” available to give a truly righteous rating for the appreciation I have for this business. As a matter of fact, I also purchased an EME70 from Adrian. Six months later, out of the blue, I received an email inquiry from Adrian asking the status of my engines and whether everything was okay with them. It doesn’t get any better then that!
Alex Fedele (verified owner) –
I recently purchased a UMS 5-75 for my Phoenix GS WACO from Adrian. The engine came within few days in large box. While opening the box, another box was in the large box. As I opened the second box there was a large foam that protects the engine and it components. The engine itself was shrink wrapped and sealed. Tools, ignition module were also included with the engine. A tag reflected that the engine was tested run at the factory for 20minutes along with carb#, engine serial #, UMS stickers and a manual for the engine. I have to admit that before I placed the order Adrian and I exchanged several emails regarding my questions. Adrian explained and answered all of my questions which reassured me that I was ordering from a store where customers are first and deserve the attentions. Adrian answered my questions within minutes of receiving them. I’m sure he wasn’t waiting for my emails, but his responses and service was exceptional. I strongly recommend Ch-Ignition for your engine needs.