Autocycle Engines - Melson to Zundapp |
| Manufacturer | Model / hp | Spark Plug |
| Manufacturer | Model / hp | Spark Plug |
| Meslon | 50cc 10mm fitting | Y-6 | Swallow | Gadabout 18mm fitting | 16 |
| Mercury | Mercette 48cc | N-8B | Swallow | Gadabout 122cc | L-10S |
| Mercury | Hermes | L-10S | Swallow | Gadabout 197cc | L-11S |
| Messerschmitt | ---- | 17 | Teagle | ---- | XJ-8 |
| Mini-Motor (Trojan) | ---- | J-8 | V.A.P. | ---- | L-8 |
| Mobylette | 49cc | L-10 | Velosolex | 14mm fitting | L-8 |
| Mo-Cyc | 1953 on | L-10 | Vespa | 98cc | J-8 |
| Mo-Cyc | 10mm fitting to 1952 | Y-6 | Vespa | 1951-52 125cc | L-10S |
| Mosquito | Britain | L-10 | Vespa | 1953 on 125cc | H-10 / L-10S |
| Mosquito | Italy | J-12 | Vespa | Grand Sport 14mm 3/4" reach | NA=8 |
| M.V. | 425 (3M) 4M Scooter | L-10S | Vincent | Firefly | L-8 |
| Nannucci | 50cc | L-10S | Zundapp | Bella 150cc | L-10S |
| Nannucci | Parilla Greyhound 153cc | NA-8 | Zundapp | Combinette 50cc | L-10 |
| New Hudson | Autobyk 18mm fitting | 16 | | | |
| New Hudson | Autobyk 14mm fitting | L-10S | | | |
| Norman | XXA 98cc | 7 Com L | | | |
| Norman | 98cc 2F | L-10S | | | |
| Norman | Nippy 50cc | L-10 | | | |
| N.S.U. | Quickly | L-10S | | | |
| Oscar | 197cc Scooter | L-11S | | | |
| Oscar | 125cc Scooter | L-10S | | | |
| Phillips | ---- | L-8 | | | |
| Powerpak | ---- | L-8 | | | |
| Puch | Scooter 125cc | L-10 | | | |
| Rohr | Roletta 197cc | 17 | | | |
| Rudge | Autocycle | 7 Com L | | | |
