General Discussion - Scale Model Gas Engines - Hit & Miss - Throttle Governed - Non-Compression

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What fuel are you using? What fuel are you using? SteamerJ · September 05, 2026, 03:28:15 pm I just ordered an OKMO B01 and B02 today. My birthday was in July and I couldn’t think of anything I wanted at the time. After s... 7 Replies · 73 Views Started by SteamerJ	7 Replies 73 Views	2 hours ago by Raphael
Retrol HM-01 quality? Retrol HM-01 quality? SteamerJ · September 06, 2026, 10:15:11 am I like the look and size of the HM-01 and wonder how it compares to Jin’s engines. I would like to hear the thoughts of anyone w... 3 Replies · 28 Views Started by SteamerJ	3 Replies 28 Views	2 hours ago by Raphael
D16 Diesel Side Shaft Engine by Retrol from Stirlingkit D16 Diesel Side Shaft Engine by Retrol from Stirlingkit RedRyder · June 23, 2026, 06:34:14 pm Here is my newly arrived diesel engine by Retrol.I was warned in advance by our friend Miller that it is a messy piece of kit.He... 9 Replies · 251 Views Started by RedRyder	9 Replies 251 Views	July 17, 2026, 10:14:27 am by Fullraceflathead
Found a Couple Retrol Hit & Miss Engines at the Flea Market! Found a Couple Retrol Hit & Miss Engines at the Flea Market! Junkologist · June 24, 2026, 09:57:09 pm I have to share my stroke of luck at the local flea market last Saturday. I was making my normal rounds when I happened to look ... 6 Replies · 127 Views Started by Junkologist	6 Replies 127 Views	June 25, 2026, 12:54:10 pm by tenniV11
OKMO N01 Vertical Single-Cylinder Engine Model OKMO N01 Vertical Single-Cylinder Engine Model JinMachine · June 16, 2026, 06:05:15 am Here is a new engine model for you: the OKMO N01 Vertical Single-Cylinder Engine.This is a structural model of a vertical single... 2 Replies · 177 Views Started by JinMachine	2 Replies 177 Views	June 16, 2026, 11:00:45 am by Raphael
OKMO 1/4 Scale Lister D Engine with some Mods OKMO 1/4 Scale Lister D Engine with some Mods Jim · June 14, 2026, 10:48:07 pm OKMO RETROL 1/4 Scale Lister D Engine with some Mods. I'm so thoroughly enjoying the Lister D and doing some small mods to it.It... 5 Replies · 189 Views Started by Jim	5 Replies 189 Views	June 16, 2026, 07:15:24 am by Fullraceflathead
OKMO 916 model engine OKMO 916 model engine JinMachine · May 22, 2026, 05:11:19 am This is a new 916 model engine. We have been preparing for it for over 2 year. It's time to show it to everyone! It has a cranks... 1 Replies · 191 Views Started by JinMachine	1 Replies 191 Views	May 22, 2026, 05:25:18 am by Jim
OKMO-D01-Type-Stationary-Miniature-Gasoline OKMO-D01-Type-Stationary-Miniature-Gasoline JinMachine · March 14, 2026, 07:53:57 am OKMO L-D stationary gasoline engine model designed to commemorate classic agricultural power systems. Featuring a fully functio... 1 Replies · 2763 Views Started by JinMachine	1 Replies 2763 Views	March 14, 2026, 08:05:48 am by cl350rr
About the B02 ENGINE SEND About the B02 ENGINE SEND JinMachine · January 15, 2026, 09:25:25 pm Hello, I'm very sorry to inform the friends who ordered the B02 engine that due to the sudden need to relocate the factory, it t... 3 Replies · 5174 Views Started by JinMachine	3 Replies 5174 Views	March 05, 2026, 02:40:46 am by Jim
Parcell and Weed Vertical Air Cooled Engine completed Parcell and Weed Vertical Air Cooled Engine completed cheepo45 · March 30, 2023, 02:23:23 pm Hi Everyone,Here is the engine cleaned up and ready for the shows!This was the most challenging of my engine builds to date.it h... 7 Replies · 5879 Views Started by cheepo45	7 Replies 5879 Views	March 03, 2026, 06:32:54 am by crazydoug
OKMO Retrol B02 Miniature Gas Petrol Hit & Miss Engine First Start Up & Running OKMO Retrol B02 Miniature Gas Petrol Hit & Miss Engine First Start Up & Running Jim · February 22, 2026, 03:37:30 pm OKMO Retrol B02 Miniature Gas Petrol Hit & Miss Engine First Start Up & RunningThis is the best out of the box Hit & Miss engine... 0 Replies · 2359 Views Started by Jim	0 Replies 2359 Views	February 22, 2026, 03:37:30 pm by Jim
Seager Olds In Miniature OKMO B02 Arrived & Tested Seager Olds In Miniature OKMO B02 Arrived & Tested RedRyder · February 19, 2026, 07:18:45 pm Jin has once again gone out of his way to produce a great looking and great running scale model of a 1.5 HP Seager Olds Hit & Mi... 4 Replies · 24372 Views Started by RedRyder	4 Replies 24372 Views	February 21, 2026, 10:20:18 pm by Jim
VORTRIXE OKMO B02 Miniature Model Hit & Miss Gasoline Engine VORTRIXE OKMO B02 Miniature Model Hit & Miss Gasoline Engine Jim · February 17, 2026, 11:08:12 pm The absolutely fantastic VORTRIXE OKMO B02 Hit & Miss Gasoline Engine Model Hit & Miss Engine https://www.youtube.com/watch?v=3S... 8 Replies · 22092 Views Started by Jim	8 Replies 22092 Views	February 20, 2026, 11:13:09 pm by Jim
Holt 4 cylinder Caterpillar tractor Holt 4 cylinder Caterpillar tractor Stoker · February 15, 2026, 06:16:00 pm Ran across a photo of a mining operation that was using a very early "Cat" that appears to have the 4 cylinder Holt engine like ... 4 Replies · 3179 Views Started by Stoker	4 Replies 3179 Views	February 16, 2026, 08:15:40 am by Stoker
VORTRIXE & OKMO 1110 Classic Model Vintage Engine - First Run VORTRIXE & OKMO 1110 Classic Model Vintage Engine - First Run Jim · January 03, 2026, 03:58:55 pm VORTRIXE & OKMO 1110 Classic Model Vintage Japanese Yanmar Gasoline Engine with metal piston rings. 1950s Yanmar diesel engines ... 6 Replies · 4838 Views Started by Jim	6 Replies 4838 Views	February 11, 2026, 06:36:51 pm by Stoker
VORTRIXE & OKMO 1110 Classic Yanmar Gasoline Engine Model NOT a Hit & Miss Engine VORTRIXE & OKMO 1110 Classic Yanmar Gasoline Engine Model NOT a Hit & Miss Engine Jim · December 23, 2025, 03:39:31 am VORTRIXE & OKMO 1110 Classic Yanmar Gasoline Engine ModelThis is a really different engine compared to the Hit & Miss engines th... 26 Replies · 32778 Views Started by Jim « 1 2 »	26 Replies 32778 Views	February 11, 2026, 05:04:12 pm by Jim
Retrol Lister D Retrol Lister D Hassellbear · January 01, 2026, 09:14:58 pm Retrol is supposed to release a model of the Lister Type D in January 2026. It’s time to save your spare change. [ Guests can... 0 Replies · 1956 Views Started by Hassellbear	0 Replies 1956 Views	January 01, 2026, 09:14:58 pm by Hassellbear
Thanks Santa!! Thanks Santa!! Hassellbear · December 25, 2025, 03:53:55 pm I worried I was getting a lump of coal [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests canno... 1 Replies · 2538 Views Started by Hassellbear	1 Replies 2538 Views	December 25, 2025, 06:28:02 pm by St Paul Steam
OKMO Microcosm B01 H&M Engine running homemade Baker Fan OKMO Microcosm B01 H&M Engine running homemade Baker Fan Mike P. · November 28, 2025, 07:05:13 pm I decided to build a Baker Fan to add load to my H&M engines together with my other ICE and steam engines. I managed to find an ... 5 Replies · 6583 Views Started by Mike P.	5 Replies 6583 Views	November 29, 2025, 07:13:56 pm by Jim
OKMO B02 hit and miss engine model OKMO B02 hit and miss engine model JinMachine · November 25, 2025, 11:53:11 pm The Hit and Miss engine is a perfect supplement for model enthusiasts and collectors. It has historical sentiments. It will ac... 1 Replies · 3032 Views Started by JinMachine	1 Replies 3032 Views	November 26, 2025, 03:20:03 am by Raphael

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