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

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M91 water cooled vertical H&M. A recap. M91 water cooled vertical H&M. A recap. Adirondack Jack · May 22, 2021, 11:52:12 pm The M91 vertical hit and Miss is a nice little engine, but it’s not without its fiddly aspects. With a bit of work, it can be a ... 19 Replies · 5312 Views Started by Adirondack Jack « 1 2 »	19 Replies 5312 Views	April 01, 2022, 08:37:42 am by cheepo45
Hope springs eternal. Whippet water pump, redneck style. Hope springs eternal. Whippet water pump, redneck style. Adirondack Jack · March 28, 2022, 09:13:11 pm While awaiting the missing bits and bobs to make it run, I’ve cobbled up a belt drive water pump conversion for the whippet.Best... 0 Replies · 921 Views Started by Adirondack Jack	0 Replies 921 Views	March 28, 2022, 09:13:11 pm by Adirondack Jack
Starting the new Whippet engine Starting the new Whippet engine Rapmoz · March 25, 2022, 06:48:36 am Just received mine, fortunately for me this one is (almost) complete, missing only a screw.It's a very well made engine with a s... 3 Replies · 1170 Views Started by Rapmoz	3 Replies 1170 Views	March 25, 2022, 10:56:23 am by Adirondack Jack
M90 Engine Displacement QuestionHi M90 Engine Displacement QuestionHi 70Rcode · February 19, 2020, 09:34:57 am Hi all, ...Looking at my M90 instruction sheet specs (and my digital calipers) the Cylinder Diameter at 22mm & an Itinerary (St... 4 Replies · 2124 Views Started by 70Rcode	4 Replies 2124 Views	March 25, 2022, 09:13:02 am by Adirondack Jack
Wrench turning Wrench turning rodnoc · March 23, 2022, 08:41:26 pm Being tired and retired, I'm entertained watching other people work on stuff. If you enjoy tinkering with our model engines, yo... 0 Replies · 928 Views Started by rodnoc	0 Replies 928 Views	March 23, 2022, 08:41:26 pm by rodnoc
Using Castor oil in scale gasoline engines Using Castor oil in scale gasoline engines Dr.Rev.DelmarMacReady · April 09, 2019, 07:57:23 pm I was remembering afternoons by the motocross track, and the smell of hot castor oil wafting through the breeze- and I wondered ... 15 Replies · 6821 Views Started by Dr.Rev.DelmarMacReady « 1 2 »	15 Replies 6821 Views	March 22, 2022, 05:52:43 pm by Adirondack Jack
The Westbury Whippet meets CNC The Westbury Whippet meets CNC Adirondack Jack · March 02, 2022, 07:21:53 pm Drawn with the home machinist in mind, I think ETW would be ok with this, the first factory iteration of the Whippet side valve ... 8 Replies · 2257 Views Started by Adirondack Jack	8 Replies 2257 Views	March 18, 2022, 06:00:34 pm by Adirondack Jack
Whippet review video Whippet review video Adirondack Jack · March 16, 2022, 05:04:20 pm https://youtu.be/OQFXNnfSltE 5 Replies · 1810 Views Started by Adirondack Jack	5 Replies 1810 Views	March 16, 2022, 09:50:18 pm by Adirondack Jack
unidentified 2 cylinder model gas engine unidentified 2 cylinder model gas engine marv in minn · March 15, 2022, 10:47:22 am not for sale, looking for identification of this 2 cyl gas engine. 0 Replies · 895 Views Started by marv in minn	0 Replies 895 Views	March 15, 2022, 10:47:22 am by marv in minn
Rings and Hoses for Microcosm Rings and Hoses for Microcosm rodnoc · March 08, 2022, 05:35:41 pm Piston o-rings used in the various Microcosm internal combustion engines are really tiny! Other than a dealer in China, is there... 1 Replies · 1000 Views Started by rodnoc	1 Replies 1000 Views	March 11, 2022, 09:15:58 pm by Adirondack Jack
M26 engine with Air Power Hammer Model M26 engine with Air Power Hammer Model JinMachine · February 27, 2022, 07:16:11 pm [ Guests cannot view attachments ] https://youtu.be/e8v5WBa9YZs 1 Replies · 959 Views Started by JinMachine	1 Replies 959 Views	February 28, 2022, 02:18:44 am by Raphael
Air Power Hammer Model Air Power Hammer Model JinMachine · February 26, 2022, 01:55:52 am Air Power Hammer Model https://youtu.be/mdfEf8M96j8 0 Replies · 878 Views Started by JinMachine	0 Replies 878 Views	February 26, 2022, 01:55:52 am by JinMachine
Microcosm H74 Microcosm H74 rodnoc · February 18, 2022, 07:06:50 pm The H74 is a LOT of machinery for the money. Those of you who have made engine parts will understand.A few things should be not... 1 Replies · 1035 Views Started by rodnoc	1 Replies 1035 Views	February 18, 2022, 07:43:40 pm by Junkologist
Update on boxer engine Update on boxer engine Adirondack Jack · February 08, 2022, 09:14:41 pm Back in November, I tore down the engine after the oil snafu. I had company coming, so bagged and stowed the project until a we... 2 Replies · 1226 Views Started by Adirondack Jack	2 Replies 1226 Views	February 11, 2022, 10:27:58 am by txlabman
M19 at work M19 at work Rapmoz · October 31, 2021, 01:23:02 pm This small engine deliver a modest power but is full of goodwill ! https://www.youtube.com/watch?v=5W7oR_OP86o[/url] 5 Replies · 1572 Views Started by Rapmoz	5 Replies 1572 Views	February 08, 2022, 09:05:32 pm by Adirondack Jack
Who is hiding the 1/4-32 (5/16 thin-wall deep spark plug wrenches Who is hiding the 1/4-32 (5/16 thin-wall deep spark plug wrenches Adirondack Jack · January 28, 2022, 05:10:41 pm Trying to reach between cooling fins, trying not to crack the insulator, for a hot minute I introduced a cheap six point 1/4 dri... 3 Replies · 1429 Views Started by Adirondack Jack	3 Replies 1429 Views	February 05, 2022, 10:56:55 pm by Paula
WWII miniature power unit. WWII miniature power unit. Adirondack Jack · February 02, 2022, 06:48:55 pm In reading about famed model engine designer E.T. Westbury, I came across mention of his secret WWII era work for the military, ... 2 Replies · 1375 Views Started by Adirondack Jack	2 Replies 1375 Views	February 03, 2022, 08:30:34 am by Adirondack Jack
Early Microcosm Hit & Miss Gas Engine Model Revisited 4 Years Later (The Blue One) Early Microcosm Hit & Miss Gas Engine Model Revisited 4 Years Later (The Blue One) RedRyder · July 31, 2021, 10:22:54 pm Here is a video of my first engine from Jin that I got 4 years ago. Since then it has run for many hours at shows. Much of that ... 5 Replies · 1678 Views Started by RedRyder	5 Replies 1678 Views	January 26, 2022, 01:34:22 pm by ShadetreeMotorcycle
miniature opposed twin R90S boxer engine review miniature opposed twin R90S boxer engine review Adirondack Jack · September 28, 2021, 04:57:45 pm The latest offering from Microcosm and others, the R90S opposed twin engine has arrived. Overall I’m really impressed with the e... 16 Replies · 3818 Views Started by Adirondack Jack « 1 2 »	16 Replies 3818 Views	January 26, 2022, 01:07:59 pm by Woe is me
Engine sizing conventions. Maybe stretching the truth, or maybe it’s more than that. Engine sizing conventions. Maybe stretching the truth, or maybe it’s more than that. Adirondack Jack · January 25, 2022, 02:01:10 pm We have all seen engines marked as a certain displacement, only to find the math doesn’t add up when calculated from the bore an... 0 Replies · 900 Views Started by Adirondack Jack	0 Replies 900 Views	January 25, 2022, 02:01:10 pm by Adirondack Jack

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