Revision as of 20:16, 30 July 2022

Selection

OSE's 2020 choice for an engine is the Poulan 19 hp x4 for 74 hp - [1]

The threshold for relatively inexpensive engines is 19 hp.

27 hp - $980 - $36/hp - [2]. And needs muffler.
24 hp - $870 - $36/hp [3]
22 hp - Briggs - $29/hp - [4]
20 hp - Kohler $700 - $35/hp + muffler - [5]
19 hp Poulan - - $20.5/hp - $390 - [6]
16 hp - $350 - Poulan - [7]. No gas pump, gravity feed gas. But, doesn't come with muffler.
16hp - $330 - Duromax, $20.6/hp - [8]
7 hp - $99 - $14/hp - but no electric start - [9]
18hp Duromax $18/hp - has muffler, but not charging - such as for a fan - [10]

Until an open source engine becomes a reality, engine repair is expensive. $50/hr, easily comes to the new engine price for the $300 gas engine. This indicates that small engines are essentially disposable goods.
For the large diesel engine, parts are expensive.
Until the advent of the open source diesel engine, engine costs remain 10x as high as they should be.
Until the OS engine, disposable engines are a suboptimal but acceptable strategy to keep costs of engine systems low.
It is an immediate priority of OSE to develop open source small engines, $11B market (see Market Size) and larger ones are more like 200 billion

500 &U 1000 hour lifetime for small engines - [15]
2000-4000 year life of car engines [16] - 150k miles
Tractor engines - 5-10k hours [17]
Pellet-fired stirling engine buggy - see PDF file
Several links to various engine types including Sterling, Wankel, Steam, etc. [18].

@@ Line 13: / Line 13: @@
 *16hp - $330 - Duromax, $20.6/hp - [https://www.amazon.com/DuroMax-XP16HPE-Electric-Recoil-Engine/dp/B0040ZWU18?ref_=ast_sto_dp]
 *7 hp - $99 - $14/hp - but no electric start - [https://www.harborfreight.com/65-HP-212cc-OHV-Horizontal-Shaft-Gas-Engine-EPACARB-69727.html?ccdenc=eyJjb2RlIjoiMjYwMDEyOTMiLCJza3UiOiI2OTcyNyIsImlzIjoiOTkuOTkiLCJwcm9kdWN0X2lk%0D%0AIjoiODgxNSJ9%0D%0A&cid=paid_google|*PLA+-+Top+SKUs+-+All+%28Branded%29|Shop+Press|69727&utm_source=google&utm_medium=cpc&utm_campaign=*PLA+-+Top+SKUs+-+All+%28Branded%29&utm_content=Shop+Press&gclid=CjwKCAjw_Y_8BRBiEiwA5MCBJmekp_1bVencitpDjdNbKuXfFBgJjMpvpitWg3gWQVOLRJN7aFkYfxoC450QAvD_BwE]
-*'''18hp Duromax $18/hp''' - has muffler, but not charging - such as for a fan - [https://www.maxtool.com/products/duromax-xp18hp-440cc-18-hp-recoil-start-horizontal-gas-powered-engine?gclid=CjwKCAjwzMeFBhBwEiwAzwS8zIiE5wELYBs-whgO_x3sCukvav0_O4DbexejLwm-PdkdHPIqctL4ERoC4sQQAvD_BwE]
+*'''18hp Duromax $18/hp''' - has muffler, but not charging {{x}}- such as for a fan - [https://www.maxtool.com/products/duromax-xp18hp-440cc-18-hp-recoil-start-horizontal-gas-powered-engine?gclid=CjwKCAjwzMeFBhBwEiwAzwS8zIiE5wELYBs-whgO_x3sCukvav0_O4DbexejLwm-PdkdHPIqctL4ERoC4sQQAvD_BwE]
 =Diesel=