Engines: Difference between revisions
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*For the $/hp ratio, the 212 cc range appears as good as the 16 hp range. 420 cc for 2 - cheaper than any 440 cc. | *For the $/hp ratio, the 212 cc range appears as good as the 16 hp range. 420 cc for 2 - cheaper than any 440 cc. | ||
*{{check}}Predator HF $150 212 cc - [https://www.harborfreight.com/generators-engines/engines/65-hp-212cc-ohv-horizontal-shaft-gas-engine-epa-69730.html]. Performance review is solid [https://www.youtube.com/watch?v=vtUtORbNLsA] | *{{check}}Predator HF $150 212 cc - [https://www.harborfreight.com/generators-engines/engines/65-hp-212cc-ohv-horizontal-shaft-gas-engine-epa-69730.html]. Performance review is solid [https://www.youtube.com/watch?v=vtUtORbNLsA] | ||
*With electric start - 212 cc - $ | *Walmart $144 7.5 hp 212 cc Electric Start [https://www.walmart.com/ip/212CC-7-5-HP-4-Stroke-Gas-Engine-Electric-Log-Splitter-Start-Side-Shaft-Motor-Power-3600Rpm-Overhead-Valve-Design-Industrial-Grade-OHV-Gasoline-Compr/3026349682?wmlspartner=wlpa&selectedSellerId=101194933&adid=222222222273026349682_101194933_14069003552_202077872&wl0=&wl1=g&wl2=c&wl3=42423897272&wl4=pla-295289030566&wl5=9023314&wl6=&wl7=&wl8=&wl9=pla&wl10=657413077&wl11=online&wl12=3026349682_101194933&veh=sem&gclid=Cj0KCQjw4vKpBhCZARIsAOKHoWQOYnwYNzPDaqCcP5Y0VbNhcetgCC2mr5PYoC6852u942JpP8DPEn8aAoOOEALw_wcB | ||
*{{check}}{{check}}Honda GX160 clone - $ | *With electric start - 212 cc - $170 [https://www.amazon.com/YIYIBYUS-Electric-Horizontal-4-Stroke-Industrial/dp/B09BKNG3D6/ref=asc_df_B09BKNG3D6/?tag=hyprod-20&linkCode=df0&hvadid=532737912949&hvpos=&hvnetw=g&hvrand=10937276401938065381&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9023314&hvtargid=pla-1411248082058&psc=1#customerReviews] | ||
*{{check}}{{check}}Honda GX160 clone - $160 - 6.5 hp [https://www.amazon.com/Starter-Pressure-Universal-Mounting-Pattern/dp/B0C85P6195/ref=sr_1_5?keywords=6.5+hp+engine&qid=1698508869&sr=8-5] | |||
=20 hp Range= | =20 hp Range= | ||
Revision as of 16:16, 28 October 2023
About
- 2-strokes have 3-9 hp at 50 cc. See cc to hp - [1]
- Ex - Stihl MS 660 is 7 hp and 91 cc
50 cc with Electric Start
- $209 -[2]
3hp
- $40 - [3]
6.5 hp
- For the $/hp ratio, the 212 cc range appears as good as the 16 hp range. 420 cc for 2 - cheaper than any 440 cc.
Predator HF $150 212 cc - [4]. Performance review is solid [5]- Walmart $144 7.5 hp 212 cc Electric Start [https://www.walmart.com/ip/212CC-7-5-HP-4-Stroke-Gas-Engine-Electric-Log-Splitter-Start-Side-Shaft-Motor-Power-3600Rpm-Overhead-Valve-Design-Industrial-Grade-OHV-Gasoline-Compr/3026349682?wmlspartner=wlpa&selectedSellerId=101194933&adid=222222222273026349682_101194933_14069003552_202077872&wl0=&wl1=g&wl2=c&wl3=42423897272&wl4=pla-295289030566&wl5=9023314&wl6=&wl7=&wl8=&wl9=pla&wl10=657413077&wl11=online&wl12=3026349682_101194933&veh=sem&gclid=Cj0KCQjw4vKpBhCZARIsAOKHoWQOYnwYNzPDaqCcP5Y0VbNhcetgCC2mr5PYoC6852u942JpP8DPEn8aAoOOEALw_wcB
- With electric start - 212 cc - $170 [6]
- Honda GX160 clone - $160 - 6.5 hp [7]
20 hp Range
Selection
OSE's 2020 choice for an engine is the Poulan 19 hp x4 for 74 hp - [8]
Gas
The threshold for relatively inexpensive engines is 19 hp.
- 27 hp - $980 - $36/hp - [9]. And needs muffler.
- 24 hp - $870 - $36/hp [10]
- 22 hp - Briggs - $29/hp - [11]
- 20 hp - Kohler $700 - $35/hp + muffler - [12]
- 19 hp Poulan - - $20.5/hp - $390 - [13]
- 16 hp - $350 - Poulan - [14]. No gas pump, gravity feed gas. But, doesn't come with muffler. Has 15A charging. Muffler - [15]
- 16hp - $330 - Duromax, $20.6/hp - [16]
- 7 hp - $159 - $22/hp - but no electric start - [17]
- 18hp Duromax $18/hp - has muffler, but not charging
- such as for a fan - [18]
Diesel
- 30 hp Kubota $5000 - $166/hp [19]
- 33 hp Kubota - $6500 [20]
- 65 HP - $6300 - $100/hp [21]
- 200 hp - $55/HP - $11k - Cummins - [22]
- 360 HP Mack used - $10/HP - $3600
- 300 hp [23] $7500 [24]
Considerations
- 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
Engine Links
- 500 &U 1000 hour lifetime for small engines - [25]
- 2000-4000 year life of car engines [26] - 150k miles
- Tractor engines - 5-10k hours [27]
- Pellet-fired stirling engine buggy - see PDF file
- Several links to various engine types including Sterling, Wankel, Steam, etc. [28].
Types
Rotary