Engines: Difference between revisions

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*2-strokes have 3-9 hp at 50 cc. See cc to hp - [https://www.cardosystems.com/blog/how-much-horsepower-does-a-motorcycle-have/#:~:text=Lightweight%20motorcycles%20with%2050cc%20usually,from%2010%20to%2020%20HP.]
*2-strokes have 3-9 hp at 50 cc. See cc to hp - [https://www.cardosystems.com/blog/how-much-horsepower-does-a-motorcycle-have/#:~:text=Lightweight%20motorcycles%20with%2050cc%20usually,from%2010%20to%2020%20HP.]
*Ex - Stihl MS 660 is 7 hp and 91 cc
*Ex - Stihl MS 660 is 7 hp and 91 cc
*1 hp for $25 for simple small engines.
*1000 hp are $25k for the largest tractor in the world.
=50 cc 2 stroke=
*Only 1.3 hp? $50 about. [https://www.amazon.com/dp/B07D7MQMG6/ref=sspa_dk_detail_0?ie=UTF8&psc=1&s=automotive&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWxfdGhlbWF0aWM&pd_rd_i=B07D7MQMG6&pd_rd_w=LPmM7&content-id=amzn1.sym.386c274b-4bfe-4421-9052-a1a56db557ab&pf_rd_p=386c274b-4bfe-4421-9052-a1a56db557ab&pf_rd_r=E4GSNA2P8T4EE9PDTQZ7&pd_rd_wg=YVZvv&pd_rd_r=754e62e1-68bc-4153-84b1-a58bb1dc8587]
=Large=
*JD 9 series engine, 14.l, 450 hp - around $30k [https://www.vanderhaags.com/detailview.php?part=24890575]


=50 cc with Electric Start=
=50 cc with Electric Start=
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=6.5 hp=
=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.
*For the $/hp ratio, the 212 cc range appears '''slightly better than''' 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]
*GX160 Walmart $134 [https://www.walmart.com/ip/TFCFL-4-Stroke-6-5HP-Single-Cylinder-Gas-Engine-160cc-Air-Cooled-For-Honda-GX160-OHV/1778710694?from=/search]
*{{check}}GX160 clone Walmart $134 [https://www.walmart.com/ip/TFCFL-4-Stroke-6-5HP-Single-Cylinder-Gas-Engine-160cc-Air-Cooled-For-Honda-GX160-OHV/1778710694?from=/search]. Elect. start $70 more [https://www.walmart.com/ip/Electric-Start-Kit-Starter-Ignition-Fan-Cover-Fit-Honda-GX160-GX200-Flywheel-Kit/1425634583?from=/search]
*{{check}}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}}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 [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]
*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]
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==Gas==
==Gas==


Note: at $15-20/hp - if the engine is considered 'disposable', it is actaully a good choice. Old copies can be used for parts, as long as the same engine is used. If there are different engines with different parts, maintenance is onerous.
*{{check}}{{check}}$225 for 15 hp. Aliexpress US ship - $15/hp. [https://www.aliexpress.us/item/3256806896343578.html?src=google&src=google&albch=shopping&acnt=708-803-3821&slnk=&plac=&mtctp=&albbt=Google_7_shopping&gclsrc=aw.ds&albagn=888888&isSmbAutoCall=false&needSmbHouyi=false&src=google&albch=shopping&acnt=708-803-3821&slnk=&plac=&mtctp=&albbt=Google_7_shopping&gclsrc=aw.ds&albagn=888888&ds_e_adid=&ds_e_matchtype=&ds_e_device=c&ds_e_network=x&ds_e_product_group_id=&ds_e_product_id=en3256806896343578&ds_e_product_merchant_id=5345481834&ds_e_product_country=US&ds_e_product_language=en&ds_e_product_channel=online&ds_e_product_store_id=&ds_url_v=2&albcp=20268592310&albag=&isSmbAutoCall=false&needSmbHouyi=false&gad_source=1&gclid=Cj0KCQjwsuSzBhCLARIsAIcdLm4f_JF8JYlJ_rRXt3zGJFAZ8OjyZ4V1aiOGJn8ZUnB1AhqEPdXpvTcaAhenEALw_wcB&aff_fcid=c4338b482f5b48dc86c3ed1f12594f3a-1719256435966-09270-UneMJZVf&aff_fsk=UneMJZVf&aff_platform=aaf&sk=UneMJZVf&aff_trace_key=c4338b482f5b48dc86c3ed1f12594f3a-1719256435966-09270-UneMJZVf&terminal_id=0246e15293524158a520213957d8ed21&afSmartRedirect=y&gatewayAdapt=glo2usa#nav-review]. Down to $166 for the same - [https://www.aliexpress.us/item/3256808307673920.html?spm=a2g0o.productlist.main.19.4b39aed8e2CZKY&algo_pvid=3b67438e-b61b-4c1d-bcaa-30527b17baa6&algo_exp_id=3b67438e-b61b-4c1d-bcaa-30527b17baa6-18&pdp_ext_f=%7B%22order%22%3A%22-1%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21USD%21768.92%21166.06%21%21%215508.00%211189.49%21%402103146f17489275841667844e2ea7%2112000045394988097%21sea%21US%210%21ABX&curPageLogUid=ZRY6S3jR2A26&utparam-url=scene%3Asearch%7Cquery_from%3A]
'''The threshold for relatively inexpensive engines is 19 hp.'''
'''The threshold for relatively inexpensive engines is 19 hp.'''
*27 hp - $980 - $36/hp - [https://www.amazon.com/Briggs-Stratton-49T877-0004-G1-Commercial-Cyclonic/dp/B00IUAYGVG/ref=asc_df_B00IUAYGVG/?tag=hyprod-20&linkCode=df0&hvadid=167118301188&hvpos=&hvnetw=g&hvrand=13505321821607907613&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9023315&hvtargid=pla-506378404232&psc=1]. And needs muffler.
*27 hp - $980 - $36/hp - [https://www.amazon.com/Briggs-Stratton-49T877-0004-G1-Commercial-Cyclonic/dp/B00IUAYGVG/ref=asc_df_B00IUAYGVG/?tag=hyprod-20&linkCode=df0&hvadid=167118301188&hvpos=&hvnetw=g&hvrand=13505321821607907613&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9023315&hvtargid=pla-506378404232&psc=1]. And needs muffler.
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*22 hp - Briggs - $29/hp - [https://www.amazon.com/Briggs-Stratton-44N677-0045-V-Twin-Engine/dp/B0858GV39D/ref=pd_sim_86_4/135-5451773-8908211?_encoding=UTF8&pd_rd_i=B0858GV39D&pd_rd_r=b2fd4784-f49d-483f-a9c1-5e942e862e95&pd_rd_w=n2DXp&pd_rd_wg=UXGzI&pf_rd_p=d338b989-51db-4d99-9bd8-988f67d205eb&pf_rd_r=FV1EP1JHT6QVGZ2EC2XC&psc=1&refRID=FV1EP1JHT6QVGZ2EC2XC]
*22 hp - Briggs - $29/hp - [https://www.amazon.com/Briggs-Stratton-44N677-0045-V-Twin-Engine/dp/B0858GV39D/ref=pd_sim_86_4/135-5451773-8908211?_encoding=UTF8&pd_rd_i=B0858GV39D&pd_rd_r=b2fd4784-f49d-483f-a9c1-5e942e862e95&pd_rd_w=n2DXp&pd_rd_wg=UXGzI&pf_rd_p=d338b989-51db-4d99-9bd8-988f67d205eb&pf_rd_r=FV1EP1JHT6QVGZ2EC2XC&psc=1&refRID=FV1EP1JHT6QVGZ2EC2XC]
*20 hp - Kohler $700 - $35/hp + muffler - [https://www.amazon.com/Kohler-KT715-3047-7000-Vertical-Engine/dp/B07VMBP6TY/ref=sr_1_6?dchild=1&keywords=19+hp+poulan+engine&qid=1602900506&s=lawn-garden&sr=1-6]
*20 hp - Kohler $700 - $35/hp + muffler - [https://www.amazon.com/Kohler-KT715-3047-7000-Vertical-Engine/dp/B07VMBP6TY/ref=sr_1_6?dchild=1&keywords=19+hp+poulan+engine&qid=1602900506&s=lawn-garden&sr=1-6]
*'''19 hp Poulan''' - - $20.5/hp - $390 - [https://www.ebay.com/i/254194614988?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=254194614988&targetid=935431404933&device=c&mktype=pla&googleloc=9023315&poi=&campaignid=10454521601&mkgroupid=104612011660&rlsatarget=pla-935431404933&abcId=2146002&merchantid=101723803&gclid=CjwKCAjwiaX8BRBZEiwAQQxGx--SgNgCEmMPgC4Ek30zXf6Lo18eX2SlvgzHy47POZRs2Sc3yRgR4hoCUU4QAvD_BwE]
*'''16 hp - $350 - Poulan''' - [https://www.ebay.com/i/264276331029?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=264276331029&targetid=935431406293&device=c&mktype=pla&googleloc=9023315&poi=&campaignid=10454521601&mkgroupid=104612011660&rlsatarget=pla-935431406293&abcId=2146002&merchantid=101723803&gclid=CjwKCAjwiaX8BRBZEiwAQQxGx9r4Y-vyQnNyLjRltvMhrrzHpTKhKKBBNDEfRq-c8V7h6kQwfRsCShoCjSwQAvD_BwE]. No gas pump, gravity feed gas. But, doesn't come with muffler. {{check}} Has 15A charging. Muffler - [https://www.ebay.com/itm/175165248847?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D240677%26meid%3D2b51c87e17db41738024f15042da8d56%26pid%3D101195%26rk%3D1%26rkt%3D12%26sd%3D222836122238%26itm%3D175165248847%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv9PairwiseWebMskuAspectsV202110NoVariantSeedKnnRecallV1BERT%26brand%3DStens&_trksid=p2047675.c101195.m1851&amdata=cksum%3A1751652488472b51c87e17db41738024f15042da8d56%7Cenc%3AAQAHAAABQEro4ql1SUJ1li87bKftud%252BHNR6f%252BZqZvMWaqvYIq1S%252FWkIBqj9FQDQRu6mAcNzuioXWUR932%252F68tDooavd6O6Q4JdsmO1z0012m9wfVebmJhTuY76RcIAgGFyyrGfpumQEjpdh5hZQ4Q6215KlAjHyWmS5fVNesCIlR%252FUTA%252F60d64%252FOz%252F%252FTAZq1CmRzUmkRqcbY8kdX3OcX%252FVibP24fNcfv0fpFpZ%252F9jo%252Fd8wwSkWDkj5EEdSywaOqeknsLrYhx%252FoenQArl%252BiLmk1hqMvLv3NYuOPijyJV4QmlFvPsVKfaE4g%252B%252BR0FZrwQrS6hwcb5VlliZBGUxvoXbjD7PcFDa6%252BfLe7p8bDt5UJFjlj11TthWn90lOvfjjs0MczA4wyYb%252FzGjGPxZrhKH8oRt0jXVKAQU8ee1u%252BXx1JeRFbNTYTEP%7Campid%3APL_CLK%7Cclp%3A2047675&epid=584705005]
*'''16 hp - $350 - Poulan''' - [https://www.ebay.com/i/264276331029?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=264276331029&targetid=935431406293&device=c&mktype=pla&googleloc=9023315&poi=&campaignid=10454521601&mkgroupid=104612011660&rlsatarget=pla-935431406293&abcId=2146002&merchantid=101723803&gclid=CjwKCAjwiaX8BRBZEiwAQQxGx9r4Y-vyQnNyLjRltvMhrrzHpTKhKKBBNDEfRq-c8V7h6kQwfRsCShoCjSwQAvD_BwE]. No gas pump, gravity feed gas. But, doesn't come with muffler. {{check}} Has 15A charging. Muffler - [https://www.ebay.com/itm/175165248847?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D240677%26meid%3D2b51c87e17db41738024f15042da8d56%26pid%3D101195%26rk%3D1%26rkt%3D12%26sd%3D222836122238%26itm%3D175165248847%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv9PairwiseWebMskuAspectsV202110NoVariantSeedKnnRecallV1BERT%26brand%3DStens&_trksid=p2047675.c101195.m1851&amdata=cksum%3A1751652488472b51c87e17db41738024f15042da8d56%7Cenc%3AAQAHAAABQEro4ql1SUJ1li87bKftud%252BHNR6f%252BZqZvMWaqvYIq1S%252FWkIBqj9FQDQRu6mAcNzuioXWUR932%252F68tDooavd6O6Q4JdsmO1z0012m9wfVebmJhTuY76RcIAgGFyyrGfpumQEjpdh5hZQ4Q6215KlAjHyWmS5fVNesCIlR%252FUTA%252F60d64%252FOz%252F%252FTAZq1CmRzUmkRqcbY8kdX3OcX%252FVibP24fNcfv0fpFpZ%252F9jo%252Fd8wwSkWDkj5EEdSywaOqeknsLrYhx%252FoenQArl%252BiLmk1hqMvLv3NYuOPijyJV4QmlFvPsVKfaE4g%252B%252BR0FZrwQrS6hwcb5VlliZBGUxvoXbjD7PcFDa6%252BfLe7p8bDt5UJFjlj11TthWn90lOvfjjs0MczA4wyYb%252FzGjGPxZrhKH8oRt0jXVKAQU8ee1u%252BXx1JeRFbNTYTEP%7Campid%3APL_CLK%7Cclp%3A2047675&epid=584705005]
*16hp - $330 - Duromax, $20.6/hp - [https://www.amazon.com/DuroMax-XP16HPE-Electric-Recoil-Engine/dp/B0040ZWU18?ref_=ast_sto_dp]
*{{check}}{{check}}16hp - $370 - Duromax, $23/hp - [https://www.ebay.com/itm/401764966136?epid=22031750669&hash=item5d8b0edef8:g:MCYAAOSwLgFj3ga8&amdata=enc%3AAQAIAAAA4Nz%2FD3Z%2FXr1IWqWYu9JB1tGUb0fB1P6%2BtNrXDbfvuwo%2ButEIREzeTsRHqRlQTPje9N6c8RvHV6lQntKPc5hSf%2B9VtISIcYQUmShgutLjDGUF%2BQnkJXLRxsiyyqZfZ1Bo%2BfgvXlO2ViAm34GTRREK33tIi%2B9jLzcIJsUAhHUbFhJvzspCN05WslKCKpfBGCpec%2FvMZ2TA5Aa0OWed%2Bm4za0n%2BP77Ooj8EbdfS0OcAmy3b4efc3IWkN%2BhmGaLUbrUVkT32g6JxwiUnlcM00zqlbnyPtES5ZPsdfSrrwXOvOITz%7Ctkp%3ABFBMuMO13v1i]
*7 hp - $159 - $22/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]
*7 hp - $159 - $22/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 {{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]
*'''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==
=420 cc=
*$300 [https://www.amazon.com/Engine-Stroke-Gasoline-Recoil-Splitter/dp/B07SS34FL6?source=ps-sl-shoppingads-lpcontext&ref_=fplfs&psc=1&smid=A1K701V6WP5WUK]
*$283 [https://www.walmart.com/ip/Gas-Engine-420CC-15-HP-4-Stroke-Gasoline-Motor-Engine-Recoil-Start-Go-Kart-Log-Splitter-Lifan-Type-Engine-OHV-Pull-Start-Garden-Tool-Gas-Motor/2472065482?wmlspartner=wlpa&selectedSellerId=101089463&adid=222222222282472065482_101089463_14069003552_202077872&wl0=&wl1=g&wl2=m&wl3=42423897272&wl4=pla-295289030566&wl5=9023282&wl6=&wl7=&wl8=&wl9=pla&wl10=484571015&wl11=online&wl12=2472065482_101089463&veh=sem&gad_source=1&gclid=CjwKCAiAqNSsBhAvEiwAn_tmxYkq9CuVjXhmOfrCIh62z250nQr79lEgVZD-W7WoiqUnZX-tt7Cr_hoC3FUQAvD_BwE]
*$260 [https://www.amazon.com/DONSU-4-Stroke-Cylinder-Keyed-Straight-Gasoline/dp/B07ZF55ZXY/ref=asc_df_B07ZF55ZXY/?tag=hyprod-20&linkCode=df0&hvadid=385169503131&hvpos=&hvnetw=g&hvrand=11692132176509796224&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9023345&hvtargid=pla-837532324975&psc=1&mcid=eade5014d1d1381eb9fc9d25c3d1869b&tag=&ref=&adgrpid=78287725613&hvpone=&hvptwo=&hvadid=385169503131&hvpos=&hvnetw=g&hvrand=11692132176509796224&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9023345&hvtargid=pla-837532324975&gclid=Cj0KCQiAhomtBhDgARIsABcaYym1hCjCxZJJ6gxQLB7Ey8y4rnRwqnHiL7XOmyv8ZXzDBvPt02ZEUN0aAkeiEALw_wcB#customerReviews]
=35 hp=
*$750 a pop from China [https://www.alibaba.com/product-detail/Top-Quality-OHV-Twin-V-Cylinder_1601201778490.html?spm=a2700.details.popular_products.7.71ea5e70Oqm8dI]
=Diesel=
*30 hp Kubota $5000 - $166/hp [https://www.ebay.com/i/333616486882?chn=ps]
*30 hp Kubota $5000 - $166/hp [https://www.ebay.com/i/333616486882?chn=ps]
*33 hp Kubota - $6500 [http://vi.raptor.ebaydesc.com/ws/eBayISAPI.dll?ViewItemDescV4&item=303553207698&category=46098&pm=1&ds=0&t=1602096897000&ver=0]
*33 hp Kubota - $6500 [http://vi.raptor.ebaydesc.com/ws/eBayISAPI.dll?ViewItemDescV4&item=303553207698&category=46098&pm=1&ds=0&t=1602096897000&ver=0]
Line 42: Line 57:
*300 hp [https://www.skoolielivin.com/caterpillar-cat-3116-3126-diesel-engine/] $7500 [https://usengineproduction.com/products/3126-CATERPILLAR-CAT-3126-3V-CKM-8YL-7AS-9SZ-BKD-DIESEL-LONG-BLOCK-ENGINE-/238#linktohere]
*300 hp [https://www.skoolielivin.com/caterpillar-cat-3116-3126-diesel-engine/] $7500 [https://usengineproduction.com/products/3126-CATERPILLAR-CAT-3126-3V-CKM-8YL-7AS-9SZ-BKD-DIESEL-LONG-BLOCK-ENGINE-/238#linktohere]


==Considerations==
=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.
*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.  
*For the large diesel engine, parts are expensive.  

Latest revision as of 05:22, 3 June 2025

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
  • 1 hp for $25 for simple small engines.
  • 1000 hp are $25k for the largest tractor in the world.

50 cc 2 stroke

  • Only 1.3 hp? $50 about. [2]

Large

  • JD 9 series engine, 14.l, 450 hp - around $30k [3]

50 cc with Electric Start

3hp

6.5 hp

  • For the $/hp ratio, the 212 cc range appears slightly better than the 16 hp range. 420 cc for 2 - cheaper than any 440 cc.
  • Check.pngPredator HF $150 212 cc - [6]. Performance review is solid [7]
  • Check.pngGX160 clone Walmart $134 [8]. Elect. start $70 more [9]
  • Check.pngWalmart $144 7.5 hp 212 cc Electric Start [10]
  • With electric start - 212 cc - $170 [11]
  • Honda GX160 clone - $160 - 6.5 hp [12]

20 hp Range

Selection

OSE's 2020 choice for an engine is the Poulan 19 hp x4 for 74 hp - [13]

Gas

Note: at $15-20/hp - if the engine is considered 'disposable', it is actaully a good choice. Old copies can be used for parts, as long as the same engine is used. If there are different engines with different parts, maintenance is onerous.

  • Check.pngCheck.png$225 for 15 hp. Aliexpress US ship - $15/hp. [14]. Down to $166 for the same - [15]

The threshold for relatively inexpensive engines is 19 hp.

  • 27 hp - $980 - $36/hp - [16]. And needs muffler.
  • 24 hp - $870 - $36/hp [17]
  • 22 hp - Briggs - $29/hp - [18]
  • 20 hp - Kohler $700 - $35/hp + muffler - [19]
  • 16 hp - $350 - Poulan - [20]. No gas pump, gravity feed gas. But, doesn't come with muffler. Check.png Has 15A charging. Muffler - [21]
  • Check.pngCheck.png16hp - $370 - Duromax, $23/hp - [22]
  • 7 hp - $159 - $22/hp - but no electric start - [23]
  • 18hp Duromax $18/hp - has muffler, but not charging Cross.png- such as for a fan - [24]

420 cc

35 hp

  • $750 a pop from China [28]

Diesel

  • 30 hp Kubota $5000 - $166/hp [29]
  • 33 hp Kubota - $6500 [30]
  • 65 HP - $6300 - $100/hp [31]
  • 200 hp - $55/HP - $11k - Cummins - [32]
  • 360 HP Mack used - $10/HP - $3600
  • 300 hp [33] $7500 [34]

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

  1. 500 &U 1000 hour lifetime for small engines - [35]
  2. 2000-4000 year life of car engines [36] - 150k miles
  3. Tractor engines - 5-10k hours [37]
  4. Pellet-fired stirling engine buggy - see PDF file
  5. Several links to various engine types including Sterling, Wankel, Steam, etc. [38].

Types

Rotary

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