Engines: Difference between revisions
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==Gas== | ==Gas== | ||
Note: at $ | 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] | *{{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] | ||
'''The threshold for relatively inexpensive engines is 19 hp.''' | '''The threshold for relatively inexpensive engines is 19 hp.''' | ||
Revision as of 17:35, 9 July 2024
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
- $209 -[4]
3hp
- $40 - [5]
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.
Predator HF $150 212 cc - [6]. Performance review is solid [7]- GX160 clone Walmart $134 [8]. Elect. start $70 more [9]
- Walmart $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.
- $225 for 15 hp. Aliexpress US ship - $15/hp. [14]
The threshold for relatively inexpensive engines is 19 hp.
- 27 hp - $980 - $36/hp - [15]. And needs muffler.
- 24 hp - $870 - $36/hp [16]
- 22 hp - Briggs - $29/hp - [17]
- 20 hp - Kohler $700 - $35/hp + muffler - [18]
- 16 hp - $350 - Poulan - [19]. No gas pump, gravity feed gas. But, doesn't come with muffler. Has 15A charging. Muffler - [20]
- 16hp - $370 - Duromax, $23/hp - [21]
- 7 hp - $159 - $22/hp - but no electric start - [22]
- 18hp Duromax $18/hp - has muffler, but not charging
- such as for a fan - [23]
420 cc
Diesel
- 30 hp Kubota $5000 - $166/hp [27]
- 33 hp Kubota - $6500 [28]
- 65 HP - $6300 - $100/hp [29]
- 200 hp - $55/HP - $11k - Cummins - [30]
- 360 HP Mack used - $10/HP - $3600
- 300 hp [31] $7500 [32]
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 - [33]
- 2000-4000 year life of car engines [34] - 150k miles
- Tractor engines - 5-10k hours [35]
- Pellet-fired stirling engine buggy - see PDF file
- Several links to various engine types including Sterling, Wankel, Steam, etc. [36].
Types
Rotary