Electric Motors: Difference between revisions
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=Using Existing Drills= | =Using Existing Drills= | ||
*Corded drills may be used as a power source. | *Corded drills may be used as a power source. | ||
*Cheap option, for good torque - 600W. $30 off the shelf. [https://www.harborfreight.com/12-in-heavy-duty-variable-speed-reversible-drill-69452.html?cid=paid_google|||69452&utm_source=google&utm_medium=cpc&utm_campaign=&utm_content=&gclid=EAIaIQobChMI-Kusj7bA6AIVA4NaBR04fQJ8EAQYASABEgL88fD_BwE] | |||
*$15 for 3/8" drill - 300W - [https://www.harborfreight.com/38-in-Variable-Speed-Reversible-Drill-60614.html?ccdenc=eyJjb2RlIjoiNjkxOTkwMTMiLCJza3UiOiI2MDYxNCIsImlzIjoiMTQuMzkiLCJwcm9kdWN0X2lk%0D%0AIjoiOTE1MiJ9%0D%0A&cid=paid_google|||60614&utm_source=google&utm_medium=cpc&utm_campaign=&utm_content=&gclid=EAIaIQobChMItaKdwrbA6AIVCj0MCh3qUAM4EAQYASABEgIoLPD_BwE] | |||
*Best option for powering a shredder- use common drills. | |||
=Treadmill Motor= | |||
*The best option for the money in terms of power for any electric motor, $50 for 3 hp. [https://www.surpluscenter.com/Electrical/DC-Motors/Special-Purpose-DC-Motors/3-HP-Icon-Health-And-Fitness-Treadmill-Motor-M-184002-10-3033.axd] | |||
=NEMA Motor Sizes= | =NEMA Motor Sizes= | ||
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*[[Electric Motor Sourcing]] merge with? Yeah we should. tons of duplicate pages | *[[Electric Motor Sourcing]] merge with? Yeah we should. tons of duplicate pages | ||
*[[Open Source Motor/Engine Construction Set]] | *[[Open Source Motor/Engine Construction Set]] | ||
Latest revision as of 02:24, 24 December 2020
Small DC Frame Sizes
- $6 for 24V, 1000RPM - 15W - [1]
No Gearbox
- 550, 775, 895 - etc frame sizes - [2]
- Ex. 775 motor - 150W - [3]
- Ex 895 motor - 360W - $17 - 12000 RPM - [4]. Good power but fast.
- 150W for $12 - [5]
Geared
- 14W - $6 - 1000 RPM - or slow, down to 22 kg-cm [6]. Cheap but too low power.
Using Existing Drills
- Corded drills may be used as a power source.
- Cheap option, for good torque - 600W. $30 off the shelf. [7]
- $15 for 3/8" drill - 300W - [8]
- Best option for powering a shredder- use common drills.
Treadmill Motor
- The best option for the money in terms of power for any electric motor, $50 for 3 hp. [9]
NEMA Motor Sizes
Basic
- This page explores sourcing for various electric motors
- Summary: 4 hp treadmill motors (high voltage DC) are the cheapest replicable source of motors per horsepower - at $20 per horsepower. Next is 5 hp compressor motors for $180, or $60/kW. Interesting, the surplus treadmill motors are a win. Since they are 130VDC, you could rectify regular wall power or use batteries
BLDC Hub Motors
220 AC
Best price per kW for motors - $70/kW
Weird
- 3hp AC - $30 - [14]
See Also
- Electric Motor Sourcing merge with? Yeah we should. tons of duplicate pages
- Open Source Motor/Engine Construction Set