Motor for Spit Roast Project - Up to 65kg Load & 4-6 RPM

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SUMMARY

The discussion centers on selecting an appropriate motor for a spit roast project capable of handling a load of up to 65kg and operating at 4-6 RPM. A gearmotor is recommended for achieving the desired speed and torque, with suggestions to consider electric screwdriver motors for their superior gearing. Alternatively, using an automobile windshield wiper motor combined with a bicycle chain reduction is proposed as a cost-effective solution, powered by a 6 amp battery charger.

PREREQUISITES
  • Understanding of gearmotors and their specifications
  • Familiarity with electric screwdriver motors and their applications
  • Knowledge of automotive components, specifically windshield wiper motors
  • Basic skills in mechanical assembly and tool usage
NEXT STEPS
  • Research gearmotor specifications and torque ratings
  • Explore electric screwdriver motor options and their gearing mechanisms
  • Investigate the use of automobile windshield wiper motors for DIY projects
  • Learn about bicycle chain reduction systems and their implementation
USEFUL FOR

This discussion is beneficial for DIY enthusiasts, mechanical engineers, and anyone involved in custom cooking equipment design, particularly those interested in spit roast mechanisms.

aramos
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Hi, I was wondering if you can spare me your expertise.

What kind of motor can I use for a spit roast project?

upto 65kg load and about 4-6 rpm.

Thanking you in advance.
 
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Welcome to PF, Aramos.
I'm not familiar with spits. I have a couple of propane BBQ's, but neither has a rotisserie attachment, and definitely neither has the capacity that you specify.
Almost all 115 VAC motors run at 1,750 rpms, so it is simply a matter of gearing to get the speed that you want. They vary in torque ability, though, so you would want something more like from an electric drill than from a blow drier. Come to think of it, an electric screwdriver has even better gearing than a drill. You're looking at double or even triple sets of planetary reduction units. You could rip the lips off of a rhinoceros with one of those things.
 
A gearmotor is what youre after.
On the cheap - if you're okay with using hand tools to make it, an automobile windshield wiper motor and bicycle chain reduction might work. A 6 amp battery charger will power it.
 

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