I am probably just going to leave well enough alone.

Honestly, it works great as is. I just figured for an extra $30 i could reduce the speed to an average speed some of the more $$$ tumblers use. The persistent side of me doesn’t want to give up though, lol.

Boy did that spatchcock chicken turn out juicy and tender. I injected with sodium phosphate, and did a 5% salt brine in the tank. 25inHg for 30 min. Amazing.

I thought of it, but the circuit board takes the 220v then splits the 220v to a series of relays then to the motor, and the 220v also goes to what i believe is a ac to dc transformer that goes to anoher circuit board that controls the timer, and the forward and reverse functions just to name a few. My cheapest solution was to just get a higher ratio gear head. I am just going to ship this gear head back and go through some place like Aliexpress and try and find the correct chinese knock off. I’ll get it cheap but it will take up to 60 days to get here.

I believe i mentioned i tried a dimmer switch. That is what a dimmer switch does, but i dont know how many times per second the lowest setting on a dimmer turns off/on.

I suppose i could write a arduino sketch to cut a dc relay to toggle a 220v ac momentary switch to any length of time to find the sweet spot (if there is one).

mikemikemike

I have the same issue, but with a pulley grinder I built from a 1400RPM Agricultural AC fan motor. My current setup has the grinder spinning north of 400Rpm. I have decided like you that changing the gear/pully ratio is the best option, but honestly the last time I ran it I got through 10lbs of pork Butt in less than 3 minutes and couldn’t identify any issues with the blade or plate.

One thing that you might be able to do is put an intermittent “timer” in line to the AC voltage. The revolutions per minute are probably more important than the speed it turns over so if you could turn voltage on every 3 seconds for 1 second you could cut your RPMs down that way.

Either way let us know how it works out.

When my SCR didn’t work i tried using a dimmer switch which would intermittently cut the voltage but it had no effect on slowing it down.

The only solution was changing the gear head reduction ratio.

mikemikemike Are you some sort of mechanic?! Way to be resourceful and take on a project!

I like to consider myself a self proclaimed exceptional jack of all trades, lol

I have the same issue, but with a pulley grinder I built from a 1400RPM Agricultural AC fan motor. My current setup has the grinder spinning north of 400Rpm. I have decided like you that changing the gear/pully ratio is the best option, but honestly the last time I ran it I got through 10lbs of pork Butt in less than 3 minutes and couldn’t identify any issues with the blade or plate.

One thing that you might be able to do is put an intermittent “timer” in line to the AC voltage. The revolutions per minute are probably more important than the speed it turns over so if you could turn voltage on every 3 seconds for 1 second you could cut your RPMs down that way.

Either way let us know how it works out.

Well couldn’t get SCR to reduce speed. Turns out i need a single phase variable frequency drive which is not easy to find, nor cost effective. Instead i opted to replace the gear head from a 50:1 ratio to a 120:1 ratio. Which puts me at around 12 rpms instead of the 28 rpms the tumbler is at now. Price wasn’t too bad, found one new in the US for $30 should be here next week.