topbanner.gif
Login
Username

Password




Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.
Shoutbox
You must login to post a message.

SaraJohnson
01/16/2020 11:50 PM
Looking for a good coffee shop in Maumee, Ohio. Any recommendations?

snwcmpr
01/10/2020 4:18 AM
Maybe post in the Behmor section. Behmor users can see it. The SHOUTBOX post will be hidden in a few days.

jqaman
01/09/2020 2:51 AM
The flap on the back of my Behmor 1600 has come loose at one end. Its 15 years old. I was wondering if anyone has any idea how to fix it? thanks...john

JackH
01/02/2020 8:33 PM
Jyoungs3, you should start a post about it. The shoutbox entries will scroll away in time.

Jyoungs3
01/01/2020 1:14 PM
I just got a Freshroast 540 and my first attempt s we’re way under roasted. Does anyone have a proven profile.Thanks.

Users Online
Guests Online: 4

Members Online: 0

Total Members: 6,358
Newest Member: Nvrwrkn
In Memory Of Ginny
Donations

Latest Donations
Anonymous - 5.00
Anonymous - 5.00
renatoa - 2.00
JitterzZ - 2.01
renatoa - 2.00

View Thread

Who is here? 1 guest(s)
 Print Thread
Gearing a motor down
kwrcst
May be an easy question but if I have a 120rpm Moyer and needed to adjust it down to 60rpm, would I just put a gear on the shaft and a gear half the size on the axel of the drum? Or is there more math involved?
 
renatoa
If by "half the size" you mean half teeth count, then you are right.
 
allenb
Smaller gear (A) on motor, larger (B) on drum
allenb attached the following image:
gears.png

1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
kwrcst
Thanks all. I was hoping it was that simple. I purchased a nice motor with a 68RPM speed off of ebay and then got a notice they couldnt find it. I had to go with a 166RPM so I plan to gear it down. I think I will do an 11 tooth to 28 tooth and it should slow me down to 65.35 RPM.
 
renatoa
May the gear be with you !

https://www.servo...nion-gears

My approach would be to use a belt, not direct drive, less wear, heat isolation, shock attenuation (if a hard bean or a small stone block the drum)... and probably other smaller benefits.
Edited by renatoa on 08/02/2019 10:36 PM
 
allenb
My choice of drive and used on my 1 lb drum roaster is the synchronous drive sprockets and belts components as seen here:

https://www.autom...sprockets)
allenb attached the following image:
belt_and_pulley.png

1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
kwrcst
If this fails, I will be looking at the belt system for aure
 
Jump to Forum:

Similar Threads

Thread Forum Replies Last Post
Cooling tray motor suggestions Drum Roasters 5 12/30/2019 4:53 AM
Upcycled Drum Motor? Drum Roasters 11 12/28/2019 7:37 PM
Burning out a motor on BM? Bread Machine Roasters 2 11/23/2019 1:43 AM
Simple, bigger, better, faster, SC/TO high torque motor replacement for ~$35 Turbo Oven Roasters 23 10/09/2019 3:50 PM
Info on DC motor power of poppers Popcorn Popper roasting 12 04/16/2019 4:20 PM
Homeroasters Association Logo, and all Content, Images, and Icons © 2005-2016 Homeroasters Association - Logos are the property of their respective owners.
Powered by PHP-Fusion Copyright © 2020 PHP-Fusion Inc
Released as free software without warranties under GNU Affero GPL v3
Designed with by NetriX