Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.

Shoutbox

You must login to post a message.

allenb

04/19/2024 8:27 AM

eximwind

renatoa

04/18/2024 12:36 AM

bijurexim, greyberry2, N C,

renatoa

04/17/2024 9:27 AM

, branchu

renatoa

04/14/2024 5:56 AM

TheOtherJim and papajim,

allenb

04/11/2024 6:33 PM

Zemona

Shoutbox Archive

Forum Threads

Newest Threads

Rainfrog's Roastmast...
War on Farmers by Su...
Kaleido Roaster PID ...
Green coffee sellers
Wet beans - Estimati...

Hottest Threads

Skywalker roaster...	[292]
Skywalker, the AL...	[214]
Skywalker Roasts	[94]
Rainfrog's Roastm...	[54]
My first popcorn ...	[47]

In Memory Of Ginny

Donations

Latest Donations
dmccallum - 10.00
JackH - 25.00
snwcmpr - 10.00
Anonymous - 2.00
Anonymous - 5.00

Users Online

Guests Online: 4

Members Online: 0

Total Members: 8,212
Newest Member: eximwind

Oh no! Where's the JavaScript?
Your Web browser does not have JavaScript enabled or does not support JavaScript. Please enable JavaScript on your Web browser to properly view this Web site,
or upgrade to a Web browser that does support JavaScript; Firefox, Safari, Opera, Chrome or a version of Internet Explorer newer then version 6.

View Thread

Homeroasters - Home Roasting Coffee Community » BUILDING A ROASTER » Drum Roasters

Who is here? 1 guest(s)

Gearing a motor down
kwrcst	#1 Posted on 08/02/2019 9:44 AM
1/4 Pounder Posts: 75 Joined: November 26, 2018	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	#2 Posted on 08/02/2019 10:32 AM
Administrator Posts: 3005 Joined: September 30, 2016	If by "half the size" you mean half teeth count, then you are right.


allenb	#3 Posted on 08/02/2019 4:12 PM
Administrator Posts: 3859 Joined: February 23, 2010	Smaller gear (A) on motor, larger (B) on drum allenb attached the following image: 1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana


kwrcst	#4 Posted on 08/02/2019 4:29 PM
1/4 Pounder Posts: 75 Joined: November 26, 2018	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	#5 Posted on 08/03/2019 12:35 AM
Administrator Posts: 3005 Joined: September 30, 2016	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 08/03/2019 4:36 AM


allenb	#6 Posted on 08/03/2019 2:07 PM
Administrator Posts: 3859 Joined: February 23, 2010	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: 1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana


kwrcst	#7 Posted on 08/03/2019 3:03 PM
1/4 Pounder Posts: 75 Joined: November 26, 2018	If this fails, I will be looking at the belt system for aure

Jump to Forum:

Similar Threads

Thread	Forum	Replies	Last Post
Is vacuum cleaner motor ok for fb roaster?	Fluidbed Roaster	35	04/17/2023 11:22 PM
TC4+ with external DC motor driver	Dataloggers/Controllers/Rate of Rise Meters	21	01/05/2023 3:15 AM
Help! Blower motor control	Fluidbed Roaster	6	12/09/2022 11:42 AM
Motor noise reduction	Building a Coffee Roaster	7	05/27/2022 11:18 AM
Breadman motor wiring	Bread Machine Roasters	16	12/27/2020 1:17 AM