Questions re: DIY box style speed reducer - Leather Sewing …
May 11, 2023 · I would like to build a DIY "box style " speed reducer. I understand the concept pretty well, I am thinking of a 3:1 reduction using a 6: OD and 2" OD pulley. My first question is, if you use 2 fixed pillow block bearings to support the shaft, how do you allow for adjusting the belt tension between the reducer and the sewing machine?
Building a Speed Reducer - Leather Sewing Machines
Oct 13, 2020 · An advantage of the leather belt is that as it stretches I can just remove the staple and shorten the belt to a new length. I made my own staples. 16 Ga wire worked better than 14 Ga wire for the staples. There is play in the speed reducer shaft causing it to be noisy - but I can control the speed of the sewing now.
Box Type Speed Reducer - Leatherworker.net
Feb 19, 2019 · just bought a Juki 1541 and wanted a speed reducer, then came across this topic. In UK and previously cut my old Singer 58K45 table to fit a two pulley arrangement underneath. Works well but had to make up my own belts. This time I might try this gentleman’s big pulley to avoid cutting new table.
No-weld DIY speed reducer - Leather Sewing Machines
Nov 9, 2024 · First of all, thanks to everyone here who posted about their own DIY speed reducers, I studied all that I could find. A couple years back, I ran across a Singer 111W155 at a church sale, on a table complete with clutch motor. At the sale it looked oiled and cared for; the drawer under the table c...
Anyone Tried this Speed Reducer? - Leather Sewing Machines ...
Jan 14, 2017 · Anywho, even with the servo motor set to lowest setting 300rpm, and feathering the foot pedal, Its way to fast. If I feather it too much, there is not enough torque and then the machine jumps when it gets enough power and is hard to control. So i thought , hey, maybe a speed reducer will help with this.
Home Made Speed Reducer - Leather Sewing Machines
Jun 26, 2015 · If you rig your own reducer, try and set the position of the reducer's small pulley (that drives the belt to the handwheel) so that its center lies slightly back behind the pins of your machine's hinges. This will allow you to tilt the machine …
Speed Reducer And Servo Motor? - Page 2 - Leather Sewing …
Jan 21, 2013 · Before I go and fab up a jackshaft arrangement, I'm going to try a smaller drive pulley (2.25" dia instead of 3.15" which should get me a max speed of 2000 spm at the machine head) and mount a longer lever arm on the servo motor's throttle arm (and/or maybe weld a shorter lever linkage arm to the pedal plate) and see where that gets me.
Home Brew Speed Reducer - Leather Sewing Machines
Mar 8, 2023 · I have to increase the speed setting a little to get the machine to turn over. This also translates to a higher slowest speed. If I really need to sew slower, and steadily, at a rate below what the direct motor give me, I can add a speed reducer. Some are 2:1, others are 3:1. This hasn't addressed to part of the O.P's question about the ...
Speed Reducer mounted directly onto Servo Motor - Leather …
Aug 2, 2019 · This is not my idea - the pictures come from German sewing machine forum (I have permission to post them here). For sure it depends on the servo motor it self but it this is a rather smart idea I think wen you have (space) issues mounting the speed reducer under the table.
Speed Reducer Pulley In The Uk - Leather Sewing Machines ...
Sep 6, 2015 · A reducer on top of the new strong servo motors will be to much for that machine, it will simply be to strong. That's the setup we use on the heavy stitchers like the 441 and 205-370 machines. I installed a reducer and a 600 watt cobra servo on my Pfaff 345 H3, a similar machine to the 167 but with a cylinder bed (I had a reducer laying around).