Suggestions for slowing down machine

[rockthecasbah121]

2 hours ago, DrmCa said:

Get a smaller pulley for the motor. Your servo probably came with the 3" pulley.

Just measured and it does have the 3" pulley on the motor. What's the smallest size you can go down to? Looks like the interior bore is 5/8 inch. Is there a site most people get their pulleys from? 

[BDAZ]

I found on my machine that by changing the resistors in the speed controller, I can dramatically lower the maximum speed and have no problem getting a stitch every couple of seconds. 

Bob

[bullmoosepaddles]

I bought a 40 mm (1.57") pulley for my Consew Rb1 from  eBay. It was like $12. I have the old style 3 to 1 reducer which I also bought used off eBay for $60. If I were to buy one today it would be the one on the right in the posted link. It bolts exactly where your motor does now, your existing motor bolts to the bottom of it. It allows you to tilt the machine as you always have for service and maintenance. While it is more expensive, in my opinion it is worth every dime.

 http://www.cowboysew.com/product911.htm This link shows all three of the normal types of reducer. I would suggest the box type. 

[DonInReno]

If you are somewhat handy I'd suggest putting together a reducer from off the shelf pulleys for the least cost solution:  10" pulley $17, 1-3/4" pulley $7, 5/8" keyed shafting $12, pillow block bearing $10, two new belts $10.

Otherwise a factory built reducer would be the next least cost.

Napa auto parts and other auto part stores stock 3L light duty belts - a 38" belt would simply be # 3L380 but an auto parts place will charge you $12 or so.  An eBay search will show 3L belts for as little as $2 ea.

 

[Gregg From Keystone Sewing]

     If you are using up to a V69 thread and happy with the performance of a Juki DDL-5550N, and you are trying to bang out these dog collars...a full function under underbed trimmer machine may be in order.

     A new Juki with auto presser foot lift under bed trimmer needle positioner automatic back tack and servo motor than can be programmed for certain repetitive functions with great control.   A machine like that cannot do anything more or less than your current machine, but has what would be called labor saving devices and in the case of dog collars can really do a lot to move you forward at really an economical price.  Many folks here on leather worker may explain that you need to go big as in speed reducers and such, but the correct machine is really what you are after.  And by the way never get rid of your Juki DDL-5550N.  It's the best back up machine you can get no matter what motor is on there.

Edited July 6, 2018 by Gregg From Keystone Sewing

[rockthecasbah121]

1 hour ago, bullmoosepaddles said:

I bought a 40 mm (1.57") pulley for my Consew Rb1 from  eBay. It was like $12. I have the old style 3 to 1 reducer which I also bought used off eBay for $60. If I were to buy one today it would be the one on the right in the posted link. It bolts exactly where your motor does now, your existing motor bolts to the bottom of it. It allows you to tilt the machine as you always have for service and maintenance. While it is more expensive, in my opinion it is worth every dime.

 http://www.cowboysew.com/product911.htm This link shows all three of the normal types of reducer. I would suggest the box type. 

Do you know how much it costs? It looks like you can’t buy it through the site but have to call them. 

35 minutes ago, Gregg From Keystone Sewing said:

     If you are using up to a V69 thread and happy with the performance of a Juki DDL-5550N, and you are trying to bang out these dog collars...a full function under underbed trimmer machine may be in order.

     A new Juki with auto presser foot lift under bed trimmer needle positioner automatic back tack and servo motor than can be programmed for certain repetitive functions with great control.   A machine like that cannot do anything more or less than your current machine, but has what would be called labor saving devices and in the case of dog collars can really do a lot to move you forward at really an economical price.  Many folks here on leather worker may explain that you need to go big as in speed reducers and such, but the correct machine is really what you are after.  And by the way never get rid of your Juki DDL-5550N.  It's the best back up machine you can get no matter what motor is on there.

We looked at some of the programmable machines- but my wife is OCD and was not OK with the stitch quality. She is used to her machine that has a one stitch button on it, hence the need to slow down our current machine. 

[bullmoosepaddles]

@rockthecasbah121Not sure what Cowboy gets for them. Several years ago they were sold on eBay by a small company who marketed their own product.   

Edited July 6, 2018 by bullmoosepaddles

[garypl]

 

3 minutes ago, bullmoosepaddles said:

@rockthecasbah121Not sure what Cowboy gets for them. Several years ago they were sold on eBay by a small company who marketed their own product.   

I saw a box type speed reducer sold on eBay for $210

[rockthecasbah121]

My machine has a family FESM 550s Servo motor in it. When I looked it up, the only thing I can find is that it has an amco shaft. Are all amco shafts 3/4 bore? It looks like this pulley will probably work on my machine if so and reduce the rpm by half:

https://www.amazon.com/Industrial-Sewing-Machine-Motor-Pulley/dp/B01CXNRK6S/ref=pd_aw_sim_201_1?_encoding=UTF8&psc=1&refRID=42421DT2Y031XF8H0A0M&th=1

[trash treasure]

Have you checked that shaft with a caliper?   It might be 20mm, not 3/4" .