|Neil Wyatt||10/01/2019 17:03:15|
15951 forum posts
I've just had a telephone query about how to reverse a sewing machine motor.
The issue is that the Ricca motor (YM260A-9) originally used by GHT for his pillar tool is no longer available, but plenty of people have had success using sewing machine motors with variable speed foot switches.
The down side is that these require a crossed belt for a neat installation.
The question I was asked is, are these motors easily reversible and if so, how, which would allow the use of a toothed or poly-v belt?
I am sure a source for the original motor would also be of interest.
<edit> it seems the original motor 'number' is actually for a 1960s Singer sewing machine.
Edited By Neil Wyatt on 10/01/2019 17:04:21
|Joseph Noci 1||10/01/2019 17:17:14|
|476 forum posts|
Yes, reverse either the connections to the rotor ( brushes) OR the end connections to the field coil, as per any universal motor.
|Keith Long||10/01/2019 17:40:39|
|780 forum posts|
Most likely NOT reversible from experience. The motor that I bought in the last 3 years or so has offset brushes so is optimised for single direction operation. Also to get at the connections for the brushes or the coil would have needed some serious surgery to moulded plastic parts. The motors are sold as unidirectional but you can get either clockwise or anti clockwise versions. I sourced my motor from a sewing machine and spares supplier via EBay and bought the uprated (100 watt) version rather than the normal 60/70 watt type.
|Howard Lewis||11/01/2019 12:42:50|
|1924 forum posts|
If anyone wants a sewing machine motor, with speed control pedal, PM me for how to come and collect from East Anglia.
Please login to post a reply.
Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!
You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.
Click THIS LINK for full contact details.
For subscription issues please see THIS LINK.