Moderator Wizcrafts Posted May 9, 2014 Moderator Report Posted May 9, 2014 Just measure your leather belt around the pulleys and replace it with a standard type 3L v-belt of the same length. Quote Posted IMHO, by Wiz My current crop of sewing machines: Cowboy CB4500, Singer 107w3, Singer 139w109, Singer 168G101, Singer 29k71, Singer 31-15, Singer 111w103, Singer 211G156, Adler 30-7 on power stand, Techsew 2700, Fortuna power skiver and a Pfaff 4 thread 2 needle serger.
Members Miss KamiKaze Posted May 10, 2014 Author Members Report Posted May 10, 2014 What are your thoughts on rubber vs leather belts? is there a difference? Thank You very much!!! Quote
Moderator Wizcrafts Posted May 10, 2014 Moderator Report Posted May 10, 2014 What are your thoughts on rubber vs leather belts? is there a difference? Thank You very much!!! Is your machine motor powered, or treadle powered? If motor, is it a big industrial motor under the table, or is it a tiny home style motor on the back of the machine? The reason I ask is because most treadle powered machines use looooooong leather belts, cut to size as they stretch out with age. Industrial motor powered sewing machines are normally equipped with rubber or composition v shaped type 3L belts. These belts don't slip as easily as leather does. They are tightened by lowering the motor via its adjusting nut and bolt. Quote Posted IMHO, by Wiz My current crop of sewing machines: Cowboy CB4500, Singer 107w3, Singer 139w109, Singer 168G101, Singer 29k71, Singer 31-15, Singer 111w103, Singer 211G156, Adler 30-7 on power stand, Techsew 2700, Fortuna power skiver and a Pfaff 4 thread 2 needle serger.
Moderator Wizcrafts Posted May 10, 2014 Moderator Report Posted May 10, 2014 If your 31-15 has an industrial motor, it doesn't matter what type of belt you use. The motor has an adjustable nut and bolt to raise or lower it. You can lower it for more belt tension until your leather belt stretches too much. Then, remove the belt and take out the C clamp from one of the ends. Cut that end about an inch shorter, punch a #0 hole about 5/16" in from the end and bend the C clamp into it. The leather should just touch when the clamp is in position. If you get a v-belt, make sure you get on that will fit tightly with the motor adjuster in the center of its travel. A stretched out 43 inch leather belt, already adjusted to the bottom of the motor adjusting bolt, would probably be replaced with a new 42" v-belt (type 3L only). Quote Posted IMHO, by Wiz My current crop of sewing machines: Cowboy CB4500, Singer 107w3, Singer 139w109, Singer 168G101, Singer 29k71, Singer 31-15, Singer 111w103, Singer 211G156, Adler 30-7 on power stand, Techsew 2700, Fortuna power skiver and a Pfaff 4 thread 2 needle serger.
Members Miss KamiKaze Posted May 12, 2014 Author Members Report Posted May 12, 2014 Thank you so very much If your 31-15 has an industrial motor, it doesn't matter what type of belt you use. The motor has an adjustable nut and bolt to raise or lower it. You can lower it for more belt tension until your leather belt stretches too much. Then, remove the belt and take out the C clamp from one of the ends. Cut that end about an inch shorter, punch a #0 hole about 5/16" in from the end and bend the C clamp into it. The leather should just touch when the clamp is in position. If you get a v-belt, make sure you get on that will fit tightly with the motor adjuster in the center of its travel. A stretched out 43 inch leather belt, already adjusted to the bottom of the motor adjusting bolt, would probably be replaced with a new 42" v-belt (type 3L only). Thank you very much for your on goin help!! I've measured 36" from pully to pully... So I'm goin to order a 35" ( i remember loosening the screw to make the pully drop a lil, afew times to make belt tighter. So, I feel the 35" is the right choice!! Praying that this fixes it for me!! =D Thanks again for your support!!! Quote
Moderator Wizcrafts Posted May 12, 2014 Moderator Report Posted May 12, 2014 Thank you so very much Thank you very much for your on goin help!! I've measured 36" from pully to pully... So I'm goin to order a 35" ( i remember loosening the screw to make the pully drop a lil, afew times to make belt tighter. So, I feel the 35" is the right choice!! Praying that this fixes it for me!! =D Thanks again for your support!!! Aw shucks Maam, it twern't nuthin'! Quote Posted IMHO, by Wiz My current crop of sewing machines: Cowboy CB4500, Singer 107w3, Singer 139w109, Singer 168G101, Singer 29k71, Singer 31-15, Singer 111w103, Singer 211G156, Adler 30-7 on power stand, Techsew 2700, Fortuna power skiver and a Pfaff 4 thread 2 needle serger.
Members VanDutch Posted May 12, 2014 Members Report Posted May 12, 2014 Thank you so very much Thank you very much for your on goin help!! I've measured 36" from pully to pully... So I'm goin to order a 35" ( i remember loosening the screw to make the pully drop a lil, afew times to make belt tighter. So, I feel the 35" is the right choice!! Praying that this fixes it for me!! =D Thanks again for your support!!! Try this link. http://www.durabelt.com/beltlengthcalculator.php Use method #3. Measure the diameter of your pulleys and the center distances and using the calculator you will have the exact length you need. Quote
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