Jimbob Report post Posted January 24, 2011 Hello ya all I finally have maried my Singer 211-155 to a sewing table And connected the machine head via new v-belt to my new dc servo motor from Bob Kovar.......nice!!!! All is wel and the macine turns and walks well. now my two quesions: is it normal for the small hand wheel to be turned!? I have to give it all I have with my right hand to turn the hand wheel...?! And how much tension would there be on the belt when u press it together wih two fingers???? Like I zaid, it turns fine by motor but takes great effort to turn by hand....is this normal? Thanks for all info and hints up front... Jimbob Quote Share this post Link to post Share on other sites
Wizcrafts Report post Posted January 24, 2011 Apply a tiny bit of toe motion to the floor pedal to release the internal brake. This will allow the motor and machine to turn freely. I set the belt tension quite high on my setup. I have very little deflection of the belt. I know that this places an increased load on the motor's shaft bearings, but they are strong. A tight belt allows the motor to penetrate very dense leather. If you are not sewing through dense leather, move the motor mount upwards to give more slack. You don't want so much slack that the motor spins and the machine doesn't. Make sure you tighten down the set screws in the hand wheel! A tight motor belt applies a lot of torque to the machine and a tight machine penetrating dense leather could cause loose hand wheel screws to let go (I know this from experience - the screws flew out of the wheel and into the wall behind the machine!). If the set screws come loose, the flywheel will spin but won't drive the machine into dense leather anymore. This could damage the output shaft and the flywheel. Quote Share this post Link to post Share on other sites
Jimbob Report post Posted January 24, 2011 Apply a tiny bit of toe motion to the floor pedal to release the internal brake. This will allow the motor and machine to turn freely. I set the belt tension quite high on my setup. I have very little deflection of the belt. I know that this places an increased load on the motor's shaft bearings, but they are strong. A tight belt allows the motor to penetrate very dense leather. If you are not sewing through dense leather, move the motor mount upwards to give more slack. You don't want so much slack that the motor spins and the machine doesn't. Make sure you tighten down the set screws in the hand wheel! A tight motor belt applies a lot of torque to the machine and a tight machine penetrating dense leather could cause loose hand wheel screws to let go (I know this from experience - the screws flew out of the wheel and into the wall behind the machine!). If the set screws come loose, the flywheel will spin but won't drive the machine into dense leather anymore. This could damage the output shaft and the flywheel. yes and one day I learn how to spell on my smart fone...haha... Thanks so much, that was also a concern.....bearings on shaft and to much load here with tight belt.....so for now I have it medium tight, about 1 1/4 stretch allowed when pressured in center of belt. Good advice on hand wheel srews.....need to locate them and see......Bob Kovar send me a Hand lifter level...to raise foot by hand....went in like nothing, no problem...all is fixed. Thanks again!! Quote Share this post Link to post Share on other sites
Wizcrafts Report post Posted January 24, 2011 Thanks so much, that was also a concern.....bearings on shaft and to much load here with tight belt.....so for now I have it medium tight, about 1 1/4 stretch allowed when pressured in center of belt.... Thanks again!! I have never had a v-belt with much more than a 1/2 inch to 3/4 inch deflection. With 1.25" you will probably have a lot of slippage under heavy loads. Tighten up that belt Trainee! Quote Share this post Link to post Share on other sites
Jimbob Report post Posted January 24, 2011 I have never had a v-belt with much more than a 1/2 inch to 3/4 inch deflection. With 1.25" you will probably have a lot of slippage under heavy loads. Tighten up that belt Trainee! Wiz Guess I am just a wuss, haha....just dont want to break things....love that old Singer, looks like a tank and hopefully will work like one too. Dont have reverse, but that dont really matter for me right now!! Stitch addustment was a bit fussy but now, when the knob on the floor plate engages ALL the way in I can get some pretty good stitches from fine to very surprisingly large stitches for that kind of machine!! Will be doing some wallets (King style) and chaps, flat work for handbags and some light motorcycle gear. I am sure that machine can handle that. 138 should be the biggest thread I am using here, at least for now! Again, thanks for being around when we all need u and ur advise!! Greetings Da " trainee " hahaha.... Jimbob Quote Share this post Link to post Share on other sites
