Members busted Posted July 23, 2012 Members Report Posted July 23, 2012 I took the original pulley off because it did not work out to the speed I wanted. The 1 3/4" pulley will produce around 300 to 350 spm if you use bot of these on the large pulley and the motor. There are no bushings or anything the pulley bore is 3/4" the same as the bolt OD. You don't have to modify the machine to install this speed reducer. Just install the speed reducer and change the belts. The motor belt goes to the large pulley the small pulley goes to the machine hand pulley. Gavin, I'm using the machine for 7 oz total max with 138 thread max so it should live a long time based on what others have been able to get away with on it. Gald you got your machine lined out to a speed to work for you. I as well tried to purchase a servo motor to save the time but ended up having nothing but grief, and I bought a popular model discussed here on the forum. It has forced me to come up with something better anyway so I guess other than getting behind and time lost it will have an end result of a better operating machine overall. Busted, Yes my motor is 1750 RPM. Do have some kind of bushings or bearings that the pulley assembly you made rides on the bolt with or just spins on the cast hub they came with? Why did you go back to the bigger pulley on the motor first? Trying to see how that would have helped. Maybe you just tried to hit a desired stitch speed you wanted? From everything I have found our machines did stitch 3500 per min which is roughly 58 per second . If you have it at 800 per min now that is roughly 75% reduction in speed . James, I like the idea of a bolt on wheel for the machine. I'm tryint to decide if I want to modify the machine side of things or just put a speed reducer on and leave the machine as is. I wonder if my machine has an aftermarket handle I can purchase? I think all this information is great guys and will help others slow machines they have/buy down the road. Quote
Contributing Member Ferg Posted July 23, 2012 Contributing Member Report Posted July 23, 2012 (edited) I modify most pieces of machinery I own, that is many. BUT, there are times when modification can turn into a nightmare, why don't you just bite the bullet, call Bob, get real reduction with no loss of torque with one of his servo motors? I forgot to mention, I like to sew slow on some things, very slow. Does that equal sewing by hand? Definitely not. Also like to speed it up,SERVO, ferg 1343066261[/url]' post='257530']I took the original pulley off because it did not work out to the speed I wanted. The 1 3/4" pulley will produce around 300 to 350 spm if you use bot of these on the large pulley and the motor. There are no bushings or anything the pulley bore is 3/4" the same as the bolt OD. You don't have to modify the machine to install this speed reducer. Just install the speed reducer and change the belts. The motor belt goes to the large pulley the small pulley goes to the machine hand pulley. Edited July 23, 2012 by 50 years leather Quote
Members Iron Pounder Posted July 23, 2012 Author Members Report Posted July 23, 2012 Busted, When I talked about a possible mod to the machine I was meaning putting a bigger pulley on the machine itself as some others have done here in the forum and not done the 2 pulley set up at all. Some have just put a 10-12" pulley on the machine and a 2" or less on the motor to do the same thing. It looks like I would have to put a very small idler pulley on the bobbin wind set up to keep it with a large pulley on the machine as the stock one wouldn't fit, at least not in the stock location. Ferg, If you read my other post about finding a good servo motor, and I think I mention it here on this post you will find I did try to go the servo motor route at first and that was a complete waste of time and money. I haven't said where I got this servo motor that came broke in three places right out of the box, that was in perfect condition as I see no good will come from it. I will just say this the money it cost means nothing. It was the time wasted and the very rude customer service that forced going down this road. It sounds like I just had bad luck but the turn off was how things got handled from there. Just glad it was a few bucks and not a machine purchase. Quote
Members Iron Pounder Posted July 25, 2012 Author Members Report Posted July 25, 2012 Jimbob Do they make an aftermarket wheel for this machine. does it have a larger pulley on it or just a bigger hand wheel? I can see where that would help operate by hand but wouldn't procide any advantage under power. Where would I look for one to fit mine? Quote
Contributing Member Ferg Posted July 25, 2012 Contributing Member Report Posted July 25, 2012 I am sorry you had a bad experience with the servo. I have a Consew rb5 and a Seiko cylinder arm, both have servo motors, one from Bob one from Consew. They both work perfectly. I have plenty of torque at every speed in almost everything I have tried to sew. That is why I suggested the servo. If you bought the servo from any of the dealers that frequent this forum I am sure they will almost stand on their heads to get you going correctly. If you bought the servo off e-bay, what can I say? ferg 1343071226[/url]' post='257538']Busted, When I talked about a possible mod to the machine I was meaning putting a bigger pulley on the machine itself as some others have done here in the forum and not done the 2 pulley set up at all. Some have just put a 10-12" pulley on the machine and a 2" or less on the motor to do the same thing. It looks like I would have to put a very small idler pulley on the bobbin wind set up to keep it with a large pulley on the machine as the stock one wouldn't fit, at least not in the stock location. Ferg, If you read my other post about finding a good servo motor, and I think I mention it here on this post you will find I did try to go the servo motor route at first and that was a complete waste of time and money. I haven't said where I got this servo motor that came broke in three places right out of the box, that was in perfect condition as I see no good will come from it. I will just say this the money it cost means nothing. It was the time wasted and the very rude customer service that forced going down this road. It sounds like I just had bad luck but the turn off was how things got handled from there. Just glad it was a few bucks and not a machine purchase. Quote
Members Iron Pounder Posted July 25, 2012 Author Members Report Posted July 25, 2012 I bought it from a man that runs ads here all the time. I haven't mentioned his name as he did refund my money but he wasn't interested in fixing the one he sent me. I don't want this to be about him or the servo, that is over. My hope is the info here can help others. Quote
Members QDaddy Posted July 27, 2012 Members Report Posted July 27, 2012 I bought one from Bob Kovar and couldn't be happier. Sorry you got hosed, but this is the best advice I can give to anyone wanting to tame a machine. Q Quote
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