Members johnnydb Posted October 28, 2021 Members Report Posted October 28, 2021 (edited) 10 hours ago, evilblackdog said: According to this post and the s/n on my motor I should be able to convert it to 220 single phase. Do you have any thoughts on that? To be honest though, if I can figure out how to remove all the Efka controls/automation stuff I'd just convert it to a manual servo driven machine. Yes...change out the drive motor to a single phase servo motor that is sized to produce the same sustainable torque as the current three phase motor. The HP equivalent won't be the same but it isn't that relevant as the torque. Edited October 28, 2021 by johnnydb Quote
Members evilblackdog Posted October 28, 2021 Author Members Report Posted October 28, 2021 23 hours ago, Hockeymender said: The reverse is removed because that is a computerized motor. It can be set for the number of backtack stitches both at the start and end of sewing. If reverse is needed, there is a dedicated button on the control panel for that. Every sewing function can be programmed with this setup. I had one and it is very nice, easy to get spoiled by. And yes, reverse is required for binding, to backtack the ends....do it everyday. I'm not going to lie, it all looks really daunting for someone who hasn't sewn anything since middle school and I'm leaning towards trying to revert it to a manual machine and going with a 110 volt servo motor. What are you thoughts? Quote
Members dikman Posted October 28, 2021 Members Report Posted October 28, 2021 It shouldn't be that difficult to completely remove the motor and all its associated fittings, you should be left with a basic 335 head unit. Then just fit a servo, again it shouldn't be that difficult as folks on here do it all the time. A 550w servo will work, a 750w would be better. A closeup photo of the needle/feet area would be nice, to see what feet/feed dog are fitted. Oh, and you might be able to sell the Efka, seeing that you have a working unit. Quote Machines wot I have - Singer 51W59; Singer 331K4; Seiko STH-8BLD; Pfaff 335; CB4500. Chinese shoe patcher; Singer 201K (old hand crank)
Members evilblackdog Posted October 28, 2021 Author Members Report Posted October 28, 2021 13 minutes ago, dikman said: It shouldn't be that difficult to completely remove the motor and all its associated fittings, you should be left with a basic 335 head unit. Then just fit a servo, again it shouldn't be that difficult as folks on here do it all the time. A 550w servo will work, a 750w would be better. A closeup photo of the needle/feet area would be nice, to see what feet/feed dog are fitted. Oh, and you might be able to sell the Efka, seeing that you have a working unit. The motor part doesn't scare me but they removed the manual reverse lever and the stitch length adjustment is differen too. There's at least 1 pneumatic cylinder and 1 electric solenoid that I don't even know what they do but are part of the "automation". Quote
Members evilblackdog Posted October 28, 2021 Author Members Report Posted October 28, 2021 For anyone who finds this thread looking for a manul, here is the thread that Uwe posted it on towards the bottom of the page. Also note that I've found the site search to be useless and have found google to be of much more use. e.g. site:leatherworker.net Pfaff 335 manual Quote
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