iquiltit Posted February 15, 2018 Report Share Posted February 15, 2018 Do you have to put another gear behind the bobbin assembly in order to change the L to an M Link to comment Share on other sites More sharing options...
RunningThreads Posted February 15, 2018 Report Share Posted February 15, 2018 I’ve talked to Jim about this a couple of times and all he did was install the hook and he had to fabricate a retaining finger. I think the original thought was there was not enough room for the M without moving the shaft down a little. That would have required gearbox work but it appears that is not necessary. He definitely made no changes to the gearbox. Nigel Link to comment Share on other sites More sharing options...
jimerickson Posted February 15, 2018 Report Share Posted February 15, 2018 I have an Ult 2 and don't know whether the gear box on it is the same as the other models. Besides just slipping the new M hook on, I had to thin the hook shaft stop collar enough to provide room to time it (the M hook was a bit thicker than the L it replaced), and re-position the bobbin basket retaining finger. I moved the finger by filing the slot in it's mounting bracket enough deeper to move it up and into proper position for the M hook. I see that APQS now has an M hook finger, so all you'd need to do is buy it and replace the original. With the M hook in proper position the only other thing I had to do was raise the needle bar to account for the larger hook diameter. I used an M hook for a Gammill (the hook used on the Consew walking foot machine). I don't know what M hook APQS uses. It could be that if they use a different one, it might be better suited for the change. I can't say. Jim Link to comment Share on other sites More sharing options...
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