Hi Lucas, There is an almost encyclopaedic amount of information on the Boxford here:- There are three bench models (like yours) A, B and C. Evan /even-e-cent or better to use this for my Boxford lathe videos: You might find my videos of some interest. See my recent post about software for working out what gears to use. Do you have the selection of gear wheels you need for cutting threads. My lathe is very similar to yours but has a thread turning gearbox. And it was said that 3 phase motors are about $50 because many machines are imported with 3 phase and converted to single phase. I think they said they can be purchased quite cheaply from China. There have been previous threads on the topic of variable speed devices. You could still use the 4 pulleys that you have. That would simplify your motor setup and I think it would work. If you had one of those I wonder whether you could get away with a single pulley on the motor. These take single phase AC and convert to DC, then generate 3 phase AC with variable frequency and that is what is needed to vary the speed of an AC motor. Since you are buying a new motor look into the possibility of getting a three phase motor and a variable speed controller. They are made up of many separate links about 40mm long and can be taken apart and rejoined easily and the length is adjustable. Although they are expensive it would be worth getting a lingkbelt. It is a big job to take the head apart, and that is what you would have to do to fit a standard V-belt. You may have noticed there are other members from Australia and NZ too.
Hi Lucas and welcome from the deep south. The original fixed speed motor will work well but there are “modern” alternatives that are better and if you have to start from scratch are not much more expensive. that will give a very smooth variable speed drive with ~1kW of power and (depending on the motor ) up to 3000 rpm. There is also the option of sourcing a second hand treadmill motor of 1 - 2 hp DC and driving it with a 70$ Aus Chinese DC controller which provides 0 -200 volts dc and up to 6 amps. That gives me a variable speed drive which is a very desirable feature to have. On mine (model A) and physically very close to your lathe I removed the original single phase 1/2 hp motor and replaced it with a 3 phase 220/380 volt 1kW (A three phase motor is generally smaller than a single phase motor of the same rating) motor and mated it with a baby VSD. Motor options vary greatly depending on what you have handy And what your skill set is. Richard is correct on the motor sizing but I don’t see any electrical control equipment (switch boxes direction selection etc) so it looks like you will be starting from a clean slate.
Welcome Lucas, I’m also in Australia.Brisbane, if I can be of assistance.
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