Smouser
Member
- Messages
- 1,026
- Location
- Amesbury, Wiltshire, UK
This is the journey of my (new to me) Qualters & Smith QSH 6 power hacksaw.
But first, here is the brochure of the saw.
Link to the saw's manual which I have been kindly sent by members of the forum: https://drive.google.com/file/d/1lDAin0ShmOlXAer2_khTeoUiACSiU_k0/view?usp=sharing
These pictures are of the listing on FB.
I collected the saw in my pickup truck and the seller kindly loaded the saw with a forklift.
Unfortunately, I did not have the luxury of a forklift once I got home, so I called a few friends over to quickly lift the saw off the truck.
Major miscalculation! It is HEAVY. After a few trial lifts, we swallowed our pride and decided to strip the saw down slightly to avoid damage to either the saw, the truck or ourselves while attempting to lift it off.
Even with the saw 'split in half, it was still pretty heavy.
We got the saw on a little trolley and I washed it down a few days later.
Looking much better with most of the old grease/oil and grime washed off.
The original motor is a Hoover 0.66HP, 950RPM, 380/440V three-phase motor.
As I do not have three-phase power available I decided to run the saw with a VFD.
The problem was, the motor was only wired for STAR at 380v/440v and my inverter only outputs 220v.
I started a thread (https://www.mig-welding.co.uk/forum/threads/rewiring-a-3-phase-motor-to-delta.111309/) to ask for advice on how to rewire the motor to Delta so I could use my VFD and received excellent advice from fellow forum members.
I managed to find the STAR point on the motor where three wires were joined. I split the wires and ran cabling to the motor connection plate which meant the motor was now wired in DELTA.
With the motor now running, I greased and oiled all the working parts and done a few test cuts.
I was well impressed with the little saw, it is not fast by any means but it cuts nice and straight and is much less noisy than a grinder.
But first, here is the brochure of the saw.
Link to the saw's manual which I have been kindly sent by members of the forum: https://drive.google.com/file/d/1lDAin0ShmOlXAer2_khTeoUiACSiU_k0/view?usp=sharing
These pictures are of the listing on FB.
I collected the saw in my pickup truck and the seller kindly loaded the saw with a forklift.
Unfortunately, I did not have the luxury of a forklift once I got home, so I called a few friends over to quickly lift the saw off the truck.
Major miscalculation! It is HEAVY. After a few trial lifts, we swallowed our pride and decided to strip the saw down slightly to avoid damage to either the saw, the truck or ourselves while attempting to lift it off.
Even with the saw 'split in half, it was still pretty heavy.
We got the saw on a little trolley and I washed it down a few days later.
Looking much better with most of the old grease/oil and grime washed off.
The original motor is a Hoover 0.66HP, 950RPM, 380/440V three-phase motor.
As I do not have three-phase power available I decided to run the saw with a VFD.
The problem was, the motor was only wired for STAR at 380v/440v and my inverter only outputs 220v.
I started a thread (https://www.mig-welding.co.uk/forum/threads/rewiring-a-3-phase-motor-to-delta.111309/) to ask for advice on how to rewire the motor to Delta so I could use my VFD and received excellent advice from fellow forum members.
I managed to find the STAR point on the motor where three wires were joined. I split the wires and ran cabling to the motor connection plate which meant the motor was now wired in DELTA.
With the motor now running, I greased and oiled all the working parts and done a few test cuts.
I was well impressed with the little saw, it is not fast by any means but it cuts nice and straight and is much less noisy than a grinder.
When fitting a new belt I always struggle getting it to track in the middle of the rollers. Not sure if it’s because the machine I’ve used is worn or that’s just how they are?
what a coincidence 
