Hi if you look at pic showing back of wheel and belt to motor looks to me running out of line like bearing/housing worn/bent etc
It seems you may be referring to my machine.
Aye, you have spotted the Achilles heel in regards to design on pretty much every welded saw out there.
I can only guess a flange or face mounted motor is smoother, that is...
if this seemingly ubiquitous methodology of construction regarding mac
hine frames
doesn't decide to take a warp whilst being welded.
Perhaps it's just too costly to make a foot mounted motor ?
If I was buying a new machine, I would look closely at the base for twist, stand back and look at the simple things, guidepost parallel,
and how parallel the machine is plonked onto the base in the first place.
Does it rock to and froe with a single finger.
Whether I'm correct about warpage, or be it other negligent reasons for the base to be deformed on this saw by previous owner
(The new machine before it, which I returned, came in a boxed pallet (undamaged) and was similar affair, hence my reasoning behind this.
Now it sits level, and it doesn't rock about so much
If I didn't have a sound adjustable base to put it on, I might have started with a hammer,
but was too lazy to dismantle everything.
I've also made up some screws for threading on each corner.
Sorry bit sidetracked there,
Getting to why this might be a clue whether one might have chanced upon a lemon...
No guarantee that panel which the flange mount motor is bolted to is accurate
in relation to the top wheel, (as that's the one which is not adjustable)
No problem you might say...
You could simply shim the motor by taking a grinder to the ring you make
The only problem with that is, the pulley is already very far out on the shaft,
so the motor cannot be shimmed further.
Possible solutions to this maybe changing the belt for a longer one,
I haven't tried yet.
And if not possible, cut & weld a plate in place which will be in-line with the top wheel
Checked with the pencil taped onto the beam, to mark the floor,
whilst using a shorter one for the motor pulley aswell.
That should make things a bit more solid.
So good idea I suppose, is to spot how far the pulley is onto the shaft,
Noting on the newer machines, that panel is indeed a bit closer to the wheel.
Seems the right thing to do, if my longer belt don't work,
AND if that doesn't fix it like a Rolls Royce, then I'm buying a DTI.
and looking into balancing the wheels with a decent jig.
You might not even be on about my machine, but thought I'd share some potential issues anyway.
All the best
Tom