Power supply help

[Davo242]

no gear box just a direct drive at the min for testing. its a 59 tooth sprocket on a mod1 rack. 4:1

[JAZZCNC]

no gear box just a direct drive at the min for testing. its a 59 tooth sprocket on a mod1 rack. 4:1

What you mean 4:1 if it's direct drive there's no ratio.? 59T direct drive means 185mm pitch.!!!

Anyway I strongly advise you to STOP and have re-think because your wasting your time on several fronts.
#1 No way can you move gantry that wide with one motor.
#2 Ratio of at least 5:1 will be needed with that size pinion.
#3 The drives are rubbish and even with 36V if they survive long enough they will run so badly and rough you'll struggle even with 2. This is because resonance will cripple them and turn them into horrible stalling nightmares. These cheap nasty drives have no way of dealing with resonance and with machine being all steel and not exactly HD the motors/drives will be affected.
#4 Looking at the Z axis unless your going to use for just Plasma then No way is that Z axis going to be upto cutting anything but foam. Certainly won't cut wood very well.

So again please don't take this wrong way I say it for your own sake and your wallets sake. You'll be wasting good money and time if you continue as you are.!

[Davo242]

what do u see wrong with the z axis jazz??

[Jonathan]

what do u see wrong with the z axis jazz??

Single bearings on the rails. Rails not on front plate so bearings are miles from the cutter. Spindle mounted at wrong end.

In fact simply taking the Z-axis front plate off with the bearings and turning it upside down would make a difference...

[Davo242]

I can see what your saying about the bearings but why the rails on the front plate and not the back.???I think the spindle will be ok there is still another bracket to go there yet the same as the top to hold it in place.

[JAZZCNC]

what do u see wrong with the z axis jazz??

Jonathan said everything that needed to be said so I won't repeat.

But I will say this.!!. . . The fact you have asked this question to me and query what jonathan points out plus the fact you have bought TB based drives and no clue about voltage shows me you haven't done much research so I suggest you start doing some.
We can tell you this and that, answer a query or two but you really need to read up on it and under stand why things are done like they are. Doing so will save you money and time in the long run.

[Davo242]

Ok you maybe right in what ur saying jazz but I started this project a while back and I'm only getting back to it now. Up until recent I didn't know this forum existed. But yes I have been looking threw posts on here to find info and guidance

[JAZZCNC]

Ok you maybe right in what ur saying jazz but I started this project a while back and I'm only getting back to it now. Up until recent I didn't know this forum existed. But yes I have been looking threw posts on here to find info and guidance

Dave don't get me wrong I'm not having a go at you and anyone around knows I'm 100% supportive but end of day your the one doing the work and if you don't research you will get it wrong.
The mistake you made and many others is by not asking before starting and with not enough research. It's recipe I see and deal with all the time so my advise is based on experience and with genuine intent to help not offend anyone.

While building a good CNC machine isn't exactly difficult it is very easy to build a lemon if you don't go about it in the right way.!!

[Davo242]

Your ok I do see where you are coming from and I'm grateful for all the advic that yourself and others give . As for the gantry I have another motor ordered for the other side so I prob will need some help on getting the wiring sorted for it. Also you have mentioned the drivers are no good, which ones do you recommend if theses ones blow.