Extruder Upgrade assemblies ??

[EagleSeven]

Yup, but it would rotate a different way and only if one were changed and one wasn't if both are changed then it will behave the same.

?????? Now I'm really Confused ????? LOL

I think some printers are wired to match the way his motors are made,
but our printer is wired for a different motor wiring design.
(Even though they are All Nema-17 motors)

And how to determine where to get the Design to match our printer's wiring, is the Big question now ???

[EagleSeven]

Well the sellers of this extruder kit, who are in the UK,
called : 'We Do 3D Printing',
have not been much help in resolving the problem with their stepper-motors.

Only said they think problem is with the connector wiring being different
and no more replies about helping with a solution, refund or replacements.

Needless to say I'm very Disappointed in this purchase !
I just hope they find the problem before selling these useless motors to anyone else.

[EagleSeven]

I got a message from Seller and he said that it's the center 2 wires that are reversed, inside stepper-motors,
( AXBAXB instead of AXABXB like ours )

He found that his motors will Not work in Many printer makes, CTC, Wanhao, FF, etc.
But will work in other makes, like the RepRap.

I think I'll take one apart and see if it can be changed internally.
Since they are Useless the way they are now, for our printer.

[Mjolinor]

That is really odd. Must be a faulty batch, it has to be. No one would make them like that deliberately.

[EagleSeven]

That is really odd. Must be a faulty batch, it has to be. No one would make them like that deliberately.

No, they are 2 different designs of motor internal connector wiring.
Not just a bad batch.
Why and How it happened would only be guess-work for me !

[Captin]

Stupid question time.

You did make sure you bought 24v and not 12v.

I have bought lots of stuff for my CTC 3dprinter from We Do 3D Printing with no problems at all. I haven't changed the stepper motors on my printer as the originals worked fine, but I did change the extruder to the ones like in your picture and it made a big improvement over the factory fitted ones.

[EagleSeven]

Well, the way I understand it is that stepper-motors are Not rated at a fixed voltage,
like 12 or 24 volts,
but are rated at a voltage Range, like 3 to 25v or 5 to 30v, etc.
and usually only the minimum voltage rating info is given , like 3 or 5 volts.
So they should operate on a higher or lower voltage, as long as it's in that Range of voltages.

I've not tried their extruders yet, since the old ones are working great now,
but I plan to soon.

Thanks for the Info,

Note: I have verified that seller is correct about there being 2 versions of connector wiring in Nema-17 motors

[Captin]

Well, the way I understand it is that stepper-motors are Not rated at a fixed voltage,
like 12 or 24 volts,
but are rated at a voltage Range, like 3 to 25v or 5 to 30v, etc.
and usually only the minimum voltage rating info is given , like 3 or 5 volts.
So they should operate on a higher or lower voltage, as long as it's in that Range of voltages.

I've not tried their extruders yet, since the old ones are working great now,
but I plan to soon.

Thanks for the Info,

Note: I have verified that seller is correct about there being 2 versions of connector wiring in Nema-17 motors

I did say "Stupid Question Time" as i don't know much about these things at all. I just know that the CTC printer uses 24v for things wheras some of the others use 12v. Luckily I have not had to change any motors in mine yet I'll have that fun at sometime I suppose though.

I did try to completely rebuild the hot end and extruders with parts from DealExtreme (very cheap chinese same as the printer ) but the distance between the screw holes on the carriage and the metal block were different on the one I bought as it seems the dimentions are not quite the same as the makerbot or flashforge. So i plan on printing a new carriage at some point.

[EagleSeven]

I got one of the stepper-motors to operate normally by reversing the 2 center pin connections,
inside the motor.
After removing motor's back cover, I cut the 2 center etch lines on the PC board.
(Don't loose the bearing spring-washer)
I then soldered in 2 small insulated wires between etch and connector pins,
in a X shape.

I have 2 more motors that I plan to do that to,
when my eyes and nerves have recovered from doing this one ! LOL

Note: To do this you need a very small-tipped soldering-iron and a Magnifier-hood

[EagleSeven]

I now have both these extruders installed in our CTC and they are working Great !

and since I now know how to fix the reversed stepper motors 'I'm All Happy Again' !