Quote:
Originally Posted by koputai
AOK, do you think your EQ6 was that bad from the factory, or was it due to lots of use by previous owners?
If they come like that from the factory I would be amazed. My EQ6 that I bought 2nd hand here on IIS makes no grinding or chattering noises, everything sounds perfect.
Cheers,
Jason.
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Im unsure on that part, apparently it was untouched but i can see marks from removal. The black O-rings look factory as ive seen bits of them in other images on the net. The newer designed motor is improved but still has a little backlash. Both are equal now.
The noise is hit and miss, all the mounts are the same, some are just tigher than others and you might get the noise on day when something works loose. What stops the noise is the pressure on the transfer gear and the grub screw on the side as it actually bends the shaft to 1 side.
With the noise i think its a combination of the stepper motor and transfer gear, if i push on the motor shaft it has some movement up and down which is a sign of a cheap stepper motor and increasing preload on the gears seems to stop it also. I have other motors here in the same dimensions and shaft size that have 0 movement from japan servo, i just wish they were the same bipolar motor
No sure why the gearboxes are different, maybe they had them laying around. Also another unusual thing is 1 wiring header on the board for one of the motors is 5 pin with 1 not in use as the motors are 4 pin headers.
I would love to hear what tasco say on the issue as the noise is a very very fine line between too tight and noise, personally i can live with the noise but not the movement in the gears. With my plastic washers the takeup point where it goes tight is very small so it takes a while to get the tension right.
Not sure on the bushing material but they come from production printers in the fusing unit as shaft holders so they are rated for 200c and holding a spinning load. I would love to replace it with ball bearings actually and i do have some nice sized ones. However i might stop in at a bearing shop and see what they have... a thrust bearing with around 4.95mm ID and 12.02mm OD would do the trick