Has anybody put Nema 14 motors on an EQ5?

[Horwig]

I'm thinking of motorising my old EQ5, using an AstroEQ controller. Can anybody give me some first hand experience of their conversion, what model motor are you using, what pulley ratios did you use, what's the slew speed are you getting, that sort of thing.

Thanks

 

Huw

[Dr_Ju_ju]

Hi Huw,

On the AstroEq site, there are some recommendations for steppers\pulleys\belts etc.

I used Nema 17 motors ,hi-torque, from OMC stepper-online on eBay, then the rest  from Belting On-line

[almcl]

+1 for the NEMA 17s.  I started out with the 14s but my imaging rig weighs ~13kg and I switched to 17s.  Fortunately the same belts and pulleys (as per the recommendation on the AstroEQ website) fitted, although I had to make up new brackets.  

Finding NEMA 17 motors within the current limit of the 8825 drivers chips takes a bit of care, but they arrived (from China) in under a week, once chosen.  

As regards slew speeds, the 800 setting gives horizon to horizon in under two minutes.  

[Horwig]

Thanks both, which Nema 17 motors did you use?

[almcl]

I got two of these off ebay, but you might want to double check the specs.

http://www.ebay.co.uk/itm/3D-Printer-Nema-17-hi-torque-550mN-m-Stepper-Motor-75oz-4-Lead-2-phase-/322303326914?hash=item4b0ac67ac2

Can't remember if it came with connectors, another thing to check...

[Dr_Ju_ju]

I bought these http://www.ebay.co.uk/itm/High-Torque-Nema-17-Stepper-Motor-60Ncm-85oz-in-0-64A-CNC-3D-Printer-Extruder-/121681232843?hash=item1c54c443cb

[Horwig]

Thanks both,  Nema 17 it is then

[m000c400]

I managed it with 14's.  You can just about fit a 14, pullys, belts and a control system in the standard housing which makes a very neat solution

My quick write up is here

https://stargazerslounge.com/topic/261153-another-eq5-upgrade-project/