Re: (ET) E-20 Rebuild w/Electronic Controller Kit

[Rob Brockway <getractor yahoo com>]

Dave,
Two questions on controllers.

First how much braking can you get from regen on the 4q?  Is it good 
enough to not use the mechanical brake?

Did the altrax have regen?

Thanks,

Rob


Sent from my iPad

> On Nov 5, 2021, at 5:01 PM, David Roden <etpost drmm net> wrote:
> 
> Hi John,
> 
> The Electric Tractor Store seems to be a very part-time activity for 
> Jim.  
> Keep trying and eventually he'll respond.  It may take days or weeks.
> 
> Jim offers a GE controller.  IIRC it's a bit on the pricey side but 
> looks 
> to be a solid choice.  I don't know of anything other than Jim's package 
> that's closer to being an actual ET controller kit.
> 
> Other controllers will probably be cheaper, but will require some 
> moderately significant electrical / electronic chops to adapt and 
> install.
> 
> Alltrax once made a controller designed for the ET.  It worked very 
> well.  
> They discontinued it in 2018 when they redesigned their controller 
> range.  
> They hadn't sold enough of the first model to make a new one worthwhile. 
> If 
> memory serves, the only reason that they ever made an ET model at all 
> was 
> that at the time they had an engineer on the staff who owned an ET.
> 
> Several people here have used Curtis golf car controllers, apparently 
> with 
> success.  Some electrical design work is required.
> 
> Probably an Alltrax could also be used.
> 
> Any series motor controller is a bit iffy with an ET motor.  The ET 
> motor 
> inductance is lower than a series motor controller usually expects, so 
> the 
> controller's current limit may not be able to react fast enough.  If you 
> use a series motor golf car controller I recommend getting the highest 
> current capacity that you can afford.
> 
> 4QD controllers from the UK are harder to come by than Curtis or even 
> Alltrax, but I think might be a better choice.  they're meant for PM 
> motors 
> but should work fine on an ET sepex motor if you rig up field control.  
> Some 4QD models have brake release outputs that can be used to operate a 
> field relay. 
> 
> I may have a slightly used older 4QD with brake output for sale soon.
> 
> 
> David Roden - Akron, Ohio, USA
> 
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