Re: Free ADC motor and controller - at tonights SEVA meeting

[Offgrid engineering]

If anyone speaks up and wants a good motor and controller, for say a tractor, mower, really monster go-kart, small car, etc, just raise your digital hand and let me know.

The motor is a lightly used series wound DC motor, an Advanced DC motor Inc X91-4001, built in 1991 and designed to run at 72 or 96V, mainly used in classroom demonstrations. The brushes look good and there is are two shafts, one is .750in and the other shaft is 1.125in, both are splined. Also there is a mounting bracket and controller that can go with the motor if you like.

There is one on ebay for over 500 bucks right now...https://www.ebay.com/itm/257172347802

Let me know, and it's yours. You can give me some beer money if you really want to...

Tim Economu

On 1/30/2026 9:02 PM, seva...@googlegroups.com wrote:

seva...@googlegroups.com

Google Groups

Today's topic summary
View all topics

• Early Model S Resurrection Sagas Continue (lengthily)- Jay's Midnight Star - 1 Update
• good adam savage video on 18650 cell quality variation, with cat scans! - 1 Update

Early Model S Resurrection Sagas Continue (lengthily)- Jay's Midnight Star

Jay Donnaway <jra...@gmail.com>: Jan 30 05:22PM -0800 Ok SEVA, it's been a bit, but that's because I've been biting my tongue while waiting. You may recall that I acquired a well-worn car from a SEVA member as our SECOND 2013 Model S! *Midnight Star* ...more

Back to top

good adam savage video on 18650 cell quality variation, with cat scans!

madderscience <madder...@gmail.com>: Jan 30 08:04AM -0800 https://www.youtube.com/watch?v=-Y23nfAOiXQ   Brian H ...more

Back to top

You received this digest because you're subscribed to updates for this group. You can change your settings on the group membership page. To unsubscribe from this group and stop receiving emails from it send an email to seva_list+...@googlegroups.com.

[Offgrid engineering]

[SevaS...@hpev.com]

Could be helpful to list the motor diameter and length Tim. It looks smaller than an 8, but if it were a standard 8inch diameter ADC I’d take it as I could use it for reviving the Crazy 8’s Fiero :)

Cheers

-Stephen J.

-------- Original Message --------

--
Learn about EVs and EVents at: https://www.seattleeva.org
---
You received this message because you are subscribed to the Google Groups "SEVA Email List" group.
To unsubscribe from this group and stop receiving emails from it, send an email to SEVA_list+...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/SEVA_list/69763877-b67c-4c67-ae67-aebc1357ef35%40gmail.com.

[Tim Economu]

Hey Steven,

According to Google... here are the specifications. Also I do have the Alltrax controller and PB-6 pot throttle

t

The Advanced DC (ADC) Motors X91-4001 is a 6.7-inch diameter series-wound DC motor commonly used in electric vehicle (EV) conversions. 

Key Specifications & Details:

• Manufacturer: Advanced DC Motors (ADC)
• Model Number: X91-4001
• Diameter: 6.7 inches
• Length: 15.3 inches
• Voltage Range: 72V - 144V
• Type: Series DC Motor
• Application: Ideal for long-range, good-performance electric vehicles up to 750kg, particularly at 120V. 

The X91-4001 was part of the ADC motor lineup often paired with Alltrax controllers, which feature 18 kHz frequency and 0-5000 ohm throttle input. 

[Ron Pace]

Hi, Tim.  If that motor and controller are still available, (after the SEVA monthly mtg), I'd like to talk to you about them.  I've been dreaming and scheming for several years to build a Triumph Spitfire conversion, and now I have the donor car, I'm approaching retirement and beginning to gather the conversion components.  If your motor would be suitable for that frame, and if it's still in your garage, please drop me a note and I'll call you about picking it up.  Thanks.  Ron 

To view this discussion visit https://groups.google.com/d/msgid/SEVA_list/ab92cd10-8bc2-4629-b4e9-5c566d9df698n%40googlegroups.com.