Search found 60 matches

by TorgueRPM
Dec 31 2020 6:36pm
Forum: Items for Sale - Used
Topic: US - E-Grom parts
Replies: 3
Views: 368

Re: US - E-Grom parts

Wisconsin title in my name
by TorgueRPM
Dec 30 2020 3:15pm
Forum: Items for Sale - Used
Topic: US - E-Grom parts
Replies: 3
Views: 368

Re: US - E-Grom parts

The bike is now mostly disassembled from me taking parts off to transfer to a new build. I'm lowering the price to $300 for all of it, but I am also now parting it out. If anyone has an e-grom and wants spare parts, let me know.
by TorgueRPM
Dec 22 2020 9:51pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Car Alternator to 3Phase Motor conversion.
Replies: 8
Views: 328

Re: Car Alternator to 3Phase Motor conversion.

Does the alternator use bearings or bushings?
by TorgueRPM
Dec 10 2020 6:22pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: E-Ducati Build
Replies: 49
Views: 11021

Re: E-Ducati Build

Looking fantastic. Maybe a cheap Chinese BMS but instead of driving the real load, only let it drive the DC/DC and through that a high current contactor for the motor driver. That way you lose current sense from the BMS. But at least you allow the BMS to cut off the load if it needs to. Should work...
by TorgueRPM
Dec 04 2020 8:46pm
Forum: Items for Sale - Used
Topic: FS - Motorcycle / Parts
Replies: 8
Views: 749

Re: FS - Motorcycle / Parts

Maybe the 66t sprocket depending on the chain type.

Prices are required though: viewtopic.php?f=9&t=28651
by TorgueRPM
Dec 04 2020 12:27am
Forum: Items for Sale - Used
Topic: FS - Motorcycle / Parts
Replies: 8
Views: 749

Re: FS - Motorcycle / Parts

Prices?
by TorgueRPM
Nov 17 2020 9:45pm
Forum: E-Bike Non-hub Motor Drives
Topic: HubMonster mid-drive (who says chains have to be noisy?)
Replies: 19
Views: 1081

Re: HubMonster mid-drive (who says chains have to be noisy?)

How does the motor look in this setup with the fan blades installed on the shell? I just pulled apart my hubmonster for ventilation and I'm trying to get an idea for fan blade spacing and how they create enough vacuum to pull air out through the holes. Also, regarding the close fitting intake cover,...
by TorgueRPM
Nov 16 2020 2:10pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: 1979 Yamaha XS750 conversion.
Replies: 30
Views: 3586

Re: 1979 Yamaha XS750 conversion.

Ok haha you did your homework, nevermind. That motor is going to be a hoot.
by TorgueRPM
Nov 16 2020 2:03am
Forum: Motor Technology
Topic: bac 8000 pre-charge
Replies: 2
Views: 179

Re: bac 8000 pre-charge

A precharge of some sort would be a good idea at 72v, both to avoid damage to the controller and the contactor. Use ohm's law (Voltage = current x resistance) to properly size a resistor. For example, if you want to limit the precharge current to 2 amps, then a ~36 ohm resistor should be used (72v/2...
by TorgueRPM
Nov 14 2020 6:35pm
Forum: Items for Sale - Used
Topic: US - E-Grom parts
Replies: 3
Views: 368

US - E-Grom parts

Hi all, For sale is a mostly complete chinese egrom. Not parting out yet, hoping someone will grab it for an egrom build. The bike has everything, minus the following parts: Batteries and battery box Stock controller (kinda shit anyways) There may be a couple of other things but that's most of it. T...
by TorgueRPM
Nov 08 2020 11:12pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: 1979 Yamaha XS750 conversion.
Replies: 30
Views: 3586

Re: 1979 Yamaha XS750 conversion.

I would highly recommend thickening the metal on the extension where the axle is going. Better yet, thicken it and make it clamp on the axle. That motor is probably capable of at least 30kw bursts, and the torque at those levels may shred those holes. I know some qs motors come with small torque arm...
by TorgueRPM
Nov 08 2020 11:06pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: 12kW upgraded E-Grom with ASI BAC4000
Replies: 14
Views: 2347

Re: 12kW upgraded E-Grom with ASI BAC4000

I have the keyswitch pin wired directly to B+ on the controller, just another ring terminal on top of B+. The controller turns on when the contactor closes.
by TorgueRPM
Nov 07 2020 6:59pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: 12kW upgraded E-Grom with ASI BAC4000
Replies: 14
Views: 2347

Re: 12kW upgraded E-Grom with ASI BAC4000

The 12v system is turned on by a switch on my handlebars. Then when I turn the key switch the smart precharger prechargers the controller caps and closes the contactor automatically after they are charged. This is the website with the wiring diagram: https://www.evwest.com/catalog/product_info.php?p...
by TorgueRPM
Oct 18 2020 9:38pm
Forum: Motor Technology
Topic: Hubmonster teardown
Replies: 70
Views: 8071

Re: Hubmonster teardown

Top row in that last pic above is for the YGB set of phases. many thanks John. thats sorted another hurdle for getting my hubmonster project going! next will be figuring out how to stuff the motor into/underneath the frame i want to use, or re-fab the whole rear section.. :) If not in wheel I hope ...
by TorgueRPM
Oct 18 2020 8:23pm
Forum: Items for Sale - New
Topic: PV NextGen FOC 130v 200/600A 25kw - $599, Watch Display
Replies: 262
Views: 31254

Re: PV NextGen FOC 130v 200/600A 25kw - $599, Watch Display

In theory, it should work. Over CAN, the motors are synced with understanding that they are on different axles with ability to control traction. I think it would be best, however, to implement the exact logic that would be needed to keep two pairs of phases in a single motor in sync. You mention be...
by TorgueRPM
Oct 15 2020 5:20pm
Forum: Items for Sale - New
Topic: PV NextGen FOC 130v 200/600A 25kw - $599, Watch Display
Replies: 262
Views: 31254

Re: PV NextGen FOC 130v 200/600A 25kw - $599, Watch Display

You mention being able to connect controllers via CAN, do you think there would be any issues running a dual 3-phase/6-phase motor like a hubmonster using two controllers connected by CAN?
by TorgueRPM
Sep 29 2020 9:49pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: 12kW upgraded E-Grom with ASI BAC4000
Replies: 14
Views: 2347

Re: 12kW upgraded E-Grom with ASI BAC4000

From what I've read, some motors' designs make field weakening less efficient than others, sometimes so much so that field weakening is not the best way to go about reaching higher speeds. It depends on the motor
by TorgueRPM
Sep 22 2020 8:08pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: 12kW upgraded E-Grom with ASI BAC4000
Replies: 14
Views: 2347

Re: 12kW upgraded E-Grom with ASI BAC4000

Starting my own e-grom build. I'm worried about top speed not being enough to keep up with traffic as stock these things top out around 40-45mph. I note your battery voltage didn't go up that much, was the ASI controller enough to bring that top speed up into the 60-70mph range? Hey, I'm the guy fr...
by TorgueRPM
Sep 04 2020 7:14pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: 1972 Honda CB350F conversion process
Replies: 16
Views: 2020

Re: 1972 Honda CB350F conversion process

You mentioned 10kW continuous, what is the peak power? The controller is rated for 340A peak, which works out to about 25kw I found your thread on ElMoto, keep in mind that peak power can't be calculated from motor current, only battery current. So your peak power would be 72V * peak battery current
by TorgueRPM
Sep 03 2020 3:03pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: 1972 Honda CB350F conversion process
Replies: 16
Views: 2020

Re: 1972 Honda CB350F conversion process

You mentioned 10kW continuous, what is the peak power?
by TorgueRPM
Sep 03 2020 2:45pm
Forum: E-Bike Technical
Topic: Programming ASI Bac 8000
Replies: 32
Views: 4586

Re: Programming ASI Bac 8000

The 6.x and 5.x controllers use different chipsets, so the firmware is incompatible. Not sure about what that means for your controller though.
by TorgueRPM
Aug 16 2020 6:17pm
Forum: Battery Technology
Topic: Multiple Airsoft lipos for a scooter project
Replies: 3
Views: 158

Re: Multiple Airsoft lipos for a scooter project

I'd say get some Turnigy lipo's from hobbyking
by TorgueRPM
Aug 15 2020 11:05am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: 12kW upgraded E-Grom with ASI BAC4000
Replies: 14
Views: 2347

Re: 12kW upgraded E-Grom with ASI BAC4000

Thanks!

I found the DC/DC on eBay:
https://www.ebay.com/itm/222860367230
It's non-isolated, but hasn't given me any issues
by TorgueRPM
Jul 31 2020 7:43pm
Forum: Motor Technology
Topic: 2000W Scooter Controller Guts
Replies: 19
Views: 2536

Re: 2000W Scooter Controller Guts

I made a cycle analyst adapter for my egrom, bought from the same website. It's been working pretty well for me, let me know if you want the STL files for 3d printing or the original cad files.