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Golden Motor Horror Show

Harpo

New here
Joined
Jun 5, 2026
Messages
18
Location
Iowa
Being 71 years old and having leg and balance issues, my doctor strongly suggested I should get off the road bike. Wanting to stay active, I decided a recumbent tadpole trike would be just the thing. A few weeks on it showed me the leg geometry is a lot different than a bike, so I thought the logical solution was to add a rear hub motor with throttle. So far, so good.

Having several pieces of EGO equipment, I thought this might be a good way to economize. I communicated with Golden Motor, told them my plan, and they recommended the Magic Pie 5 with internal controller - and guaranteed me it would work fine with EGO/14s batteries.

Based on that information,
I proceeded to bring the trike up to my desired specs. It's a Terratrike Rover with SA internal 8sp, 20" wheels all around but will accept a 26" rear with no frame mods, and I found this is often done.

Since the Magic Pie 5 rear comes only in a freewheel version, I ordered a new 6sp freewheel, derailleur, shifter, and chain. I also obtained all the electrical bits I deemed necessary (disconnect switch, circuit breaker, ammeter) and misc hardware and wiring to suit. Not planning any high speeds, I also ordered new TT 32H front hubs from Utah Trike and Sunringle 24" rims, along with spokes, nipples, liners, tires and tubes. This makes for a slightly more tippy but much more comfortable machine.

I equipped the Magic Pie 5 with a Continental Contact Urban in 26", installed it, and spent the next week sorting out the derailleur/shifter system and getting the feel of the bike before adding the battery/throttle/controls and wiring. No brake switches yet since I need parking locks, but Golden assures me they are not necessary to run the motor. With everything sorted, I put her on the rollers, pop in a battery, and... Nothing. Magic Pie 5 does absolutely nothing. Three lights on the throttle, but no movement at the wheel.

I contact Golden, Zar runs me through the troubleshooting steps (disconnect all but throttle, etc) but still nothing. Having hooked up the USB connector and finding 48v as the top available setting, I ask again about EGO/14s. Zar assures me 57.7v is no problem, should work fine. I also try a partially discharged battery at 47.5v, still nothing.

With no success, his next step is "Remove the rear wheel, remove the cover and controller, hook up the battery, and watch for a red LED to come on, or not, or flash. Oh, and it also might be potted in gray epoxy and hard to see, so look close".

In retrospect this was a ridiculous request. I mean, if I buy a new TV and it doesn't turn on, is it reasonable for the factory to request I troubleshoot it at circuit board level? Regardless, I remove the rear wheel, remove the cover (which is securely glued on), and attempt to remove the controller. I say "attempt" because the mounting surface was apparently slathered with Loctite before assembly, and it does NOT want to come off.

I give Zar this information, here is his advice: "You just need a bit of force to separate it from the actual frame, you can use any tool to press it force out a bit." I take his seemingly unwise advice and enlist the same combination that was necessary to remove the outer cover, a sharp putty knife and judicious use of a small hammer. This results in a small piece of the case breaking off, so I quit.

Side note: I am 71 years old, a lifetime mechanic/technician/machinist, and I am no stranger to tools, motors, engines, or electronics. I'm not some hack with a hammer (though Zar doesn't seem to care), and I know what I'm doing. I've literally never paid anyone to repair anything.

I send Zar news and pictures of my unsuccessful attempts at doing their troubleshooting, and suggest they send a replacement asap. He offers that they must do a warranty determination before that can happen. I escalate the issue to Daryl, who identifies himself as the owner of Golden Motor. He too refuses to ship anything without a warranty examination, heated words ensue, and he finally agrees to ship a replacement as soon as I send him tracking info on the defective one.

Fast forward one hour, I receive a call from Daryl. He states that the motor will NOT work on my battery of choice, and their guarantee that it would was in error. He's "sorry" I spent so much time and money on a project that I never would have started without his guarantee, but that's it.

So here I am, five weeks into a project with no hope of completion, and a MAJOR investment in dollars and time in a trike I cannot use. Without Golden's guarantee that this motor would work with my batteries, I never would have started this project.

Yes, I could spend another $1500+ on a Grin motor, but that would also mean scrapping the drivetrain since they only offer cassette rears.

The moral to this story should be obvious, so I won't state it here - but beware.

Kind Regards,
Garry
 
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Welcome to the forum.
The controllers in these are known to be crap for ages, and fail often.
Or your kit was built on a friday.

I would have recommended a RH212 because it's lighter, more efficient, and about the same pricewise, sans the internal controller.
But the pie is still a nice motor due to it's diameter, and worth using if you're stuck with it.

If you are handy with a soldering iron, you can run 3 phases out the axle, and drive it with a commodity controller pretty well as a sensorless motor.

Hope warranty works out for you.
 
Hmm, those Ego batteries are what we in the ebike world call 52V batteries. There's reports of 52V batteries working fine with the Magic Pie 5:
 
Thank you for the kind welcome! I'll get credit for this motor, that's for sure - and I'll never use another Golden Motor product.

The RH212 looks very interesting, I've sent a request for clarification on some points but I think it will be a good fit, and clearly better quality.

Agreed, EGO batteries are 14s, nonetheless Daryl at Golden says the Magic Pie 5 will not work with them. At this point I'm so disgusted with their (lack of) customer service that I never want to see another one of their products. They seemed very knowledgeable, right up until they admitted they aren't.

Hopefully the tariffs etc aren't too outrageous from Grin and I'll be able to get this project moving!
 
I think most motor manufacturers aren't going to be familiar with repurposing tool packs, unfortunately. Tool packs often advertise voltages differently.

Even if they were familiar, they might be somewhat obligated to deny compatibility anyway because many tool packs lack safety features like low voltage cut offs. My kid's power wheels car has destroyed three or four Milwaukee M12 battery packs that way. They are safe to use with Milwaukee tools, though, since the smarts are in the tool.

Then there's also often a language barrier issue. I've been told anything that will make a sale countless times on AliExpress just to find out it's wrong later. Even bought "30A" controllers with "30A" labels on the side that were really 12A when I checked the software settings and given the run around on chat until the return period expired.

That said Grin is Canada based, so, same language. They've always answered my emails too even about hacking weird combinations of equipment together as well. So if anyone is more skilled at it, it's them.
 
While the Ego battery might be the right voltage, I don't think it will work without getting some data communication from the tool. It's a "safety feature" that prevents you from using it on anything other than an Ego tool.
You may need to find a different battery.
 
While the Ego battery might be the right voltage, I don't think it will work without getting some data communication from the tool. It's a "safety feature" that prevents you from using it on anything other than an Ego tool.
You may need to find a different battery.
They are definitely being used, here's an example: EGO 56v Ebike. Mounts are easy to find on Ebay/Amazon, and the 3d printer file for it is common. I'm confident a simple two wire connection will be fine.

 
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OK. I have one in the garage I can test.
I know for sure the tool won't work without the communication.
It's easy enough to test. If you get full pack voltage to the controller when it's running, it should work.
 
One test is worth a thousand opinions...

I tested my Ego battery and it does allow discharge without any data connection, so it should work to power a bike motor as long as the current isn't too high.
 
We're probably looking at a busted controller.
I'm betting OP doesn't have another battery lying around to try, to be 100.1% sure
 
We're probably looking at a busted controller.
I'm betting OP doesn't have another battery lying around to try, to be 100.1% sure
I tested with both fully charged (57.7v) and partially discharged (47.5v) batteries, no response from the motor and no voltage drop with either battery.
 
That points to the controller.

Have you attempted to run the controller with nothing but a throttle or PAS device hooked up to it?
 
Yes, my very first test was with a fully charged battery and no controls except the throttle attached. Also tried the same with the partially charged battery. Daryl at Golden stated emphatically that 57.7v likely destroyed the controller, and that EGO/14s batteries will not work, despite what I was told when I began this project..

On your suggestion I've been talking to Grin, I think the RH212 with Phaserunner will be a much better choice. I just need to sort out what cable extensions might be necessary, if any.
 
Should not be necessary. I made a 3D printed dock for EGO batteries that has contacts only for the + and - slots on the battery. They drove my old TSDZ2 and now drive my current CYC Photon just fine without any connections to the data contact slots. My batteries are a bit older now so maybe it is possible they have changed, but I doubt it. I carry the EGO batteries on the dock on the rear rack as backup for long rides or stand alone for short rides. They work great.

While the Ego battery might be the right voltage, I don't think it will work without getting some data communication from the tool. It's a "safety feature" that prevents you from using it on anything other than an Ego tool.
You may need to find a different battery.
 
The RH212 won't disappoint on power and torque in a 26" wheel. Phaserunner is a good controller but insufficient if you are looking for wheelie power, or close to. 😅 some people have put 8000w into that motor and lived to tell the tale.
Make sure to get a v7 torque arm or two with it. Motors this powerful can't be safely operated without them.

Otherwise it has nice efficiency during climbing, if you're doing a decent amount of that. And from takeoff, too.

All axle is a great motor for flats if you could afford it. 5lbs less, easier to take on/off when you get a flat, and enough power to do ~30mph continuously on flats.
 
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