Recent Posts

Pages: 1 [2] 3 4 ... 10
11
General Discussions / Re: New member with seized 5kW motor
« Last post by Bikemad on October 07, 2025, 01:13:54 PM »
I have just been looking at another post showing the inside of the air cooled motor and one of the photos shows four round (threaded?) holes on the rotor:



I suspect that these holes in the rotor disc will be threaded, and would be used (along with a special puller) to pull the rotor disc off the splined motor shaft.

If the rotor disc has been pushed onto the shaft too far by installing mounting bolts that were too long, then you may be able to use some suitably threaded rod and nuts in conjunction with a solid piece of hardwood (or steel box section) across the end of the motor shaft to pull the disc back slightly:



If (after removing the circlip on the motor shaft) the motor cannot be dismantled easily, you may be able to use a simple puller (similar to the one shown above) with the threaded rod screwed into the mounting bolt holes on the front casing to gently pull the housing/bearing off the shaft.

If the centre of the shaft end has a threaded hole for a bolt, you should be able to use a piece of threaded rod and suitable lengths of wood or piece of metal tubing with a large washer and nut to gently pull the motor shaft back through the bearing and front housing again:

   

Hopefully you will be able to sort the problem with this information.



Alan

EDIT: Additional attachments added to post.
12
General Discussions / Re: New member with seized 5kW motor
« Last post by Bikemad on October 06, 2025, 09:56:54 PM »
Hi Marcogi andto the forum.

Unfortunately, I have never had my hands on a HPM5000 motor to dismantle, but I have attached a photo showing the inner components of the air cooled  HPM5000B motor which should give you a good indication of how the air cooled version will come apart.

However, after watching this video, the water cooled version looks like it may be a lot more involved to remove the rotor and stator assembly if the front and main body casing is all one piece.

It looks like you would have to somehow remove the cable glands and then feed all the wires inside the casing before being able to press out the rotor assembly from the front casing.

Just a thought, but if the threaded mounting bolt holes go all the way through the front casing it might have physically locked the rotor if long mounting bolts have been used as their tips may be touching against the steel rotor.

Alan
 
13
General Discussions / New member with seized 5kW motor
« Last post by Marcogi on October 06, 2025, 12:11:58 PM »
Hi, I’m a new member.
I have a Golden Motor 5kW BLDC motor that has mechanically seized after a few hours of use.
It’s completely blocked (cannot turn by hand). Bearings are OK, but I suspect a rotor–stator contact or magnet shift.
Can someone confirm the correct internal structure (axial flux) and provide disassembly instructions or photos?
Thanks!
14
General Discussions / New Member
« Last post by Wguntz on October 05, 2025, 05:39:22 PM »
Planning to install a Goldenmotor Magic Pie rear hub drive on a recumbent trike, and looking forward to being a part of the GoldenMotor forum!   Thanks!    Wayne
15
General Discussions / Re: New to Forum
« Last post by Bikemad on September 30, 2025, 09:35:30 PM »
Hi Joe andto the forum.

Hopefully you will find lots of useful information on this forum.

Alan
 
16
General Discussions / New to Forum
« Last post by FloridaJo on September 29, 2025, 03:20:20 PM »
Hi, I just converted a friends trike to e-trike and am now researching all things related to e-motors.
Been an electronic technician since 1985.
17
Electric Boat Conversions / Sailboat Motor Conversion - 5kw or 10kw?
« Last post by PipeDreamIII on September 09, 2025, 07:33:42 PM »
Hi All,

I'm looking to convert the motor on an older Hughes 26 Sailboat. The boat weighs about 4500lbs, and has a hull speed of just over 6 knots. I'm debating between the 5kw and 10kw motors. I'd like to hear from others what they've put in and what they would recommend.

Thanks!
18
Magic Pie & Smart Pie Discussions / Re: New user/ aquired a drift trike
« Last post by Bikemad on July 20, 2025, 10:01:22 PM »
Hi andto the forum.

Did the three LEDs on the throttle all light up when the battery was connected and turned On? If the LEDs were not lit up, it could be a battery problem.

If the motor has been completely submerged in water, the motor's controller and bearings may have been affected by short circuits or corrosion, especially if it was salt water.
However, if the wheel still rotates easily by hand, the stator and magnets may still be salvageable, but the motor would need to be dismantled to see the full extent of any water damage to the magnets, the laminated steel stator assembly and possibly the steel legs on the Hall Sensors.

If the entire trike has been under water, there's also the possibility that the water might have affected the throttle and/or the various connectors on the wiring harnesses as well.

Start by carefully checking all the connector pins for signs of water residue or corrosion, especially the 5 pin throttle connector and the main 10 pin connector between the main harness and the motor harness.
If you find any water residue, clean and dry the connectors thoroughly and see if it makes any difference.

Unfortunately, the controllers have been known to fail if water gets inside them, but you would have to remove the controller assembly to check for any signs of water being inside the controller. . :(

Alan
 
19
Magic Pie & Smart Pie Discussions / New user/ aquired a drift trike
« Last post by JDunno on July 19, 2025, 03:25:06 AM »
Hello, name is JDunno. I've just registered here because I'm completely lost when it comes to electric bikes and trikes. I'm an old school combustion engine guy, trying to get up to par with the electric side of things. I've acquired a drift trike that has the golden motor on the front big wheel with a 48v battery that locks in place on the back. Upon getting juice in the battery and turning it on, I got no response from twisting the throttle. So I got ro checking things out and come to find the front wheel motor is or was completely full of water. That's where I'm at with it now. Was wondering if it's salvagable or do I need to replace it?
   Thanks in advance for my confirmation as a memeber and for any responses I may recieve.
20
General Discussions / Re: Improve acceleration on EZKontrol 48V BLDC and 5kW Motor
« Last post by e-lmer on July 03, 2025, 05:30:57 PM »
Hi SilverFixer
There are eight different versions of this controller.
The model number starts with a letter followed by 6 or 7 digits.
Please let us know which one you have.

Elmer.
Pages: 1 [2] 3 4 ... 10