81
General Discussions / Re: SHORT SPOKES KIT
« Last post by Todd75 on July 06, 2024, 05:37:04 AM »......Thanks so much....I couldn't ask for a better response. Could I ask you....Who sells this kit? Is there a preferred seller out there?
News:
Magic Pie 5, Magic Pie Edge and Smart Pie 5 now available with Bluetooth connectivity for setting and monitoring.
(Bluetooth connection requires Android 4.4 onwards)
Recent Posts
82
General Discussions / Re: SHORT SPOKES KIT
« Last post by Bikemad on July 06, 2024, 12:36:49 AM »The standard spoke length for the 26" MP5 is 110mm, the same as MPII, MPIII and MP4:
I would use Sapim 13/14g stainless steel single butted strong spokes with 14g nipples, which Sapim recommend for eBikes and tandems:
These butted spokes are very strong (1250N/mm2) and rated for 1.6 million revolutions.
Gary made a good video showing how to re-spoke a Magic Pie wheel which may be helpful.
However, I strongly recommend that the spokes are fitted with their heads on the inside of the flanges as shown below:
This provides much better support for the spoke elbows which greatly reduces the chance of breakage due to fatigue and also improves the lateral strength of the wheel.
Check out this post to see how to calculate the correct spoke length if you are fitting a different depth rim.
Alan
I would use Sapim 13/14g stainless steel single butted strong spokes with 14g nipples, which Sapim recommend for eBikes and tandems:
These butted spokes are very strong (1250N/mm2) and rated for 1.6 million revolutions.
Gary made a good video showing how to re-spoke a Magic Pie wheel which may be helpful.
However, I strongly recommend that the spokes are fitted with their heads on the inside of the flanges as shown below:
This provides much better support for the spoke elbows which greatly reduces the chance of breakage due to fatigue and also improves the lateral strength of the wheel.
Check out this post to see how to calculate the correct spoke length if you are fitting a different depth rim.
Alan
83
General Discussions / SHORT SPOKES KIT
« Last post by Todd75 on July 05, 2024, 05:33:06 PM »...HELLO......Has anyone here replaced the spokes on a Magic Pie 5 26" rim....or any other rim with SHORT spokes? I'm looking for a re-spoke kit for this rim/motor that has spokes made out of stronger (thicker?) material. Can anyone steer me in the right direction? Any input appreciated.
84
Electric Boat Conversions / Looking for a reliable hall sensor throttle for boat (10 kW BLDC and E4682-48)
« Last post by Astroboy on July 01, 2024, 09:17:17 AM »Hello,
lurking here in order to find a reliable hall sensor throttle for boat (10 kW BLDC & E4682-48)
(& other troubleshooting)
lurking here in order to find a reliable hall sensor throttle for boat (10 kW BLDC & E4682-48)
(& other troubleshooting)
85
Electric Boat Conversions / Re: EzKontroller and regen on a boat
« Last post by Pontus on June 25, 2024, 07:05:05 AM »Hi,
As far as I know the EzKontroller does not have variable re-gen.
There is however the option to enable EBS auto mode and specify the motor RPM. Doing so would engage the re-gen automatically at selected rpm.
As far as I know the EzKontroller does not have variable re-gen.
There is however the option to enable EBS auto mode and specify the motor RPM. Doing so would engage the re-gen automatically at selected rpm.
86
General Discussions / Re: Simulate 3 KW and 5KW BLDC Motor Air Cooled
« Last post by Bikemad on June 22, 2024, 05:08:14 PM »Hi and
to the forum.
The rpm/V will vary with the voltage rating of the motors, but according to the dynamometer data on the goldenmotor.com website, here are the approximate rpm/V figures for the following motors:
3kW 48V = ~94
3kW 72V = ~60
5kW 48V = ~91
5kW 72V = ~59
5kW 96V = ~45
The voltage rating of the motors will affect both the Phase winding resistance and inductance.
Unfortunately, I have not seen any figures for the 3kW motors, but the figures for the 5kW motors are as follows:
The 3kW and 5kW motor variants all have 8 magnets, which equals 4 pole pairs.
I can't find any details on the no-load current at low speeds for any of these motors, so I don't know how you'll be able to derive the Hysteresis torque and Eddie current torque for any of these motors.
Regarding the controller parameters, I have not seen any resistance figures published for any of the EZKontrol controllers.
Battery Current Limit (Max Bus Current) and Phase Current Limit (Max Phase Current) will obviously vary dependent upon the exact model of the controller, but these figures are available on the goldenmotor.com website in the motor controller section.
Unfortunately, some things are never as simple and straightforward as you would like them to be.
Alan
to the forum.The rpm/V will vary with the voltage rating of the motors, but according to the dynamometer data on the goldenmotor.com website, here are the approximate rpm/V figures for the following motors:
3kW 48V = ~94
3kW 72V = ~60
5kW 48V = ~91
5kW 72V = ~59
5kW 96V = ~45
The voltage rating of the motors will affect both the Phase winding resistance and inductance.
Unfortunately, I have not seen any figures for the 3kW motors, but the figures for the 5kW motors are as follows:
- Phase Resistance (Milliohms): 6.2/48V; 12.0/72V; 36.0/120V
- Phase Induction(100KHZ): 68uH/48V; 154uH/72V; 504uH/120V
The 3kW and 5kW motor variants all have 8 magnets, which equals 4 pole pairs.
I can't find any details on the no-load current at low speeds for any of these motors, so I don't know how you'll be able to derive the Hysteresis torque and Eddie current torque for any of these motors.
Regarding the controller parameters, I have not seen any resistance figures published for any of the EZKontrol controllers.
Battery Current Limit (Max Bus Current) and Phase Current Limit (Max Phase Current) will obviously vary dependent upon the exact model of the controller, but these figures are available on the goldenmotor.com website in the motor controller section.
Unfortunately, some things are never as simple and straightforward as you would like them to be.
Alan
87
General Discussions / Re: What connector is this?
« Last post by Cosmitz on June 22, 2024, 04:09:43 PM »Thank you, that's exactly it. I happened upon a 8pin microfit connector in a dell workstation at work right now as I was losing my mind and it looked the right size, sadly the keying is not compatibile with 6 pin even if I chop 2 pins off. At least it's been confirmed as to what's needed, now just need to find a matching connector on the local market and I can finally get this rolling and activate regenerative breaking on my TC Max. This has all been more learning than I signed up for to save 30 bucks. 
88
General Discussions / Re: VEC300 with 5kW motor
« Last post by Bikemad on June 22, 2024, 03:53:21 PM »Hi Charles,
The Brown and Yellow wires are connected to the switch in the throttle.
You can use these to operate the eLock function of the controller, or use a separate key switch etc. if you prefer.
Although the thumb throttle is a Hall Sensor device, it should also work with the controller's throttle mode selection set to Potentiometer as well.
Alan
The Brown and Yellow wires are connected to the switch in the throttle.
You can use these to operate the eLock function of the controller, or use a separate key switch etc. if you prefer.
Unfortunately, it looks like your controller is currently programmed for a boat style throttle, which is not very helpful for a motorcycle.
You will need the USB programming cable and the PI-800 programming software to change the Throttle mode selection setting from 0:Hyperbola to 1:Linear.
If that doesn't fix the problem, try changing the Speed throttle type setting from 0:Hall effect throttle to 1:Potentiometer throttle (or vice versa).
The correct combination of the above settings should make your throttle respond as expected.
Although the thumb throttle is a Hall Sensor device, it should also work with the controller's throttle mode selection set to Potentiometer as well.
Alan
89
General Discussions / Re: What connector is this?
« Last post by Bikemad on June 22, 2024, 03:30:26 PM »Hi Cosmitz andto the forum.
After studying the picture it looks as if the required plug might be a Molex Micro-fit 3.0 connector Pt. No: 43025-0600.
Check out the pdf drawing to see if the dimensions match your controller's connector.
Alan
to the forum.After studying the picture it looks as if the required plug might be a Molex Micro-fit 3.0 connector Pt. No: 43025-0600.
Check out the pdf drawing to see if the dimensions match your controller's connector.
Alan
90
General Discussions / What connector is this?
« Last post by Cosmitz on June 22, 2024, 02:23:10 PM »This is a relatively quick one, i'm working on connecting to a new TCMAX using the VEC300/HC3X controller and I found most of all the information I need EXCEPT what plug is that. From initial pictures I thought it was a 6pin atx-style plug but it's much smaller. Pic related.