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General Discussions / Re: 5KW motor noise
« Last post by B0bD on May 07, 2024, 01:54:40 PM »
sound file attached, running with no load, from zero to about 4500 RPM

The motor is running by itself - water pump off, gearbox disconnected.

With my stethoscope, it sound like the noise is coming from the upper area of the motor ( opposite the output shaft.
Unless there is some way that mis wiring would cause such a noise, I think I'll have to pull apart the motor and check the bearings.
Its out of warranty.

Wonder if anyone has an exploded view of the motor.

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General Discussions / Re: 5KW motor noise
« Last post by Corchard on May 07, 2024, 12:22:20 AM »
What sound is it making?  And where is the noise coming from:  electric motor noise, Gear noise, battery noise, water pump noise,Controller noise,...?

I have the air controlled version of that setup and at full speed it is barely above 40 DB.
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General Discussions / Re: VEC300 with 5kW motor
« Last post by Corchard on May 07, 2024, 12:11:53 AM »
I need help again.   I've given up on the curtis ET-134 and will be using a 10KOhm Potentiometer and some switches and I have a couple (More) questions.

Is there a configuration of the throttle wires (black/white), (green/white) and (red/white) that can be managed by an ON (Green light)-OFF-ON (Red Light) lighted switch such that the OFF position does not send signal regardless of the potentiometer resistance?
Pinout:
   1 Green light on
   2 Common (+ve)
   3 Red light on
   4 Negative

For the above configuration, how can the can the Red light on position enable the reverse (brown and black) switch to throw the motor in reverse?

For reference my Parts list is
- elock: https://www.bluesea.com/products/2155/SPDT_Remote_Control_Contura_Switch_-_ON-ON
- potentiometer/Throttle: https://www.digikey.ca/en/products/detail/te-connectivity-passive-product/3-1625931-1/2363861?s=N4IgTCBcDaIIIEYAMBWA7GNBaAcgEQAIQBdAXyA
-rocker switch: https://www.digikey.ca/en/products/detail/cw-industries/GRB260D501BBRG1/2349704?s=N4IgTCBcDaIMIHUCMYAsBaAcgERAXQF8g
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Wanted / Re: MP3
« Last post by Bikemad on May 05, 2024, 11:20:09 PM »
As the 10 previous posts in this "Wanted" section have been viewed between 2,939 and 6,693 times each, I would say that someone must be reading them.  ;)

If you want to buy an MPIII then a bit more information might be helpful such as wheel size, front or rear fitment and your location etc..

Alan
 
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Wanted / MP3 48v thumb throttle
« Last post by ElectricStreet on May 05, 2024, 09:23:55 PM »
Does anyone read these wanted/for sale posts?
The last "WANTED" ad was almost two years ago.
I'll pay twice the price for a working thumb throttle.
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Magic Pie & Smart Pie Discussions / Re: MP EDGE: bearing sizes?
« Last post by Bikemad on May 05, 2024, 12:39:30 AM »
Thanks for the update, and for clarifying the correct bearing size.

I apologize for the misinformation and I have amended my previous post with the correct details to prevent further confusion.

From your pictures and measurements, the correct large bearing for the Magic Pie Edge should be a 6817-2RS (85mm x 110mm x 13mm).

I'm now wondering if the Smart Pies also use the same size bearings as the Edge.  :-\ 
I'll have to take a sneaky peek inside one of my Smart Pies at some stage to confirm the bearing sizes.

Alan
 
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General Discussions / 5KW motor noise
« Last post by B0bD on May 04, 2024, 06:50:38 PM »
I have a 5kw water cooled 48V motor with a VEC300 controller, connected to a 14 cell LFP battery, powering a converted 9.9 Evinrude outboard.
It works fine but it is really noisy.
3-4 feet away, under no load, with the engine cover off, I measure up to 90 dB.
This is with the motor disconnected from the outboard motor gearbox.

Is this noise level unusual?

Is it possible for a mistake in the wiring to cause excessive motor noise?

IThe noise drops about 10dB when I put on the heavily insulated engine cover, but even 80 dB is much noisier than I would expect.

Any thoughts or suggestions will be appreciated.

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Magic Pie & Smart Pie Discussions / Re: MP EDGE: bearing sizes?
« Last post by Thingamajig on May 04, 2024, 01:59:32 PM »
Just thought i'd come back with an update.

The large wheel bearing is definitely not the same size. Picture for comparison:


Top is the Magic Pie Edge large bearing (brake/controller side) bottom is the one recommended here.

I measured my MP Edge bearing size to be: 85x110x13 and NOT the 85x120x18 as recommended.

Not a big deal, can easily return and exchange -- just thought i'd update here as the infographic is not applicable to the MP Edge hub.


The other bearing size however is 100% correct (The small one/gear side) at least for a Freewheel type hub which is what mine is.

Hopefully this helps others. Thanks again for all the help.
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General Discussions / Re: Sailboat with a 5kw motor registration
« Last post by Bikemad on May 02, 2024, 03:22:34 PM »
I have not seen any motor plates or dot marked serial numbers on any of the pictures/videos of the HPM5000 motors that I have seen, just a sticker with a date at the top and what I presume to be the part number of the motor at the bottom:



Perhaps someone who has one of these motors can clarify whether or not they actually have a unique serial number on each motor.

Alan
 
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General Discussions / Sailboat with a 5kw motor registration
« Last post by Recontato on May 01, 2024, 07:20:00 PM »
Is there a serial number or motor plate/number on 5kw BLDC motor? I would have to fill out the registration application for my sailboat.
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