FIrst things first: find out what's going on. You need a proper ammeter so
you can measure the actual motor current. If you have one measuring battery
current, why not move the shunt so it's measuring motor current?
Alternatively, you could buy another ammeter. The ones sold by EV parts
deal
Inefficient energy storage device? How so?
Compared to batteries, they can store energy much longer. Batteries are in
their sweet spot for energy storage for a number of hours, hydrogen for longer
periods. Batteries are for small scale storage, hydrogen can be used up to grid
level storage.
M
On 31 October 2017 at 06:37, Mark Abramowitz via EV wrote:
> Inefficient energy storage device? How so?
In the way that efficiency is defined; Energy out of the system,
divided by energy into the system, multiplied by 100.
> Compared to batteries, they can store energy much longer. Batteries a
It sounds like you need new brushes at a minimum.
I have the same motor and have taken some photos of my brushes
(installed) earlier this year. They are mounted in pairs (each brush has
two pigtails).
You can see the photos here:
https://www.summet.com/blog/2017/10/31/fb1-4001a-motor-brush-ph
Hydrogen might be useful for grid storage. Looking at roughly 50%
efficiency is a big hit but if you have surplus energy and no other
practical way to store it, H2 is an alternative. Pumped storage, on the
other hand, is estimated to be 70-80% efficient. A better alternative if
you can create l
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Hey Mark,
I’m not arguing with you! I was trying to relate what I heard Elon say. I could
be wrong but he seemed to be talking in general not just focused on EVs. We
used Hydrogen in the Space Shuttle and they even had a Hydrogen fuel cell on
board but it you notice Space X used RP1.
Sent fro
There is an interesting point of overlap between hydrogen energy storage
and battery energy storage. The nickel-hydrogen battery has been used
for decades. They are capable of very long life, and high energy
density, and can work in extreme environments. The International Space
Station uses th
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Sorry, I didn't realize my Webmail was set to HTML. Sending as Text:
I wiped the armature after I replaced the brushes, but I didn't do anything to
remove carbon more aggressively (no stoning or anything). I also blew out all
the carbon from shaping the brushes. That made a big mess! My brushes
Hi Jay,
I don't have photos, but I just replaced the brushes in my motor and they look
very similar to yours now. My new brushes might be sticking up an extra mm or
so, but not much more than that. Also, the braids on your brushes still look
shiny and coppery. My old brushes had braids that had
Hi David,
The pictures that Jay posted show the brushes very well. They are installed in
pairs, in 4 locations. In 2 locations, the brush nearest the end of the motor
had braids that were worn, or corroded, or somehow damaged. On the brush where
the braid was completely gone, it actually looked
Ok, good to know about my brush life, thanks.
I re-read the whole thread and realized that replacing your brushes did
not fix your issue of super slow acceleration. So unless you are seeing
a lot of sparking from your brushes when running it no load (try 12v
battery alone as suggested) I'd be
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Please discuss EV drag racing at NEDRA (http://groups.yah
http://www.patentlyapple.com/patently-apple/2017/10/apple-has-acquired-a-new-zealand-based-wireless-power-company-for-future-idevice-and-project-titan-solutions.html
Apple has Acquired a New Zealand based Wireless Power Company for Future
iDevice and Project Titan Solutions
October 24, 2017 Jack
https://www.webwire.com/ViewPressRel.asp?aId=215455
Nissan to unveil new ambulance and electric delivery vehicle
October 19, 2017
[image
https://photos.webwire.com/prmedia/6/215455/215455-1.jpg
e-NV200 Fridge Concept& Paramedic Concept& Paramedic Concept
]
New Paramedic Concept and e-NV200
https://www.treehugger.com/corporate-responsibility/what-happens-electric-resale-value-longer-range-models-become-available.html
What happens to electric resale value as longer-range cars become available?
October 24, 2017 Sami Grover
[image
https://media.treehugger.com/assets/images/2015/10/
https://electrek.co/2017/10/25/tesla-bus-spotted-charging-supercharger/
Tesla-powered electric bus project spotted charging at a Supercharger
station
Oct. 25th 2017 Fred Lambert
[images
https://electrek.co/2017/10/25/tesla-bus-spotted-charging-supercharger/
https://electrek.files.wordpress.co
http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-spied-Tesla-e-bus-project-charging-Oakdale-MN-Supercharger-tp4688443.html
EVLN: (spied)> Tesla e-bus project charging @Oakdale-MN Supercharger
Tesla-powered electric bus project spotted charging at a ...
In Europe, where Tesla uses
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