I have a few cells in my 45 cell pack of calb 180's that are showing signs
of age after 6 years of daily use. I'd like to replace the lowest cells
and since the rest of the pack has some wear, thought used cells would be
appropriate and lower cost.
Does anyone have some used cells looking for a h
I made a 90A single cell load resistor out of 20 ga resistance wire (search
amazon for kanthal wire) and some half inch copper tube I had laying
around. The pipe was turned into two rails maybe 24" long each and spaced
about 6" apart. The resistance wire was then wrapped around from rail to
rail
ssage-
From: EV [mailto:[hidden email]
<http:///user/SendEmail.jtp?type=node&node=4676196&i=0>] On Behalf Of Joe
via EV
Sent: Friday, June 12, 2015 12:10 PM
To: Electric Vehicle Discussion List
Subject: Re: [EVDL] DIY EV air conditioning? 3 phase motors
Just some info on the 2nd gen pr
Just some info on the 2nd gen prius a/c compressors that I've either read
about or figured out from playing with them:
They're 6 pole motors, so 3 electrical cycles per one physical cycle. I've
seen specs that say max speed is 6000 rpm (100 Hz), so that'd be 300 Hz
output from the inverter. I di
Regarding an off-the-shelf VFD for a prius compressor, it would have to be
one that can control permanent magnet synchronous motors with interior
magnets. The TECO drive linked appears to only work in sensorless mode for
induction motors. Open loop V/f would probably make a prius compressor
spin,
I'm on my 4th iteration of air-conditioning scheme. The latest is building
a controller to run a 2nd gen prius a/c compressor. I have a thread going
on DIYecar here:
http://www.diyelectriccar.com/forums/showthread.php/diy-controller-04-09-prius-c-140346.html
It's worked well so far at up to 105F
In Arizona, an evaporative cooler is very effective most of the year and is
ideal for a garage. Even on the hottest days, 95F air out of the swamp
cooler is better than nothing, and you'd still get much cooler air at
night. Or, run the window a/c instead on the hottest/humid days.
http://www.azc
Having been involved with the Open Revolt project, I'm a little biased.
But I think it would be ideal for this project since you would have access
to the source code and hardware schematics. That would allow you to either
modify the software or hardware to suit your needs.
http://ecomodder.com/w
Ben,
Sounds like a fun project that surely would be possible. Probably complex,
but surely possible!
I can comment about owning a conversion in Phoenix as this is the third
summer I've had my EV on the road (http://evalbum.com/2358). My pack is
large, 45x CALB 180's and is in the trunk. I just
Dennis - are you able to get to 50 mph in either 3rd and 4th gear without
over-revving the motor? Is there any difference? If not, you can
eliminate the motor/flywheel. Another option, which I think was mentioned,
would be to produce the problem and then push in the clutch and let the
motor spoo
Oh, sorry - I was addressing the "Dennis" of the original email where he
mentions that the vibration is worse when it is unloaded - See below.
On Mon, Jun 9, 2014 at 12:55 PM, Pestka, Dennis J via EV
wrote:
> The shocks are new, but I'll take a look.
>
> I don't know if this means anything, but
Dennis,
The vibration characteristic you describe is common with involute spline
connections (I've seen this here at work). When splines are loaded, the
male spline is centered in the female spline by the tooth loads.
Run the same set unloaded and this natural centering ability goes away.
Now,
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