E.S. Quotable Quotes !

Elmweavers Last words:

http://endless-sphere.com/forums/viewtopic.php?p=583&highlight=#583
 
^^^ :lol: ^^^

(Yup, I did remember them correctly.)





:D
 
Ypedal said:
Fechter
"The hysteresis should hopefully keep it from going into oscillation when the first cell reaches the trip point. If you want it to latch, you could add a SCR to shunt the zener. "

pff... is that all we have to do ?.. :)
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If I hadn't hung around here for awhile, I would be totally clueless (as opposed to half clueless).
 
Ypedal said:
Ypedal ? .. well because sometimes you should ! hehe.. 8)
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:lol:
 
TylerDurden said:
xyster said:
... you could do something to delude yourself into believing you really were going 80mph -- might be cheaper, you know, and just as satisfying. :)
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One of our members uses spreadsheets. :D
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That's "Safe"ty in numbers for ya! :)
 
Miles said:
safe said:
:arrow: Ice Kissing will work, the math says so.
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http://www.teslamotors.com/blog2/?p=30

Also by my estimates induced currents in a rotor have to be 10000 to 30000 amperes and rotor heat production should be ~1 - 2 kWt at maximum torque. This implies that some air pump have to push air along the motor axis at ~100 liters / sec speed at least. Low weight of a motor means that stator coils are reduced against optimal efficiency making motor loose efficiency from typical 98 % ballpark down to 90 % ballpark. Heat production pressure inside inverter and inside stator has to be higher than typical so I guess ~10 kWt in stator and ~5 kWt inside inverter. So they get ~15 kWt of heat losses for top power. Typical motor + inverter would have ~5 kWt losses for the same power.

Loss of motor efficiency is unavoidable to reduce weight of the car to get its sporty performance. Typical weight for ~200 kWt motor I think would be 200 - 400 pounds versus 70 pounds of Tesla Motors design. Not surprising they sound proud of the motor they created for mass production. It is the first motor I know pretending for mass production and having intense cooling fluid pumping to remove heat losses - somewhat of typical ICE cooling system but used for electric motor.
 
Spray cooling has profound cooling implications with COTS electronics and has been proven successful by the Navy with electric motors. The Internal Injection Method is one spray cooling methodology that demonstrates thermal improvements of up to 1600%.

http://www.cotsjournalonline.com/home/article.php?id=100289

cots0311_ts_2_1.gif
 
SatCon Applied Technology, Inc., a subsidiary of SatCon Technology Corporation, (Cambridge, MA), funded by the BMDO (now Missile Defense Agency) to study advanced technology for cooling motors, may have found the answer with its passive phase-change cooling techniques. By using a patented "pumpless" method of moving liquid coolant through its stator windings, with very little extra weight or expense, an induction traction motor that normally has a maximum power output of 50 kilowatts can be modified to operate at a maximum power output of 100 kilowatts (about 130 horsepower).

http://www.mdatechnology.net/outreach/tech_update.aspx?art=4201

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"People that quote them self are not quoting any thing at all"
oh wait That is my quote......LoL






get it? :mrgreen: :lol: :wink:
 
mr_exon said:
"People that quote them self are not quoting any thing at all"
oh wait That is my quote......LoL






get it? :mrgreen: :lol: :wink:
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:lol: :lol: :lol: ... I got it!

It is a sad thing when a person loves the sound of their own voice so much that they feel the need to quote themselves. :roll:
 
Link said:
disadvantage said:
Buying cheap means buying twice.
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So true. Unless you know how to upgrade :twisted:.
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LoL, that reminds me of the time I bought controller after controller from a china parts place in Tennessee :roll:
 
"The lesson is that it's not a good idea to drink, it's not a good idea to be high on dope, and it's not a good idea to taunt a man-eating tiger."
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S.F. zoo spokesman, Sam Singer


http://news.yahoo.com/s/ap/20080119/ap_on_re_us/tiger_attacks




I know, it's not an ES comment; but hey... say it ain't words to live by.

:?
 
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