Power in Flux

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ByronDonald replied to the thread More amps or more Volts?.
" Hi...the VRM actually is really sophisticated piece of silicon. It has many mojo's to keep VRM cool at each VID step. Actually the power range doesn't matter as long everything is cool. Thermal instability usually is the biggest concern only some bloopers in misaligned thermal pads or some sort of flaws like that. For such small currents actually there should be no problems... imagine firing up some few kW water pumps with huge startup up currents using same basic principles and it works actually. "

10 Hours Ago

Spoonman clicked Likes for this post: SRF = Scary Ridiculous Fast by zeroEmissins

11 Hours Ago

Richard230 replied to the thread Zero SR/S preview.
" And now we have an "exclusive" review of this new model: https://www.motorcycle.com/manufactu...irst-ride.html "

1 Day Ago

aggrc clicked Likes for this post: SRF = Scary Ridiculous Fast by zeroEmissins

1 Day Ago

zeroEmissins created the thread SRF = Scary Ridiculous Fast.
" My son and I share an SR-F.
Very impressed with the leap Zero made with the SR-F.
I had ridden a demo SR and was blown away by the acceleration and impressed by the build quality.
But when the SR-f came out, that bike was a quantum leap in sophistication.
When I first cracked the throttle full on I thought I was having a heart attack.
Less than 400 miles so far but continue to be impressed. "

1 Day Ago

Stevo replied to the thread Pursang electric motorcycles.
" I like the old school café look. "

2 Days Ago

Stevo clicked Likes for this post: Ultracapacitors again by Spoonman

2 Days Ago

Spoonman clicked Likes for this post: Pursang electric motorcycles by Richard230

2 Days Ago

Spoonman replied to the thread Ultracapacitors again.
"
Quote Originally Posted by togo View Post
"decreases their capacity?" how so?
Series capacitance == (C1*C2)/(C1+C2)
--> If C1=C2=1e-3F, when arrange in series the capacitance of the network becomes 5e-4F (half of the capacitance of either one, but with twice the rated voltage).

Capacitors in parallel simply add up, but the rated voltage remains unchanged. "

2 Days Ago

Richard230 clicked Likes for this post: Trying to buy an Emrax 228 by PaulWay

3 Days Ago

PaulWay replied to the thread Trying to buy an Emrax 228.
"
Quote Originally Posted by PaulWay View Post
OT1H yes - I'm not going to contact them until well into the new year (I'm away for a bit for other things).
I got in contact with them, and for some reason their emails, which had come through at first, were now being silently discarded somewhere in my email system. So I gave them an alternate email address, and we've completed the order now! So hopefully in a month or two I'll be getting a new Emrax 228!

Have fun,

Paul "

3 Days Ago

Richard230 created the thread Pursang electric motorcycles.
" These Pursang electric motorcycles from Spain look interesting: https://electricmotorcycles.news/pur...rth-of-a-myth/ "

3 Days Ago

nedfunnell replied to the thread Spaceweasel's GSX-R conversion for sale.
" No price? "

4 Days Ago

Ted Dillard replied to the thread Zero SR/S preview.

4 Days Ago

Spaceweasel replied to the thread Spaceweasel's GSX-R conversion for sale.
" Bump! I 'd rather sell all this together to someone who wants to build their first conversion than split it up into parts. Contact me with questions, or if you are near Denver I will buy the first round. "

4 Days Ago

Richard230 replied to the thread Zero SR/S preview.
" Apparently, Zero has been running around asking some sites and individuals to deleate the news about their new SR/F model, since it was apparently leaked without their permission. They seem to have done that to the electric motorcycles news article that I linked above. On the other hand they don't seem to have had much luck removing the YouTube video that Ted posted. You know what the internet is like. Once it is out there you never get it back. "

4 Days Ago

ElMotoMike clicked Likes for this post: Zero SR/S preview by Ted Dillard

5 Days Ago

Richard230 replied to the thread Zero SR/S preview.
" Here a photo of the side view. And I agree this Zero does finally look like a real sportbike. Better dressed than naked https://electricmotorcycles.news/fir...new-zero-sr-s/ "

5 Days Ago

Ted Dillard created the thread Zero SR/S preview.
" I knew if I waited long enough Zero would make a bike that looked like a proper motorcycle.

https://youtu.be/Vg_GpxLmIdQ

now GET OFF MY LAWN! "

5 Days Ago

Richard230 created the thread A piece of Zero history.
" Attached is the first review that I can recall seeing of the 2010 street-legal Zero lineup as published in the November 2010 issue of Motorcycle Consumer News. "

6 Days Ago