Power in Flux

What's on your mind?


[140]

Live Feed

EVcycle clicked Likes for this post: The Juiced Drag bike progress post by cmcnall

19 Minutes Ago

Stevo clicked Likes for this post: The Juiced Drag bike progress post by EVcycle

3 Hours Ago

Stevo clicked Likes for this post: The Juiced Drag bike progress post by frodus

3 Hours Ago

Stevo replied to the thread Alta Shutters.
" I contend that its ALL because of battery tech... we just aren't there yet!
I know the world's brightest minds are working on this, and I truly believe the next gen battery will kick gasoline's ass.

It also seems like HD was just extracting what they could at Alta's cost. "

3 Hours Ago

Stevo replied to the thread Should you have a mechanical, manual pack disconnect?.
" You gotta love the simplicity and elegance of the BMW's solution, IMO. By far the best design. "

4 Hours Ago

Stevo clicked Likes for this post: Should you have a mechanical, manual pack disconnect? by Ted Dillard

4 Hours Ago

Stevo clicked Likes for this post: Should you have a mechanical, manual pack disconnect? by Ted Dillard

4 Hours Ago

Ted Dillard replied to the thread Should you have a mechanical, manual pack disconnect?.
" "Any number of things can happen to that switch!"?

ANY NUMBER OF THINGS? LIKE WHAT THINGS???

lol you should know better than to give me a shot like that.



Also, check out the post above. I found the mother lode of emergency disconnect switches. "

4 Hours Ago

Stevo replied to the thread Should you have a mechanical, manual pack disconnect?.
" That was a good find Sherlock.... I didn't get that far on my google search.
Ya... I have to agree, You should never assume that power is off just because a switch is flipped. Any number of things can happen to that switch!

I've been reading through these posts to double check everyone's suggestions and I respect Travis's opinion... I will be relocating my main fuse to a safer location, but also to a location that has easier access than where it's located now, which is on the Sevcon controller itself. If that fuse blows, It's near impossible to get to in order to change it. If you read Travis's opinion, for this system, a full current flowing switch is not necessary. And Jackson type plugs is a mere convenience. My battbox is such a pain in the ass to remove, a quick disconnect plug isn't going to help save much time in that procedure.

The main thing I hate about those Jackson plugs, is that they are not the least bit water proof. I usually squeeze a shit ton of silicone grease into the connections before I snap them together. The grease also helps pulling them apart, which sometimes can be a pita. "

4 Hours Ago

Stevo clicked Likes for this post: Should you have a mechanical, manual pack disconnect? by Ted Dillard

4 Hours Ago

Ted Dillard replied to the thread Should you have a mechanical, manual pack disconnect?.
" I just hit the mother lode: https://advancedextrication.com/2014...y-disconnects/

Lists the Service and Emergency disconnects for several cars. "

6 Hours Ago

Ted Dillard replied to the thread Should you have a mechanical, manual pack disconnect?.
" So, since Tesla was brought up in StevO's build thread, and I've been minding the phones in the office, (ie, bored AF) I did a little of the ol' Googlin'. Tesla has a page for Emergency Responders, and here's the sheet on the Model S: https://www.tesla.com/sites/default/...e_Guide_en.pdf

ERs are instructed to cut the "Front Trunk First Responder Loop", which is a low voltage harness which "shuts down the high voltage system outside of the
high voltage battery and disables the SRS and airbag components". They're also advised "Regardless of the disabling procedure you use, ALWAYS ASSUME THAT ALL HIGH VOLTAGE COMPONENTS ARE ENERGIZED! Cutting, crushing, or touching high voltage components can result in serious injury or death."

So, not sure what to conclude there. They don't have a manual disconnect, are disconnecting the HV at the battery using contactors, yet they more or less admit that might not work. "

6 Hours Ago

Richard230 replied to the thread Alta Shutters.
" Well, that is sad but seems to be typical of an electric motorcycle startup company. The all seem to start up with a good design plan and a hopeful business plan that just can't be supported by sales alone without large and steady infusions of cash until the electric motorcycle market starts growing. And the way things are going, that might take a long time. Just take a look at the brands specifically listed in the sub-forums on this site. How many of those brands are still in existence? They couldn't even find a Chinese company to buy them. I hope Alta (located about 15 miles from my home) can recover, but finding loose cash is getting tough in today's economy.

In other distantly-related news, my oldest granddaughter is attending the Freie University in Berlin for the next year. She takes public transportation as well as walks to her classes from her off-campus dorm. While walking to class earlier this week, she took the attached photo of a Zero rider at a stoplight. What are the odds of that happening just as she was walking by? Fortunately she was able to recognize what looks like a 2014 Zero S as her mother has one exactly like that. It even with the same Givi top box. I bring this up as I believe that the real electric motorcycle market lies in the European Union and not in the Americas for at least the next ten years - in spite of all of our politicians proclaiming otherwise.

I might add that when I purchased my Zero, California gave me a $900 rebate for buying an EV. Now starting next year, the state will be charging me an additional $100 a year for registering my Zero, along with the standard, original-price-based registration fee ($230 this year), just because there are so many perceived rich people owning Teslas who the politicians feel are not paying their fair share to pay for road maintenance by not having to pay gas taxes. And my electric motorcycle got scooped up in the rush to extract money from "rich" EV owners. That is doing nothing to grow the EV market and especially not the electric motorcycle market which is already suffering under the burden of high purchase prices. "

7 Hours Ago

Ted Dillard replied to the thread Should you have a mechanical, manual pack disconnect?.
" @StevO - OK, so basically we disagree on only one point, that an off-road motorcycle, well, I'd argue any motorcycle, is hazardous enough to make a $40 cutoff prudent. Or not. "

10 Hours Ago

Ted Dillard created the thread Alta Shutters.

10 Hours Ago

frodus replied to the thread The Juiced Drag bike progress post.
" One thing to realize, is that the controller max stator amps is 660A. And the 475A is likely battery side. They won't ever be the same. The controller is a bit like a gear converting one RPM/Torque to another. The controller converts one voltage and current out to a modulated 3-phase voltage and current. They won't likely equal often, if at all. So if 475A is battery side, you are not likely going to ever see 660A at the battery, but because it amplifies current, it can push many more amps out on the stator. "

17 Hours Ago

cmcnall replied to the thread The Juiced Drag bike progress post.
" Based on my experience with my 96V gen 2 Chevy volt packs, you may top out at around 500-515 amps without going parallel. They don't overheat, just that's about max current draw that I have been able to eek out.
If you end up getting more let me know, in either case I have been super impressed with the volt cells and construction in general.

Quote Originally Posted by EVcycle View Post
We finally got to go test. Had a great time, the bike ran flawlessly.

We were running 475 of the 660 available amps..
"

22 Hours Ago

cmcnall replied to the thread Should you have a mechanical, manual pack disconnect?.
" I have an estop with a overcurrent magnetic blowout on the negative side and an LEV200 on the positive side. I will say that when I have accidentally had the bike go into uncontrolled acceleration when messing with settings that e-stop sure is more handy then turning the key to off. Second it is easier to store the bike for the winter. Hit the estop and disconnect the balance connectors and I'm done. "

22 Hours Ago

Stevo clicked Likes for this post: KwSAKI Mk1 (Ex 500) by aggrc

1 Day Ago