Search found 230 matches

by mrzed
Feb 15 2018 2:14am
Forum: Items Wanted
Topic: Anyone want to send me free dead 18650 cells?
Replies: 24
Views: 1161

Re: Anyone want to send me free dead 18650 cells?

OK - I'm surprised none of the senior forum members have yet to chime in on this one but it can't go unsaid any longer. This is what we call a teachable moment. To be clear - this is no personal attack - so please don't take it as such. Any sarcasm (of which there will be much) is solely intended to...
by mrzed
Jan 20 2018 11:04pm
Forum: E-Bike General Discussion
Topic: Sortimo electric cargo trikes
Replies: 27
Views: 1266

Re: Sortimo electric cargo trikes

In the end, it doesn't matter what direction you point the triangle and how you suspend it, it's still going to be less capable of leaning into the turn than 2 wheels and less stable off camber than 4. I'm no engineer, but this just seems like geometry.
by mrzed
Nov 29 2017 10:44pm
Forum: Electric Watercraft
Topic: Help Needed with Fastest possible Electric JetSki Conversion
Replies: 7
Views: 1756

Re: Help Needed with Fastest possible Electric JetSki Conversion

Yup, water cooled is the trick, and there's not much out there. Someone with skills and tools could come up with badass custom heat exchange setup to properly cool a suitably powerful electric motor. doubtless someone already is, and it will be released in a year or two by an existing oem like bomba...
by mrzed
Jul 28 2017 11:53pm
Forum: Large EV General Discussion
Topic: Bollinger SUT
Replies: 25
Views: 1811

Re: Bollinger SUT

Saw that earlier today. Love the overall approach of using high tech where it matters in the drive system, and low tech when it comes to the 'car as living room' aspect of automotive design. I'm not so keen on the total lack of aerodynamic consideration -seems a bit of a miss. Forgivable if the poin...
by mrzed
Jul 28 2017 5:34pm
Forum: Large EV General Discussion
Topic: Buying used Leaf in USA - general advice?
Replies: 1
Views: 472

Buying used Leaf in USA - general advice?

The family is taking a trip this August to see the eclipse in Oregon, then to the dunes and redwoods before heading back up to Canada. I'm now convinced this is the time to bring back an off lease Nissan Leaf with us. From what I can tell - prices on used Leafs in the USA are 4-5K lower than in Cana...
by mrzed
May 26 2017 10:42pm
Forum: E-Bike General Discussion
Topic: Bicycle Conversion Recommendations
Replies: 33
Views: 3312

Re: Bicycle Conversion Recommendations

I have no horse in this race so to speak, but i think you should seriously consider the Kepler drive. Do a search here if you haven't already. It would be quite a bit more appealing to someone who just wants a boost. San Diego is relatively dry and flat. You can go with super light battery or double...
by mrzed
Apr 07 2017 11:50pm
Forum: EV Business World
Topic: TESLA JUST PASSED GM AS THE MOST VALUABLE CAR COMPANY
Replies: 17
Views: 1815

Re: TESLA JUST PASSED GM AS THE MOST VALUABLE CAR COMPANY

I'm surprised there is no mention in this thread that tesla's value is not just that of a car company but a big data company. Every model s and x out there is gathering what is likely by far the most comprehensive database on real world driving conditions and telemetry, providing tesla with a big ad...
by mrzed
Feb 01 2017 1:02am
Forum: Electric Watercraft
Topic: 24 Volt Trolling Motor Battery Build/Questions
Replies: 3
Views: 865

Re: 24 Volt Trolling Motor Battery Build/Questions

Use 7s. Safe replacement for 24v lead and the bottom is still well above the average for the 24v lead if you are looking to boost power. If the standard power for the motor is enough for you then it's worth considering 6s even, so you can use a standard hobby charger.
by mrzed
Nov 01 2016 10:37pm
Forum: General Discussion
Topic: Fisker to restart production !
Replies: 11
Views: 1242

Re: Fisker to restart production !

The claim to be patenting graphene supercapacitors smells like vapor marketing to me
by mrzed
Oct 23 2016 11:51pm
Forum: Items for Sale - New
Topic: CHEAP NEW ORIGINAL CELLS LI-ION 18650
Replies: 709
Views: 159847

Re: NEW CELLS 18650 SAMSUNG/SANYO/PANASONIC/LG 2900-3500mAh

I ordered from tumich last year and no problems. It's up to you if you want to take the risk of shipping without insurance as stated clearly.
by mrzed
Oct 22 2016 12:12pm
Forum: Battery Technology
Topic: 14S cordless tools on a 14S ebike pack
Replies: 10
Views: 1306

Re: 14S cordless tools on an ebike pack

The newer higher end >40v yard tools almost certainly come with controllers with temperature monitoring and roll back or shut off. Even my much older solaris 24v mower that i converted shuts itself down if I get too much clumping of wet grass. I just got the ego 15 inch string trimmer and hedge tool...
by mrzed
Oct 19 2016 11:42pm
Forum: E-Bike General Discussion
Topic: Fifield Inc.
Replies: 3
Views: 277

Re: Fifield Inc.

Why they would put such a pimple of a generic bottle battery on a lovely steel frame boggles me. Especially when shelling out for the alfine 11. And at 5500 to boot.
by mrzed
Oct 15 2016 6:48pm
Forum: Items for Sale - Used
Topic: Parting Out My Grin Technologies Dahon Build
Replies: 3
Views: 646

Re: Parting Out My Grin Technologies Dahon Build

Where you located? I'll take everything but the motor.
by mrzed
Sep 25 2016 11:24pm
Forum: Items for Sale - New
Topic: Cnc Service For ES members just add front bat brackets
Replies: 27
Views: 3203

Re: Cnc Service For ES members just add front bat brackets

I like the holders, though that pack wiring seems to have really uneven current sharing.

I like 7s layout as it seems a rewlly good pack size for longer range packs. What's the length and width for a 7s14p on the holder?
by mrzed
Sep 12 2016 11:25pm
Forum: E-Bike Non-hub Motor Drives
Topic: Would this pinion with rim-rack drive idea work?
Replies: 8
Views: 737

Re: Would this pinion with rim-rack drive idea work?

Seems like it would be hard to manufacture. UHMWPE does not deform easily, which is the point. So how are you going to radius a strip of milled material to the diameter of a bicycle rim? You could mill the curve itself out of a larger block but that's going to be harder and burn a lot of material. I...
by mrzed
Sep 12 2016 5:21pm
Forum: Battery Technology
Topic: 14s7p Panasonic PF build - current sharing advice
Replies: 0
Views: 325

14s7p Panasonic PF build - current sharing advice

I'm about to start on my third battery build. First was a recycled toolpack cells from Makita packs long ago that I put together for my lawnmower. I learned there that even if it was OK to solder cells, I'm nowhere near good enough at soldering to make it OK for me. I also learned I don't have the t...
by mrzed
May 21 2016 2:08am
Forum: E-Bike General Discussion
Topic: Airbus subsidiary APWorks 3D Prints ebike
Replies: 13
Views: 1402

Re: Airbus subsidiary APWorks 3D Prints ebike

Lock, how you manage to post all these awsome finds over all these years amazes me. Kudos, this is one of the best yet. To all those who may gripe at the list price, some of the ultra - rich will always buy hugely expensive toys , isn't 35kg of expensive metal and rubber a less gratuitous luxury.? I...
by mrzed
Oct 26 2015 9:53pm
Forum: Battery Technology
Topic: 10s3p best 5x6 layout for current sharing?
Replies: 5
Views: 625

10s3p best 5x6 layout for current sharing?

Hi, I'm getting set to build up my first battery with the JP spot welder. This one will be a 10s3p mini pack using panasonic 2.9Ah PF cells, and I'm planning on a 5x6 rectangular layout, partly to make a nice compact shape that can fit in a seat bag, partly because I got the batteries (from Tumich) ...
by mrzed
Oct 26 2015 12:21am
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1127
Views: 140823

Re: JP spot welder

Jakov, I finally set up the welder and tried a couple test welds on old cells. I'm very impressed with the quality. Thanks for providing this kit as it allows us non-technical people to finally build a proper battery.
by mrzed
Oct 01 2015 1:10am
Forum: EV Business World
Topic: Is there room for a new electric bicycle company in the US?
Replies: 18
Views: 2331

Re: Is there room for a new electric bicycle company in the

Ebikes will take off in North America, but when is the question. The latest crop of demi - adults is far less interested in cars than the generations before thankfully, but current ebikes are still hitting it off mainly with nerds, seniors and DUIs. Style is a big part of that. I think what the mark...
by mrzed
Sep 26 2015 2:14am
Forum: General Discussion
Topic: Discussions aren't the same quality without Chalo
Replies: 45
Views: 2439

Re: Discussions aren't the same quality without Chalo

Welcome back. As a perpetual noob when it comes to the E of ebikes, but one who's been rebuilding and maintaining a bicycle as my primary transportation most of the last 30 years, I can attest that you're clearly a top flight bike mechanic who has been most generous with his time here and someone wh...
by mrzed
Sep 20 2015 12:45am
Forum: Alternative Energy
Topic: Solar PV Will Be Cheapest Form Of Power Within A Decade
Replies: 4
Views: 1054

Re: Solar PV Will Be Cheapest Form Of Power Within A Decade

I think this solar project at $64/MWh flat for 20 years is already close to the cost of "brown power" over it's life. http://azusa.granicus.com/MetaViewer.php?view_id=2&clip_id=574&meta_id=42938 Does it produce power at night? You working for big oil? Signing on to forums to rag on renewables by po...
by mrzed
Sep 20 2015 12:13am
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1127
Views: 140823

Re: JP spot welder

I've been wondering about this. I'm a newb/hack with basically no electronics experience or skills. Still, just got my welder, and I would've thought it would be much easier to solder the balance wires on before spot welding the pack together.
by mrzed
Jun 03 2015 8:30pm
Forum: E-Bike Technical
Topic: Building a 72V ebike
Replies: 6
Views: 946

Re: Building a 72V ebike

Do the laws in Belgium allow you to run those speeds? I'm pretty much a libertarian but if my employment depended on running an illegal vehicle through a major metropolitan area I'd think twice. This from someone who regularly commuted on a technically illegal vehicle. You can more easily get away w...
by mrzed
May 22 2015 11:45pm
Forum: General Discussion
Topic: Burning Man Electric Couch.
Replies: 22
Views: 2190

Re: Burning Man Electric Couch.

Thanks for this one. I got a big laugh at the 30mph couch line. Please wear excellent gear and find a good empty road if trying it out at those speeds. And get video.