Power in Flux

What's on your mind?


Live Feed

flo replied to the thread Desktop CNC anyone?.
" Hi
there was no intention to say anything against your machine or even harm feelings..in the world of cnc even mine is considered a total wobbly thing. Anything weighting under a ton is considered a toy.
I say it again:
Have a look at ESTL cam. it is simply to use, comes with a full set of tutorials on yt, is cheap and free to use at first.

Thing is - to me - using a trochiodal cutting path does not make your project more complex in any way, all of it is just toolpath created by the cam without you doing anything.
BUT as it is (while intimidating when watching first time) far less demanding on your mill-bits and machine you will get excellent results without going through the trouble of finding best speeds for your particular machine. Think of it as simply slicing or shaving off the material sideways (as in a finishing operation), so ESPECIALLY for less rigid machine designs it is far less demanding than otherwise and thus easier to get good results.
Imagine sticking a knife dead straight into the wood, trying to halve it, opposed to shaving off from one side... which will be more demanding on all parameters (strength of blade, your own, speed of cut, debth of cut)?

A Right click on any button will open a explenation of what will happen... so you do not even have to memorise ...

I do create most pockets , cutouts and final outline with it, leaving more or less just drilling and finishing to conventional mill operation.
Saves time, money on bits, and as said there is no additional thing for you to do or learn...

At least , watch the tutorial vids of christian (developer) on yt... there is nothing to loose for you...


flo "

1 Hour Ago

Ted Dillard replied to the thread Desktop CNC anyone?.
Quote Originally Posted by furyphoto View Post
.. I have spent a good chunk of time this week dialing in settings for cutting aluminum on my Shapeoko, ...
Care to share your settings?

We're running a Shapeoko3 as well, I love that li'l thang. "

13 Hours Ago

jhaggerty replied to the thread 1994 Suzuki RF600 Senior Design project Leaf conversion.
" Christmas came early this year yesterday as I heard the rumble of a freight truck outside:


The driver scared me good when he rolled the 600 pound leaf battery onto the lift gate full speed after just having said "man this thing is heavy". I thought I was going to see a good chunk of change end up on the pavement much quicker than it should. With a little help from me and a strap we got the battery up into the garage.


I noticed some damage to the right rear corner, which came into play later when splitting the case. Additionally, the left side vent hole was totally open to the inside of the battery- meaning if these things were sitting outside at the salvage yard someone could get electrocuted... I still have to call the yard to let them know about that/ see what they can do about the damage.


Splitting the case was a bear. I ended up buying an air hammer for $15 from Tractor supply and sharpening the chisel to cut away the gasket around the case. There is a good tall lip to the case, so you don't have to worry about accidentally punching through and hitting anything scary.


When it came time to lift the cover off the damaged corner was stuck, and I realized one of the bolts from the rear battery stack had punctured the case and was getting hung up- another area where the waterproof seal had been breached. Good thing no one bought this to actually put in their car!!



Disassembly was done carefully after checkng the full pack voltage. I removed the service disconnect, which splits the pack into 2x 200V packs. Then unhooked the orange cables from the rear pack to get to one 200V pack still hooked up (the front stacks). Then it was a matter of removing bus bars to keep splitting them up into smaller voltages. I made sure to wrap my tools in electrical tape and wear 500V insulated gloves. They do a fantastic job of keeping all the shocky bits covered in orange plastic, though.

without an engine hoist, getting the modules out was a work of leverage. I used the steel crossbar from the middle of the pack as a lever to lift one 6 module stack up, then snuck a small block under it to keep it high enough where I could undo the terminal covers and bus bars. Once those are off you can unbolt the modules from their stacks and take them out one at a time. This was the same for both sides.

The rear 12 module stack was a real pain. I stopped my timelapse recordings because I realized it would have been a video of me thinking for about an hour and a half on how to get it out LOL! I ended up using leverage to my advantage again. After unbolting all but two of the bolts that hold down the big stack, I rolled the entire battery case end over end onto a piece of plywood with a towel for cushioning. Then I unbolted the last two bolts and used an ATV jack as a dolly to lift the battery case off of the 12 module stack and roll it out of the way.


This may seem like a lot of writing for a simple disassembly job, but the whole process took about 11 hours! I'm no stranger to tools and taking stuff apart, but adding in high voltage and a lack of schematics really slows it all down.
https://www.youtube.com/watch?v=gXC7...ature=youtu.be "

15 Hours Ago

furyphoto replied to the thread Desktop CNC anyone?.
" Thanks, I have a Shapeoko3, which, while not as rigid as a 150KG machine, is actually fairly sturdy for a <> $1000 home CNC. I'm not doing production parts, so I can run it conservatively to get decent cuts. It's accuracy has been impressive (for my needs at least). I have dabbled a bit with Fusion 360, but haven't' had the time to get into it enough to get myself through a project including trochoidal milling. Its next on the list after having figured out some effective speeds & feeds for 6061 on this machine.
I have been using the Carbide Create software. It might be great for making simple 2D cuts of wooden signs and stuff, but it is definitely clunky for complicated CAM and things like finishing paths (requires extra geometry). I'm sure once I get my head around F360, I will never look back. "

1 Day Ago

flo replied to the thread Desktop CNC anyone?.
" Hi
very nice results, especially considering a wobbly cnc like the shapeoko.
regarding toolpath i can highly recomend using trochiodal milling (read up on it) for milling aluminium or steel.
The way it works, its far less demanding on rigidity of ones cnc so it is especially good for hobby/ desktop cnc milling.
Its a lot faster and better for tool lasting on top.
My cnc is not a desktop (appart form general moving gantry desingn) but a 150 kg cnc, still i use the trochiodal approach as much as i can, the results just speak for it.

Rhino plus the cam plugin is what i use but the very cheap ESTL- cam also includes it. (and you can try that for free..).


flo "

1 Day Ago

Richard230 replied to the thread another 6-speed electric motorcycle concept.
Quote Originally Posted by Warren View Post
I guess RIDEOLOGY means shifting gears, and a range of 62 miles. :-(

62 miles at what speed? "

2 Days Ago

Warren replied to the thread another 6-speed electric motorcycle concept.
" I guess RIDEOLOGY means shifting gears, and a range of 62 miles. :-(

https://www.facebook.com/Kawasaki.RI...3765513675134/ "

2 Days Ago

Spoonman replied to the thread another 6-speed electric motorcycle concept.
" There was a faired version of that at Motorcycle Live in Birmingham last year - they had no spec at all to offer at the time.
The uncle is headed over this year so I'll ask him to keep a lookout. "

2 Days Ago

furyphoto replied to the thread Desktop CNC anyone?.
" A quick update, I have spent a good chunk of time this week dialing in settings for cutting aluminum on my Shapeoko, and getting decent results. I still would like to work on my finishing passes a bit, but I am getting nice cuts.
I devised a little self assignment project to work on from start to finish to get my head around the CAD design, CAM tooling, work-holding, and cutting and finishing and engraving within the limits of my desktop machine. Here are the most recent results. Not a motorcycle part, but good practice. Parts coming soon. (not 10 months from now, like since my last post!)


In case you were wondering, this seat-belt buckle looking thing is a tool to remove the battery from a MSA G1 SCBA (Firefighting air pack) so that the proprietary lithium batteries can be replaced while the packs are mounted on the truck without digging out the waist belt, where the built in tool resides. I made these to sit with the spare batteries in the Fire Hall, so that battery swaps can be done easily and quickly without removing the packs from the truck. (and to practice my CNC!) "

3 Days Ago

Richard230 created the thread another 6-speed electric motorcycle concept.
" Looks nice, but why 6-speeds and will Kymco build it for the market or is the Revonex just for showing off the brand?
https://electricmotorcycles.news/kym...llen-ko-video/ "

3 Days Ago

ElMotoMike clicked Likes for this post: I Draw Motos Sketchbook Kickstarter by Alex_J

4 Days Ago

Alex_J created the thread I Draw Motos Sketchbook Kickstarter.
" Hey all, just stumbled on this new kickstarter campaign for a sketchbook for motorcycle design. Definitely aimed at regular combustion engine bike design, but I'd thought I'd share: https://www.kickstarter.com/projects...eference-guide

Might come in handy for doodling your dream EV Moto "

5 Days Ago

jhaggerty replied to the thread Yamaha Fazer.
" I know this is way late, but what type of range were you getting with your 13 leaf modules before the controller blew up? "

5 Days Ago

jhaggerty replied to the thread 1994 Suzuki RF600 Senior Design project Leaf conversion.
" Some updates:

The bike now has over 500 miles on it with an average wh/mile of around 130. Only minor issues so far (crossing my fingers it stays this way) like the chain falling off from being too tight and popping the master.

Since I'm only getting 25 miles per charge and about half the nominal capacity of my pack and I plan to commute to my new job at Chargepoint in San Francisco on this I decided to spring for the new 2018 leaf modules. They are about a 60% increase in volumetric energy density and will put the nominal pack size at just over 11kwh.

I'm having a mystery noise show up every once in a while from a stop to low speed that sounds like something grinding. Hoping it is rear wheel bearings and not something mysterious in the motor, though after a chat with Ed it sounds like these motors are pretty bulletproof (as long as you don't go drag racing pushing 800A through them....)


I've cobbled on a 2004 CBR600RR tail fairing with some slicing and dicing and am planning to add in my J1772 inlet, charger controller and 3.6kw homebuilt onboard charger before moving to San Francisco. The charger is working out quite nicely so far and I have been regularly charging at 30 amps. This probably isn't great for the batteries since it is close to 1C at their real world usable capacity, but I don't plan to have them for much longer and it will be closer to 1/4C of the Gen4 leaf modules.

On a side note I have 10 Gen 4 leaf modules that I would like to sell. They seem to be pretty rare and usually sell at a premium. I don't want to offend anyone with a ridiculous price, but I also need to recoup some $$ before the big move, and the process of buying, shipping, moving, and opening a full leaf pack without a proper shop ain't gonna be easy. Feel free to make an offer if interested. "

5 Days Ago

jhaggerty replied to the thread 2021 Energica models.
" They look awesome. Incredible to me that they fit almost an entire 1st gen leaf size battery in there! (21kwh vs 24kwh in the leaf) "

5 Days Ago

Richard230 created the thread 2021 Energica models.
" Here is the latest from Energica. While the article says they are 2020 models, we won't see them in the U.S. until 2021 considering that the Energica bikes being sold right now are labeled as 2020 models: https://electricmotorcycles.news/ene...my2020-models/ "

5 Days Ago

jhaggerty created the thread 16.6 kwh of Nissan Leaf Gen 4 batteries (2018) 1.66kwh per module lot of 10.
" Hello All,

I will have 10 2018 nissan leaf modules for sale sometime next week (keeping 2 sets of 7 for personal use). These are larger capacity than the Gen2's (56 Ah per cell vs 33 Ah per cell in Gen 2's) and are the same shape. I will have some real world test data on them as soon as I get mine in the RF600 hopefully next week.

Currently the only other ones available are marked for pickup only in Canada on ebay at $500 per module. Make me an offer for the amount of modules you want and I may be able to deliver them if you are on route from New York to San Francisco.

Here's some info:https://pushevs.com/2018/01/29/2018-...ry-real-specs/


James "

6 Days Ago

Spoonman replied to the thread A new Aussie Electric Bike fan.
" Busa is one of my favourite chassis for a conversion - acres of space and a stunning, fully faired, wrapper.

Shall be watching with interest - welcome aboard! "

6 Days Ago

EVcycle clicked Likes for this post: Chinese charging stations by Richard230

1 Week Ago