Search found 1057 matches

by LewTwo
Mar 29, 2018 8:52 pm
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

I have a part that is a bit larger than my Creality Ender-2 can print and buying another printer seems a bit extreme. So I started looking for 3D printing services ... again.I ran across 3D HUBS which lists various 3D printing services as well as CNC and injection molding. Much better prices than th...
by LewTwo
Mar 25, 2018 10:01 am
Forum: E-Bike Non-hub Motor Drives
Topic: Help please, my bbs02 750 is stuck in my frame
Replies: 18
Views: 447

Re: Help please, my bbs02 750 is stuck in my frame

That looks like the rust might have 'bonded' the parts together.
If it has then the only option may be some more cuts and 'peeling' the BB away.
Since you now have the BB split, I would try the torch again and hope heat applied to the frame would cause uneven expansion to break the bond.
by LewTwo
Mar 24, 2018 12:22 pm
Forum: E-Bike General Discussion
Topic: Found/Abondoned Bicycles
Replies: 19
Views: 824

Re: Found/Abondoned Bicycles

Locks only keep honest people honest.
by LewTwo
Mar 24, 2018 12:08 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Help please, my bbs02 750 is stuck in my frame
Replies: 18
Views: 447

Re: Help please, my bbs02 750 is stuck in my frame

Dremel (or similar) equipped with a grinding disk and split the bottom bracket along the bottom.
by LewTwo
Mar 18, 2018 9:31 pm
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

... Do you have any trouble hitting the proper dimensions for a good fit? I printed a "gauge" first in order to select the proper hole size. https://www.thingiverse.com/thing:2809401 ... Good solution for your printer and plastic. The problem with this solution is that the calibration may vary with...
by LewTwo
Mar 12, 2018 9:34 am
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

I took the liberty of fixing the typo in the print volume. Thank thee What plastic are you printing the battery holders in? “Paramount 3D ABS (PANTONE Battleship Gray 431C) 1.75mm Filament” https://www.amazon.com/dp/B01M4S20QG Do you have any trouble hitting the proper dimensions for a good fit? I ...
by LewTwo
Mar 12, 2018 3:12 am
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

So getting back on topic …. The OP, Spinning Magnets, originally posted the question regarding CAD/CAM software along with the example of designing a modular cell holder to be assembled into a battery frame. I finally got a 3D printer and decided to take a shot at that task. The printer I purchased ...
by LewTwo
Mar 12, 2018 1:58 am
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

Undoubtedly that was the reason, and 1/4-20 is the camera mount, so that's reasonable though surprising on a bicycle where even in the USA the threads are metric. As is 3/8-16. Among the few english/british standards that have not been replaced by a metric equivalent because there are far too many ...
by LewTwo
Mar 08, 2018 4:17 pm
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

The CAD machines that it took to run Solid Works and before that HP CAD were vastly more expensive than a SpaceMouse anyway. There once was a congressman that made the statement: "A million here, a couple million there and pretty soon you are up to real money" . There are NO insignificant cost when...
by LewTwo
Mar 08, 2018 4:04 pm
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

No, these: https://www.3dconnexion.com/products/spacemouse.html Looks like they use it in addition to a mouse. As the IT manager I was somewhat prejudice against those. It was possible that the CAD operators might find them more productive. However any cost savings went into the project manager's b...
by LewTwo
Mar 08, 2018 3:51 pm
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

Someone told me a few years ago that there's a much better "mouse" for CAD work, some kind of positioning device with more degrees of freedom. Mice are just too limiting. I don't recall what it was called. Sounded like a cross between a joystick and a trackball. I think it was something like the "S...
by LewTwo
Mar 08, 2018 3:06 pm
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

I withdraw that objection to FreeCAD but I still have others ... principally the lack of 3D DWG/DXF support. I not saying it is a bad package but it does not suit my requirements. ... moving on
by LewTwo
Mar 08, 2018 2:53 pm
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

Right mouse click on your work space opens "Navigation style>", choose "Blender". Now, if you "click and hold scroll wheel" on the mouse, you rotate the workspace around the point you clicked (kind of) with moving a mouse on the pad. Leave the scroll wheel when you found desired view. Nope all I ge...
by LewTwo
Mar 08, 2018 12:14 pm
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

What do you mean exactly? I use blender mode with scroll wheel to adjust the viewing angle and you can chose between Orthographic and Perspective view for isometric. Do you have some link to function you miss, where it is explained? "Blender" mode? Not found that. The only thing the scroll wheel do...
by LewTwo
Mar 08, 2018 2:59 am
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

One of my main problems with FreeCAD is as far as I can determine the UI is limited to viewing from one side of the virtual box --- no oblique views other than the built in isometric. Adequate for a lot of uses but I am spoiled by having spent so much time on systems that do not have that limitation...
by LewTwo
Mar 07, 2018 4:56 am
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

Perhaps something like Fusion360 would allow you to convert to a more portable format? Then you could move them into FreeCAD? After years of dealing with MS operating systems I was able to move to Linux when I retired ... I will never downgrade. Also I am spoiled by a much more capable system ( wit...
by LewTwo
Mar 06, 2018 8:44 pm
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

My mechanical CAD experience doesn't go back very far, but I started in Computer Science long, long ago. Before they had a name for it, as I recall. We let the mechanical engineers do the CAD part of the projects. I went the opposite direction Drafting (pushing a pencil across a pieces of vellum) t...
by LewTwo
Mar 06, 2018 8:14 pm
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

Both DXF and DWG are Autocad formats, very old, with 3D added later. More modern formats such as STEP might be a better choice for interchange. You are probably correct about that but I have DWG files going back three decades. I am too lazy to start over. IGES would be a good alternative as well. O...
by LewTwo
Mar 06, 2018 7:25 pm
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 117
Views: 4787

Re: The ebike parts designing thread with CAD/CAM

I guess I am too old a dog to learn new tricks. I started using Hogin CAD (not even sure about the spelling at this late date) back in the early 1980s on an HP1000 mini computer. Then I started using one of the earliest versions of AutoCAD on a 8086 MS-DOS computer ( with a full 640K of RAM ! --- WO...
by LewTwo
Feb 25, 2018 11:20 am
Forum: E-Bike General Discussion
Topic: Advice on my first build: DD rear hub 48V 1000W
Replies: 35
Views: 1988

Re: Advice on my first build: DD rear hub 48V 1000W

"... direct drive Brushless Geared ..." Chinglish
by LewTwo
Jan 25, 2018 11:18 am
Forum: E-Bike Technical
Topic: Using the Wangdd22 1500W 30A DC Boost Converter on an ebike
Replies: 112
Views: 6253

Re: Using the Wangdd22 1500W 30A DC Boost Converter on an e

Buk___ wrote:
Jan 25, 2018 5:12 am
I haven't found one to purchase yet :(
Minor technical issue ... I have the very same problem with dilithium crystals and neutronium.
by LewTwo
Jan 15, 2018 4:04 am
Forum: E-Bike General Discussion
Topic: Speak French?
Replies: 16
Views: 468

Re: Speak French?

MadRhino wrote:
Jan 14, 2018 9:34 am
Wind power is not reliable.
Locate the windmills in close proximity to the politicians. There will be no shortage of hot air.
by LewTwo
Jan 15, 2018 3:58 am
Forum: E-Bike Technical
Topic: Repair to bent rim. Advice and help pls
Replies: 20
Views: 576

Re: Repair to bent rim. Advice and help pls

Chalo wrote:
Jan 15, 2018 1:56 am
Take the wheel back and demand that they tighten the spokes to 1000 newtons. That's the least they can do after charging you full price.
AMEN
by LewTwo
Jan 08, 2018 2:55 pm
Forum: E-Bike Technical
Topic: Using the Wangdd22 1500W 30A DC Boost Converter on an ebike
Replies: 112
Views: 6253

Re: Using the Wangdd22 1500W 30A DC Boost Converter on an ebike

Well I ordered one as well but I ordered from ebay to be delivered via slow boat from china ... I am in no hurry as I already have enough projects on the back burner ( I need to get more back burners ). https://www.ebay.com/itm//172996341616 31 Days via ebay ($24) and a 'slow boat from china". Exce...
by LewTwo
Jan 02, 2018 7:19 pm
Forum: E-Bike Technical
Topic: portable air compressors for tires
Replies: 125
Views: 3843

Re: portable air compressors for tires

or you could just choose the compressor you want and use a voltage converter:
https://endless-sphere.com/forums/viewt ... =2&t=90369

The advantage of a 12 Volt is that you can steal power from a four wheeler in needed :D