Search found 13749 matches

by neptronix
Jun 18 2021 7:50pm
Forum: General Discussion
Topic: Lightweighting and aerodynamic optimization of a subcompact car.
Replies: 98
Views: 2071

Re: Lightweighting and aerodynamic optimization of a subcompact car.

Remember, there are multiple small machine shops in every town who will turn up a few parts at prices much more economical than your own lathe + time That's a very good point and instead of investing in $1000, perhaps early production of things can be outsourced at first then moved in-house later. ...
by neptronix
Jun 18 2021 5:56pm
Forum: General Discussion
Topic: Lightweighting and aerodynamic optimization of a subcompact car.
Replies: 98
Views: 2071

Re: Lightweighting and aerodynamic optimization of a subcompact car.

I agree with Chalo. If I was to buy a new small compressor I'd buy the CAT one. The old Atlas lathes are also excellent. Lathes don't so much break as they just get less precise. IMHO even a worn out one would be good enough for what you will be doing. What does that 'less precise' look like? produ...
by neptronix
Jun 18 2021 5:16pm
Forum: Bike Mechanical & Structural
Topic: Quarq Shockwiz
Replies: 5
Views: 181

Re: Quarq Shockwiz

Ah okay a combination shock, i imagine, would have lesser stiction and be nicer on you for sure. Air shocks can get sticky, that's why on front ones i tend to have them set on wimpy air so that they are always a bit compressed the second i sit on the bike. This makes for weak suspension capabilities...
by neptronix
Jun 18 2021 5:09pm
Forum: General Discussion
Topic: Lightweighting and aerodynamic optimization of a subcompact car.
Replies: 98
Views: 2071

Re: Lightweighting and aerodynamic optimization of a subcompact car.

Wow ok. I figured 'decibels per horsepower generated' might be a metric of efficiency and thus maybe longevity as well, which is the main thing that attracted me to the California air tools unit. I don't see any sound dampening features on the unit so that's not the reason. All i know about air comp...
by neptronix
Jun 18 2021 4:30pm
Forum: General Discussion
Topic: Lightweighting and aerodynamic optimization of a subcompact car.
Replies: 98
Views: 2071

Re: Lightweighting and aerodynamic optimization of a subcompact car.

I'm so glad i can come on this forum and get machine shop knowledge too. I haven't stopped learning things here since i joined in 2010 :es: :thumb: Thanks Nicobie and Chalo for your help! How picky do i need to be about compressors? This one is appealing due to it's low noise and high efficiency: ht...
by neptronix
Jun 18 2021 3:05pm
Forum: General Discussion
Topic: Lightweighting and aerodynamic optimization of a subcompact car.
Replies: 98
Views: 2071

Re: Lightweighting and aerodynamic optimization of a subcompact car.

15k RPM is much faster than the Foredom tools I remember using in college. Yeah 15krpm doesn't seem too slow. I can go through half inch steel at a pretty decent rate even with the dremel 4300 at that speed... until the motor burns up :shock: For me, the next step up from a Dremel is a pneumatic di...
by neptronix
Jun 18 2021 1:10pm
Forum: General Discussion
Topic: Lightweighting and aerodynamic optimization of a subcompact car.
Replies: 98
Views: 2071

Re: Lightweighting and aerodynamic optimization of a subcompact car.

A/C or gasohol? Or something else yet? Haha, we're not that far yet.. ...or you fork out for a $500 foredom brand flex shaft grinder setup which is only rated for 1/3rd of a HP and uses a huge and brutally inefficient brushed motor. And they run really slow compared to a Dremel. But they don't over...
by neptronix
Jun 18 2021 12:14pm
Forum: General Discussion
Topic: Lightweighting and aerodynamic optimization of a subcompact car.
Replies: 98
Views: 2071

Re: Lightweighting and aerodynamic optimization of a subcompact car.

Hey all. It's summer here and of course the MPGs are dropping like a stone. I get mid 50's on a good day now.. The air conditioner on the car is weak and runs at a 100% duty cycle and cannot keep up with the ~100F temperatures outside. Typical for a subcompact.. I now realize i made a big mistake in...
by neptronix
Jun 18 2021 11:17am
Forum: Bike Mechanical & Structural
Topic: Quarq Shockwiz
Replies: 5
Views: 181

Re: Quarq Shockwiz

You can do this manually for free very easily. Carry an air shock pump with you, ride, inspect, adjust. After a couple of rounds, you'll have it dialed in well. Now this device would make more sense if you were a bicycle shop and wanted to quickly tune a suspension for a customer. I can see the use....
by neptronix
Jun 17 2021 10:15am
Forum: Forum Rules and Features
Topic: Move to XenForo software
Replies: 53
Views: 2438

Re: Move to XenForo software

Yeah, it's a good balance between mobile/tablet clickability and making good use of desktop space. Here's the 'design language' i've been working on lately: officemanual-2.0.png contractormate-mockup-v2.85.png As you can see, it's less colorful in general.. but the colors are more meaningful and sta...
by neptronix
Jun 16 2021 6:22pm
Forum: EBike General Discussion
Topic: E-bike Achilles heel?
Replies: 21
Views: 397

Re: E-bike Achilles heel?

When considering a protection mechanism, think of this: 1) The bike is useful for parts and does not need to be ridden away or taken whole. 2) Compact lithium powered angle grinders exist. 3) It's safe to assume that nobody cares if your bike is stolen or not. ..that's why i keep my bike in my sight...
by neptronix
Jun 15 2021 11:48am
Forum: Health and Food
Topic: Cured my wife's anxiety and my depression with nutritional supplements.
Replies: 74
Views: 4361

Re: Cured my wife's anxiety and my depression with nutritional supplements.

Do you have fluoride in your water? Also, IMO one cup of coffee a day is too much and more then one teabag a day is too much. I drink one cup of tea in the morning and generally one cup of coffee a week. When I need an energy boost, I like getting an energy boost from apple slices. Oh you're the ki...
by neptronix
Jun 15 2021 11:25am
Forum: EBike General Discussion
Topic: E-bike Achilles heel?
Replies: 21
Views: 397

Re: E-bike Achilles heel?

This is an achilles heel. My solution is to park the bike inside of the business i frequent. If they do not allow it, i won't frequent them. I chose another business that allows my bicycle. Same with my office and warehouse. let me park my bike inside or i don't sign a lease. I managed to find two c...
by neptronix
Jun 15 2021 10:35am
Forum: Forum Rules and Features
Topic: Move to XenForo software
Replies: 53
Views: 2438

Re: Move to XenForo software

Hey PWD, i am also a fan of high density looks. In PHPBB, the theme was actually too dense, and i had to add more spacing in order for it to work on mobile and look good on modern hi-res screens. 2021-06-15 08_59_58-XenForo - Brave.png In xenforo, i have to move things in the opposite direction, but...
by neptronix
Jun 14 2021 11:33am
Forum: Health and Food
Topic: Cured my wife's anxiety and my depression with nutritional supplements.
Replies: 74
Views: 4361

Re: Cured my wife's anxiety and my depression with nutritional supplements.

Green Tea. :bigthumb: The caffeine in green tea is just like coffee and no-doz. I metabolize it so slowly that i build tolerance very rapidly throughout the week. Starting from 1 week of abstinence, my use looks like this: Monday: 2 bags; feel great. Tuesday: 4-5 bags; still feeling good, but not a...
by neptronix
Jun 14 2021 10:29am
Forum: EBike General Discussion
Topic: Well, it finally happened.......
Replies: 59
Views: 1004

Re: Well, it finally happened.......

I'm glad to hear you were wearing a helmet and are in good enough shape to post here after an accident like that.

I wish you the best in your recovery sir.
by neptronix
Jun 14 2021 9:02am
Forum: Health and Food
Topic: Cured my wife's anxiety and my depression with nutritional supplements.
Replies: 74
Views: 4361

Re: Cured my wife's anxiety and my depression with nutritional supplements.

You can scratch considering my previous caffeine withdrawal protocol off your consideration list. I've created a few variants of this protocol using other glandular medicine ( thyroid, pituitary, adrenal, etc ), as well as stimulants that activate other parts of the brain as a means of skirting caf...
by neptronix
Jun 13 2021 11:06am
Forum: Health and Food
Topic: A healthy diet will help us prosper in this pandemic
Replies: 19
Views: 467

Re: A healthy diet will help us prosper in this pandemic

and it is very clear you did not listen to Mic. You can do better than that :roll: I don't, i read research first because people like him just briefly glance at it and start making stuff up. And in this case, predictably, he did. He took a really poorly constructed study about covid-19 severity and...
by neptronix
Jun 12 2021 3:54pm
Forum: Health and Food
Topic: A healthy diet will help us prosper in this pandemic
Replies: 19
Views: 467

Re: A healthy diet will help us prosper in this pandemic

Nope it doesn't. It's very clear you did not read the linked study.
by neptronix
Jun 12 2021 12:36pm
Forum: Health and Food
Topic: A healthy diet will help us prosper in this pandemic
Replies: 19
Views: 467

Re: A healthy diet will help us prosper in this pandemic

The study doesn't actually show that. Here is the full text:
https://nutrition.bmj.com/content/early ... 021-000272

This research did not make a conclusion ( just an association ) and it even included people who ate red meat into the 'plant based' category. :lol:
by neptronix
Jun 12 2021 12:25pm
Forum: Battery Technology
Topic: Thread for new battery breakthrough PR releases
Replies: 1690
Views: 271760

Re: Thread for new battery breakthrough PR releases

Would be nice if we had a technology like that to clean the ocean up for sure! Anyway i read a good one today.. nanograf has 3.8AH 18650's! https://www.greencarcongress.com/2021/06/20210611-nanograf.html Specifications are 'available upon request': https://www.nanograf.com/18650-press-release I sent...
by neptronix
Jun 12 2021 12:22pm
Forum: Vendor Relations Corner
Topic: EM3ev WARNING - abysmal customer support.
Replies: 50
Views: 1721

Re: EM3ev WARNING - abysmal customer support.

cell_man: I have censored the user's email address and full name from the above image ( we now have a rule about exposing a user's personal information without their consent ). I don't think you did this out of malice in any way. The whole outcome of this just sucks and i hope you can find a way to ...
by neptronix
Jun 10 2021 3:05pm
Forum: Motor Technology
Topic: Low Speed, High Torque Hub Motor?
Replies: 11
Views: 258

Re: Low Speed, High Torque Hub Motor?

Vbruun wrote:
Jun 10 2021 1:49am
DD is honestly not suited for this application. It will be needlessly heavy!

Just get a geared hubbie and call it a Day!
Those will burn up even quicker in the wrong situation because they also perform poorly at super low RPM.

let the ebikes.ca motor simulator be your guide to this.
by neptronix
Jun 10 2021 11:57am
Forum: Health and Food
Topic: What did you cook today??
Replies: 288
Views: 38666

Re: What did you cook today??

You cooked and consumed a biblical figure? that's pretty metal.
by neptronix
Jun 10 2021 10:00am
Forum: EBike General Discussion
Topic: The ideal hubmotor
Replies: 16
Views: 559

Re: The ideal hubmotor

To me the ideal hub hub is either: 9C design with 0.27mm laminations and the flattest and tightest windings possible - this could produce a peak of 93% efficiency at best, while also dropping the weight of the motor. Add a cooling solution and this gets even better. Large-ish dual stage geared motor...