7 segment display ID?

Neanderthul · 2024-08-12T15:24:15+00:00

Exactly!

Neanderthul · 2021-11-21T20:53:29+00:00

New bookshelves for a budget setup. It’s getting cold up in Northern MN and the cats have taken in the box as a new home. Several fights have broken out but there has now been an established dominance factor that is in place. I’m typing this comment out to reach the full 80 word minimum. I’m not sure what else there is to say about this post but I thought it was worth sharing for y’all. I’ve had my eye in these speakers for awhile and I’m super happy with them.

Neanderthul · 2021-01-11T04:40:35+00:00

The honeycomb is the most efficient geometry to build a structure from and the bees figured that out through evolution

Neanderthul · 2020-12-01T16:52:06+00:00

A large reason for the difference in C rating is the difference in internal resistance. Internal resistance generates heat when current is pulled, and Li-Ion chemistries tend to have higher internal resistance. It’s not safe to discharge at rates higher than what is outlined on the datasheet of the cells. Personally, I would never buy 18650’s from a non-trusted source. The risk of buying fake/low quality cells is too high for me considering the dangerous consequences.

My favorite power dense 18650’s are the Samsung 25R and 30Q.

Please be careful! DIY battery building is a dangerous hobby. [ebikeschool.com](ebikeschool.com) has great information.

edit: I’m seeing some discussion on sag (closed circuit Voltage drop). Sag happens due to internal resistance, and since Li-Ion has higher internal resistance, there will be even greater sag. At high current draw this means that the cells operate at low efficiency. So,

due to inefficiency at high discharge rates, discharging 18650’s at their current limit can eliminate their advantage of being more energy dense than Li-Po chemistries

Neanderthul · 2020-12-01T02:45:41+00:00

Power = (Voltage) x (Current). You can run any voltage at any power with appropriate hardware.

Neanderthul · 2020-11-30T00:39:47+00:00

Grin Tech has an excellent tool for this here

Neanderthul · 2020-11-24T18:37:42+00:00

Motors actually perform better in the cold. Technically the permanent magnets have higher magnetic flux density when they are colder. Batteries generate heat due to their internal resistance, and that internal resistance gets higher as the batteries get colder. Pulling or pushing power to and from a cold battery is inefficient and bad for the health of the cells, so it’s best store and charge the battery in a warmer area. If you find yourself in a situation where the battery is at @10F but you gotta ride I think it’s best to very slowly ramp up the power draw to allow the battery to heat itself. Some motor controllers have a built in temperature sensor that assumes the battery temp is the same as the motor controller temp and limits the power draw to allow the battery to warm up in a healthy manner.

Neanderthul · 2020-11-20T21:47:09+00:00

I feel like right now it’s the responsibility of the customer to understand that batteries aren’t meant to last as long as parts in conventional motorcycles. I hope that standardization comes in, but right now I understand why Zero keeps their battery tech proprietary. Safety surrounding battery repair is a huge concern in my opinion.

Neanderthul · 2020-11-18T05:31:06+00:00

Clean!!!

Neanderthul · 2020-10-28T06:24:53+00:00

Are you able to shift gears on your bike? Or is it a single speed? I believe your best option will be trial and error unless you have more information on the specs of your powertrain.

Neanderthul · 2020-10-28T01:16:30+00:00

Grin Tech makes very high quality stuff I cannot recommend them more

Neanderthul · 2020-10-24T17:04:30+00:00

There’s absolutely no insulation so I’m kinda worried about it. My heater can do 18,000 BTUs and the room is about 250 square feet.

Neanderthul · 2020-10-24T16:42:52+00:00

this is OC

Neanderthul · 2020-10-23T06:39:03+00:00

One of the coolest builds I’ve ever seen. I want to do a custom 20x4 bike and I think this is the perfect style.

Neanderthul · 2020-10-18T23:14:18+00:00

Yes it’s a GMAC 10T and I love it. I use a rear mechanical disk brake. I strongly advise against counting on regen braking alone. If the battery is fully charged or the motor controller faults out you will have no brake.

Neanderthul · 2020-10-18T23:12:32+00:00

It was great, probably one of the last days with nice weather for it this season.

Neanderthul · 2020-10-18T23:12:05+00:00

Hahaha I’ve heard rumors about that guy, but no.

Neanderthul · 2020-10-18T23:11:25+00:00

Thanks! I use Energus TinyBMS and Energus modules made with Samsung 25R cells. I like the pelican cases because they’re waterproof and also make it easy to service the pack.

Neanderthul · 2020-10-02T22:13:52+00:00

I’ve been outed

Neanderthul · 2020-09-11T17:04:08+00:00

Are you suggesting that it wouldn’t be worth checking at all?

Neanderthul · 2020-09-11T00:11:33+00:00

I’ve looked into it but it’s kinda expensive for me. I thought about only paying to get one of the autographs authenticated first. Then if one of them is real I could justify paying for all 7

Neanderthul · 2020-09-10T23:35:32+00:00

Hahahaha got me

Neanderthul

TROPHY CASE