Jack Willis

@faraz_r_khan What level of trust do you have of the internal construction/BMS protection strategies? What type of documentation is provided to build said trust?

Trying to compete with Chinese manufacturers feels like trying to compete with Claude code on coding. This fully custom battery pack was manufactured and delivered in 2 weeks and the whole thing is cheaper than buying just the 21700 cells retail in the US 😭🤯 same cells!

@parthingle_x @_Stocko_ Don’t forget the almighty interlock!

You take cold rolled sheets of thickness between 0.2mm and 0.5mm of special steel with like 3% silicon, apply enamelling to the sheet so that when they are stacked they are mutually insulated. Then stamp cut the spokes shape, stack the sheets till they reach the desired height, and fused together. Fusing method can be welding (higher eddy currents), or using an adhesive enamelling (lower eddy currents). Then it is powder coated with that green thing. I have a plan to make these myself x.com/parthingle_x/s…

how are these things made? i just realized these are essential for mankind's survival and our eventual transition to kardashev 2. i kinda feel like i should know how to make one..

@DanielCars05 What’s the factory fitted tire? Curious to understand, as its shape doesn’t appear to immediately lend itself to aero efficiency

Home in the Renault 5 after 182 miles. It managed 5.1 miles/kWh cruising at 60-65mph. It still has 19% battery left! It’s mighty impressive, believe all the hype. I’ve got plenty of content planned with this car, but is there anything specific you’d like to know? ⚡️

@sdamico @samuelhberry @ImpulseLabs_ It would add a stamping tool, but I wonder if the required compliance can be built into the main sheet metal part as a/series of flexures

@samuelhberry @ImpulseLabs_ Pre-load the induction coils to have no gap with the glass above them

Ramping @ImpulseLabs_ 📈📈📈📈

@boxcardavid Any more images of the built in controller? Curious about how they manage thermals being that close to the windings

This motor has small pieces of bamboo between the stator teeth at the shoes. Like the lacing on the windings it constricts the windings a bit, but I suspect it’s mainly to reduce windage noise, thoughts?

@fxk8y @boxcardavid @liminalsunset_ Taken me 3 days to realise you meant the injection mould tool would be made from stainless not the part 🌚

@J_W97 @boxcardavid @liminalsunset_ not an injection molder, but I'd guess just using a non-ferromagnetic stainless alloy should do the job, despite it being way more expensive to machine

Why isn't Dyson making drone motors?

@fxk8y @boxcardavid @liminalsunset_ A similar product used a pressed on, stainless steel sleeve (looked like had been deep drawn).

@boxcardavid @liminalsunset_ On the topic of strange rotors, I came across a fully overmoulded 9s6p rotor. Still unsure how they constrain the magnets in the injection mould tool without them sticking to the tool itself (no adhesive under the magnets after a ‘strip down’)

@liminalsunset_ Oh I see it’s like a circular comb. I’ve seen that in aluminum but not plastic.

@KiwiEV Out of curiosity, what was the packaging clash that required it be mounted sideways? Do those sockets have a water drain at the bottom similar to CCS?

@liminalsunset_ @CHENYAO981123 Very useful (if expensive) for stators likely to see high vibration environments

looks like the process of making those "resin pack dc brushless motors" used in air purifiers and air conditioners. The potting is mechanically probably not the best, but it saves the cost and weight of a metal frame for the motor (bearings are cast with the case), while being electrically isolating (prevent bearing current).

Step1→Step2→Step3 of injection machine.

@gregm12 @brandenflasch @Hyundai @Kia Interesting cheers. Sounds like creepage & clearance requirements dictating body changes rather than necessarily any changes to the pins themselves.

Just now seeing all this. So, my assumption is that the path between conductors along the surface of the plastic is probably of marginal length if the connector is wet and dirty in the original design (left). The updated design does 2 things: 1. It makes the path for conduction along the surface longer and less direct 2. It provides a way for the inlet port to physically reject connectors that are not the J3400 design rated for 1000V (which may also have additional internal voltage isolation features). It seems Hyundai did not implement either protection. The image below shows the potential paths for surface leakage current (red) and the areas where material has been removed in the Tesla connector (green). Isolation mounts on high voltage wire do something similar (See second image)

What the heck - first @Hyundai / @Kia using only 350A adapters for NACS to CCS and now the CCS to NACS adapter included with native NACS Ioniq 5 is using "NACS legacy" / 500V Tesla NACS aka not 1000V J3400 (NACS). Who is doing this at HMG?? (Pics from The Ioniq Guy and NACS / J3400 comparison) OP: facebook.com/share/p/1AtpbQ…

@brandenflasch @Hyundai @Kia That’s my point, the differences aren’t immediately obvious

@J_W97 @Hyundai @Kia Look at the difference in tips

@AviSchiffmann @alienranks Agreed, ultimately, at worst this is a few $10k/100k’s for a metal stamping tool for the ports outer case. Even if they require custom internals (vs a modified case for something off the shelf), their volumes make the tooling capex basically zero per unit.

@alienranks Doing this is profit maxing Makes the device more luxurious which means people will pay more for it

The best way to appreciate Apple products is to try and build something yourself. They curve the fucking usbc port. They curve the fucking usbc port

@DawnTreaderEng What’s the purpose of the (looks like) slip joint on the anti intrusion brace? Can’t picture how the for and aft legs being able to separate wouldn’t defeat the braces purpose

@DawnTreaderEng @toddbarnard In this setup, where does said air go? Is it trapped between this flap and compressor, yielding a pocket of high pressure air, whilst allowing the plenum volume to remain at a lower value?

I don’t want to say ‘middle-aged, white man’, but I’m definitely seeing a trend in the bullshido and absolute lack of knowledge when it comes to net zero. Ok, let’s fact this out. The particular mower, a 36v Ebauer will run for 80 mins on a full charge and consume 360Wh/0.36kWh in the process. At today’s cost of 33p/kWh it would cost 11.88p. On that particular day the grid intensity was very low, and despite what Lee said, Ratcliff doesn’t run on gas, only coal and coal mix. The emissions for his area were 99g CO2/kWh, so if he used the full battery, he’d have emitted 35g/CO2. The most fuel efficient B&S push along mower will burn approx 1.66 litres of fuel for the same time, (I’ve under quoted this as the figures are tricky to pin down) Burning 1 litre of petrol produces approx 2.3kg of CO2, so the B&S mower would emit 2.875kg for the 80 minutes and a host of other emissions. PM, CO, NOx, SO2 to name a few. (In his street) comcar.co.uk/emissions/co2l… The cost in petrol based on a 5hp B&S mower of 1.25l/hour would have been £2.39 for the 80 mins. Emissions 33g for electric 2875g for petrol Energy use 0.36kWh for electric 16.6kWh for petrol This chap has absolutely no idea what he’s talking about. If he can’t square away the basic figures of a lawn mower, what else do you think he’s going to struggle with. Think about it 🤔 @LeeAndersonMP_ your welcome 😘

Please don’t fill this online form with a joke name and email address, it would really mess with their data harvesting.

- Domestic solid fuel burning is now the largest source of UK particulate pollution, overtaking traffic - Government monitoring networks are not designed for static suburban pollution sources - Citizen science is filling the gaps theguardian.com/environment/20… [1/4]