AndHeiberg

> some people are trying to solve a financial problem or a PR problem with a nuclear engineering solution and a new slogan (SMR). It is unlikely to become very successful. But fear of missing out is in full play right now and will likely result in significant investor losses. Thus, we should expect something similar to the internet dot-com crash.

They key insight being that SMR designs use 4x more fuel and fuel prices are predicted to increase 3x making that uneconomical.

Note: I'm not affiliated with Copenhagen Atomics, but as they're in my home town I've been following them for years. Thomas (CEO) has made many good presentations over the last 10 years and has always focused on what we would now call "hardware rich" development.

I don't generally, but I've been hacking away at the infrastructure for high frequency trading crypto currencies for a while.

I originally just wanted to do arbitrage trading, so I built a simple tool to find opportunities using pre-existing services.

But as I slowly learned more about it, I had to expand it into monitoring the exchanges in real time with orderbooks and past trades to get around annoying false positives in my original system.

It's pretty interesting, but I haven't had the time to work on it recently. Plus the increased efficiency of the markets has made arbitrage trading a lot less desirable in 2018.

I would be happy to discuss it with like minded people.

Super cool

+9001 this!

> My guess is that with those included it weighs AT LEAST 100kg, probably closer to 200kg.

Interesting, that would put the power to weight ratio down to combustion engine levels.

I found this http://www.teslarati.com/tesla-model-s-weight/ that supports your thought by putting it at 150 kg.

> I can't find any details on what Siemens includes in their weight figure

Well they don't have a transmission so that shouldn't be a concern.

> is able to continuously output 260kw, the Tesla motor isn't even close to that. I've personally tried it a few times on the Autobahn and the Tesla limits the output to about 100kw (displayed) after less than a minute of full throttle.

In did try to correct for this sort of thing by picking one of the lower kW ratings for the Tesla. I was not aware it was that drastic. If we account for this the Tesla is almost in Honda accord territory. That's rather disconcerting given Musk citing figures like the ones I outlined. https://youtu.be/PULkWGHeIQQ?t=41m30s

Yeah... was thinking maybe it could charge it self and fly "patrols" that way. But yeah this is a ridiculous site. And as nickparker points out the "20 minutes" is highly aspirational.

Thanks for the summary!

[This](https://forums.teslamotors.com/forum/forums/motor-rpm-155-mp...) does suggest that the RPM of 18.000 is quie different than the 2.500 mentioned for the Siemens.

I do think the figure of 32 kg for the Tesla motor includes the fixed gear though. So I don't so why that would be of any concern.

idk I still don't understand where the unique ability of the Siemens engine is. Obviously not the power to weight ratio. Not certification as it's still in development.

As for materials and power/torque I have no clue.

Is this different in the Siemens engine though? Is that why they say "delivers a continuous output of about 260 kilowatts" emphasis added. I guess all that means is that they're really able to deliver more power than advertised on a full charge?

Yeah exactly, but given the numbers, it doesn't seem to outperform Tesla's engines? Perhaps they're also taking in to account the power usage as battery weight is more significant in planes... idk would love if it someone could help me understand it better though.

See other comments I had it mixed up for sec there.

What's the difference between a flight rated motor and a no flight rated one mechanically? Why is the comparison between Tesla and Siemens engines unfair?

Yeah my bad, had that thought at 6 in the morning. I've updated it. My central question still stands though. Tesla seems to outperform the Siemens engine by quite a lot, why are did they make such a big splash?