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Normal Operating Sounds

tesla.com

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Re: Normal Operating Sounds

#151

Post by IgorPartola »

akira2501 wrote: post #67
rpmisms wrote: post #46

Earlier quoted context omitted.

My Kawasaki Ninja 500 will do the same thing, and it's a bike with very old tech. It is air-cooled, so it's probably a safety feature. Still cool.

Supposedly one of the arguments for lane splitting in California was the propensity for bikes to overheat out here when stopped in traffic. My 650 did not have a fan but it did a good enough job heating up my crotch to a nearly unbearable degree on a hot day without it.

I have certainly experienced overheating due to traffic on my air cooled bike. Now I am thinking about adding a fan to my oil cooler that would either be on a switch or even on a proper thermostat.

Re: Normal Operating Sounds

#152

Post by bratwurst3000 »

bb123 wrote: post #100
spike021 wrote: post #41

Earlier quoted context omitted.

I have a relatively analogue car (Subaru BRZ) and there are times when you shut it off on a warm day and then randomly about ten mins later a radiator fan kicks on. I guess it's to help cool down but I don't remember exactly what the manual says. Basically it's cool how cars do things largely on their own sometimes to stay within certain parameters.

This is due to a phenomenon called heat soak which is where the engine temperature increases above normal for a time after it has been switched off due to the lack of coolant flow. The fan is coming on to aid cooling the engine/engine bay to reduce the effect of heat soak. With carburettor fed engines it is sometimes advised by the manufacturer to allow the engine to idle for some time after running it at high RPM. T…

To my knowledge it is because the the oil and water needs the motor on to move through the engine and cool certain parts . If the motor is shout down to early and those can’t circulate anymore following could happen

-turbocharger overheats

-oil overheats And the things you stated and much more …

Better to let the motor run while standing is to run it the last kilometers in low rpm

Re: Normal Operating Sounds

#153

Post by RichieAHB »

londons_explore wrote: post #143

If I was the engineering team, I would be trying to eliminate all these noises. Every single one of these could be engineered away. For example the pops and bangs at a supercharger is the metal shield deforming when heated. Instead, it should have circular ridges stamped into it around the fixing points to let it expand against the springiness of the steel. The clunk noise from brakes could be engineered away by usin…

I guess the question would be, if indeed these suggestions would solve those problems, how much does this cost (I genuinely have no idea!) and how much do I want to spend on this versus putting up a webpage to direct people too.

I want to shave off every last ms of latency in the services I own but at the end of the day at some point it’s good enough (and best for the business) just to manage expectations.

Re: Normal Operating Sounds

#154

Post by benhurmarcel »

londons_explore wrote: post #143

If I was the engineering team, I would be trying to eliminate all these noises. Every single one of these could be engineered away. For example the pops and bangs at a supercharger is the metal shield deforming when heated. Instead, it should have circular ridges stamped into it around the fixing points to let it expand against the springiness of the steel. The clunk noise from brakes could be engineered away by usin…

Of course there are ways to eliminate most noises. But at some point it’s not worth the cost.

Re: Normal Operating Sounds

#156

Post by astrea »

benhurmarcel wrote: post #154
londons_explore wrote: post #143

If I was the engineering team, I would be trying to eliminate all these noises. Every single one of these could be engineered away. For example the pops and bangs at a supercharger is the metal shield deforming when heated. Instead, it should have circular ridges stamped into it around the fixing points to let it expand against the springiness of the steel. The clunk noise from brakes could be engineered away by usin…

Of course there are ways to eliminate most noises. But at some point it’s not worth the cost.

Right. As they’re clearly cutting costs at their current price point /s

Re: Normal Operating Sounds

#159

Post by goldpizza44 »

londons_explore wrote: post #143

If I was the engineering team, I would be trying to eliminate all these noises. Every single one of these could be engineered away. For example the pops and bangs at a supercharger is the metal shield deforming when heated. Instead, it should have circular ridges stamped into it around the fixing points to let it expand against the springiness of the steel. The clunk noise from brakes could be engineered away by usin…

The sounds are not that intrusive...While others have pointed out the costs involved in solving them, the real question is "will muting each and every sound sell more cars?". Of course from an engineering point of view the other question is "are these sounds indicative of something that will fail prematurely?". The complexity of adding some sort of muting may introduce other modes of failure. Sometimes the best solution is the simple solution.

At this point in the EV marketplace the I would say the answer is no to both questions. Tesla is far better concentrating their engineering teams on new products that can continue their growth.

Now if some competitor comes up with a perfectly quiet car and that becomes a selling point, then it is time to revisit the engineering.

Re: Normal Operating Sounds

#160

Post by vGPU »

stephen_g wrote: post #90
vGPU wrote: post #72

Earlier quoted context omitted.

Heat pumps can provide an “efficiency” of some 300-400%+. The “trick” is that they use electricity to move heat instead of creating heat, which is why heat pumps stop working well under a certain temperature. They kinda work like a reverse refrigerator. A fridge takes heat out from the inside and moves it to the outside. A heat pump does the opposite.

You’ve completely failed to answer their actual question, it was the claim of less than 100% efficient heating they were asking about…

No. He was replying to this post:

> Actual heating systems can be better than 100% efficient, while crypto mining or cinebench or whatever is The intricacies of why a crypto minor is less than 100% efficient when working as a heater are easily deduced, unless you’re precisely the sort of midwit that likes to leave replies such as the one you left.

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