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Post by Marshall on Aug 6, 2016 8:34:31 GMT -5
So, Peter. What happened to turbines? Was it the too-hot exhaust that made them impractical?
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Post by aquaduct on Aug 6, 2016 21:02:52 GMT -5
So, Peter. What happened to turbines? Was it the too-hot exhaust that made them impractical? They're not good multi-speed motors like are required for ground vehicles. Inefficient and not well suited to low speeds. They work well for planes but once in the air they aren't stopping until they land, unlike your typical drive to work. Still they've been in cars, trucks, and motorcycles. It just isn't real well suited to the application.
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Post by Doug on Aug 6, 2016 23:47:50 GMT -5
On a side note, Peter. Internal combustion isn't at it's best as a multi-speed motor either. Donkey engines run at constant rpm last 1000s of hours better than multi-speed engines. Donkey engines of one type or the other (steam, gas, even back to donkeys) ran the world for hundreds of years depending on gears and pulleys for different rpms. It would seem counter productive to build a hybrid swapping back n forth between elec drive and gas drive. Just put in a donkey engine and turn a generator or generators and run the whole production track as elec and let the gas engine run all the time you have the car on at a fixed rpm. Less things to go wrong. If you can run an elec car 200 mi on a charge then it should be simple for an engineer to figure out what size donkey engine would be required to keep the batteries charged. A 5kw generator in a motorhome doesn't use a lot of gas and it will keep 6-8 batteries charged and run the home.
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Post by aquaduct on Aug 7, 2016 12:58:59 GMT -5
On a side note, Peter. Internal combustion isn't at it's best as a multi-speed motor either. Donkey engines run at constant rpm last 1000s of hours better than multi-speed engines. Donkey engines of one type or the other (steam, gas, even back to donkeys) ran the world for hundreds of years depending on gears and pulleys for different rpms. It would seem counter productive to build a hybrid swapping back n forth between elec drive and gas drive. Just put in a donkey engine and turn a generator or generators and run the whole production track as elec and let the gas engine run all the time you have the car on at a fixed rpm. Less things to go wrong. If you can run an elec car 200 mi on a charge then it should be simple for an engineer to figure out what size donkey engine would be required to keep the batteries charged. A 5kw generator in a motorhome doesn't use a lot of gas and it will keep 6-8 batteries charged and run the home. The problem is that the smell of donkey shit in the trunk won't pass EPA's evaporative emissions regulations.
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