May-03-2019 02:48 PM
May-07-2019 12:00 PM
I've used some locomotive traction motors back in the 70's for a log
mill controller. That thing was about 6' in dia with a solid steel
shaft about 8" in dia.
Locomotives use electric traction motors as their main drive and a
diesel generator to supply it along with batteries.
A few years ago consulted on the next gen Hybrid and looked up traction
motors thinking electric is around the corner. Found this one:
Electrodynamics Associates 1500 HP traction motor
187 HP at 600 rpm
375 HP at 1200 rpm
750 HP at 2400 rpm
1500 HP at 4500 rpm
This one is still a proto type for the next gen tank.
It is small enough to go into our light duty trucks, but will be too
expensive. So it's little brother will apply.
Since 'some' electric motors can be over driven (think of Nitro
injection that the dragsters use on an internal combustion engine, ICE).
Since it has so much toque at the low end, won't need a tranny of any
kind. Transmissions are needed by ICE's because they have such low
end torque, even a diesel. Why locomotive is electric to get them
going (engine weighs in around 400K-500K lbs, plus the other cars).
So small it can fit in the space where the tranny 'used' to be.
Agree with you that the battery is now the limiting component/system.
But that will be solved soon enough, or just live with tons of Optimas
for a while....
electrodynamics wrote:
Developed under contract from the U.S. Army TACOM, the motor is of a pancake type design with water-cooled stators.
The controller design is based on hysteretic switching of input current. Water cooled power IGBTs have control signals transmitted via fiber optic cables to prevent adverse effects of electrical interference.
Breadboard assembly and tests with partial loads have been completed.
Details:
Motor Diameter: 25 inches
Length: 10.5 inches excluding shaft
Speed.RPM...Continuous HP....DC Bus Voltage
4500...............1500..............1200
2400................750...............600
1200................375...............300
600.................187...............150
Note: Other speed, torque and voltage combinations available.
May-07-2019 09:01 AM
danrclem wrote:Never mind all that. Electric vehicle just drives better.wanderingaimlessly wrote:
Batteries are a dirty business, and many places are shutting down.
Guardian article on EV's
The greens cant get it into their heads that moving the pollution to another location doesn't cure the worldwide problem. This becomes a NIMBY issue in North America, and the media plays along with it.
It makes them feel good about themselves.
According to science the earth's temperature has always been changing so I'm sure it's been hotter than it is now quite a few times. How does anybody know what the best temperature for the planet is.
May-07-2019 07:57 AM
danrclem wrote:
How does anybody know what the best temperature for the planet is.
May-07-2019 07:41 AM
wanderingaimlessly wrote:
Batteries are a dirty business, and many places are shutting down.
Guardian article on EV's
The greens cant get it into their heads that moving the pollution to another location doesn't cure the worldwide problem. This becomes a NIMBY issue in North America, and the media plays along with it.
May-06-2019 10:10 PM
May-06-2019 08:53 PM
BenK wrote:Lessmore wrote:
snip....
Or Ben...if you decide to keep your big block Suburban a big block Suburban...how about the GM Performance Catalogue HT502 V8... Rat motor...with 502 cubic inches, 406 hp @ 4200 rpm and 541 lb. ft. or torque @ 3200 rpm.
I recently picked up Chevy Performance catalogue from the local Chevy dealer...$ 5 USD...makes for great reading for a gearhead like me.
Of course cost of crate engines is something else again. 😄
Going on the back burner for now...daughter just had a cancerous brain tumor removed and am supporting her. Removed and radiation treatment went well. Crossed fingers for a while
California has a smog test every other year and big blocks are labeled 'potential gross polluters', so anything I do, must pass smog.
Am okay with that, as a 71-year old and remember visiting Disneyland as a kid and not enjoying the brown sky and difficulty breathing
A mild cam, SS valves and maybe better tappet rollers and rocker/rollers to allow a bit more RPM, but most likely will just build or crate 7.4L from GM.
Will go with 5.38 diff's and a 0.7 GearVendors to get more HP from a standstill and still have a double OD with final an approx 2.6 final gear to the axles
Stock has 100% torque at about 1,600-1,800 RPMs, so with 5.38's, can pull just about anything I want to
Used to occasionally see 15.2 MPG with the 4.1's, so am hoping to see a bit better than that with a 42 gallon main fuel tank
4L80E has a few rated for +1,000 HP with a 3-year warranty at about the same price as a normal rebuilt unit, so if only using it at less than half that rating, it should last a long time. Plus an anal about fluid flush schedules and always use synthetics
Either or both, junk yard (newer than mine) front seats, or have the old ones rebuilt
Saw a rear turbo kit years ago and might look into that, but after the above. Throttle lag is okay, as am addicted to HP, so that will manage me and just for high altitude cruising
May-06-2019 07:05 PM
RoyJ wrote:time2roll wrote:Me Again wrote:Probably do better in fleet service.
What electric vehicles need is slide in battery packs, you pull into a service station and the robot slides out your battery and slides in a fully charged one. They charge you for the amphours used in the battery removed. Larger vehicles might get 2, 3, 4 or more batteries. Chris
Many fleets of port container tractors, airplane tow trucks, etc., do use that strategy.
The problem for private cars is each station would have to stock hundreds of models of batteries for each make and model.
Why don't cars standarize battery packs? Perhaps, but in their argument, each pack has to be shaped around their chassis for performance, space, and crash protection.
For instance, be really hard to share a pack between a Corvette and Nissan Altima, even though the cars are the same weight class.
May-06-2019 06:41 PM
time2roll wrote:Me Again wrote:Probably do better in fleet service.
What electric vehicles need is slide in battery packs, you pull into a service station and the robot slides out your battery and slides in a fully charged one. They charge you for the amphours used in the battery removed. Larger vehicles might get 2, 3, 4 or more batteries. Chris
May-06-2019 01:50 PM
Lessmore wrote:
snip....
Or Ben...if you decide to keep your big block Suburban a big block Suburban...how about the GM Performance Catalogue HT502 V8... Rat motor...with 502 cubic inches, 406 hp @ 4200 rpm and 541 lb. ft. or torque @ 3200 rpm.
I recently picked up Chevy Performance catalogue from the local Chevy dealer...$ 5 USD...makes for great reading for a gearhead like me.
Of course cost of crate engines is something else again. 😄
May-05-2019 04:20 PM
Lessmore wrote:Reisender wrote:Lessmore wrote:
We make a trip across three prairie provinces...a bit more than 700 miles and we usually drive straight through in 12 hours or so with our IC vehicles. It's not business trips it's to visit family. We do this trip 3-4 times a year.
Last family trip was in late January of this year...temps for half the trip. eastern Saskatchewan, western Manitoba ranged from -28 to -33 and there are few towns in that area. The internal combustion engine in our vehicle was able to provide good cabin heat...but the heater fan and heat were turned up to close to maximum.
My understanding is that batteries lose efficiency at extreme cold temperatures and any cabin heat for the vehicle, comes from the batteries that are also providing motive power to the vehicle. EV range suffers in these conditions.
I know a vehicle range of 300 ( 186 miles) -400 (248 miles) kms ... in this cold would have that range lessened significantly in the cold winters we experience, out here during prairie winters.
We couldn't do our 12 hour...700 + mile (1,126 kms) trips. On the prairies, there are no passenger trains anymore. Greyhound cut out bus service. Plane service is good to major centres, but a lot of the prairies are rural and can be very cold in the winter and if you need to travel, you generally have to rely on your own vehicle.
Looks likely that EV's will eventually take over transportation...but there needs to be significant improvement in range, charging infrastructure. I'm sure it will be here eventually...out here...and EV's will improve battery range and charging speed....but that appears be a ways in the future.
Ahh yes. I remember those kind of trips well. Lived in Saskatchewan and Alberta. The other big challenge of having an EV in Saskatchewan is the complete lack of infrastructure for charging. And the goverment has made it quite clear there will be none in the future either. I would think eventually there will be a few DC fast chargers on the trans Canada though so people can at least pass thru though the province though. Maybe part of the Petrocan network.
I was watching The Fast Lane series on the daily life ownership of their Tesla 3. During the show, they were looking at the Tesla map that shows where Tesla chargers are available and they seem to be quite common in many areas...except in Saskatchewan, Manitoba, NW Ontario, the Dakotas, etc...and I'm guessing because this part of the world is a very cold, sparsely populated area of the continent.
Now I didn't see Alaska, the NW Territories, Nunavut, Yukon, etc...but I'll assume they are also not served well by charger infrastructure.
Now I'm not criticizing Tesla as other EV manufacturers..such as GM, etc. who say all their future will depend on completely EV vehicles...
...and to quote you (and I agree with you) ...the government (Cdn. Feds) has made it quite clear there will be none (EV infrastructure) in the future either...and so far...private companies don't seem to be setting up infrastructure..here..either.
So...I look at the transportation future of the prairies, the territories and some of the states I've mentioned...what are we going to do if the future is going to be EV all the way..but so far no sign of infrastructure to support these areas ?
It is a conundrum.
My hope is that some manufacturers...ie; Japanese companies such as Honda, Toyota, Nissan, etc..continue to make IC vehicle and make them available in these cold, sparsely populated areas for the foreseeable future....until charging infrastructure, faster charging rates , etc..becomes readily available out here in the sticks. Of course, I'm hoping that the gas and stations to fuel IC vehicles in the future, out here, is still maintained, but who knows anymore.
Even though I've had mostly GM products for a number of decades...I'm close to the point of giving up on them...as they state that they won't be making vehicles that will meet my...perhaps minority in North America ...needs in the years to come.
I just read an article about a South Dakota man who is taking GM to court as his GM EV vehicle during cold winter months loses about 100 miles of range...due to extreme cold in the winter. It will be interesting to see how this all pans out.
Again I'm not anti EV...I just want good charging infrastructure, faster charging, etc...out here. Sitting in a dead EV (or IC) vehicle by the side of a lonely highway in -30...late at night...can be dangerous.
May-05-2019 03:32 PM
Reisender wrote:Lessmore wrote:
We make a trip across three prairie provinces...a bit more than 700 miles and we usually drive straight through in 12 hours or so with our IC vehicles. It's not business trips it's to visit family. We do this trip 3-4 times a year.
Last family trip was in late January of this year...temps for half the trip. eastern Saskatchewan, western Manitoba ranged from -28 to -33 and there are few towns in that area. The internal combustion engine in our vehicle was able to provide good cabin heat...but the heater fan and heat were turned up to close to maximum.
My understanding is that batteries lose efficiency at extreme cold temperatures and any cabin heat for the vehicle, comes from the batteries that are also providing motive power to the vehicle. EV range suffers in these conditions.
I know a vehicle range of 300 ( 186 miles) -400 (248 miles) kms ... in this cold would have that range lessened significantly in the cold winters we experience, out here during prairie winters.
We couldn't do our 12 hour...700 + mile (1,126 kms) trips. On the prairies, there are no passenger trains anymore. Greyhound cut out bus service. Plane service is good to major centres, but a lot of the prairies are rural and can be very cold in the winter and if you need to travel, you generally have to rely on your own vehicle.
Looks likely that EV's will eventually take over transportation...but there needs to be significant improvement in range, charging infrastructure. I'm sure it will be here eventually...out here...and EV's will improve battery range and charging speed....but that appears be a ways in the future.
Ahh yes. I remember those kind of trips well. Lived in Saskatchewan and Alberta. The other big challenge of having an EV in Saskatchewan is the complete lack of infrastructure for charging. And the goverment has made it quite clear there will be none in the future either. I would think eventually there will be a few DC fast chargers on the trans Canada though so people can at least pass thru though the province though. Maybe part of the Petrocan network.
May-05-2019 10:57 AM
May-05-2019 10:51 AM
May-05-2019 08:20 AM
Me Again wrote:Probably do better in fleet service.
What electric vehicles need is slide in battery packs, you pull into a service station and the robot slides out your battery and slides in a fully charged one. They charge you for the amphours used in the battery removed. Larger vehicles might get 2, 3, 4 or more batteries. Chris