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Old 07-07-2019, 11:16 PM   #31 (permalink)
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Quote:
Originally Posted by oil pan 4 View Post
Yeah I hadn't heard anything about hub motors lately. Assumed the problem with the hub motors wearing out faster than the tires was fixed. No?
I haven't read about anything new in the hub motor arena in a while now.

My mechanical understanding is rather limited. But I recall the bearings ... and tight tolerances on the rotor/stator pairs .. being the issue.

Since hub motors have been around for a long time on bikes and scooters, I thought that the bearing-only-being-on-one-side, for the car hub motors, explanation made some sense.

Maybe the ultra-light overall weight reduces the wear? I'm not familiar with how bearings wear ... but most stuff that is mechanical does not appear to have linear relationships between wear and pressure, or wear and torque, or whatever.

Anyone read anything new on hub motors recently?

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Old 07-08-2019, 12:04 AM   #32 (permalink)
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I tried to dig some. Looks like the only vehicles hub motors are really used in are bikes, very slow moving very large machinery and concept cars.
If they are used in a car application, they still don't appear to last very long.
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Old 07-08-2019, 07:25 AM   #33 (permalink)
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Meanwhile in Tokyo...

https://insideevs.com/news/358458/toyota-tests-prius-phv-solar-charging/
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Old 07-08-2019, 08:31 AM   #34 (permalink)
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I was experimenting with putting solar panels on vehicles back around 2010. Not just a solar panel, enough to accomplish something like powering 12v accessories.
A large company like Toyota doing it now doesn't impress me much.
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Old 07-08-2019, 09:18 AM   #35 (permalink)
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It is just that if you combine a very efficient vehicle (4th gen plug-in Prius) with very efficient solar panels (34% - that's crazy) over a large area (even the back window and spoiler) you get something that does add several miles a day.
One sunny day is all it takes to charge its plugin battery from almost empty to almost full.

The studded panels look weird though. Not a permanent fixture?
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Old 07-08-2019, 09:38 AM   #36 (permalink)
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I didn't have to stud my panels.
How much more do 34% panels cost over standard 22 to 24%?
When I looked it up several years to go over 30% cost 10x more than standard 20 and 22% available at the time and to exceed 40% cost 40x more than std.
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Old 07-08-2019, 11:09 AM   #37 (permalink)
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Elio (glorified Can-Am)to be made in old hummer plant in Shreveport /(made in Mexico)
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Old 07-08-2019, 11:14 AM   #38 (permalink)
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Quote:
Originally Posted by RedDevil View Post
It is just that if you combine a very efficient vehicle (4th gen plug-in Prius) with very efficient solar panels (34% - that's crazy) over a large area (even the back window and spoiler) you get something that does add several miles a day.
One sunny day is all it takes to charge its plugin battery from almost empty to almost full.

The studded panels look weird though. Not a permanent fixture?
I would make a solar carport or mobile solar charging trailer in order to get most voltage and bang for my bucks

Those roof panels on a prius would cost some Dollars aka Doll Hairs to replace ...if solar cell /PV where there there now Tesla and others would go there there
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Old 07-08-2019, 01:20 PM   #39 (permalink)
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The problem with the solar carport idea is... when the sun is shining all day, my car is sitting in a shadeless parking lot at work 5/7ths of the week. So you would also need to have a whole battery for the garage somewhat larger than the one in the car to actually charge your car from that. And of course, my house is surrounded by 70-85' tall trees that make solar non cost effective.
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Old 07-08-2019, 03:54 PM   #40 (permalink)
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Sounds like you need to cut down a bunch of trees if you want to save the world.

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