Search found 9791 matches

by Hillhater
Nov 29 2021 6:03am
Forum: Battery Technology
Topic: Battery Failure
Replies: 7
Views: 117

Re: Battery Failure

danmar713 wrote:
Nov 28 2021 3:04pm
...... After leaving it connected to my solar setup (campervan) for a few weeks it has sadly lowered voltage to 10.6 ....
Sounds like a problem with your solar charge controller ..?
by Hillhater
Nov 29 2021 12:07am
Forum: General Discussion
Topic: Ivermectin/Covid info
Replies: 186
Views: 3914

Re: Ivermectin/Covid info

Something even more important happened on Aug 15th of that year - Japan hit 50% vaccination. And by the beginning of September, when cases began to decline, they hit 60%. Yes , i think we all knew that Jack. But the question is why didnt any other country with 60+% vaccine levels , see such a drama...
by Hillhater
Nov 28 2021 4:46pm
Forum: Alternative Energy
Topic: Wind turbine at 1 m/s
Replies: 1
Views: 63

Re: Wind turbine at 1 m/s

Nothing new there..
...its just a version of the Savonius turbine design...as old as the wind power industry.
...i wonder why no one has bothered to use it commercially ?? :wink:
by Hillhater
Nov 25 2021 10:24pm
Forum: E-Vehicles General Discussion
Topic: Looking for drive reduction suggestions
Replies: 5
Views: 279

Re: Looking for drive reduction suggestions

For any given amount of power, electric motors usually make a lot more peak torque (which is what breaks gearboxes). Im sure you know that mechanical power is just a theoretical figure calculated from torque Torque is what a motor produces, and what is physicaly measured. The main difference betwee...
by Hillhater
Nov 23 2021 5:21pm
Forum: Electric Aircraft
Topic: Rolls-Royce world’s fastest all-electric aircraft
Replies: 8
Views: 2507

Re: Rolls-Royce world’s fastest all-electric aircraft

They should reallocate those workers to the Modular Reactor development and construction team !
..or to figuring out how to modify their Aero engines run on Hydrogen !
by Hillhater
Nov 23 2021 3:47pm
Forum: Motor Technology
Topic: Ford ELUMINATOR Electric Motor
Replies: 4
Views: 196

Re: Ford ELUMINATOR Electric Motor

Just be grateful that some automakers are still prepared to sell spare components like this.
by Hillhater
Nov 19 2021 4:27pm
Forum: EBike General Discussion
Topic: Myths about tires (part 1)
Replies: 97
Views: 1860

Re: Myths about tires (part 1)

Pure NITROGEN is used in race car tyres for one primary purpose......less pressure variation with temperature changes .! This is due to the elimination of WATER VAPOUR in the Nitrogen as a result of its production process. Water vapour in normal compressed air can result in significant pressure chan...
by Hillhater
Nov 17 2021 12:52am
Forum: Vendor Relations Corner
Topic: Day Six bicycles
Replies: 4
Views: 218

Re: Day Six bicycles

Everyone has different preferences.. Some want a super light carbon “fixie” road bike.. Some prefer a fat tire , full suspension , cargo hauler Some prefer a “full house” DH , MTB with 8” of suspension Some prefer a full recumbent Some prefer a Townie Some prefer a Day6 ...Each to their own ! :wink:
by Hillhater
Nov 16 2021 10:04pm
Forum: Vendor Relations Corner
Topic: Day Six bicycles
Replies: 4
Views: 218

Re: Day Six bicycles

Very different geometry to a Townie, and those who have them , love them. Pity there is no suspension though ! https://endless-sphere.com/forums/viewtopic.php?f=2&t=85245&p=1269844&hilit=Day6#p1269844 https://endless-sphere.com/forums/viewtopic.php?f=2&t=83283&p=1222230&hilit...
by Hillhater
Nov 12 2021 7:56pm
Forum: EV Business World
Topic: EV charging prices in Europe increase 500%
Replies: 61
Views: 7008

Re: EV charging prices in Europe increase 500%

I was not quoting political retoric, it was quite clear from official reports what the basic problem was, .. ....and as i stated. the primary cause was human stupidity...not responding after the previous winter blackouts in ‘89 and 2011, and “winterising” the facilities...... My comment regarding ne...
by Hillhater
Nov 12 2021 6:32am
Forum: EV Business World
Topic: EV charging prices in Europe increase 500%
Replies: 61
Views: 7008

Re: EV charging prices in Europe increase 500%

Hillhater is trying to drag politics into this thread too. .?? I did not mention politics !..... My comments are purely related to the technical/ strategy decisions that have led to the fiasco of Wind and Solar as primary generation sources. It seems all sides of politics are sold on this madness.
by Hillhater
Nov 10 2021 10:48pm
Forum: Battery Technology
Topic: Lipo packs off the shelf with high discharge
Replies: 3
Views: 159

Re: Lipo packs off the shelf with high discharge

Assuming your 300A is a peak figure (10-20 secs) and not continuous, ....
...than practically any decent “RC” type Lipo packs will work.and can be easily diy assembled .
by Hillhater
Nov 09 2021 8:10pm
Forum: EScooter/EMotorcycle Build Threads
Topic: RIPPY SCOOT
Replies: 56
Views: 1792

Re: RIPPY SCOOT

Rippy,..
Does the Rego inspection check for scooters have a brake % test ...like they do with cars ?
If so , there will be a minimum % figure for the rear that you have to meet
..it may be useful to know !
And , yes, inline brake pressure proportioning valves are common.
by Hillhater
Nov 09 2021 8:02pm
Forum: Battery Technology
Topic: Thread for new battery breakthrough PR releases
Replies: 1772
Views: 280588

Re: Thread for new battery breakthrough PR releases

Factorial Solid State Batteries for Hyundai and Kia EVs . Another player in the Lithium SS cell tech has linked up with Hyundai for new pack developments. USA based Factorial claim to have a commercial SS cell that will give 20-50% more range (energy density ?) than current Li cells https://factoria...
by Hillhater
Nov 08 2021 6:37pm
Forum: Alternative Energy
Topic: Converting Home's - RV's to DC
Replies: 30
Views: 527

Re: Converting Home's - RV's to DC

Did some basic math. Nothing is on paper yet. First offer is a 6.5 KW system at $85/month. Guessing that is a 100% markup at 0%/interest + all the KW we don't use. We know they want to come out a head. Will 6.5KW be enough after say 10yrs. Don't want to pay it off and it would be useless or need al...
by Hillhater
Nov 08 2021 6:01pm
Forum: EV Business World
Topic: EV charging prices in Europe increase 500%
Replies: 61
Views: 7008

Re: EV charging prices in Europe increase 500%

Renewable energy is not to blame for the Texas energy crisis "About 56 percent of Texas' energy comes from natural gas, just under 24 percent comes from wind, 19 percent from coal, and almost 9 percent from nuclear energy.... Well, i see the NBC are dilligent at fact checking ! :lol: 56+24+19+...
by Hillhater
Nov 08 2021 1:53am
Forum: EV Business World
Topic: EV charging prices in Europe increase 500%
Replies: 61
Views: 7008

Re: EV charging prices in Europe increase 500%

Last time I talked to CPS our power provider, about a Solar hook up. I was told that they would not buy power but could use the grid for storage at no cost. Our transformers are old and do not push power back to the supply lines. At my location 4 houses are on one transformer, any excess power made...
by Hillhater
Nov 08 2021 1:42am
Forum: EScooter/EMotorcycle Build Threads
Topic: RIPPY SCOOT
Replies: 56
Views: 1792

Re: RIPPY SCOOT

Rippy, ... have those cells been delivered yet ?
by Hillhater
Nov 07 2021 7:03am
Forum: Battery Technology
Topic: When will 4680 cells be available to the public?
Replies: 5
Views: 311

Re: When will 4680 cells be available to the public?

Until some commercial spec samples are independently tested , we wont know if there is any significant advantage in the 4680 cell.
But , one thing is certain, it will be more expensive ..$/kWh.. than equivalent 21700 cells !
by Hillhater
Nov 06 2021 9:08pm
Forum: Battery Technology
Topic: When will 4680 cells be available to the public?
Replies: 5
Views: 311

Re: When will 4680 cells be available to the public?

None are commercially available yet (even the Tesla/Panasonic),... But some are in the pipeline.. https://insideevs.com/news/497176/bak-battery-unveils-first-4680-cells-china/ Also...the same source had this in July... South Korean battery manufacturers Samsung SDI and LG Energy Solution have comple...
by Hillhater
Nov 03 2021 10:09pm
Forum: EBike General Discussion
Topic: How do you think solid state batteries will change how we use hardware?
Replies: 188
Views: 5085

Re: How do you think solid state batteries will change how we use hardware?

I think thats a tesla hater myself the cars would have drastically different range and why all the effort of making a giga press to then use a different cell type thats inferior. ..Several reasons,..some openly stated by Tesla,...and some inferred ! 1) Cost...The CATL LiFe cells are much cheaper th...
by Hillhater
Nov 02 2021 9:40pm
Forum: EBike Technical
Topic: Torque Sensor prototype for Hollowtech 2
Replies: 7
Views: 598

Re: Torque Sensor prototype for Hollowtech 2

Yes, as an engineer, removing the Hollowtech cranks and BB assembly when fitting mid drive , and replacing it with some Chinese made , heavy , square taper, type...almost made me cry !
You cannot help but admire the creative design and manufacturing ability of Shimano !
by Hillhater
Nov 02 2021 4:36pm
Forum: EBike Technical
Topic: Definitive Tests on the Heating and Cooling of Hub Motors
Replies: 2120
Views: 441876

Re: Definitive Tests on the Heating and Cooling of Hub Motors

I like my ATF. However I have stopped using it. Hubsinks only. The ATF let no oil out.. but... Water got in. Messy emulsion. Did not rust... But... Was creating drag, the half a litre in there. Two points.... 1) ..”half litre”.. seems way too much compared to other users of SA. Hence the high drag....
by Hillhater
Nov 01 2021 8:11pm
Forum: Electric Watercraft
Topic: Electric liveaboard catamaran project
Replies: 1
Views: 123

Re: Electric liveaboard catamaran project

Nice boat !.... i have happy memories of living on a cat ..more than a few years ago ! I dont know where you are based , or plan on going to.....but if you are happy to rely on the sun for motor power etc, then you should consider using direct solar water heating also . Many experienced free campers...
by Hillhater
Nov 01 2021 7:55pm
Forum: EScooters/EMotorcycles
Topic: 170mph EV Land Speed Motorcycle
Replies: 23
Views: 995

Re: 170mph EV Land Speed Motorcycle

But i thought you needed the weight for traction ?