Search found 9759 matches

by Hillhater
Oct 19 2021 6:32am
Forum: Large EV General Discussion
Topic: Students’ solar-powered camper van turns heads on 1,800-mile road trip
Replies: 4
Views: 145

Re: Students’ solar-powered camper van turns heads on 1,800-mile road trip

You obviously not familiar with the established “pop top” camper van systems ?
by Hillhater
Oct 16 2021 9:41pm
Forum: Alternative Energy
Topic: Hydrogen storage.....Solid State ??
Replies: 8
Views: 333

Re: Hydrogen storage.....Solid State ??

. Ford have both hydrogen fuel cell vehicles and H2ICE (hydrogen internal combustion engine) Hydrogen Fuel Cell Cars Most of the big auto makers have tried for years to develop a practical hydrogen fueled ICE. BMW, Merc, Honda, Toyota, etc, have all put $x billions into that idea and given up. Ther...
by Hillhater
Oct 16 2021 5:58pm
Forum: Alternative Energy
Topic: Hydrogen storage.....Solid State ??
Replies: 8
Views: 333

Re: Hydrogen storage.....Solid State ??

Air contains 0.00005% Hydrogen so finding metric tons in minutes from air at sea level would be a miracle and HUGELY windy. I guess it would probably need a hurricane/typhoon and a gigantic power supply. ....
....... Am I being cynical?
I think you should read the description again . !
by Hillhater
Oct 16 2021 4:52pm
Forum: EScooter/EMotorcycle Build Threads
Topic: RIPPY SCOOT
Replies: 30
Views: 801

Re: RIPPY SCOOT

Lol click on the map, its off Coffs Harbour at the time of writing this. Wow ! Spookey. Reading this at 08:30 Sunday after a trip to the beach at Batemans bay to spot Wales with Binoculars. And where is that ship at this very moment ?.......just off Batemans Bay !! :shock: So litterally just a few ...
by Hillhater
Oct 16 2021 4:36pm
Forum: EBike General Discussion
Topic: 1 month off-road trip in Chile : which ebike ?
Replies: 37
Views: 844

Re: 1 month off-road trip in Chile : which ebike ?

donn wrote:
Oct 16 2021 9:34am
...... for convenience of expression we tend to speak about it as if it's an invariant phenomenon.
?? Who is. “We” ?
And why is that any more convenient than just saying “drag” ? :roll:
by Hillhater
Oct 14 2021 5:26pm
Forum: EScooter/EMotorcycle Build Threads
Topic: RIPPY SCOOT
Replies: 30
Views: 801

Re: RIPPY SCOOT

Sorry 28 Oct. In 2012, when I ordered $12000 of LiPo cells from YGS, they came by air in about a week. Hmm, ? Probably not easy to airfreight a large quantity of lipo by air these days ! And it is a bad time to be shipping anything generally, as the sea freight industry is in turmoil at some key po...
by Hillhater
Oct 14 2021 12:52am
Forum: Items Wanted
Topic: Sourcing 21700 cells from Korea, Japan or China, 10,000 cells
Replies: 15
Views: 270

Re: Sourcing 21700 cells from Korea, Japan or China, 10,000 cells

The OP is asking for a wholesale seller recomendation.
Cell choice is a different question and depends on many factors we have not been informed of .
OP.. where do you live ?...USA, ?.Canada ?, . Europe, Asia, ?
by Hillhater
Oct 14 2021 12:17am
Forum: Battery Technology
Topic: Thread for new battery breakthrough PR releases
Replies: 1765
Views: 278763

Re: Thread for new battery breakthrough PR releases

Paywalled !
Anything revealing inside that article ?
by Hillhater
Oct 13 2021 5:23pm
Forum: Alternative Energy
Topic: World's most efficient wind turbine?
Replies: 27
Views: 532

Re: World's most efficient wind turbine?

These are all “fantasie” ideas that work to a limited extent... ..But are totally impractical for real world applications. Even the established commercial 3-5+ MW three bladed wind turbine generators have a limited application and will fade away as they age and more sensible power generation becomes...
by Hillhater
Oct 11 2021 10:51pm
Forum: Alternative Energy
Topic: World's most efficient wind turbine?
Replies: 27
Views: 532

Re: World's most efficient wind turbine?

topspeed wrote:
Oct 11 2021 1:32am
Big spinner also helps..but has to be counted in capture area as well.

miilun_spinneri.jpg
I have no idea what that is a photo of.......but i am sure it is not a wind turbine ?
by Hillhater
Oct 10 2021 8:14pm
Forum: Battery Technology
Topic: Thread for new battery breakthrough PR releases
Replies: 1765
Views: 278763

Re: Thread for new battery breakthrough PR releases

More on Lithium Sulphur ..and another player. “Lyten” who have been working in the background apparently on their “Military” developments ., 900Wh/kg ....”Lytcel” ! The “sweetened” LiSulphur cell is now proposed as a practical 500 Wh/kg , 1000cycle cell within 5 years :roll: https://youtu.be/mqH5yB9...
by Hillhater
Oct 10 2021 5:48pm
Forum: Bike Mechanical & Structural
Topic: Want to add rivnut, no space for drill.
Replies: 23
Views: 1077

Re: Want to add rivnut, no space for drill.

The battery will be fixed with 4 (yes! 4) m5 bolts as I"ve drilled an extra one inside the strange connector box at the rear.
That “strange box at the rear” ..is where some resellers fit the BMS &/or the Controller , for production Ebikes.
by Hillhater
Oct 08 2021 8:58pm
Forum: Large EV General Discussion
Topic: electric 306 conversion?
Replies: 1
Views: 111

Re: electric 306 conversion?

You need to talk to a specialist insurance broker,..one with experience of dealing with converted vehicles. FWIW... i doubt the original vehicle spec will have much influence on the final premium ! The usual factors that dominate premium costs are .. Driver record and age Home address Vehicle use Ex...
by Hillhater
Oct 06 2021 10:52pm
Forum: General Discussion
Topic: Hell of the North !...2021 Paris - Roubaix
Replies: 1
Views: 73

Hell of the North !...2021 Paris - Roubaix

Did anyone watch this classic cycle race last weekend ? Its an annual “classic” 260 km one day race over old cobble surface roads in France. Its always a dangerous race with road bikes at high speed on narrow rough cobbled roads.....but this year was the first time in 20 yrs that there was heavy rai...
by Hillhater
Oct 06 2021 10:08pm
Forum: Battery Technology
Topic: PAS level and battery range: is it normal?
Replies: 15
Views: 276

Re: PAS level and battery range: is it normal?

How come actual Wh is so much lower than advertised can I ask?.... Because they lie !....or at least use the most optimistic figure ! Really, for an ebike, the battery range can be infinite,...just depends on the pedal input of the rider The real consumer of power is speed...or to be precise wind r...
by Hillhater
Oct 06 2021 9:48pm
Forum: Battery Technology
Topic: Thread for new battery breakthrough PR releases
Replies: 1765
Views: 278763

Re: Thread for new battery breakthrough PR releases

Yes, as i said, that level of discharge power ..25+C has been available for many years in Lipo ( and LIfpo4).. ....but you have to consider discharge duration also. More energy density means longer discharge power periods....useful in racing. Also with current regulations, pack cycle life is importa...
by Hillhater
Oct 06 2021 7:07pm
Forum: Battery Technology
Topic: PAS level and battery range: is it normal?
Replies: 15
Views: 276

Re: PAS level and battery range: is it normal?

This can be a complex question with many details needed to answer. Most of your data is theoretical..IE “720 Wh” pack. Unless you do a capacity test, you do not know precisely what capacity you have available between “fully” charged and “nearly empty”. I guarantee it is not 720 Wh.....likely closer ...
by Hillhater
Oct 06 2021 6:26pm
Forum: Battery Technology
Topic: Thread for new battery breakthrough PR releases
Replies: 1765
Views: 278763

Re: Thread for new battery breakthrough PR releases

Interesting, but....they dont explain exactly what the big improvement in track performance was due to. The pack size & weight is unchanged (20-25 kg) and the max power drain is limited to 120 kW still. Unless Honda’s old (2015 !) pack design was way under power , i suspect that most teams can b...
by Hillhater
Oct 04 2021 5:43pm
Forum: Alternative Energy
Topic: Contra Rotating Diffuser and Shrouded Wind Turbine Design
Replies: 2
Views: 93

Re: Contra Rotating Diffuser and Shrouded Wind Turbine Design

Posting something multiple times, doesnt make it any more realistic !
by Hillhater
Oct 04 2021 5:31pm
Forum: Alternative Energy
Topic: World's most efficient wind turbine?
Replies: 27
Views: 532

Re: World's most efficient wind turbine?

.....the seemingly primitive water pump of 100 years ago is actually quite an efficient design ideally suited to it's purpose and highly relevant to wind power today. ....... You don't see it used simply because it's slow turning, everything today is aimed at directly producing electricity based on...
by Hillhater
Oct 04 2021 5:29am
Forum: Alternative Energy
Topic: World's most efficient wind turbine?
Replies: 27
Views: 532

Re: World's most efficient wind turbine?

Utter bull5hit!
Really sophisticated test proceedure !!!
Not even a mention of the generator itself ?
And a wind turbine like was used on remote properties to pump water 100 yrs ago
by Hillhater
Oct 02 2021 7:13pm
Forum: Large EV General Discussion
Topic: Volvo TGB20 6x6 military truck conversion
Replies: 9
Views: 328

Re: Volvo TGB20 6x6 military truck conversion

Axial motors seems capable of producing a lot of torque for their size. I wonder why they are not more commonly used?
Because they and suitable controllers are expensive.
by Hillhater
Oct 01 2021 12:07am
Forum: Battery Technology
Topic: Salvaged EV cells index: Leaf, Volt, Tesla, Zero, etc
Replies: 74
Views: 36226

Re: Salvaged EV cells index: Leaf, Volt, Tesla, Zero, etc

GM Bolt pack/ cell info..
I found a interesting source here....
https://www.techinsights.com/blog/revie ... powertrain
With detail look at the LG pouch cell cross section..
Image
Image
by Hillhater
Sep 30 2021 10:37pm
Forum: Large EV General Discussion
Topic: Volvo TGB20 6x6 military truck conversion
Replies: 9
Views: 328

Re: Volvo TGB20 6x6 military truck conversion

So what drive train would be best suited for this kind of vehicle? (I guess its a good idea to keep the gearbox and make an adapter plate). Yes !..the best transmission/drivetrain is the original one designed for the vehicle,. Just change out the petrol motor for an electric one. ..kW are kW and Nm...
by Hillhater
Sep 30 2021 8:31pm
Forum: E-Vehicles General Discussion
Topic: C Cab Hot Rod Power Advice
Replies: 574
Views: 35044

Re: C Cab Hot Rod Power Advice

Just_Ed wrote:
Sep 29 2021 7:20pm

Vroom like this...https://www.youtube.com/watch?v=tYFFev7 ... 24&index=2
Perfect !
Now just get that soundtrack onto your phone,..add a healthy BT amp/ speaker to the rig,...and you are set to roll :bigthumb: