Search found 9645 matches

by Hillhater
Jun 18 2021 6:54pm
Forum: General Discussion
Topic: Lightweighting and aerodynamic optimization of a subcompact car.
Replies: 100
Views: 2131

Re: Lightweighting and aerodynamic optimization of a subcompact car.

Back to your first issue of cutting lots of thin metal , plastics etc.. Dremmels are hobby tools, toys really compared to workshop equipment. Air tools are the professional solution, but you are “tied” to the shop or length of airline for use. For cutting metal (sheet or anything up to 2” tube) , it...
by Hillhater
Jun 17 2021 9:27pm
Forum: Motor Technology
Topic: Tesla model S plaid motor 30 lbs, 400 hp perfect high power ebike motor?
Replies: 10
Views: 421

Re: Tesla model S plaid motor 30 lbs, 400 hp perfect high power ebike motor?

Its always a trial watching Musks Tesla presentations to filter out the facts from the predictions, speculation, teasers, and plain BS. Did anyone figure out the rear dual motor drive train ? For torque vectoring it must have separate motor to wheel transmissions,.so dual gear trains ...9.7 :1 reduc...
by Hillhater
Jun 15 2021 7:11pm
Forum: Large EV General Discussion
Topic: Electric kart
Replies: 233
Views: 48388

Re: Electric kart

Why not just force the cooling air through a “bed” of dry ice (solid CO2) before it get to the rotor. Much more volume of cold CO2 / + chilled air that way Or, For the water misting, direct into the rotor cooling air. Intermittent spray depending on temp or motor load ? If you use distilled water it...
by Hillhater
Jun 14 2021 2:23am
Forum: Large EV General Discussion
Topic: Electric kart
Replies: 233
Views: 48388

Re: Electric kart

For serious heat dissipation (eg, on heavy truck brake rotors).. a water spray direct onto the heat sink area is very effective.
by Hillhater
Jun 13 2021 10:04am
Forum: Battery Technology
Topic: Thread for new battery breakthrough PR releases
Replies: 1690
Views: 271774

Re: Thread for new battery breakthrough PR releases

3.8ah from an 18650 .. Well i guess any increase is better than none,....
.... but it has been 10 years since we got the 3.4 ah version and over 5 yrs since the 3.5 ah became commercial.
I dont plan to hold my breath waiting fo the 5 ah 18650 !
by Hillhater
Jun 09 2021 6:05pm
Forum: Items for Sale - New
Topic: CHEAP NEW ORIGINAL 18650 BATTERY CELLS AND PACKS
Replies: 832
Views: 252784

Re: CHEAP NEW ORIGINAL 18650 BATTERY CELLS AND PACKS

Rather than wait for him to read the thread,...Why dont you PM him ?
by Hillhater
Jun 08 2021 6:29pm
Forum: Battery Technology
Topic: Fake samsung battery
Replies: 2
Views: 145

Re: Fake samsung battery

You should test, balance, and match, ALL cells,.....before assembling a pack.
by Hillhater
Jun 06 2021 9:54pm
Forum: Large EV General Discussion
Topic: Ford etruck F-150 Lighting - Opinions?-
Replies: 80
Views: 1442

Re: Ford etruck F-150 Lighting - Opinions?-

Found some more info:the battery range for the 230-300 batteries are EPA numbers with 1000lb payload.With a unloaded truck the 300 mile range battery goes to 460 miles. That is NOT what the EPA , or Ford, are saying......it just YouTube rumour based on a wild estimate from the onboard range predict...
by Hillhater
Jun 03 2021 6:04pm
Forum: E-Vehicles General Discussion
Topic: Racing go kart
Replies: 23
Views: 494

Re: Racing go kart

You've got a kart chassis? And where are you planning to run it, in competitions? E karts are something I can see taking off in a big way, we're around the tipping point where it's cheaper to build electric than IC for the same kind of performance. Ekarts are not new. There was a “European Electric...
by Hillhater
Jun 02 2021 11:38pm
Forum: Alternative Energy
Topic: Quick test for solar range extender
Replies: 2
Views: 124

Re: Quick test for solar range extender

I can see 1.5 amps being a useful addition for long trips or touring, but i cannot see a practical way of mounting a solar panel on a conventional bike. Has anyone considered mounting it like a “sunshade”, flat above the riders head ?...minimum windage, max sun. ...not really practical for a daily r...
by Hillhater
Jun 02 2021 11:28pm
Forum: E-Vehicles General Discussion
Topic: Racing go kart
Replies: 23
Views: 494

Re: Racing go kart

The dual motor set up could be a serious advantage in tight corners if you're able to split the the rear axle in the middle. So it can act like a limited slip differential where the inner tire can have a lower speed than the outside tire. That will make cornering easier and faster and will preserve...
by Hillhater
May 31 2021 11:38pm
Forum: Electric Watercraft
Topic: Update-1st electro cruise! New vid! Catalina 27 conversion
Replies: 24
Views: 770

Re: Update-1st electro cruise! Starting my Catalina 27 conversion

Is there any way to use that Minnkota for regen whilst you are under sail ? :wink:
by Hillhater
May 30 2021 6:18pm
Forum: Health and Food
Topic: Grills for Brisket
Replies: 0
Views: 49

Re: Grills for Brisket

Smoking is not just about flavor. The smoke chemically reacts with the fats in the meat/fish/ other to tenderise the fibers. Time is also a key factor together with temperature control ( “Low and Slow”) A meat thermometer is very useful. Personally, i would say yes, you need to smoke over charcoal o...
by Hillhater
May 30 2021 7:42am
Forum: Electric Watercraft
Topic: Shamrock, 25 foot sailboat electric conversion with an ebike hub motor
Replies: 63
Views: 8494

Re: Shamrock, 25 foot sailboat electric conversion with an ebike hub motor

I just heard about that boat a couple of weeks ago, but it's gone around the world a couple of times, soooo...... Sooooo... thousands of boats have gone around the world... ( and without stopping too) ..using nothing but wind power ! ... but i would like to know how much of the Energy Observer’s tr...
by Hillhater
May 29 2021 11:59pm
Forum: Electric Watercraft
Topic: Shamrock, 25 foot sailboat electric conversion with an ebike hub motor
Replies: 63
Views: 8494

Re: Shamrock, 25 foot sailboat electric conversion with an ebike hub motor

....... I could def see trans ocean solar racing being a thing though! Until battery tech/ (energy density)..”tx Ocean Solar” will be little more than a demo exercise for the rich. I suspect Wind will remain the dominant fuel for ocean racing for a long time yet. Sorry, slightly off topic, but here...
by Hillhater
May 29 2021 10:28pm
Forum: Large EV General Discussion
Topic: Ford etruck F-150 Lighting - Opinions?-
Replies: 80
Views: 1442

Re: Ford etruck F-150 Lighting - Opinions?-

Kauai use to have high utility prices but now our power per Kw has been going down steadily so I’m good with the outcome.Other utility’s could learn from Kauai. Your prices are coming down from what was a diesel fueled system (using imported fuel) , to a compact “micro grid” of Utility Solar/ batte...
by Hillhater
May 29 2021 6:34pm
Forum: Battery Technology
Topic: The case for using Supercapacitors with Lithium-Ion batteries in EV's
Replies: 19
Views: 446

Re: The case for using Supercapacitors with Lithium-Ion batteries in EV's

The gains are minor in a vehicle that already has more performance than most of its owners can use safely. This type of performance enhancement is probably only of interest to anyone considering a competition program..race, rally, drag strip, etc. Maybe you can propose an application that improves r...
by Hillhater
May 28 2021 7:49pm
Forum: Large EV General Discussion
Topic: Ford etruck F-150 Lighting - Opinions?-
Replies: 80
Views: 1442

Re: Ford etruck F-150 Lighting - Opinions?-

Where I live( Kauai, Hawaii)our power grid is 100% renewable energy for the last 4yrs in the day time and about 50% at night.Kauai’s plan is to be totally renewables by 2030( Kauai’s power is a publicly owned utility),so for me The Ford electric makes a lot of sense and on Kauai as your not going t...
by Hillhater
May 28 2021 6:01pm
Forum: General Discussion
Topic: by ezoo » Feb 06 2021 5:29pm I hear about this everywhere I go to shop for bicycle parts:
Replies: 11
Views: 504

Re: by ezoo » Feb 06 2021 5:29pm I hear about this everywhere I go to shop for bicycle parts:

Due to the lack of parts and “manual” bikes generally,.. My lbs believes the big name manufacturers have diverted available resources To the production of high value Ebike brands ,...which are seeing a massive increase in sales and are more readily available......if you have $8-12k spare !
by Hillhater
May 26 2021 11:05pm
Forum: Large EV General Discussion
Topic: Ford etruck F-150 Lighting - Opinions?-
Replies: 80
Views: 1442

Re: Ford etruck F-150 Lighting - Opinions?-

you are confusing purchase price with marginal costs of operation....
No, ..But you are confusing free Sunshine with electricity ! :wink:
by Hillhater
May 25 2021 9:11pm
Forum: Battery Technology
Topic: Thread for new battery breakthrough PR releases
Replies: 1690
Views: 271774

Re: Thread for new battery breakthrough PR releases

What I don't get about all these battery claims is in this day and age they should be able to provide a cell engineering sample that is still in their own lab but allow one of the 100s of tech YouTubers out there like Adam Savage etc to go into the lab with their own everyday watt-hour meter and ju...
by Hillhater
May 25 2021 8:51pm
Forum: Large EV General Discussion
Topic: Ford etruck F-150 Lighting - Opinions?-
Replies: 80
Views: 1442

Re: Ford etruck F-150 Lighting - Opinions?-

How cheap solar? $50 for 250 watts :shock: (used) https://www.youtube.com/watch?v=c-auRHKq2-A&ab_channel=DIYSolarPowerwithWillProwse OK so you get $1000 worth (5kW) of panels.. You need to mount and wire them up ...another $1k ? And install some cheap inverter/ charge controller (5kW) ..another...
by Hillhater
May 24 2021 8:44pm
Forum: EScooters/EMotorcycles
Topic: My new electric motorcycle
Replies: 13
Views: 672

Re: My new electric motorcycle

:shock: :shock: .. Alibaba... :o ...keep us posted !
..fingers legs and toes all crossed for a good outcome ! :bigthumb:
by Hillhater
May 24 2021 7:32pm
Forum: Large EV General Discussion
Topic: Ford etruck F-150 Lighting - Opinions?-
Replies: 80
Views: 1442

Re: Ford etruck F-150 Lighting - Opinions?-

Let's say, for example, you invented a home brewing system that produced beer out of air with no material or energy input. It might well have cost a lot to develop - but after developing it, it would provide you with free beer. Even using “, no cost” consumables, you would have to completely forget...
by Hillhater
May 24 2021 4:06pm
Forum: Large EV General Discussion
Topic: Ford etruck F-150 Lighting - Opinions?-
Replies: 80
Views: 1442

Re: Ford etruck F-150 Lighting - Opinions?-

...?? Interesting,.tell me where you can get a suitable ..5-10kW ?...solar set up for free ? ... Fascinating that you spent the time to write out that answer, but did not take the time to read his post where he used the word "cheap!" And equally facinating that you avoided the part where ...