Search found 2304 matches

by gogo
Oct 01 2019 1:40am
Forum: Motor Technology
Topic: How to limit current of controller?
Replies: 14
Views: 364

Re: How to limit current of controller?

A 3-speed throttle modifier might help you to use less throttle.
by gogo
Sep 15 2019 4:29am
Forum: Battery Technology
Topic: When to charge the acid battery properly?
Replies: 82
Views: 1274

Re: When to charge the acid battery properly?

This is the battery. It is written on it "itinitial current: less than 3A" Will it not damage it with 5A? If you're referencing desulfation, that only works with flooded batteries, not the sealed ones you're using. - Are you saying that my battery does not need desulfation? And this is only require...
by gogo
Sep 14 2019 9:52pm
Forum: Battery Technology
Topic: When to charge the acid battery properly?
Replies: 82
Views: 1274

Re: When to charge the acid battery properly?

borko444 wrote:
Sep 14 2019 3:23pm

Maybe after a year, after depreciation, the batteries will need charging and sulfation.
If you're referencing desulfation, that only works with flooded batteries, not the sealed ones you're using.
by gogo
Aug 31 2019 9:02pm
Forum: E-Bike General Discussion
Topic: dynamo on a bike
Replies: 29
Views: 1050

Re: dynamo on a bike

seems I remember a guy out of Germany who had a bike that could 50 miles a hour by peddling I haven't found that vid in a while now I guess 7 years but he had a nice concept he was trying get a patent for it. he probably sold it . now its buried guess getting a bigger battery is the only way You ar...
by gogo
Jul 05 2019 10:07pm
Forum: E-Bike General Discussion
Topic: Vanishing Rubber Cement (Patch Kit)
Replies: 28
Views: 849

Re: Vanishing Rubber Cement (Patch Kit)

They have those tiny single-use tubes of super glue at the dollar store 4/$1. Seems like it shouldn't be difficult to do the same thing with patch cement.
by gogo
Jun 27 2019 10:36pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5284
Views: 211791

Re: Wind and Solar vs Coal, Gasoline, Nuclear

furcifer wrote:
Jun 27 2019 7:11pm
Cows on the other hand... :mrgreen:
Gary Larson tried to warn us about the Cow problem.
by gogo
Jun 27 2019 8:10am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5284
Views: 211791

Re: Wind and Solar vs Coal, Gasoline, Nuclear

1 billion light vehicle cars and trucks on the road in the world right now. Do we really think it is feasible to have 1 billion electric cars and trucks with 60 kWh batteries or larger? Nope. To a large degree, the requirement for larger batteries now is due to the lack of charging stations. More c...
by gogo
May 27 2019 10:04am
Forum: Battery Technology
Topic: end cells always fail first, why?
Replies: 15
Views: 919

Re: end cells always fail first, why?

A thermal imaging camera might be helpful in collecting information.
by gogo
May 24 2019 10:32pm
Forum: Resources & EV Related Parts and Services
Topic: Ebike Test Lab - new review website
Replies: 3
Views: 552

Re: Ebike Test Lab - new review website

Looks great, I certainly like the concept as explained on your 'why' page.

Can you include initial thrust in your measurements?
by gogo
Apr 25 2019 9:37am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Buell Fuell Flow motorcycle
Replies: 18
Views: 1083

Re: Buell Fuell Flow motorcycle

I wonder how useful the rear camera is.
by gogo
Apr 20 2019 6:56pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Buell Fuell Flow motorcycle
Replies: 18
Views: 1083

Re: Buell Fuell Flow motorcycle

I suspect the pics are CGI and may be leaving details, like the actual cover, out. [EDIT] I'm wrong, the Fuell website linked in a post below has a video of an actual machine in action. It also lists the motor as proprietary, so I'd hope Buell isn't risking his reputation on a motor prone to overhea...
by gogo
Apr 19 2019 10:08pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Buell Fuell Flow motorcycle
Replies: 18
Views: 1083

Re: Buell Fuell Flow motorcycle

why build another electric bicycle that looks like a motorcycle or scooter? 1kw battery and a 500w motor :roll: for over 10 grand?! No thanks. the bicycle looks good but that anemic little motorcycle wannabe is super lame. 500W and 1kWh are specs for the upgrade bicycle ($ unspecified), not the $11...
by gogo
Apr 01 2019 10:45am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Buell Fuell Flow motorcycle
Replies: 18
Views: 1083

Buell Fuell Flow motorcycle

https://www.forbes.com/sites/billroberson/2019/03/31/maverick-motorcycle-engineer-erik-buell-goes-electric-with-new-fuell-ebike-startup/#d826c5a1e7bd fuell.jpg Erik Buell is go-fast guy and a living legend in the world of performance motorcycles, and ten years after his association with Harley-David...
by gogo
Apr 01 2019 10:43am
Forum: E-Bike General Discussion
Topic: Buell Fluid ebike
Replies: 1
Views: 213

Buell Fluid ebike

https://www.forbes.com/sites/billroberson/2019/03/31/maverick-motorcycle-engineer-erik-buell-goes-electric-with-new-fuell-ebike-startup/#d826c5a1e7bd flow.jpg Erik Buell is go-fast guy and a living legend in the world of performance motorcycles, and ten years after his association with Harley-Davids...
by gogo
Feb 23 2019 11:02am
Forum: E-Vehicles General Discussion
Topic: ICE vs Electric Motor Transmissions
Replies: 81
Views: 4826

Re: ICE vs Electric Motor Transmissions

As far as I understand it, if you want better acceleration and speed it is better to put the extra complexity, cost and weight in a bigger/stronger electric motor, controller and battery then in a gearbox. Go tell the EV drag racers. 'Big Daddy' Don Garlits uses single ratio drivetrains on both his...
by gogo
Nov 17 2018 4:25pm
Forum: E-Bike Technical
Topic: Controller current draw vs. motor current draw
Replies: 6
Views: 1254

Re: Controller current draw vs. motor current draw

Just double checking here: 4% grade and not 4 degrees? If Grin calculated using 4 degrees, then 3 modules would be more righter.
by gogo
Nov 17 2018 8:35am
Forum: E-Bike Technical
Topic: Controller current draw vs. motor current draw
Replies: 6
Views: 1254

Re: Controller current draw vs. motor current draw

Can you take a screen shot of the simulation, or give the parameters you used? 357W to go up a 'hill' sounds low.
by gogo
Oct 30 2018 9:12pm
Forum: E-Vehicles General Discussion
Topic: What happened to Nikola One Semi?
Replies: 35
Views: 2153

Re: What happened to Nikola One Semi?

Once drivers are eliminated, the need for 'big' rigs will only be for things that can't be broken into smaller pieces.
by gogo
Sep 19 2018 11:24pm
Forum: E-Bike General Discussion
Topic: Arizona Electric Bicycle Law changes (2017)
Replies: 68
Views: 4458

Re: Arizona Electric Bicycle Law changes (2017)

billvon wrote:
Sep 19 2018 11:46am
(do they even make bike dynos?)
Put a card in the spokes and then use a sound editing program to map distance/time. Plug weight into the equation and there's your dyno.
by gogo
Sep 04 2018 6:29pm
Forum: Alternative Energy
Topic: Series Connected FLA's not Charging Uniformally
Replies: 6
Views: 723

Re: Series Connected FLA's not Charging Uniformally

Temperature. The center batteries can't shed heat as well as the end batteries. Warmer batteries will show a higher voltage. When temperatures equalize, so do voltages. There are charts showing what the charging voltage needs to be according to temperature. Cold batteries need less voltage during ch...
by gogo
Aug 11 2018 9:58am
Forum: E-Bike General Discussion
Topic: Smallest controller?
Replies: 11
Views: 950

Re: Smallest controller?

The Phaserunner and most other potted controllers are small. I have a potted controller that's the size of a pack of cigarettes.
by gogo
Aug 04 2018 9:30pm
Forum: E-Bike Technical
Topic: Electroplating copper with pure nickel (PICS)
Replies: 42
Views: 1852

Re: Electroplating copper with pure nickel (PICS)

You might try copper clips?
by gogo
Jul 23 2018 8:08am
Forum: E-Bike Non-hub Motor Drives
Topic: Dome Motors 600W mid drive kit
Replies: 13
Views: 2082

Re: Dome Motors 600W mid drive kit

I've got one on the way and will do a comparison with the Currie motor.
by gogo
Jul 13 2018 3:26pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5284
Views: 211791

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Fuel outlets will not diminish until after liquid fueled vehicles diminish. The liquid fueled vehicle quickly replaced the horse since they quickly became much more useful for transportation than a horse. Useful = $. Fuel outlets will diminish as soon as its cheaper to deliver the fuel to the ICE v...