Search found 2297 matches

by gogo
May 27 2019 10:04am
Forum: Battery Technology
Topic: end cells always fail first, why?
Replies: 15
Views: 655

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: 254

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: 736

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: 736

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: 736

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: 736

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: 168

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: 3184

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: 1162

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: 1162

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: 1671

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: 3894

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: 540

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: 717

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: 1431

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: 1854

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: 4217
Views: 156204

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...
by gogo
Jul 13 2018 2:03pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 4217
Views: 156204

Re: Wind and Solar vs Coal, Gasoline, Nuclear

… Many new cars sold today will still be on the road in 15 years. It will all be driven by economics. As fuel outlets diminish, fuel will be delivered by electric autonomous vehicles for a few years. The quick changeover from horses to ICE is an analogous and cogent example of what is about to happ...
by gogo
Jul 13 2018 10:09am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 4217
Views: 156204

Re: Wind and Solar vs Coal, Gasoline, Nuclear

… There's also talk of pulling forward the ban on sales of ICE cars from 2040 to 2030 or 2025 (2040 was always a pretty weak effort). The change will come, grumpy old obstructionists or not! All ICE will be gone from the roads by 2032 according to the futurist Tony Seba: Tony Seba: Clean Disruption...
by gogo
Jul 11 2018 5:56pm
Forum: E-Bike Non-hub Motor Drives
Topic: Mongoose CX24V450 with 2500 watt L-R Small Block
Replies: 52
Views: 5836

Re: Mongoose CX24V450 with 2500 watt L-R Small Block

I've got one on the way and have a stock Currie motor to use for a comparison. I'm planning on posting the comparison.
by gogo
Jun 21 2018 9:49am
Forum: E-Bike General Discussion
Topic: proposed 25% tariff on ebikes
Replies: 16
Views: 859

Re: proposed 25% tariff on ebikes

markz wrote:
Jun 20 2018 12:13pm
Just have to wait Trumps term out a bit longer (1.5yrs) until Tuesday, November 3, 2020.
Will you be time traveling for the other year? Can I go with?
by gogo
May 31 2018 7:52am
Forum: Motor Technology
Topic: Magnax, new axial flux motor
Replies: 16
Views: 1691

Re: New axial flux motor development

https://newatlas.com/magnax-axial-flux-electric-motor/54821/ Note: there are graphics and videos at the link site (along with adverts I didn't care about). After nearly a decade in development, Belgian startup Magnax claims it has developed an ultra-high power, lightweight, compact axial flux elect...
by gogo
May 14 2018 9:08am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 4217
Views: 156204

Re: Wind and Solar vs Coal, Gasoline, Nuclear

https://www.yaleclimateconnections.org/2018/05/cracking-a-climate-conundrum/ “Previous studies suggested a single dominant process determined the year-to-year variability in Earth carbon cycle,” says Liu. “That’s not supported.” Gosh, a central premise of the Henny-Penny consortium is found to be "...
by gogo
Apr 15 2018 2:30pm
Forum: General Discussion
Topic: BBSHD and Sturmey Archer S2K 2 Speed Kick Shift Disc Brake Rear Hub
Replies: 4
Views: 522

Re: BBSHD and Sturmey Archer S2K 2 Speed Kick Shift Disc Brake Rear Hub

Can the BBSHD freewheel to allow backwards chain travel for shifting? Do you have a plan for how you would make the chain 'kick' backwards to actuate the shift(s)?