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Forum: Electric Propulsion (EP)

17-03-2016, 09:10

Replies: 74

Electric Outboard Motor

Views: 13,397

Posted By valhalla360

Re: Electric Outboard Motor

Reality is electricity has proven very difficult to bottle. Until we have a cost effective way to bottle it, electric will remain a niche technology for transportation.

There are a few use...

Forum: Electric Propulsion (EP)

16-03-2016, 14:15

Replies: 74

Electric Outboard Motor

Views: 13,397

Posted By valhalla360

Re: Electric Outboard Motor

Another manipulation of the facts to get the desired answer.
- Your average car goes thru upwards of 500 gallons per year vs 5-10 gallons for a typical small outboard (full time cruisers are...

Forum: Electric Propulsion (EP)

16-03-2016, 04:47

Replies: 74

Electric Outboard Motor

Views: 13,397

Posted By valhalla360

Re: Electric Outboard Motor

The sad thing is overselling undermines use cases that are viable and cost effective.

You are seeing it with electric cars trying to match gas cars for range. Rather than selling a commuter car...

Forum: Electric Propulsion (EP)

15-03-2016, 13:36

Replies: 74

Electric Outboard Motor

Views: 13,397

Posted By valhalla360

Re: Electric Outboard Motor

This is about selling the green dream and people wanting to believe. It's really common in eco-business. There is a large section of the population who wants to believe so bad that they will accept...

Forum: Electric Propulsion (EP)

15-03-2016, 08:23

Replies: 74

Electric Outboard Motor

Views: 13,397

Posted By valhalla360

Re: Electric Outboard Motor

If you ask the LED bulb manufacturers, they will happily provide the test results and as you say it's easy to conduct an objective test. (been thru this 10yrs ago when I was responsible for...

Forum: Electric Propulsion (EP)

15-03-2016, 06:11

Replies: 74

Electric Outboard Motor

Views: 13,397

Posted By valhalla360

Re: Electric Outboard Motor

If the 10kw torqueedo really matched the 20hp Honda (pick a brand), does anyone really think they wouldn't post graphs and figures using standard test methods comparing them head to head instead of...

Forum: Electric Propulsion (EP)

14-03-2016, 08:25

Replies: 74

Electric Outboard Motor

Views: 13,397

Posted By valhalla360

Re: Electric Outboard Motor

Pick your ideal prop and you can do the same thing with a diesel and a reduction gear.

Yes, a large prop is more efficient but it's hull design that typically limits prop size not the ability...

Forum: Electric Propulsion (EP)

14-03-2016, 08:24

Replies: 74

Electric Outboard Motor

Views: 13,397

Posted By valhalla360

Re: Electric Outboard Motor

Incandesant vs LED use the same power source so efficiency provides a direct benefit.

Electric motor vs Diesel motor use totally different power sources, so the massively more dense fuel source...

Forum: Electric Propulsion (EP)

14-03-2016, 07:36

Replies: 74

Electric Outboard Motor

Views: 13,397

Posted By valhalla360

Re: Electric Outboard Motor

Electric cars have totally different performance requirements that do favor the low end torque of electric motors.

60-70hp is plenty to keep a compact car doing 75mph on a freeway uphill or...

Forum: Electric Propulsion (EP)

12-12-2015, 20:00

Replies: 74

Electric Outboard Motor

Views: 13,397

Posted By valhalla360

Re: Electric Outboard Motor

The reminds me of a Dilbert thread where it ends with the engineering department launching an attack on the marketing department for promising a product that can never be built (at least not at...

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