Showing posts with label cost. Show all posts
Showing posts with label cost. Show all posts

Wednesday, February 5, 2014

Musing Journal #5


Electric Bike Cost

If you have been following my posts, you know that I have been smitten by electric bikes. No wonder. They are clean, light, simple, and really a good transportation mode all around. The fact that I have bike path from the house really does seal the deal. There is only one problem: The cost.

Now, I can go buy myself a cute little red scooter for about $2000. A used one can be had for $1000. So, I really don't want to spend more money than $1000 for an electric bike. A scooter can get you places bikes can, faster and safer. Of course, there is the cost of ownership. Scooters costs more to insure and maintain. But let's face it, with 100 mpg effective expense, it just doesn't cost all that much.

But how about electric bikes? You can always pedal. Yes, that's true. But with regular bike, that's free. How about the cost of an electric bike? There have been a lot of calculations thrown about that says an electric bike gets an equivalent of 1000 mpg! Some people, in fact, attached the battery charging unit to solar cells. That's probably about 1 million mpg. How can a scooter beat that?

I'm not interested in calculating pedal power into the equation. So, first, I'm taking the range of motor only. Then I take the cost of purchasing replacement battery. Finally, I take the amount of recharging the batteries can take before losing capacity. So, the true mpg cost of an electric bike is Price of batteries / (mile per charge * number of charge). That gives you dollar per mile. A simple price check will give you dollars per gallon. That will give you mile per gallon figure.

In my calculation, I get about 80 mpg for electric bikes. So, that's slightly less than that of a scooter. I consider, cost wise, scooters and electric bikes are the same. Perhaps I will change my mind later, once the battery technology has improved much and gasoline cost more that it is now. However, that's some time in the future and for now, I will not buy an electric bike that costs more than $1000. I'd rather have a scooter!

Saturday, September 14, 2013

Raspberry Pi Journal #21

Cost of Ownership: Raspberry Pi

Raspberry Pi has been billed as the low-cost computer. When model A is priced at $25, and Model B is priced at $35, who can blame them? I bought mine at $40, due to mark up, but that's okay.

What I didn't count on, is that I will be getting multiple units. I have in my possesion 3 Model Bs, and 1 Model A. So, I was shopping peripherals last time. I looked at the total: $150. Ouch.

That does not compare with today, though. I actually bought a soldering kit + voltmeter unit because that Adafruit LCD w/ keypad unit comes in a kit!

I'm a dedicated software guy, and I'm buying a soldering kit! Talk about new experiences. So far, I have done back ups, bash scripting, and webcam. I'll be blogging those in the future. But hardware projects? Unthinkable!

Of course, I also purchased Lego Mindstorm EV3 robotic system. That's another $350 down the hatch.

So total purchase? $150+$350+$200, and total is $700! For Raspberry Pi projects. Sigh.

Well, at least that's it. No more hardware that I can think of.

Wait a minute. I have some idea about wiring up some large capacity capacitors so I can have a delayed power off for proper shutdown. Hmmm. I wonder how much those cost? ^_^;