Submitted by nasukaren on Sun, 12/14/2008 - 09:05
I'm posting new entries on my continuing Boxer-EV saga on my own personal website blog: http://gpsy.com/ev/
Why? It's easier to post new entries using my desktop blog client (MarsEdit) and the VisForVoltage website is occasionally verrrrryyyy slow which is frustrating.
So please visit my site (http://gpsy.com/ev/) for further updates!
Submitted by nasukaren on Sat, 08/30/2008 - 11:03
Base Unit
Piaggio Boxer (1971)
- 50 cc 2-stroke internal combustion engine (removed)
Electric Motor
HXT 80-100-B 130Kv Brushless Outrunner from United Hobbies (link)
Electronic Speed Controller
Castle Creations Phoenix HV-110 (link)
Throttle
Magura 0-5K Potentiometer throttle
Submitted by nasukaren on Sat, 08/30/2008 - 05:07
My replacement servo-tester finally came in yesterday (a saga in itself). I immediately tore it apart and replaced the potentiometer in it with a cable so that it could plug into my Magura throttle. The design of this replacement looks very simple. All discrete components: a 555 timer IC, rectifier, and some caps. I think I'll try to reverse engineer it so that I can just build it myself next time.
Submitted by nasukaren on Sat, 08/09/2008 - 19:43
Let's see if inserting this Youtube code will work.... my friend Dave from the NEEAA giving my little Boxer a spin.
Submitted by nasukaren on Fri, 08/08/2008 - 03:40
Here are some pics of the low-voltage converter that I created using the National Semiconductor LM2576HVT-12-ND buck-converter. The chip pretty much did everything for me -- all I had to do was to add two power-smoothing caps, a blocking diode, and a RF choke (which I mistaking undersized; promptly blew up and which I jerry rigged a loop of wire).
Submitted by nasukaren on Mon, 08/04/2008 - 04:17
On Sunday, I finished making the bearing mount on the right side of the motor spindle. This will help take a lot of strain off the bearings on the motor and prevent it twisting out from the torque. Also, I shimmed the front pulley with the thin metal from an aluminium can -- it was just perfect to close the gap between 12.5 mm and 12.0 mm. As a result, the motor is working much quieter now -- I just love the sound it makes when it accelerates -- gotta post a video.
Submitted by nasukaren on Sat, 08/02/2008 - 17:45
I put the Phoenix HV-110 ESC in the same aluminium project box that houses my low-voltage electronics. I mounted a temperature controlled CPU fan on it and ran the fan off the 12V line on the low-voltage converter.
The fan was in a "blow" configuration but I think I will change it to a "suck" config as I think that is more efficient for this type of fan.
Submitted by nasukaren on Fri, 08/01/2008 - 22:11
My replacement ESC from Castle Creations (the Phoenix HV-110A) finally arrived today, along with a Castle Creations USB programmer for it. The Phoenix HV-110A is considerably beefier than the ELF controller that I burned out. I reprogrammed the Phoenix using the very nice USB programmer (notably: BRAKING off) and installed it onto my Piaggio.
If you have the right QuickTime codec installed, you can watch a very boring video of my biking revving up to speed.
Submitted by nasukaren on Mon, 07/28/2008 - 17:35
This is definitely not my karmic week. After burning out my ESC Friday, I was playing around with my e200 today and dropped my bike chain on my Doc Wattson. It fell on the LCD in a bad way and it cracked the LCD. Sigh...
Fortunately my credit card company has purchase protection, so I filed a claim with them. But it still means I gotta go order a new one.
And next time it comes, I'm putting a lexan cover over the LCD.
Phooeey!
Submitted by nasukaren on Sat, 07/26/2008 - 19:21
Today I visited my local flea market and picked up a real find. A used Razor e300 (or maybe e200, not sure) electric scooter with charger for the unbelievable price of $25.
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