| Owner | Steve Erisman | ||||||
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| Owner's Other EV | Giant ATX 860 eBike Conversion (v2.0) | ||||||
| Location | Libertyville, Illinois United States map | ||||||
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| Vehicle | GIANT ATX 860 | ||||||
| Motor | 48V 1000W Brushless Hub Motor Brushless DC Part of this kit: WebPage This appears to be the same moter: WebPage /> ?id=97 | ||||||
| Controller | 48V 1000W 20A Part of this kit: WebPage | ||||||
| Batteries | 4 CSB UB12180, 12.00 Volt, Lead-Acid, AGM Note: These batteries have been sitting around for a while, but tested to 11 Ah with a 10 Amp load. | ||||||
| System Voltage | 48 Volts | ||||||
| Charger | 48V 2.5A Part of this kit: WebPage | ||||||
| Heater | wear a jacket | ||||||
| Instrumentation | standard bike computer | ||||||
| Top Speed | 29 MPH (46 KPH) Note: This was achieved with electric power only. At this speed the pedals no longer help with my current gearing. | ||||||
| Range | 15 Miles (24 Kilometers) Note: Largely depends on speed and how much pedal assist | ||||||
| Watt Hours/Mile | 20 Wh/Mile Note: Largely depends on speed and how much pedal assist | ||||||
| EV Miles |
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| Seating Capacity | 1 adult | ||||||
| Curb Weight | 100 Pounds (45 Kilograms) Note: The batteries add 60 lbs. The motor probably adds 10 lbs. | ||||||
| Tires | road tires | ||||||
| Conversion Time | 6 hours Note: most of this time was me fixing a leaky tube and then trying to figure out the best arrangement of items on the handlebar. Otherwise, the actual conversion could have easily been done in 1-2 hours. | ||||||
| Conversion Cost | $275 for the conversion kit: WebPage I already had the bike and batteries. New, the batteries would cost around $35 each or $140. | ||||||
| Additional Features | Overall I am really impressed with the speed/power of this setup. It is really fun to ride this. I am hoping to start using this for my daily commute (7 miles each way). It will probably take around ~6 cents of electricity (per day) vs. ~$2 in gas. I will charge at both ends to ensure the batteries aren't too deeply discharged. Eventually I would like to replace the VERY HEAVY lead-acid batteries with a Lithium Ion battery pack of some sort. | ||||||
| 6/19/2013: Over 500 EV miles logged so far! I have been riding this to work and back (~15 mile round trip) about 4 times a week on average, for the last 2 months or so. The battery pack is starting to show some signs of age where occasionally the last mile or two I am running on less than 1/2 power. Also the rear rack is bending due to the extreme weight of the lead acid batteries. I am still hoping to switch to lithium ion batteries at some point in the next couple of months. 7/25/2013: Version 1 has been retired after about 700 EV miles. The rim that came with the hub motor kit wasn't good quality, or wasn't built right, and ended up with some hairline cracks and dented sidewalls. Also, the battery was down to about 3 Ah @ 10 A (from 11 Ah @ 10 A) and started cutting out after about 5 miles, and the rear rack cracked (due to the extreme battery weight). Some capacity was regained after using a custom built desulfator for a week per battery (immediately followed by a full charge), but the decision to go Lithium Ion had already been made. 8/28/2013: Version 2 will be posted soon and includes the following upgrades: * upgraded to Lithium Ion battery pack (14 lbs in a triangle bag instead of 60 lbs over the rear wheel). 50 V 18.5 Ah with 5 A charger. * rebuilt the rear wheel with a Alex DM24 rim and Sapim 13/14 single butted spokes. * enabled cruise control on the controller * upgraded the freewheel with a 7-speed that has an 11t gear (enabling decent pedal assist at up to 24 mph) * new pedals with half toe clips * new soft grips These updates make the bike feel and handle completely differently and much closer to a normal bike. | |||||||
Giant ATX 860 eBike Conversion (v1.0)
Last Updated 08-28-2013
Copyright © 1997-2024 by Mike Chancey