MD.
1 W
Howdy Endless Sphere. Here's some pictures and information on my first e-bike build. I've got about 100 miles on and off road on the bike and it's been working great.
Here's the kit I installed on the bike. It's a 48v 1000w rear hub from eBay. After researching it a bit I believe it may be a sensored Aetoma or Wilderness Energy rear motor. I went with this kit because yescomusa.com was out of their 48v 1000w kit at the time I was ready to purchase. This seller was also in the USA and the price was right. I paid $253.95 shipped for the hub motor, controller, and thumb throttle. It arrived super fast and in great shape in about 3 days.
http://www.ebay.com/itm/-/110915630670
I had initially intended on installing this kit on a K2 Big Easy Duce cruiser/comfort bike I had at the time. This introduced my first challenge, drop out width. The drop out width of this motor is 150mm and the width on my cruiser was 130mm. After researching spreading the frame width and other options I decided that this might not be the right bike for this motor. I was planning on around 30 mph top speed. As I continued to read lots of threads on ES I began to realize that at those speeds, frame strength and brake power were very important. I then learned that some of the older DH/freeride MTB's had 150mm rear drop out width and/or removable drop outs. These bikes also were designed to be strong, tough, go fast, and stop quick at those speeds.
After scouring Craigslist I came across my perfect candidate. It's a 2006 Mongoose Black Diamond Single. This bike had great reviews and was priced right. They were asking $600. It was in excellent shape but needed a tuneup as it had not been ridden in a couple of years. I worked out a trade for some electronics I got for free and $300 cash. This bike has hydraulic disk brakes, removable rear drop outs, and is built like a tank.
http://www.bikepedia.com/Quickbike/BikeSpecs.aspx?Year=2006&Brand=Mongoose&Model=Black+Diamond+Single&Type=bike
Once I tuned up the bike I began mounting the motor. The model I purchased came with the 130mm rear drop outs. They do make a 150mm rear drop out for this model. They're called the "maxle" drop out kit. Instead of purchasing new drop outs, I just moved the drop out with the derailleur hanger from the inside of the frame to the outside. It was really easy to move the drop out once I figured out the bolts holding it was called a chainring bolt. With the drop out moved, the width was perfect and everything lined up properly.
The bike came with an 8 speed freewheel. I removed the 7 speed freewheel that came on the hub motor and added the 8 speed freewheel listed on this page. I also added the torque arms on this page on both sides. sdelectricbike.com is about 20 minutes from me and they're awesome in every way. If I was less of a DIY type of person I would have hired them for everything on this build. I created this build partially for the commute but mostly for the challenge and experience.
http://sdelectricbike.com/Accessories.html
The last problem I had to solve was mounting the batteries. I've been into RC for a couple of years so I already had a bunch of RC lipo experience. I started with 12s of 4s 20c HC lipo's. I think they were around $150 shipped from the USA warehouse for 6 4s lipo's. This gave me a total of 12s at 48v and 10ah.
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=18631
I liked the front pelican case mount some members have done on the DH/freeride bikes. Unfortunately, my bike just didn't have the right amount of room for it to work perfectly for me. Also I needed to be able to remove them easily. I'm paranoid and I keep my lipo's in my bbq at home and in a steel mailbox at work. I built a hard case saddle pack configuration out of two pelican type cases and some vinyl gutter tubing. This setup works great! It keeps the weigh up front and balanced, it's easy to install and remove, and it doesn't interfere with turning or peddling.
http://www.frys.com/product/6055058
I'm using this to mount my iPhone as a speedometer and GPS using the free iBike app. It was on sale at Fry's for like $20.
http://ibikesports.com/iPhone_bike_mount.html
I'm using this to check voltage, watts, amps, and amp hour usage. $24 from hobbypartz.com.
http://www.hobbypartz.com/26p-twometer.html
I'm using these tires with thorn resistant tubes. SCHWALBE 26X2.0 MARATHON GREENGUARD
http://www.amazon.com/gp/product/B0064FUVR2/
http://www.amazon.com/gp/product/B000AOA0KG/
Because of the speeds involved I wanted a good quality helmet. I'm using this Bell Drifter military style helmet. It matches the bike, it's comfortable, and good quality.
http://www.thebellstore.com/product/street-helmets-belldrifter/bellmchelmets-driftercombat.html
Here's pictures of the bike. Let me know what you guys think. Right now I'm running it at 15s lipo, 63v, and get around 28mph and 1ah per mile for a distance of 10miles. My commute to work is 5 miles one way. A lot is downhill and I peddle a lot so I only use about 7.5 ah round trip.
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View attachment 1
Here's the kit I installed on the bike. It's a 48v 1000w rear hub from eBay. After researching it a bit I believe it may be a sensored Aetoma or Wilderness Energy rear motor. I went with this kit because yescomusa.com was out of their 48v 1000w kit at the time I was ready to purchase. This seller was also in the USA and the price was right. I paid $253.95 shipped for the hub motor, controller, and thumb throttle. It arrived super fast and in great shape in about 3 days.
http://www.ebay.com/itm/-/110915630670
I had initially intended on installing this kit on a K2 Big Easy Duce cruiser/comfort bike I had at the time. This introduced my first challenge, drop out width. The drop out width of this motor is 150mm and the width on my cruiser was 130mm. After researching spreading the frame width and other options I decided that this might not be the right bike for this motor. I was planning on around 30 mph top speed. As I continued to read lots of threads on ES I began to realize that at those speeds, frame strength and brake power were very important. I then learned that some of the older DH/freeride MTB's had 150mm rear drop out width and/or removable drop outs. These bikes also were designed to be strong, tough, go fast, and stop quick at those speeds.
After scouring Craigslist I came across my perfect candidate. It's a 2006 Mongoose Black Diamond Single. This bike had great reviews and was priced right. They were asking $600. It was in excellent shape but needed a tuneup as it had not been ridden in a couple of years. I worked out a trade for some electronics I got for free and $300 cash. This bike has hydraulic disk brakes, removable rear drop outs, and is built like a tank.
http://www.bikepedia.com/Quickbike/BikeSpecs.aspx?Year=2006&Brand=Mongoose&Model=Black+Diamond+Single&Type=bike
Once I tuned up the bike I began mounting the motor. The model I purchased came with the 130mm rear drop outs. They do make a 150mm rear drop out for this model. They're called the "maxle" drop out kit. Instead of purchasing new drop outs, I just moved the drop out with the derailleur hanger from the inside of the frame to the outside. It was really easy to move the drop out once I figured out the bolts holding it was called a chainring bolt. With the drop out moved, the width was perfect and everything lined up properly.
The bike came with an 8 speed freewheel. I removed the 7 speed freewheel that came on the hub motor and added the 8 speed freewheel listed on this page. I also added the torque arms on this page on both sides. sdelectricbike.com is about 20 minutes from me and they're awesome in every way. If I was less of a DIY type of person I would have hired them for everything on this build. I created this build partially for the commute but mostly for the challenge and experience.
http://sdelectricbike.com/Accessories.html
The last problem I had to solve was mounting the batteries. I've been into RC for a couple of years so I already had a bunch of RC lipo experience. I started with 12s of 4s 20c HC lipo's. I think they were around $150 shipped from the USA warehouse for 6 4s lipo's. This gave me a total of 12s at 48v and 10ah.
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=18631
I liked the front pelican case mount some members have done on the DH/freeride bikes. Unfortunately, my bike just didn't have the right amount of room for it to work perfectly for me. Also I needed to be able to remove them easily. I'm paranoid and I keep my lipo's in my bbq at home and in a steel mailbox at work. I built a hard case saddle pack configuration out of two pelican type cases and some vinyl gutter tubing. This setup works great! It keeps the weigh up front and balanced, it's easy to install and remove, and it doesn't interfere with turning or peddling.
http://www.frys.com/product/6055058
I'm using this to mount my iPhone as a speedometer and GPS using the free iBike app. It was on sale at Fry's for like $20.
http://ibikesports.com/iPhone_bike_mount.html
I'm using this to check voltage, watts, amps, and amp hour usage. $24 from hobbypartz.com.
http://www.hobbypartz.com/26p-twometer.html
I'm using these tires with thorn resistant tubes. SCHWALBE 26X2.0 MARATHON GREENGUARD
http://www.amazon.com/gp/product/B0064FUVR2/
http://www.amazon.com/gp/product/B000AOA0KG/
Because of the speeds involved I wanted a good quality helmet. I'm using this Bell Drifter military style helmet. It matches the bike, it's comfortable, and good quality.
http://www.thebellstore.com/product/street-helmets-belldrifter/bellmchelmets-driftercombat.html
Here's pictures of the bike. Let me know what you guys think. Right now I'm running it at 15s lipo, 63v, and get around 28mph and 1ah per mile for a distance of 10miles. My commute to work is 5 miles one way. A lot is downhill and I peddle a lot so I only use about 7.5 ah round trip.
View attachment 4
View attachment 1
