I then have a parallel harness I made that plugs into the Hyperion so I can charge both 12s packs at once, with parallel connectors for the balance taps too. My charger only charges up to 14s at a time, so until I get another one to link them together I break the 24s pack in half into two 12s packs. If they look good, I then build the pack. When I first get new batteries I run each through three discharge/charge/balance cycles to check for any bad cells. I use a Hyperion 1420i to charge my lipos. A whole bunch of miscellaneous connectors, velcro, fuse holder, kill switches.Ĭlick to expand.Thanks for the vote of confidence! It was definitely a fun build and a blast to ride. Lyen 12fet controller and mounting plate 12 gauge spokes on the rear, 14 gauge up front Weinmann DH-39 wheels with Cyclops CST Pro rubber 12 x 4s 5AH lipo batteries, 24s2p 10AH total, 89V nominal, 98V hot off the charger So overall, this build cost me around $1,100, which was almost exactly what my gas bike build cost! I noticed it got really warm even on my short run, but it was close to 100 degrees outside at the time. Next up is to clean up the wiring, install lights on the front and back, make some sort of protective covering for the batteries, and possibly fans to help cool the controller. For giggles on the shakedown run I had to see what she had to give, I backed off at 47 MPH when I ran out of straight road! While I know spending much time in that range will kill the motor, I had to do it, just had to The neighborhood speed limit is 25 MPH, and the road to downtown is 35 MPH, which she does comfortably. I just got her running yesterday so only put about 5 miles on her, which included an errand up to Walgreens, but I could not be happier with this as my first hub build. I LOVE riding this bike! I was afraid that with the cheaper, fast wind motor that I would not have enough low end torque. It is hard to tell in this picture but the round canister on the top bar is a spice tin my wife donated to house my controller on/off switch. I will probably have him make me a 60 degree later, but good enough for now. At first I was going to go with a cheaper unit, but since there was so much to love about the CA, I spent a little extra.Īnd that layback seat post, it is an 80 degree solid layback made by our own Inked1974. I am using a Cycle Analyst eBike computer to keep track of speed, Watts, AH used, etc. I mounted a set of clippers under the seat, so if there is an impending thermal event, I can clip the zip ties and toss the smoker (assuming I catch it in time). The batteries are attached with industrial strength velcro and then added zip ties for extra security. I like pegboard since it is easy to shape and the holes make for convenient mounting points. The mounting board for the batteries in the triangle is pegboard. It took longer since I am horrible at soldering, but I felt better about the project as a whole. I bought 10 gauge bulk wiring and 4mm bullet connectors and did the soldering myself this time, versus having someone make the harness for me like I did on the Mongoose. Then a few days later a 1999 Schwinn Cruiser Supreme popped up for $50, in great shape! While smaller framed than the Heavy Duti, it already had better brakes, 135mm rear dropouts (most hub motors are 135mm or 150mm), gears, etc. Repairable, but not the most desirable start. When I got it home, on closer inspection I found that the horrible paintjob was covering up cracks in the frame. I was originally going to go with an older steel mountain bike frame, like a 90's GT, but then a straight bar Schwinn Heavy Duti appeared on Craigslist that looked promising. Better and would do mid 20's (even hit 31 MPH once), but I was still dreaming of a little more, so the planning commenced. I went on to change out the rear freewheel and go to 36V lipo. I stumbled on a Mongoose CX24V450 on Craigslist and rode that around on 24V SLA for a while. While I loved motorized biking, there was a lot left to be desired with the HT build. Previously I had a 66cc 2 stroke cruiser that I really enjoyed riding around on errands, but the wrist pin bearing blew at around 400 miles. This build has been very slow going, months in the making, since I have been funding it with fixing and flipping scooters/minibikes/etc on Craigslist. Hi all! I finally got my bike rolling last weekend so figured it was time to start a build thread.
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