I caught he EV bug about a year ago when I completed this build: http://endless-sphere.com/forums/viewtopic.php?f=35&t=20732
After a year of thrashing on this ESR w/ 80-100 and Kelly I found the setup to be VERY reliable. In fact I used 3 sets of SLA's (thank you batteries plus warranty) without one issue from my motor or controller. I am sold this is the driveline for my next EV.
Next I toyed around with what I want to actually accomplish with my next build. I am in college and my campus is about 4 miles away so I want to be able to comfortably commute on w/e I build. I thought about building my own frame, then I thought I had decided on converting a XC mtn bike. After alot of mental deliberation I came up with my final plan. A downhill/free mtb bike setup for the street/urban riding. This way I can comfortably ride to school and be able to drop stairs, hop curbs, rip through the dirt to pass ppl ect... After a good bit of searching through bikes I decided on this 2005 Kona Stinky. It is setup with the following components:
-Marzocchi Drop Off Tripple
-Fox DH3 rear
-Hayes 9 Brakes
-Sram X7 running gear
-Maxxis Hookworm 2.5" (sweet i dont have to get tires!)
Now for the power train. I use my toys often, no show queens here, and I dont like to clean/detail/rebuild stuff. This build will be BEEFY so I dont have to service it often. After I completed my E-scoot (ESR750 w/ brushless) I opened the deck maybe 6 times in a year, 3 of those times were to change the batteries. On this Kona I will be using the following components for the power train.
-Kelly 48201 sensored (carrying this over from my ESR)
-2X Turnigy 80-100B (in tandem on a common shaft)
-Custom 2:1 reduction box with straight cut gears incased in oil (I will be machining this part)
-Chain drive through the brake rotor mount (Combination rotor/chain ring I've heard ppl call it a Sprotor before)
-Custom brake caliper adapter with idlers for "Sprotor" setup (cnc plasma and some macining)
-10X Turnigy 6s 5000mah Long Packs for a 12s5p 44.4V 25ah pack
-Cycle Analyst (large Screen standalone model)
-Hyperion 1420i 14s 20a balance charger
-2X Hyperion EOS Sentry Cell monitors on board.
-Full LED light rig for brake light, turn signals, running lights, Backlights ect. (I plan on making a circuit to control all of these)
-2X 55w halogen driving lights for headlights
I will be gearing this bike similar to my ESR for a gear ratio/motor max speed of 55mph. My ESR fully loaded weighs over 90Lbs w/o rider (due to SLA's) this bike should weigh 75ish maybe push 80. With Li-po's and the tandem motors it should be a good bit quicker than my ESR (WOOOOOOT!)