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  1. chas58

    Anyone use fairings? Why not...?

    A thread on efficiency got me thinking about fairings. I ran across this: "Numbers on the topic aren’t easy to find, but some that are regularly cited are extracted from David Gordon Wilson’s Bicycling Science. He states that a rider on a touring bike equipped with a partial fairing, and his or...
  2. chas58

    Indiegogo ebike for $159 (Friction drive)

    $159 (donor bike and shipping not included). I’ve always been intrigued by friction drives (thanks Kepler!), and this one looks pretty interesting. Light simple motor, and a small 6AH battery. This could be a simple light, stealthy (if not quiet) solution to give people a boost on their...
  3. chas58

    What do the 3 spd PAS settings on a controller actually do?

    What do the 3 speed PAS settings on a controller actually do? Basic controllers (i.e. KU65 from BMS battery) have a 3 speed switch for the PAS, that offers slow, medium, and high speed. How do they do this? Are they limiting the voltage to limit the speed? For instance, at 36 volts, do I...
  4. chas58

    This is too much fun. Light Q100 build #4 - full suspension

    Apparently I have to build a new e-bike every year, and its year #4. Time for a stealthy light weight full suspension bike... Found an old high end light aluminum full suspension Bianchi that a friend wasn't using any more. My dangerous thought is: That would be perfect for a hub motor...
  5. chas58

    I built a pair of electric bikes, and sold my car!

    I built a pair of electric bikes, and sold my car! I used to drive a convertible about 5000 miles each season. I used it mostly for shorter trips in the 10-15 mile range (one way). But since building some e-bikes, I hardly drove the car. I was having so much fun on the ebikes, it was getting...
  6. chas58

    Affordable E-Bikes Are The Next Big Tech Trend?

    Here is an interesting article prompted by the changes Storm is making in the e-bike industry (ok, its typical uninformed millennial hipster hype, but you get the idea): Affordable E-Bikes You Heard It Here First: Affordable E-Bikes Are The Next Big Tech Trend...
  7. chas58

    Another e-bike kick starter: Rubbee Electric Drive

    Ebike projects continue on kickstarter. This one looks kinda interesting, similar to the Kepler drive developed here: Rubbee Electric Drive For Bicycles Can Be Fitted In Seconds http://techflesh.com/rubbee-electric-drive-for-bicycles-can-be-fitted-in-seconds/
  8. chas58

    Lipo Starter Kit

    How is this for a shopping list for a Lipo Starter Kit: Shopping List: (2) Low voltage alarms: Hobbyking 2-8S Cell Checker with Low Voltage Alarm http://www.hobbyking.com/hobbyking/store/__18588__Hobbyking_2_8S_Cell_Checker_with_Low_Voltage_Alarm.html Or: Hobby King Battery Monitor...
  9. chas58

    Cute Q100 lightweight builds slow mtb, fast road

    I’m building two bikes. Power is 36V10Ah: 1) Mountain bike (slow speed) which I would like to top out with pedal assist at 20. Motor is slow wind (210) Q100. Goal: Motor optimized for 5-20mph. 2) Road bike (higher speed) which I would like to top out with pedal assist around 26. Wheel build is...
  10. chas58

    New Cute Q100 replacement? The Q140 CST

    Now that I have purchased my kit, I found that Cute now has a CST motor designed to be used with regular shimano cassettes. Oops, too late now for me. Now there is an option to the Bafang CST. Wonder if it is the same motor as in the Q100? Kinda looks like it. Is this a new motor, or am I...
  11. chas58

    Silly battery question:

    Would it be possible/practical to wire 3 of these in series to create a 36v 9ah (or 4 packs for 48v) small light short range battery pack for a small hub motor (Q100)? BMS battery seems to have something similar in a 36V9ah battery, but of course they charge about $80 in shipping on top of the...
  12. chas58

    motor for 120mm drop out hub drive?

    I have a single speed road bike which would be great for a hub motor. But, there is a catch: - it has a carbon front fork - It has a 120mm (horizontal) rear drop out. It would be perfect for me if I could put a small motor in the rear, but most rear motors are 135mm wide. Now the BMS web page...
  13. chas58

    Which Cute Q100 is right for me?

    Goal - the light weight and stealth look. Bike will be used for commuting, 10 miles one way, flat and fast. Me: Non electric I ride 20mph, can hold 25mph for an hour, and sprint around 30mph. I want some pedal assist when commuting (sometimes). Target speed 20-25mph with pedaling. I would...
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