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  1. M

    Best Pedal Assist Setup

    Long time member here... I'm trying to re-solve my PAS options. What I'm looking for is the best peddle-assistance solution for a road bike. My goal has been to create a peddle-assist road bike using a Q100CST (cassette version) that would give me a boast while, at the same time, pedaling as I...
  2. M

    Hiding the controller and wires- suggestions needed!

    I'm building out a traditional steel road bike with a small rear hub motor (Q100CST) with a small sine wave controller and PAS only. I bought the mounting box for the controller and also a small Lunar battery (with seat bag) that will go under the rear seat. Mounting box is here...
  3. M

    Building up a 1984 Schwinn Super Sport - BMS Battery?

    This will be my fourth eBike build but I'm stretching a little on this one and I need the considered wisdom of the forum... Goal is a 15 - 18 mph city style bike using a 1984 Schwinn Super Sport as the donor bike. Acceleration and top end performance are not important- style and usability are...
  4. M

    Need help with Q100 install...

    I've built four bikes up from kits from EM3EV and GreenBikeKits. All have been assembled and worked without any problems. I'm not a complete novice but I'm stumped with my latest project. I added a Q100 bike kit to a women's (my wife's) Electra Townie this past weekend. This kit...
  5. M

    Minimum Voltage for EM3EV Battery?

    I've installed a MAC 10T, 6 FET Controller and 50v battery (50V 10.25Ah Samsung Pack - Cell Type: SDI-ICR18650-22P) from EM3EV on a Electra Townie. Really like the setup... I've installed a volt meter on the kit to monitor the battery's charge (trying not to discharge too much). Does anyone...
  6. M

    Any good solutions for integrating shifters and throttles?

    I'm converting an older mountain bike to a cruiser style build. I like clean builds but I struggle with using the existing (exceptionally ugly) half twist or thumb throttles with my bikes shifters and brakes. I'm open to any solution. And since this is a rebuild, I can choose any combo of...
  7. M

    Improving MXUS performance

    I have a MXUS geared small "stealthy" rear hub motor from amped bikes. It was my first kit, with a stock controller and a 36v battery bottle. It's been reliable albeit slow with weak torque. I'm considering putting on a 48v battery and upgrading the controller. Tested it with my 48v em3ev...
  8. M

    MAC Motor- 10T for torque or go for the 12T

    I am building out an Electra Townie Cruiser (26" wheels) as my summer project and want torque over speed. I'm looking at em3ev's 48v battery and either a 10T or 12T MAC. My current bike is an 8T MAC with a 48v frame battery. Top speed around 33mph but it is slow off the line. Sweet spot seems...
  9. M

    Installing a BMS for Lipo - How to?

    I'm creating a separate thread for this discussion. dnmun recently sent me a Bestekpower D122 12S BMS for my 12S 44v 5AH Lipo setup (two 6s Zippy batteries). It looks great- relatively small and will make my battery both safer and more convenient to use and charge. However, I'm looking for...
  10. M

    Lipo Double Harness for Charging and Power

    I'd like to be able to charge my HK Lipo batteries (12S - two 6S 5 AH batteries in series) without disconnecting them from the controller. My thought was to create a double wiring harness, with one set of connectors going to the controller in series. I'd split the harness and have another...
  11. M

    Help with Controller On/Off Switch Schematic

    I know the E-S forum's electrical engineering chops are pretty strong! Mine are not... I still struggle with soldering... :oops: http://www.adafruit.com/products/482#Technical_Details I bought this switch to use on my commuter bike (Q100 with CON62 controller). The controller on the bike...
  12. M

    iCharger howto? I need to charge 12S...

    I'm new to RC Lipo. I've read the Wiki (it's really informative) and am cautiously venturing into Lipo land. I have an iCharger 306B. I am (attempting) to charge two 6S 5 Ah Zippy Lipo batteries in series by using a wiring harness and a splitter for the balance leads. My charger keeps timing...
  13. M

    Pedelec Options for Q100

    I am trying to install a some type of pedelec sensor as part of my Q100 build. I ordered the kit from GreenBikeKit.com and included the pedelec sensor and control panel for the handlebar. The sensor is on a brass ring and includes a 5 pole magnet rotor. The sensor is pre-wired to the CON62...
  14. M

    Q100 Washer, Slotted Washer, Nut Order??

    I should know this but I don't. :shock: Installing a Cute Q100 on the front. I have a washer, a slotted washer (basically a washer with a bump) and the nut. I know where the nut goes... please no jokes! ;) It looks like the slotted washer goes on the outside of the fork and then the washer...
  15. M

    Can you drill holes in a steel bike frame?

    I have a steel framed cruiser and I would like to be able to run some of the cables through the frame. Most likely through the top tube. I think I would need 1/4 inch - 3/8 inch (6 - 9 mm) diameter holes near both ends. I would somehow paint/seal the exposed metal from the cut and use a...
  16. M

    Cute Q100 vs Bafang SWXK5- Anyone Happy?

    I am building a light speed, cruiser for short runs around home and to work. It will be powered by 5ah 48v lipo. I purchased both the Cute Q100 201 rpm and a 36V250W Bafang SWXK5. Both are front wheel mounts. Goals are: - assist up a few modest hills and speeds up 18 - 20 mph, with assist...
  17. M

    BMS for RC Lipo

    I'm looking for a BMS for two 6S Lipo batteries in series. Link would be really helpful. I saw a link recently (which now I can't find) but I when I looked, the part wasn't available retail. Any help appreciated. Note: Just edited my original post as I am putting the two packs in serial for 48v.
  18. M

    Do you cut your kit cables to fit?

    Looking for some general advice/best practices around kit installation... Is it best to just leave the cables as is and bundle them up when doing an install? Or should I consider cutting and trimming to fit the frame? With my first build, I bundled up all of the cables and hid them in a small...
  19. M

    Best Multimeter?

    What are the preferred multimeters those in the forum use? Just trying to fill out my arsenal...
  20. M

    Brooklyn Cruiser - Everyday Bike Stealth Build

    I've been riding what I have now come to think of as my heavy duty trekking bike for a little over a month and loving it. (Trek DS8.4 with disc brakes, Mac 8T, cell_man 48v triangle battery, CA v3- 60+ range and over 30 mph if I want it). Great fun and highly recommended. I have over 700+...
  21. M

    Q100 laced with 14G spokes?

    I've got a Q100 and want to lace it to the existing rim on my bike (keep a consistent look). The bike uses a 26" rim with Double Walled Alloy, 36H with CNC Machined Brake Surface and 14G Stainless steel spokes. (This is a quote from the manufacturer. Not certain what specific rim it is.) I've...
  22. M

    Charger failed... Need 48v Charger Recommendation..

    I have an LTX LT250-14M-3S charger from em3ev. I've dropped Paul a note but want to get a backup quickly (going on vacation next Wednesday and planned to take the bike). I would appreciate any recommendations for a backup charger... I have a cell_man 48v triangle battery pack. I've searched...
  23. M

    Pre-charge Circuit required for 36V battery?

    I have a MAC motor, 48V triangle pack battery and 9 fet 4110, 36-72V Infineon Controller from em3ev.com. Everything works great. I also have a 36V water bottle style battery (from Amped Bikes) that I'd like to use with the setup from time to time (much easier to take off the bike at work than...
  24. M

    Dropouts, Grin v4 Torque Arm doesn't fit

    My great thanks to all on this forum. I've been browsing (pouring over the details) for a couple of months and finally completed my first build. It is a Trek DS 8.4 with an aluminum frame. I built it out using a MAC motor and 48v frame battery from cell_man (em3ev.com) with cycle analyst v3...
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