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  1. Qwiksand

    VexPro Ball-shifted 2 speed, Left Side Drive Project

    I stumbled upon vex robotics website over the winter, probably following some rabbit hole that started somewhere here on the sphere- can't remember now. Anyway, check out the Vex Pro portion of their website: http://www.vexrobotics.com/vexpro/?ref=logo. They've got tons of cool goodies for us...
  2. Qwiksand

    Guys running printed pulleys- do your belts squeak?

    My belt is really squeaky and all the noise seams to come from the printed pulley/belt interface. I'm using a crappy Ametric HTD5, 15mm wide belt and I printed my pulley using eSun PETG. The PETG is holding up fine, though little rocks tend to stick into the grooves- becoming embedded in the...
  3. Qwiksand

    A thru-the-gears serial drive- KISS, COTS, No FW cranks!

    KISS- Keep it simple, stupid (though there are two more chains than a standard bike, the motor speed reduction/pedal speed multiplication mechanism is dead simple) COTS- Commercially-available, off the shelf parts (mostly :wink: ) No Free-wheeling cranks necessary- pedal input freewheeling...
  4. Qwiksand

    Aluminum extrusion subframe build- Prototyping Deck

    This will be my first e-skateboard build, so I wanted something modular and easily changeable as I'm sure I'll swap components and parts like on I do on my ebikes. I've been using v-slot and other hardware from http://openbuildspartstore.com/v-slot-linear-rail/ in a couple other projects I've...
  5. Qwiksand

    Source for 1.375 x 24tpi EXTERNALLY threaded tube/pipe?

    With my kona mid-drive, I'm in need of a 40-50mm long tube or pipe with standard 1.375 x 24tpi right hand threads on the outside- ideally it would have 26 or 30mm inside diameter so I can run standard sizes of sealed bearings as well, but this is less important as I can print bearing shims...
  6. Qwiksand

    The 'Hood Cruiser- 9c rear, 3d printed bits

    I'm having a go at sprucing up my beater neighborhood bike; making new mounts and what nots on the trusty 3d printer. This is the go to the store, carry the kid, bomb the neighborhood trails, do-it-all trusty mule in my garage. I have visions of making as many of the mounts, wire covers, etc out...
  7. Qwiksand

    Battery Backpack and Retracting Power Lead Project

    The goal of this project is to design/build an aesthetically pleasing, elegant solution to carry a pack of LiPo batteries on my back. I've been playing around with using PVC fence posts to hold lipo batteries for a little while (see the Kona build link in my signature) and have found this to be...
  8. Qwiksand

    Kona Stinky GM BLT-500 mid drive- frame mounted batteries

    The plan is to take a 2004 Kona Stinky (size large) frame, and use the smallest of the BLT series motors from Golden Motors, the BLT-500, to drive a free-wheeling crank set up. I'm using a freewheeling crank set-up from sickbikeparts.com and miscellaneous sprockets/parts from...
  9. Qwiksand

    Cute 128 BB drive on a Surly 1x1

    I bought a couple of the Cute 128 motors from BMSbattery last year with the intention of building a bottom bracket driven set-up (or two); a year later and I finally got a little time to start work on the project. This first build is a test sled of sorts, to work out the kinks and see what needs...
  10. Qwiksand

    BCD of sickbikeparts freewheel crank?

    Hi guys, I searched, but to no avail...Does anyone know the BCD (bolt center diameter) of the the sickbikeparts.com freewheel, heavy duty or standard- they look like the same BCD on their site...
  11. Qwiksand

    How to wire a push-button full throttle switch?

    Using a hall throttle, how would one go about wiring in a normally open, momentary pushbutton switch to engage full throttle? I have a variety of hand positions this would be useful in (out on the bar-ends, out on the TT bars, etc) when out cruising on long, lonely sections of trail. Any links...
  12. Qwiksand

    Fetish Obsession frame, 9c rear hub- "Project Lemonade"

    From the ashes of defeat... To salvage some of the time/work/materials put into this build http://endless-sphere.com/forums/viewtopic.php?f=6&t=14788, I'm modifying the triangle enclosure to fit my trusty old Fetish Obsession frame. This is the bike I've been riding for 1200+ electrified miles...
  13. Qwiksand

    Ibex Ignition, 9c rear, 6 pack Bosch- "Project Lemon"

    Major let down, 10 miles and cracked the frame. Brief History This is a 2 year old "all-mountain" Ibex Ignition Super frame that I put probably about 1000 miles on since purchase. I had some warranty work done on the rear swingarm (loose bushing pivots) about 6 months after I got it and I...
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