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  1. bowlofsalad

    Roof ventilation information

    Hello, Instead of writing out a novel on my journeys of do it yourself remodeling, I guess I'll just share a bit of information I've found highly useful concerning roof ventilation and related. I was completely unaware of (as are every local experienced roofer I've contacted) this information...
  2. bowlofsalad

    Round axle torque arm usage?

    Hello, I was looking over small geared hub motors like the SWXU and Q75 when I noticed they both have round axles. What would stop the axle from spinning in the dropouts? Perhaps some might argue that torque arms are unnecessary with low powered hub motors(sub 300w), any validity in this...
  3. bowlofsalad

    Sensorless, halls, encoders, motor efficiency?

    Hello, Has anyone made any measurements in motor efficiency differences comparing running a motor sensorless, using hall sensors, and using various encoders?
  4. bowlofsalad

    Does motor effeciency influence regenerative braking?

    Hello, Does a motor's efficiency curve influence the amount of energy a system can recapture in any circumstance? To illustrate my question a little better, if two motors were turning at whatever rpm and one was at 20% efficiency(in it's RPM efficiency curve) and another was at 40%...
  5. bowlofsalad

    Can you recommend a translation service?

    Hello, I'd enjoy hearing from those on this forum that have used a translation service or two and mention who they recommend. The service I am looking for doesn't involve voice communication. Thanks
  6. bowlofsalad

    Help needed looking for sealed cartridge bearings

    I am looking for cartridge bearing with contact seals that will do an adequate job of resisting rain and debris entry, as well as prevent low viscosity oil(no pressure behind the fluid) from getting escaping...
  7. bowlofsalad

    Seeking sinewave regenerative braking controller

    Hello, I've been reading oodles on this subject and I feel like most of the other puzzle pieces are in place. My plan is to lock the clutch on a Q100h and/or SWXH and use with regenerative braking. I couldn't care less about the clutch feature, personally. I haven't narrowed down the...
  8. bowlofsalad

    Shopping for small tire pumps, know of a good one?

    Edit: http://www.amazon.com/gp/product/B0065ZMWMI/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B0065ZMWMI&linkCode=as2&tag=xbnijgbr-20&linkId=AIVFAJPASE6KNWAC I've been carrying this on my bikes for a while, really nice, hasn't let me down at all. Sorry if this has been heavily...
  9. bowlofsalad

    Am I missing any other small geared hub motors?

    The hubs I am looking for have a hub flange diameter of 130mm or less, can have a brake disc mounted to it and are rear hubs (gearing can be mounted to them). Here is what I have found so far. Swxh Q100h I like options and this is a short list.
  10. bowlofsalad

    Calculating spoke length with staggered spoke rim holes?

    Hello, I am working on fully assembling (choosing all the individual components, and putting them together) a bicycle wheel (non-ebike, mostly for practice) for the first time. The measurements I am working with are as follows, effective rim diameter is 392mm (mutant elektra rim), inner hub...
  11. bowlofsalad

    What is acceptable spoke angle?

    Hello, http://www.ebikes.ca/tools/spoke-calc.html With the release of this excellent tool, I've been doing a lot of comparison on various hub diameters and the spoke angles they create with all the cross patterns. The general notion that I gather is that more crosses are better, I don't really...
  12. bowlofsalad

    Which geared hub to use for oil filled hub?

    Hello, I am thinking of oil cooling a geared hub. I love the idea of a geared hub based on it's weight and size. I hate the idea of a geared hub based on it's noise, and potential gear failure. So an oil filled (makes it less noisy, makes the motor run cooler which increases efficiency and...
  13. bowlofsalad

    Trying to choos a tire/rim, pros cons?

    Hello, See TL;DR if you aren't interested in reading lots. My plan has been to use the largest fattest slicks I could find with a slow winding hub, schwalbe big apple 622x60 for an ebike build. The reasoning that I have come to understand is that rolling resistance on larger tires is...
  14. bowlofsalad

    Seeking DD motor, wanting selection and opinion

    Hello, I have a 52v20ah battery, I am planning to drill holes and spray with boeshield t-9(or similar). I pedal plenty, I don't really want to go faster than 30mph, I have no mountains to climb and the hills aren't much in most of my rides and I am no hot rodder. On occasion, I may carry a...
  15. bowlofsalad

    Idea: Using/carving/making airless tire concept as tireliner

    Hello, I've been considering the idea of putting a old bicycle tire as a tire liner ('the system'). I have been pondering on the various options for tires as a tire liner, because surely there are tremendous amounts of variation in options and how they would effect your ride. Originally I was...
  16. bowlofsalad

    Seeking ultrasonic transducers for DIY ultrasonic cleaner

    Hello, I am sure others have used this idea before, maybe it is implemented in some commercial products I am unaware of. I am considering making a heated ultrasonic cleaner. I was doing some reading on the best ways to clean things, plenty say things like ultrasonic is like magic for cleaning...
  17. bowlofsalad

    Roads in South korean testing wireless charging for vehicles

    http://www.businessinsider.com/south-korean-roads-power-electric-cars-2013-8 "A city in South Korea just turned on its first network of roads that power electric vehicles as they drive. It sounds like science fiction, but it could be a look at the future of transportation. As ExtremeTech's...
  18. bowlofsalad

    How do you calculate MPGE?

    Hello, I have some guesses on calculating MPGE (mile per gallon of gasoline equivalent). According to various wikis, a gallon of gasoline might have 33.4 kwh (kilowatt-hours) or 33400 watt hours (lower end of figures I've found) of energy in it. That is a wild amount of energy, can you...
  19. bowlofsalad

    Seeking spoke washers for 14ga spokes through 13ga hole

    Hello, I've read several times that an ideal spoke to go with for spokes on an ebike hub is 14/15ga butted. What I am working on is 14ga straight spokes, but the holes on the hubs are for 13 ga, the heads sit deep in the holes. Is this an issue or do I need to buy washers? If washers are...
  20. bowlofsalad

    Axiom Journey 2429 bicycle rack

    Hello, I purchased an axiom journey 2429 (I paid a bit over $45 with shipping) a while back with the intent of placing my first ever ebike battery (48v20ah) and various other riding essentials on it. The total weight of what I placed on the rack was likely around 30lbs, probably a little less...
  21. bowlofsalad

    Any options for higher spoke count?

    Hello, I've been reading some on spokes, it occurred to me that perhaps a higher spoke count would alleviate most broken spokes with exception to something like a stick getting into the rim. I imagine using very elastic, something like 15ga butted spokes on a 72 spoke rim would create a very...
  22. bowlofsalad

    Seeking fat (2" minimum) 27-29 inch tire options

    Hello, It sounds like 700c and 28" tires are interchangeable on the same rim. I might guess this isn't true for 29" tires. Right now what looks best is a big apple 28x2.35. I will be using these tires primarily on the road until there is any hint of ice, then it's likely onto studded tires...
  23. bowlofsalad

    Printing Batteries - SILAR

    UZM3aHANScc Summary: A man describes and demonstrates a technique for making a type of battery and speaks about starting a kickstarter for something relating to the battery and fully creating a way to print a battery onto paper.
  24. bowlofsalad

    Negative effects of welding with ebike parts on the frame?

    Hello, Having the battery removed and turned off, can anyone imagine or know of any negative effect of MIG or flux core welding to ebike components? I imagine plenty of cars electronics aren't removed when their bodies are welded upon, or maybe there is a special procedure for welding upon a...
  25. bowlofsalad

    Teslas unvieling of 95 second battery swap system

    http://www.engadget.com/2013/06/21/tesla-motors-battery-swaps-faster-than-gas/
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