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  1. P

    High tire pressure or low pressure?

    But they do affect comfort! Quite a bit, in my experience. The rougher the road surface, the more tire pressure matters, in my experience. Go as low as you can without getting pinch flats when you go over your largest common obstacle, in my case some potholes and railroad tracks.
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    High tire pressure or low pressure?

    If you're interested in this, I suggest reading bicycle quarterly's research on this. You have to buy some of their back issues, but it's pretty interesting. They've done a bunch of tests with careful controls and published the data. Basically they suggest a wide tire with lower pressure but...
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    Bypass-Type BMS?

    Sure, you don't HAVE to have a BMS on board. Most (all?) RC airplanes work this way and most RC guys don't even balance every charge. Some do, some balance every few charges, some don't balance ever (these are generally the people who have battery fires). However, if you have don't have a BMS...
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    13s4p "shark" battery -> where to buy case only?

    Try this: Down tube side release electric bike battery case and bicycle storgae box with USB output for 36V or 24V bike battery http://www.aliexpress.com/item/32726318633/32726318633.html The 36 or 24v is only in reference to the "charge indicator" which is just a volt meter. If you want to use...
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    My kick scooter project

    Regarding the lipo batteries you just bought... I assume you know that turnigy is the hobby king house brand. Usually the best price is direct from their site and shipping isn't too bad either, if you buy a decent amount of stuff. Check out the shipping tables ... Kind of confusing sometimes...
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    Potting Batteries, Thoughts and Experiments

    As cells continue to improve, you'll go over 100 Wh with a 10s pack pretty soon. I'd be interested in 7s1p or 2s4p packs. Those could be easily assembled into 14s packs, but are still under 100 Wh, even with the next generation of cells. 2s packs would be the most flexible in terms of voltage...
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    Potting Batteries, Thoughts and Experiments

    Yes, according to FAA rules there is no limit as long as each pack is <100Wh. They do have to be in your carry on luggage, not allowed in checked luggage at all. The most I've personally carried was 15x RC airplane batteries, 60 Wh each (3s lipo, 5600 mAh). TSA asked why, but no further...
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    13s4p "shark" battery -> where to buy case only?

    This appears to be the side dismount case: http://www.aliexpress.com/store/product/Down-tube-electric-bicycle-battery-case-and-lithium-ion-storage-box-and-container-for-36V-muntain/1816683_32656122431.html The drawing in the description indicates this model (2016) is 34mm longer and 12mm...
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    Sondors Controller Help

    Does anyone know what electrical components are in the plug on a sondors controller (circled in the picture)? Pins shorted together? A resistor? It is removed to plug in a display. And/or does anyone know what the manufacturer and model number are? Ideally, have a manual for it, but I can...
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    Half-upright/half-recumbent electric cargo tandem

    I'm thinking of doing a very similar thing with a half-upright/half-recumbent tandem that can carry two people or a bunch of cargo. How did the telescoping boom with generator work on the front? Did you have any issues setting up the controller? What would you do differently if you were to...
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