Recent content by tungsten2k

Those DC-DC converters usually get only about 60% of rating before turning into a hot mess, at least the several I tried that looked very similar which I use for converting my 14S bike pack down to 12V for running automotive accessories as well as charging my FPV drone setup with when out on a...

Anyone know a place to purchase the Hailong-1-II 13S/5P case in white ? (also called "Shark", "Dolphin" or "Case-08" (at BMSbattery). All I can find is black, but the picture on this page alludes that white might be out there somewhere :)...

Yes, it is 44T so what is on the site today appers accurate. -=dave

You're right, that's weird. I didn't ask special it; ordered right off the site. His site also shows it as $10 but I paid $8 so the site has def' been changed. Hrmm. I think I'm going to go count the teeth on mine :shock: -=dave

In case anyone is interested: EM3ev 14S 2A 58.8V fixed-voltage charger: 579g EM3ev 14S 5A 53.2V/57.4V/58.8V 3-voltage charger: 806g 46T BBS0x chain ring and guard: 400g 42T BBS0x chain ring and guard: 303g -=dave

Yeah, but I don't see how one could break the 5v+GND leads out of the brake cable and keep it weatherproof unless I slit the entire thing then heat shrink it back up around some hot-glue for sealing. Even then, it sounds like a potential problem when the water works its way into my blind splice...

Perfect ! I though they were just switches. Through crafting some longer Google queries at site:endless-sphere.com, I finally found the breakdown: http://endless-sphere.com/forums/viewtopic.php?f=28&t=50104&start=2700#p909779 I guess I can disconnect the rear brake and re-route it back into...

Does anyone know if there is a relatively easy way to pickup a trigger off the BBS02/750 without taking appart the motor/controller ? My goal is to electronically "turn on" a USB power port (and inverter) when the BBS02 is turned on using the standard soft switches on the C691 display. The...

Also highlighted is the rib that will likely need a bit shaved off (at an angle to match the clearance needed from the downtime. This is only because of using a bb wider than 68mm which causes the motor to not be centered on the BB per design. -=dave

I went through this too. 1) Then you probably didn't install the motor as tight as you could up against the downtube. The rubber pad on the BBS0x is supposed to butt tight up to it. If you cannot do this, because of the design of the frame, then you probably should build something to take up...

I used these and they worked: http://www.dx.com/p/male-female-bullet-insulated-connector-crimp-terminals-yellow-50-pairs-148501#.VICUj8mnBIl But then I ended up replacing the male (motor) side after shortening anyway. -=dave

I seriously don't get all the hoopla… as long as the welds for all the tubes headed into the BB remain intact, since the BBS0x doesn't require or use any threads from the BB, I would just grind that sucker down to 68mm and call it good. It would even give you the opportunity to manipulate where...

Wow, that'll be nuts. I'd probably consider using the cardboard tube separators or plastic grid holders to ensure a short doesn't occur. That's a lot of energy between your legs :-p I'd also be curious how well the controller holds up to the 14S pack voltage long-term. Teslanv has a 14S setup...

caveat: this is for 4.2V LiPo chemistry. I'm unsure of the LiFe voltages but I would imagine the same delta values would work, while the V(target) would just be lower. -=dave

The standard for MP-controlled LiPo hobby chargers is to: Perform test discharge of main pack at a fixed (calibrated) discharge; while doing so calculate individual equivalent Internal Resistance of each cell: R(int) = V(cell)/I(dischg) Use this R(int) for each cell to determine safe balance...