February 5, 201412 yr Author Hello, Because I didn't spent time to properly equilibrate all my cells when I created my battery, I have 2 cells at 4.2V while other charge up to 4.06-4.10V. It's quite a high difference and I'd like to be able to discharge them manually I have jst-xh male plug coming out of my battery for easy checking. I just need another just-xh with a small resistor to discharge it. Problem is that I'm not home and I don't have any equipment with me.... Any idea how I can sort that out? Thanks
February 6, 201412 yr Author I think I found the solution: With U=RI, the cell voltage is about 4V and I need to discharge to about 15-20W or 5-6A. So 4V/6A = 0.66R So I need a 0.66ohm resistor: http://www.ebay.co.uk/itm/50W-Arcol-Aluminium-Clad-Wirewound-Resistor-0R68-0-68R-/300909840244?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item460f9fc774 And this jst-xh plug: http://www.ebay.co.uk/itm/Lipo-Balance-Extension-Charger-Cable-Lead-4s-JST-XH-220mm-/300698608879?pt=UK_ToysGames_RadioControlled_JN&hash=item460308a4ef I don't have a soldering machine, I'll just make some wires nodes. Is it all good?
February 6, 201412 yr Hi cwah, WARNING You will burn out the plug at 6A they are only rated 3A and the balance wires will get hot! http://www.jst-belgium.be/downloads/series/eXH_1.pdf Edited February 6, 201412 yr by shemozzle999
February 7, 201412 yr Hi cwah, WARNING You will burn out the plug at 6A they are only rated 3A and the balance wires will get hot! http://www.jst-belgium.be/downloads/series/eXH_1.pdf Good point. Well presented.
February 7, 201412 yr Author Yeah but it's for 3A constant. I'll only discharge for 30mn to 1 hour so it should be ok
February 9, 201412 yr Author The quick release alternative arrived: It does fit, but it's a bit too long for my bike. Probably need a bit of dremel on it
February 15, 201412 yr Author Steel cable tie from my torque arm has been teared in 2. Not enough to handle 2500W BPM. I need to get another one... maybe 2 other steel tie? Ideally I should bolt it but I don't have equipment with me (no drills or drill bits)
February 15, 201412 yr I suspect your dropout will be damaged with that much rotation, you need to remove the wheel and check it. You can by small U bolts that would be much stronger.
February 15, 201412 yr Hi cwah, I think you need to mount the first part of the plate set, i.e. the piece that fits over the axle in another position so that you can easily fit 2 Jubilee type clips. You don't need a drill, just couple of spanners and ones that fit properly, the axle nut is looking rather chewed. You also need a screwdriver.
February 15, 201412 yr I suspect your dropout will be damaged with that much rotation, you need to remove the wheel and check it. You can by small U bolts that would be much stronger. Good point Geebee, The dropout may well be damaged and that axle nut needs to be replaced, clearly the clip broke as it is the weakest part.
February 15, 201412 yr Author Sanity check.. Dropout looks ok, but the steel clip has been torn.. These are definitely not stainless steel clip
February 15, 201412 yr Sanity check.. Dropout looks ok, but the steel clip has been torn.. These are definitely not stainless steel clip Isn't that a crack, top right?
February 15, 201412 yr Fix it to the disc brake mount like this: http://i451.photobucket.com/albums/qq236/d8veh/Giant/torquearm-1_zps70cd2cd5.jpg
February 15, 201412 yr Just for safety's sake please check the area between the red lines, it may be a scratch but looks like a hairline crack. Don't want you injuring yourself
February 15, 201412 yr Author not the cleanest but I'm not home.. so no drill or drill bit. So just 2 jubilee clip. I'm also ordering a second torque arm from john for safety
February 15, 201412 yr Author oh I see. It's not a crack, it's just mark https://www.youtube.com/watch?v=81tqJQLauaA I have my motor rubbing against something, I initially thought it was the disc brake but it isn't... It's not really freewheeling... but I can't see against what it may be rubbing... any idea?
February 15, 201412 yr oh I see. It's not a crack, it's just mark https://www.youtube.com/watch?v=81tqJQLauaA I have my motor rubbing against something, I initially thought it was the disc brake but it isn't... It's not really freewheeling... but I can't see against what it may be rubbing... any idea? Was the spindle turning freely - you haven't tightened it too much before fitting the wheel? Are the jubilee clips clear of the wheel? Is the frame still true - it didn't twist when your torque clamp broke? BTW, wouldn't there be more room for the torque clamp on the opposite side of the axle, or does that foul the disc brake?
February 15, 201412 yr Author I hope the frame is still true... the motor is really tightened because there isn't much space to put it on. https://www.youtube.com/watch?v=81tqJQLauaA The noise does not come from wheel rubbing but from the motor... Maybe I tightened it too much
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