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  1. Andje

    QULBIX DIY Frame Q140MD

    Coming Soon....
  2. Andje

    QULBIX DIY Frame Q140MD

    You have beaten me to the punch. I got to the point of rolling chassis last year, and then summer got here and the family took priority. But I'm making progress now! I've been working for the last couple weeks. All the controls are mounted, I now have a J1772 port for charging, the battery is...
  3. Andje

    QULBIX DIY Frame Q140MD

    The outer diameter of the swingarm bearings is 1 3/8". The inner diameter varies depending on your motor axle width. I did get some with my frame, but I ended up ordering the ones below because I custom made my motor axle...
  4. Andje

    QULBIX DIY Frame Q140MD

    Depends on what you mean by depend. I mostly want it so that I can verify the cell voltage via bluetooth. I will trust it if it proves trustable. I'm not using it on lipo bricks.
  5. Andje

    QULBIX DIY Frame Q140MD

    I have a good battery spot welder, and .2mm nickel strip, and then I also have a bunch of 3.5 inch long 1/8 of an inch copper bar that I will solder to the nickel strip first, then spot weld the nickel to the cells. I ordered some copper/nickel solder paste, and I'm hoping to clean the strips...
  6. Andje

    QULBIX DIY Frame Q140MD

    Got a lot done over the last couple weeks. The bushings foe the rear wheel are made and installed, the read brake bracket is modified and mostly complete. Here is the bike in almost pedalable form.
  7. Andje

    QULBIX DIY Frame Q140MD

    Ok, after some thought, the plan is to take down both ends to the just under 16mm mm they need to be for the rear swingarm bearings, then use a er-32 collet and collet block to mount the axle directly in the milling attachment. That way I can ensure that the flats are parallel and centered by...
  8. Andje

    QULBIX DIY Frame Q140MD

    Had a go at one of the axles today. Lathe worked well, needed to do very shallow cuts on this 303 stainless, but we got there in the end. Basic dimensions and bearing races and knurling is done. I need to flatten the end to fit the dropout style brackets and add the channel for the wiring. Thay...
  9. Andje

    QULBIX DIY Frame Q140MD

    Indeed. Its working much better now. Got the new controller in today and i wasnt aware how much smaller it is. 200 peak 100 continuous vs 300 peak 150 continuous. The smaller it gets the better clearance i have for the front wheel when the shock compresses. This is an interesting development...
  10. Andje

    QULBIX DIY Frame Q140MD

    Received my new cross feed nut in the mail today, and it's the correct one and is tight on the screw. I need to get a new anchor screw to connect the two; the previous nut had been drilled and tapped for an m4 i think.
  11. Andje

    QULBIX DIY Frame Q140MD

    1.5mm glass fiber insulation board to make the interpack layers and isolate the bus bars that will conect the pacs.
  12. Andje

    Controller and volts

    Some controllers have a line in for a thermistor. This is a tiny resistor sized electrical component that changes resistance when it changes temperature. One would normally open the motor and glue it up under the windings to give a temp reading from the most crucial component. They certainly...
  13. Andje

    Controller and volts

    If you use 45 amps at 48 volts you are outputting 48*45=2160 Watts going through the phase wires to your motor. If you use 45 amps at 72 volts you are outputting 72*45= 3240 Watts. So yes, it will increase max RPM of the same hubmotor due to the increased voltage, as well as torque at all rpms...
  14. Andje

    QULBIX DIY Frame Q140MD

    Well thats a good question. As fast as possible. The 5304 went 135km/h on 36s as a hub motor in a 26 inch rim. I own both a 5403 and a 5404 from the group buy 10 years ago. With the option of changing the gearing now i have a lot more top speed options to play with. Currently i have a 19t and...
  15. Andje

    QULBIX DIY Frame Q140MD

    I think this is final battery configuration. Ill need to split the pack in the middle of the 4 stack to get it in and out, it just about fits in and out as one big peice but i think once it is welded and shrink wrapped and such it may not be able to make it. The bms fits easily in and out once...
  16. Andje

    QULBIX DIY Frame Q140MD

    In a dramatic effort of forsight, i bought the only other KHB controller availiable in the world off ebay this morning. Its a brand new in the box controller, the 200amp version of the controller i have, and comes with the j1 and j2 connectors and such. So if mine blows up i will be able to swap...
  17. Andje

    QULBIX DIY Frame Q140MD

    Ok, so this battery configuration looks pretty advantageous, it is loadable as one unit, the included charger and on/off key ports aren't blocked, and plenty of room for the connections and auxiliary stuff (Cycle analyst shunt, contactor and main fuse). Easy to find space for the 12v pack that...
  18. Andje

    QULBIX DIY Frame Q140MD

    Cells got in today. Ouch on the import duties... Im thinking about doing something like this configuration 40s5p. Bms mounts above pack to the top of the frame. Ths only issue is loading the pack into this spot, might require splitting it... ill have to tape some of these spacers up and try the...
  19. Andje

    QULBIX DIY Frame Q140MD

    Thanks! I like it too, so much room for activities inside. It was a good fit for someone like me with old powerful hubmotors that could be used for mid-drive. I'm hopeful this one repair to the Atlas will put me into good shape. The screw thread on the crosslide shaft looks pristine, and I bet...
  20. Andje

    QULBIX DIY Frame Q140MD

    Welp lathe project is slightly on hold while a new crossfeed nut makes its way to me from the states. At least I figured out where the chatter/inconsistency was coming from. It would maintain depth well as long as you were preloading it via the handwheel, as soon as there was room to move it...
  21. Andje

    QULBIX DIY Frame Q140MD

    They aren't rated 10c continuous, they are rated that up to 80 C. I agree this is marketing fudging the numbers slightly, but my BMS tops out at 200amps so 22.5 ah of these will be fine providing that almost continuous if I really wanted at least up to 80C pack temp. I don't know what kind of...
  22. Andje

    QULBIX DIY Frame Q140MD

    Thanks! I tidied up the workshop and got the lathe set up to turn the 303. Center drilled it and then took a couple light cuts to get the feel for the 303 on this Atlas lathe. Full speed with the tailstock properly locked with a center I was able to easily take off some material with my carbide...
  23. Andje

    QULBIX DIY Frame Q140MD

    Welp... Had to buy the cells that were in stock, so I now have 210 Molicel P45B 21700 4500mAh 45A Battery on the way from IMR Battery. I was going to go for their younger brother at almost 50% the cost, but c'est la vie. So hopefully I'll have 40s5p... 168 volt 22.5ah. I'm excited to use the...
  24. Andje

    QULBIX DIY Frame Q140MD

    Here is it mocked up with the correct shock size. Ill probably go coil in the long run but i had this on hand...
  25. Andje

    QULBIX DIY Frame Q140MD

    Chain line looks pretty good with current dimensions. Might not have to make as many changes as i thought to the new axles.
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