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  1. sigimem

    Zero battery pack in DIY motorcycle?

    While searching cells for my offroad project I found it difficult to get cells with a high power density W/kg and mid energy density that can still last more than 5oo cycles and are avialable for customers. Thats why I started this threat...
  2. sigimem

    2007 Yamaha YJ125 Vino conversion

    First great father and son project. I don't know the reglementations in canada so maybe it's not possible. It seems like there wil be a lot of weight in the back of your scooter directly attached to the frame maybe you should consider to reinforce the frame a bit. There might be twisting at...
  3. sigimem

    New 26Ah NMC Cell from a123

    in the pdf it says: Packaging is convenient in our existing module hardware and easily scalable for multiple applications. I guess thats a hint in this direction. Paul can you get your hands on these?
  4. sigimem

    New 26Ah NMC Cell from a123

    I found that it might be spot on for my battery pack: - I would need about 100V or slightly under 120V wenn HOC - around 2kwh+ - 250A continous - 400A pulse - 15kg max without the case - 1000 cycles or more - reasonable price I have a battery chart and so far this might be the only one that...
  5. sigimem

    New 26Ah NMC Cell from a123

    Have you seen this? Does anyone know more about it? seems interesting for a build where high current and good energy density is required
  6. sigimem

    Westart 20AH pouch cell

    On Facebook the guy stated 27 $ per Cell. He was asked for 100 Cells so maybe It´s more in smaller quantities. Thats the main argument for these cells I guess
  7. sigimem

    Westart 20AH pouch cell

    Hope you don't pick on me but some guy posted on facebook :roll: battery data and it looked very interesting. Is something like this available right now? Or are these just impressive numbers that are not real?
  8. sigimem

    velomobile suspension, advice needed. Build thread

    My go on a velomobile would be wide DH front hubs(20mm axle) a 1.4 inch wide 19" aluminium motorcycle rim and 24" Schwalbe Crazy Bob tyres but thats just my 0.02 EUR Your right you will see maybe your type of ridingdriving 8) fits this rim and tyre combo Maybe you can design the part that...
  9. sigimem

    velomobile suspension, advice needed. Build thread

    Hey agnuism great idea I really like the look of your CAD velomobile. I am stepping in a bit too late I know can't help it. My advice don´t use 28" wheels (with regular wide hubs) on a velomobile. Without the ability to lean the front wheels will have a very hard time. The driving will...
  10. sigimem

    500KG 4WD agricultural vehicle

    I thought about a vehicle maybe similiar to the specs you told. For moving small trailers installing a winch etc. I don't know your plan but I would go with big electric motors for every wheel mounted to che chassis not using them as hub motors but with reduction. Even if you use Hub motors like...
  11. sigimem

    Oil-cooled geared motor (German website)

    Might be the Zelena Vozilla Motor?
  12. sigimem

    Electricmoto blade build/upgrade

    a 19" motorcycle tyre should fit a 24" bike rim I use a Heidenau K46 tyre on my Hub motor Bike (19" rim) still kinda looks like a bycicle tyre but has more rubber...
  13. sigimem

    custom frame ideas

    Hey christerjung, any updates on this? I like the project and ideas...
  14. sigimem

    Motorbike Motor

    I asked enstroj which motor controller to use with their 207 motor. They highly recommend emsiso.com controller weighs about 1,5 kg and is not that expensive. It's called e drive 400. Nice project like to see it completed and in a frame. What will you use for a frame ?
  15. sigimem

    Electricmoto blade build/upgrade

    What is your top speed? How is the acceleration? really nice build you brother will like it I would guess,
  16. sigimem

    LMX P2 : Freeride trials motorcycle frame development

    +1 on the build thread 1. Question is it a revolt motor?
  17. sigimem

    irfb4110 controllers

    WTF 83% Efficiency? If thats true you would have 0,83*0,85= 0.705 70.5% system Efficiency assuming a 85% efficient motor. Would be bad
  18. sigimem

    What are the difference between front/rear m/c rims?

    Hard to tell depends on the hub(motor) you want to use. I would guess it´s better to use another rim.
  19. sigimem

    Infinion USB Programming Controller doesn´t work

    Asked Lyen but no response :(
  20. sigimem

    Sevcon Gen4 Size 6 teardown pics

    Well any more info about "My Controller" might be interesting.
  21. sigimem

    Tires

    Ok my fault. Anyway with this bike and the speeds your going at your fine with any decent bike tyre.
  22. sigimem

    Tires

    I liked the Schwalbe Crazy Bob tyres they are available in 20*1.85 and 20*2.1. Road legal for Mopeds in the EU (45 km/H) and Ebike 50 ready. If you want to go with the EBIKE READY 25 your still fine pics of bike and wheels would help
  23. sigimem

    build blog->fully aluminium trail/freeride BHT Frame

    Läuft bei dir was :D very cool that you designed and build a plama cutter. What is your goal in total weight of the new frame?
  24. sigimem

    Frame design program - carbon fibre

    There are two types of software: 1 .CAD programs made for modelling and drawing of parts. 2. Finite Element Method programs for calculating mechanical stress elongation and more. Also Solidworks has a FEM tool for it might be not the right choice for carbon fiber for example.So basicly most...
  25. sigimem

    Electricmoto blade build/upgrade

    Very nice build. Aluminium panels look good and wiring is very clean. what contactor did you use for the main power? The sprockets seem wrong to me they look like ones that were worn out :(
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