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  1. [Team1] Gabriel

    The "egg-laying wool milk pig": PSU+charger+BMS+ESC device?

    You got me. Didn't think about this issue. :mrgreen: Thats not so a bad idea, we thought about that too. But we only considered upgrading the battery Pack if one ride, for example of a commuter, would take more than 10-20km (6-12miles). But a fully integrated system (PSU+charger+BMS, even if...
  2. [Team1] Gabriel

    The "egg-laying wool milk pig": PSU+charger+BMS+ESC device?

    THAT... I realized too, just after posting this thread :lol: But anyway, what if we change our opinion and decide to design the whole drive+batt in one piece? (That is still not so clear! Maybe we switch to an all-in-one detachable design after all) Then a device like this would be nice...
  3. [Team1] Gabriel

    The "egg-laying wool milk pig": PSU+charger+BMS+ESC device?

    Like some of you guys know already, we are a group of students who want (as an economical+engineering project which might be put into reality later) to compile and construct a small, lightweight and easy-to-use drive system. Because of that ist should be attractive to people who hesitated or...
  4. [Team1] Gabriel

    Student project: bike drive [Team1]

    We have also decided different tasks for everybody untill next week: 2 people make marketing, law, cost accounting... 1 battery technology 1 motors (myshelf) 1 construction schemes, drafts 1 sensors and power output adjusting Then next week we will collect, compare and fuse what everybody...
  5. [Team1] Gabriel

    Student project: bike drive [Team1]

    So guys, today we held our meeting, discussing the advantages and disadvantages of the most ideas and we came to a conclusion. We decided to design a mix between go-ped and Kepler's drive...
  6. [Team1] Gabriel

    Amberwolf's other "Bottom Bracket"-type Drivetrain Idea

    I wouldn't say that, your post was a very constructive comment. Your answer was logic, you revealed (the not so obvious) weaknesses of the idea, explained their consequences and also made a suggestion which took the good features of both ideas into one reasonable sounding solution. There are...
  7. [Team1] Gabriel

    Student project: bike drive [Team1]

    Just to sum it up: Here all "just-bolt-on" kits I've collected so far. (1) a drive similar to Kepler's (2) something similar, just attached to the seat stay (3) something smaller, like Hidden Power Something like go-ped (I know, the lever ratio and the resulting force is too much, but this...
  8. [Team1] Gabriel

    Student project: bike drive [Team1]

    Nice one, jag! That idea is not bad after all! But we don't have to build it; and we are not going to build it. (Don't know how many times more I have to say this :lol: ) - but I will build it later (as a private person) - I will begin shortly after the completion of this theoretical project.
  9. [Team1] Gabriel

    Amberwolf's other "Bottom Bracket"-type Drivetrain Idea

    Wow, another new idea of a variation! And also sounds very reasonable - at least for me. Never thought that there were so many possibilities. @bandaro: Sorry, I cant comment to the viability of your idea, because I have no experience whatsoever yet... I just wanted to say: Isn't it great how...
  10. [Team1] Gabriel

    Student project: bike drive [Team1]

    Oh... thanks for the info you two. @amberwolf Wow, yes, that looks more like it :D
  11. [Team1] Gabriel

    Student project: bike drive [Team1]

    @bandaro: you didn't read my text properly, I said the grey parts (including the battery, motor and conroller) wouldn't move (spin) with the wheel. lol, that looks a little bit like "Tim Taylor"-style ^_^ @miles: Yeah, quite similar: the M.I.T as executing institution, the same idea behind...
  12. [Team1] Gabriel

    Student project: bike drive [Team1]

    Here is one possible way like I ment it: the grey parts are fixed on a plate (I didn't drew the plate, you have to imagine it is there; and all parts are glued onto it or something like that) ant the plate is fixed with the shaft. the red parts can spin.
  13. [Team1] Gabriel

    Amberwolf's other "Bottom Bracket"-type Drivetrain Idea

    Ah, now i just saw that jdcburg was faster with the posting :P But I didn't understand all of his words so I'm not sure if my draft hits exactly his explaination... maybe I have to re-read it a few times, that helps in most cases ;-) EDIT: Nah, still don't get what he means with that...
  14. [Team1] Gabriel

    Amberwolf's other "Bottom Bracket"-type Drivetrain Idea

    Would be somebody like me ^_^ Your idea has this advantage at least over a normal BB-drive. To my suggestion for the "active+geared derailleur": It was just a fast draft - I drew the drive sprocket too far to the right side of the sheet and too high, I think it is possible to lengthen the...
  15. [Team1] Gabriel

    Amberwolf's other "Bottom Bracket"-type Drivetrain Idea

    Hi amberwolf. Thanks for your friendly input the other day. Hopefully I can return the favour: I didn't understand everything you guys spoke of (my technical bicycle vocabulary needs a bit of a polish), but I think I came up with an idea which can save you all the trouble of a lateral-movment...
  16. [Team1] Gabriel

    Student project: bike drive [Team1]

    Hi Thanks for your reply! I believe you just quickly scanned over the text and looked mainly at the pictures, so maybe you misunderstood the drawings slightly, but I could be wrong: For the gears in the box I planned tooth belt driven ones, so that you have less wear; and primary it reduces...
  17. [Team1] Gabriel

    Student project: bike drive [Team1]

    Now I suddenly realized one huge disadvantage of the coppenhagen wheel: what if you forgot/lost your smartphone? :mrgreen:
  18. [Team1] Gabriel

    Student project: bike drive [Team1]

    Hmm, at first glance the concepts look a lot alike. But when you take a closer look you see that this is just a style-product. Not soo expensive for such a kind of product indeed (600$), but i'm not so sure about the usability of the batteries - and all the rest. Somehow this wheel insn't very...
  19. [Team1] Gabriel

    Student project: bike drive [Team1]

    Hey, if we would design that concept in a certain way: plates instead of spokes, with different size holes punched into... and painted yellow... ...it coincidentally would also fit the name I initially came up with: Cheasy - (cheap and easy) :lol:
  20. [Team1] Gabriel

    Student project: bike drive [Team1]

    Thanks for the explaination... many names for just one drive, easy for a beginner to onfuse something. :mrgreen: Yeah! That's the spirit! If all people had that altruistic attitude, the world would be a much better place 8) Nice, it seems that at least here are a bit more of this kind...
  21. [Team1] Gabriel

    Student project: bike drive [Team1]

    Yeah! Also a good idea. And this Goped...that looks really easy to use and install - I hope we can come up with a similar good idea! I see now... it wasnt a mistake to go to this forum ;-) So here my originally idea, which I wanted to build before I knew about the project. I didn't find...
  22. [Team1] Gabriel

    Student project: bike drive [Team1]

    Nice! Thanks Adrian. Man, the "hidden power" looks awesome! So small!
  23. [Team1] Gabriel

    Student project: bike drive [Team1]

    Wow, that looks really like something! here for example: http://endless-sphere.com/forums/viewtopic.php?f=31&t=20491&p=298028&hilit=kepler#p298028 Ivan, I think you were the one who had the idea in our meeting to use a friction drive... I think you don't need to post a draft or anything any...
  24. [Team1] Gabriel

    Student project: bike drive [Team1]

    Thanks for the hint! Yeah, I hope we can avoid that and find a solution which is a little more sophisticated/enterprising than that. ^^ I asked my colleagues to think about a concept and to post their ideas/sketches here bevore tomorrow (hope the do so, lol). I will post my concept ideas...
  25. [Team1] Gabriel

    Student project: bike drive [Team1]

    In the first meeting we were not sure about what the drive should be used for, what the main direction should be we want to develop the drive into. For fun-driving? Tours? "Easy and quicker to work"-driving...? So I thought long about why I even wanted to build an eBike in the first place, and...
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