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  1. emaayan

    Frame failure investigation..

    so about a year ago, my custom steel frame broke around the chainstay over here this was a columbus steel frame with supported several mid-drives around 1500-2000 watts, it rode for 2 years around 10000 km while there might several reasons to this (one being there were times i didn't...
  2. emaayan

    any thoughts on this ritchey for mid-drive upgrade?

    https://ritcheylogic.com/p-29er-frame-black-yellow thinking about doing 1500w mid-drive on it... bikeradar review says the frame tends to flex on sharp turns https://www.bikeradar.com/mtb/gear/category/bikes/mountain-bikes/hardtail/product/ritchey-p-29er-review-51099/ one of the things i'm...
  3. emaayan

    micha did a strain test on GA celll

    an9-i23mGqc
  4. emaayan

    Paratrooper pro + BBSHD + emaayan's accident prone skills

    after a very long time , i'm gonna start a build thread in the hopes that this ones knock on steel, would fare better. some background, i've ordered the paratrooper pro because i wanted a full size folding bike that would stealthy as well train mountable, as luck would have it, just recently...
  5. emaayan

    My parametric cell holder for battery packs

    hi, i've designed this little thing, https://www.thingiverse.com/thing:2563222 based on 2 others parametric cell holders that were around, but didn't have everything i wanted. this one other then the regular number of rows and cols parameters , would also allow you to adjust: cell diameter...
  6. emaayan

    titanium frame for an ebike?

    this is 2nd frame i found which is also a 29er AND 68 mm bb shell, how ever it is titanium, and while i know carbon is bad, steel is best , not sure about ti, http://www.bikeman.com/CARV-TI99.html i recall i read ti flexes a and may fracture..
  7. emaayan

    thoughts on ritchey p29er for a mid-drive?

    https://ritcheylogic.com/p-29er-frame-black-yellow triple butted steel frame, (i like it becuase it has a 68 mm shell) mainly how robust it can. mid-drive can be up to 1500w (even though in reality it's probably 800-900w)
  8. emaayan

    fitting a 68mm thun torque sensor to pf/bb 30 system?

    one of things that always got in the way of selecting a frame was the bb shell of most frames is not 68 and not even threaded, while i still want to keep my 68mm bb thun torque sensor active, i was wondering if anyone tried it with adapters such as these...
  9. emaayan

    Getting un-even welds (weaker on the positive side)

    hi... i'm using the Arduino v2.2 spot welder, with 140ah battery (should be 1000amps) and 21 ms pulse time (2 pulses) trying to weld 0.2 nickel strips. the welding always strong on the negative side, but but very weak on the positive one, not only that, the positive probe sticks very well to...
  10. emaayan

    Index for None-rectangular cell layout

    hi.. i was wondering if there's any index (and if there isn't shouldn't this be one) for schemas for battery groups (mainly serial connections) in packs which are not rectangular? (mainly triangle, but anything goes)
  11. emaayan

    anyone here speak Chinese? :) trying to order something

    i think this site sells in-runner stators, but there doesn't seem to be any english version, i tried calling them, but on one who answered also spoke it . https://wuante.1688.com/
  12. emaayan

    good quality spot welding electrodes?

    hi.. unlike pure nickel strips where they keep telling you to get good quality ones, scratch and dip them in salt water, i didn't find any sources about welding electrodes, difference in quality, sources to get good quality ones, and how identify such quality (if there's a way that is) i'm...
  13. emaayan

    recommendation for a magnet maker?

    hi.. does anyone know of a magnet manufacturer that can create custom arc shaped magnets, but my the gazilions, but maybe a few 20? i'm trying to experiment with a 3d printer and reverse engineer the magnet i have (cause it was broken) the black part on the right is the plastic part i've...
  14. emaayan

    recommendation for hot glue/padding of cells?

    hi.. i was wondering if you found any particular hot glue which is more suitable then others to attaching cells the same goes for any padding material like foams to withstand heat. for example i was wondering if there is any "spary" i can use that would turn to foam and harden around the...
  15. emaayan

    Looking for a reliable 14S 40A bms

    hi.. i'm looking for a reliable (meaning folks who tried ,and had good experience with) 14S 40A bms, while i plan to run my battery at 30 continuous, i'd like to to use a bms which is rated slightly higher then that, just in case. the problem is that most of the 14S bms i saw (like the one...
  16. emaayan

    does anyone have the belt version of gng 2015?

    i'm interested in doing something similar for the chain version of my gng 2015, and there's very little room to place one, (i've converted it to 25H instead of T8F) so i'd like to see how the part looks like . on a similar note, are there any "brand" name of 25H chains which stronger then other...
  17. emaayan

    is there an article on how to take apart alfine 11 IGH?

    i mostly see stuff on nexus, but i wanna be sure to get it right, i think i found only one forum post and that's it but i need pictures as well.
  18. emaayan

    GNG started selling just their motors alone

    http://www.gngebike.com/belt-chain-motor
  19. emaayan

    how do i remove this freewheel?

    hi.. does anyone know how do i remove this freewheel? (for obvious reasons) i believe this is the freewheel in question http://www.ebay.com/itm/390920625401?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT yZ-RmB6e7AE
  20. emaayan

    Assistance required, you opinions needed!

    The editor of a motor vehicle in the leading Israeli news site(ynet) has given me the opportunity to write a pro-ebike column for a change. write now Israel is embracing ONLY the UK pedalec standard, and now plans to even legislate and require license and registration for that, something that...
  21. emaayan

    new cyclone 3000 w mid-drive kit?

    hi.. has anyone heard tried this kit before? http://cyclone-tw.com/order-3chain.htm i'm referring to the first kit xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx [moderator edit to insert video limk] https://www.youtube.com/watch?v=RFfw4aeajHk RFfw4aeajHk
  22. emaayan

    source for 80T+ 25# sprockets?

    hi.. i was wondering does anyone know about source for sprockets such as these http://www.electricscooterparts.com/SPR-2580.htm (other then electricscooterparts) currently i'm using cnc driven 85T driven sprockets, however these last about 6 weeks, so i was thinking either to have one created...
  23. emaayan

    A 25k$ military grade ebike??

    i guess this is what super heros will ride :P but kudos for making it fordable as well.. http://www.gizmag.com/military-spec-trefecta-e-bike/36586/
  24. emaayan

    Underage kids and ebikes....

    hi.. for a while now i've been wondering what it's like Europe and israel in regards to legality of ebikes and how much they are being enforced. here in israel, they just passed the European standard of 250w pedal assist up to 25 kph complete bikes. no kits (or mid-drives or others) are...
  25. emaayan

    does anyone know anything about this bmc controller?

    i just got it, and it's been running fine for a week or two, then it's just stops running the motor (it's still on) there's a LED light on it, which in normal situation, blinks constantly which means it's good, but then after some use, it goes constantly on, from what i understand it either...
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