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  1. S

    AWD fatbike (first build, first draft..)

    Nice build...but i have concerns about ur front fork setup...unless u have a good dental plan....if not no less than a cromoly fork, bmx ones are sturdy and cheap....carbon blings but also breaks..just google images carbon fiber failure...
  2. S

    Resistor network on my controllers 5v PSU gets VERY HOT

    My umble advice is if the controler works fine and only problem is resistors to hot, keep the same values in resistance but double the power rating of them and as previously sugested leave a gap betwen the pcb and resistors so they dont warm up the rest of the components specialy the caps...
  3. S

    Disc brake caliper options, for 160mm rotors.

    if u think bb7 are the sweet spot ur wrong cause uve never used decent hidraulics. had bb7 on my bike and upgraded to shimano slx brakes with ashima rotors, didnt crash my budget and the feeling and braking power are amazing. other downside of the rim brakes mentioned earlyer are if u crash...
  4. S

    9C serious mods & weight reductions.

    nice work on the hubsetup! u wont regret extra cash spent on the rim, spokes and craftsmanship. a busted spoke can have unpredictable damage to rider and bike. my father in the 70's repaired hundreds of ac motors used mainly in water pumping in harsh enviroments like deep water holes. they...
  5. S

    Any Chromoly frames with a low seat-tube height?

    why not a spring seat like a good quality brooks instead the thudbuster? timeless and reliable for a lifetime. very interested in ur project. godspeed....
  6. S

    Mystery Electric Bicycle / Moped / Scooter

    around here in europe there is a boom on this scooped models. a friend of mine comutes on one like the pic. he is tall 1'95 meters and heavy 90 kg and he is very happy with it. been womdering if for.the price of 700 euros plus a battery and controller update would be better than a bicycle plus...
  7. S

    USB Charging Port

    what u need is a boost dc converter. Google Mintyboost or MAX756 dc converter, very well documented . I builted one to charge my phone with a 1v solar panel while listening music and radio on the beach. 5 v output only by the way, but for voltages other ic's are available and the principle of...
  8. S

    Best dual-purpose mtb/street tire???

    Hutchinson Piranha - light with the lowest rolling resistance, excelent in tarmac, dry gravel but stay out of the mud, wet gravel.
  9. S

    Who's Crazy enough to get an Optibike?

    just try to bild a ebike and get trough a CE standart certification. That cost as to reflect on the final product also.
  10. S

    Front Coroplast Cargo Fairing Build (New Pix 12/17)

    WTF??
  11. S

    Is electric traction control available on modern controllers

    yea but will do if u make a emergency braking with front and rear brakes at full power
  12. S

    Is electric traction control available on modern controllers

    i would love a mtb front disk brake ABS system instead. Surely hould save a big dentist bill ... lol
  13. S

    Fan cooling controller

    Why not squirrel cage pc fan's (used in blade pc servers and oem pc in the pci slot to cool cases)???
  14. S

    Simple ebike 'fuel gauge'

    hi there. nice post jeremy, fuel gauge is a cool ebike gadget. Those picaxe's can be a powerfull cheap tool if used right. I recomend interested people to check maxim-ic power management products - they have fuel gauges (some with coloumb counters), battery monitors and protectors IC's. Just...
  15. S

    My solar bike

    build a cheap bank of low esr lead-acid batts, wire it to arduino adc inputs and datalogg stuff, control charge and discharge etc.. ur mind is the limit.. optimal eficiency with a solar tracked pv array, (only one rotary axel design? cheaper to build) Several posts on web how to compare two...
  16. S

    My solar bike

    i think ur doing this the wrong way. Just my humble (newbie with still no ebike) opinion. imagine it heavy, with big air displacement and dangerous aerodynamics, and ineficient with actual setup. U have to change something or else i think u will get hurt and or with a waste of money. Maybe uf...
  17. S

    Doc EXTREME 36 FETS controller

    Doc, great respect for ur builds and achivements. Y not just drop the capacitors donw to the pcb and throw it in a regular smaller aluminium extruded case filled with mineral oil?? Like powergrid transformers or modded pc's? The goal the less oil the less weight but surly hould conduct heat...
  18. S

    Surly Pugsley: E-bike possible? Or just crazy?

    it would be awesome maybe a puma hub motor and lipo rc packs hould be fun, i dont know, u r at ur risk. Check that its a big rear tire and the rim profile is assimetric to allow chain clearance. Ceck for "surly endomorf tire" and "large marge rim" on google,etc check other fat tires bikes
  19. S

    Interest in a "Power Board" devkit for homebuilt controller?

    i am wondering for a while in the idea of 8 - bit MCU like Atmega 368 (arduino open source platform) and design a sensored controller in a Arduino shield. The shield hould be suitable for other platforms like ur Microchip MCU or whatever other developers are confortable. Just have to pack the...
  20. S

    Interest in a "Power Board" devkit for homebuilt controller?

    Rhitee05 when i read the post title i imagined the e-bike valhalla - custom controller - how? - Open-source hardware + custom adapted to ur specs open-source software -Imagine timming, power,thermal management, u name it. allowme some brainstorm webclipping im gathering about some time...
  21. S

    Una de tantas

    Im not an expert, hell i dont have a e-bike yet, but i'm always concerned about structural integrity from suspension fork/frontHub combos. i imaginate it like as hypothetical 3 kg structural mix of aluminum/steel parts (controls + headset + fork ). They will support the acceleration and...
  22. S

    My Hybrid E-bike project

    very nice build, keep posting.
  23. S

    electrifying a cannondale bad boy 700

    hacked ur design in my bike, i like it ---- a lot.
  24. S

    electrifying a cannondale bad boy 700

    hi e-canon, i got inspired by ur work on the badboy, its awesome. Can u post some pictures / specs of ur rear mech/freewheel combo? Im having some doubts about compatibility with tread-on freewheel chainrings and the slx (shimano megatrain) rear mech of my bike. ur input hould help me...
  25. S

    Horses of Iron

    if u liked the nirve photoshop ive made check this one froma electra amsterdam balon 8 before: After. I would feel very honored if someone got inspired with this photoshops
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