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  1. lostrack

    What's my bike worth

    I'm considering selling/splitting my eBike -what do you reckon it's worth? Giant DH Comp, Fox 40s, Astro 3220 with Matt's DaVinci drive, HV160, Cycle Analyst, .75KWH barely used Turnigy Lipo - are the basics. I probably spent over £4K on parts, experiments, and the lot, but I know it's not...
  2. lostrack

    2nd Lipo fail - help me buy (not build) a better pack?

    Hi all, I have a 12S3P Turnigy LiPo setup. After leaving it for a month, both times I've come back and 3 cells (in 3 separate packs) have been pulled down to zero. That's £300 of batteries that are now dead. This is having left them completely unplugged, the only thing connecting them is a...
  3. lostrack

    Less building, more riding

    Hi, Got a bit fed up with how much obsessing over little details I've been sucked into, so have withdrawn a bit from the forum to just get out and ride, you know... Thought anyone with similar ailments may like to post videos of just having fun on these eBikes we've created. Summer's just...
  4. lostrack

    wiring RC - Cycle Analyst [ :) fixed]

    Hi, I can't seem to get this right on my first try - can anyone shed any light onto why this is not working? Esesntially I have doubled the reds and blacks to the same bits on the board, and just changed the throttle cable to PWM. When I pull the throttle, I get a nice display-dimming effect...
  5. lostrack

    Racing starts

    Anyone good at 'em?
  6. lostrack

    Design Aeusthetics - eCar/eBike sound

    I was on a team that pitched to design the sound for a popular electric car. We were going to involve one of the top, most iconic sound designers in the world - but the manufacturer couldn't afford us. During this period, and years before, I did alot of work on sound design analysis of electric...
  7. lostrack

    NORCO recall frames

    Might be of urgent interest to certain members http://www.norco.com/pub/ftr/Norco-%20frame%20Point%20of%20purchase%20poster%20-EN.pdf
  8. lostrack

    Temp sensor on Astro 3220?

    Hi all, I'm having a bit of trouble getting the can of the motor off. Any tips? Where would one put one's temperature sensor to accurately read temps? Windings OK? What is a safe temp in 'C for Astros? thanks for reading Tom
  9. lostrack

    Battery headache

    Hi everyone, Some wierd shit is going on with my packs. I have plugged each pack individually into the balancer just to check why I was getting inaccurate cell counts 2 of the 5s packs are showing 4 cells only The 6s pack is showing no cells - even though we soldered the black balance lead on...
  10. lostrack

    Battery wire length - OK to run different lengths?

    Hi all, I need to extend some battery cables. Not by much, and I have caps in-line. Can you confirm if it's OK to run these at different lengths (positive longer than negative) and (1 battery positive longer than the other positive, wired in serial?) Cheers in advance
  11. lostrack

    Want a quiet ride? Acoustic noise in motors:cause & solutio.

    http://ieeexplore.ieee.org/Xplore/login.jsp?url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel5%2F7090%2F19100%2F00882782.pdf%3Farnumber%3D882782&authDecision=-203 ABSTRACT This paper deals with the causes of acoustic noise in induction motors and presents methods to reduce the noise before and after...
  12. lostrack

    How does this make you feel?

    pUVEH7AoEnw
  13. lostrack

    New 95C packs

    http://www.jespares.com/electric-models?page=shop.product_details&category_id=1168&flypage=flypage.tpl&product_id=12867 That's alot of power...
  14. lostrack

    Very cool - carbon vs Alu destruction testing video

    In the Santa cruz lab... If you're not yet on pinkbike I highly recommend it http://m.pinkbike.com/news/santa-cruz-bicycles-test-lab.html
  15. lostrack

    So : who's tempted to build Luke's Goldenmotor mach 1 bike?

    Come on...chime in...who else has got the need for speed! Luke - please post some more specs/photos/videos to feed the EV lust :)
  16. lostrack

    Ebike in the snow....so much fun!

    Here's what I did today. There's a combination of Matt's slipper clutch, no tread on the tyre and an unprecedented 8" of snow overnight in the UK! woohoo BbRV_1kf2j0
  17. lostrack

    Who successully runs ~10kw through a derailleur?

    ...In need of replies, or some help on the search function! After an age typing "3220 derailleur", "3220 shimano" etc. etc. I haven't found much on this. Any clues?? Reason : I took the beast (3220 direct drive) out for a first spin, max speed 30mph(ish) realised on a (comically big) 80T...
  18. lostrack

    Need help - wiring order

    Hi there - I'm about to put a few new things in-line for the first time. What order should the following go in, (after the battery pack and before the controller) - Shunt - Fuse - Switch - Precharge mini switch & inline resistor (should this be parallel to main switch?) It's a 50.4V RC...
  19. lostrack

    Cheap source for 80T chainrings

    I've been searching for weeks for a cheaper alternative than greenspeed chainrings, at $250, they're not cheap. I've also followed the CNC route, which is cheap if you know the right people, but 'front door' prices are around £250-350. The actual material cost is around £10. Cheapest I found...
  20. lostrack

    Adding caps to Castle Creations ESCs

    Hello EV gurus! So - I've seen more than a few builds adding more capacitors to Castle Creations controllers. *edit* I have done some research and and copying/pasting what I found here. Hope it will be helpful. http://www.rcgroups.com/forums/showthread.php?t=952523 Problem Conclusion from...
  21. lostrack

    Pimp your ride : cool looking rev counter

    Hi all, This sort of thing could look really fun on ebikes. They are built for 12v application so would plug straight into a DC-DC converter. Can any petrol heads spare £0.02 for opinions on the wiring? On an RC setup the scale is spot on, too...
  22. lostrack

    CAD/DXF Chainring file

    Hi all, I've been reading this fantastic resource for a few months now and have developed what could be described as an obsession for eBikes... Oh dear! Am trying to do something constructive with it - so have posted my first build today -...
  23. lostrack

    Tom's BEAST

    Yo! First build. Am trying to build something really fun to ride... After deciding non hub is for me (weight distribution, smaller controller, lower (safer) voltage & I actually like the sound they make) I got in touch with Matt Shumaker and ordered some kit. Spec: Giant DH Comp with Fox...
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