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  1. rkosiorek

    Testing Magnets - DIY Gauss Meter

    I don't do spring cleanups. instead i do pre-hibernation cleanups. this year i looked around my storage area and i found i have way too many dead and fried motors hanging around. time test whether some of these are just junk or if they can be rescued. Specifically i need to figure out which of...
  2. rkosiorek

    Ebikes on the TV News

    spotted this little blurb on yahoo's e-motor-assist forum. http://www.wset.com/story/18312428/electric-bikes-being-tested-in-danville sort of interesting a local college is doing a project studying the practicality of ebikes. rick
  3. rkosiorek

    DIY Single Cell LiFePO4 Charger

    Single Cell LiFePO4 charger by rick_kosiorek, on Flickr I have a few large LiFePO4 packs that have been stored for a few years without being charged. some cells are 3.3V and over. these are likely good. some cells have leaked and are obviously bad. Others read near 0V and likely cannot be...
  4. rkosiorek

    Welding Advice Needed

    I'm coming back after a long absence. diabetic complications and infection issues. several good things happened last Friday. 1. I got out of the hospital after 6 weeks with my right leg still attached. 2. I got my income tax refund. and 3. The local police were holding their yearly auction...
  5. rkosiorek

    CNN News is looking for Customized E-Bikes

    CNN is looking for some seriously blinged, chopped, hacked and hot-rodded E-Bikes. so far only Justin of ebikes.ca has made a submission. i figure this is the forum with some of the most radical stuff. so Doctor, Recumpence and Jester should at least get some major recognition from these...
  6. rkosiorek

    CNN News is looking for Customized E-Bikes

    CNN is looking for some seriously blinged, chopped, hacked and hot-rodded E-Bikes. so far only Justin of ebikes.ca has made a submission. i figure this is the forum with some of the most radical stuff. so Doctor, Recumpence and Jester should at least get some major recognition from these...
  7. rkosiorek

    CNN News is looking for Customized E-Bikes

    CNN is looking for some seriously blinged, chopped, hacked and hot-rodded E-Bikes. so far only Justin of ebikes.ca has made a submission. i figure this is the forum with some of the most radical stuff. so Doctor, Recumpence and Jester should at least get some major recognition from these...
  8. rkosiorek

    CNN News is looking for Customized E-Bikes

    CNN is looking for some seriously blinged, chopped, hacked and hot-rodded E-Bikes. so far only Justin of ebikes.ca has made a submission. i figure this is the forum with some of the most radical stuff. so Doctor, Recumpence and Jester should at least get some major recognition from these...
  9. rkosiorek

    CNN News is looking for Customized E-Bikes

    CNN is looking for some seriously blinged, chopped, hacked and hot-rodded E-Bikes. so far only Justin of ebikes.ca has made a submission. i figure this is the forum with some of the most radical stuff. so Doctor, Recumpence and Jester should at least get some major recognition from these...
  10. rkosiorek

    Using the Meanwell S-240-48 as charger

    I am trying to convert a Meanwell S-240-48 power supply into a CC/CV charger. It is very much differeent than the S-350 series chargers that have been discussed in other threads. first of - the input section uses a STR83145 voltage sensor to automatically select the input volyage range between...
  11. rkosiorek

    Testing Mosfets using a DMM

    the only way to confirm that a MOSFET is blown it to test it out of circuit. unfortunatetly being in circuit influences the readings very much. the tests are very simple. and can be performed with any meter that has a "diode" test setting. the "diode" setting injects of voltage of between 2.5...
  12. rkosiorek

    Adding CA Connector Infineon 18 FET Controller

  13. rkosiorek

    NOT-YOUR- GRANNY Trike build.

    after a short hiatus i'm going to build another bike. this time it will be a big delta trike. i will start by using a KHS Manhattan frame. mine has seen a couple of mods already. but so far they are failed experiments. here is how she looks at the moment. Front hub motors on a trike like...
  14. rkosiorek

    help with Wheel Dynamometer

    i was looking at a full box of 1/4-20 Allen head cap screws and some aluminun angle/channel material i had lying around and decided i just had to do something with it. add a pair of EV-Warrior brushed motors used as generators and i ended up with a Dynamometer. now i can measure the wheel RPM...
  15. rkosiorek

    rear axle with motor sprocket on ebay.

    i spotted this on ebay this morning. Item #290341659202 under $40 delivered. i don't think it includes the freewheel. but it may be what some are looking for for a chain drive. rick
  16. rkosiorek

    new HEADWAY 38120 cells spotted on ebay.

    guy in toronto has 20 pieces. check out auction #330358952402. rick
  17. rkosiorek

    high turn count 9C motor.

    searching throught he threads i found some mention that the regular 9Continents comes in basically 2 flavors. a motor with 6 turns for the 20" wheels and a model with 7 turns for 26" wheels. there was also some suggestion that at one time or another 8, 9 and 10 turn versions were also made. i'm...
  18. rkosiorek

    Using Reed Switches For E-Brakes

    this article gives an example of how to use a Reed Switch and a magnet mounted to the Brake lever to activate the E-Brake function of almost any controller. in my case i used the connectors for the Crystalyte controller. exactly the same connector is used on the Cyclone and Wilderness energy...
  19. rkosiorek

    Enginneering Challenge

    I am trying to debug a couple of Soneil SLA Chargers that i have. most of the circuit is pretty straight forward. i'm just not sure i understand this one section. what is this part meant for? it is stand alone. is this for Short Circuit protection? reverse polarity? surely not for current...
  20. rkosiorek

    Cyclone Motors Exposed! Totally Naked Pictures

    First off, I did not take these pictures. these were taken by Bill Bushnell of his Cyclone motors. he has a bunch of them. He also published them on the net on his own website: http://bushnell.homeip.net/~bill/bike/pictures/cyclone_motor/pages/page_1.html I just reproduced them here with his...
  21. rkosiorek

    100WV 50A max 500W Active Load

    I was looking for a load to connect my Battery packs to for testing. I was thinking of using some big power resistors but the price for those was prohibitive. Next I though of some heating elements made from resistance wire. Same problem. Next I thought of a big bank of 100W bulbs. Not bad but I...
  22. rkosiorek

    How to measure Milli-Ohms

    lately i am finding it more necessary to measure milliOhm values to check motor windings and controller shunt resistors. so i have decided to build an adapter to allow me to use my regular Multimeter to measure and resolve 0.001 ohm. the oldest form of ohmmeter would put a known Current through...
  23. rkosiorek

    Crystalyte Website is down?

    i have been trying to get the Crystalyte factory website all day (http://www.crystalyte.com) and it keeps comming back with "Server Not Found" or other such errors. i hope that it is just something like Kenny forgot to pay his light bill and not something more serious anyone have any more...
  24. rkosiorek

    Business Name

    After a recent injury, hospital, rehab and other stuff i am unable to return to my former job as i am now considered to be handicapped. The old job just involved too much travel. the job did give me a varied background in machining, electronics, computers etc. sort of became good at many things...
  25. rkosiorek

    Chassis dyno

    i am looking for some ideas for a dynomometer that can be used to check hub motors once they are mounted in a rim. i am thinking of an open class electrathon vehicle and i would like to be able to test motor and controller combinations. i have tried google and other search engines but the...
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