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  1. joe tomten

    New job with a Tough commute.

    Smart move on Jasons part. Over the years i've been mostly lurking here - no single person has more effectively comunicated the basic concepts of ebiking more consistantly, reliably and congenially than you have. YES. A well deserved opportunity.
  2. joe tomten

    My ebike frame cracked? Help!

    these Front V-Brake pivots fit the beast perfectly. http://www.identitibikes.com/products-details.php?id=FKITRBA i got mine here: http://www.universalcycles.com/shopping/product_details.php?id=52674
  3. joe tomten

    wallmart fatty

    Being that I cant afford a bafang bbs02 just now -- and having a couple of spare motors and controllers hanging about --- I'm gonna try to do a dual motor build on one of these. The hubs motors are both lowish power things. DD 2807 hub on the rear, and a geared hub on the front. 16s...
  4. joe tomten

    wallmart fatty

    does anyone know if the gng mid:-drive kit http://www.gngebike.com/450w-brushless-mud-guard is a direct fit for the walmart fatty? If so I will do one. *edit* what is the bottom bracket size of the mongoose beast.?
  5. joe tomten

    R.I.P. le Béte

    I'd try welding it back together with an oxy/acetylene torch and maybe steel plates sandwiching either side of the break. Lace up a new rear wheel and keep on going.
  6. joe tomten

    "Zephyr" - Finally, the "v4" Fechter/Goodrum/Hecker BMS...

    I have one of the V4. unopened board available if someone wants it.
  7. joe tomten

    My Eko Bike

    you are looking for charger that charges to 41 or 42 volts. These are Lithium ion batteries and 10s (in series) this guy would work. http://www.amazon.com/VeriBest-36V-2A-Smart-Charger/dp/B007NHWDC6/ref=sr_1_7?s=automotive&ie=UTF8&qid=1378238038&sr=1-7&keywords=veribest+charger just make...
  8. joe tomten

    lifepo4 cell group reverses voltage?

    thanks dogman, chagrined i am to be told "well known" when i was hoping "merely suspected" Time to reconfigure all my balance leads to some varient of Dr. BASS's db25 balance connector situation.
  9. joe tomten

    lifepo4 cell group reverses voltage?

    generic 26650's i got used a couple of years ago. been good in service. not high c cells. Yes, will have to cut in a new parallell group. I put this pack together from other funky packs - so this isn't new. Just a pain. i didn't leave the controller on. cell groups 2 . . 16 remained...
  10. joe tomten

    lifepo4 cell group reverses voltage?

    Just hauled out one of my bikes that has a 12s lifepo4 battery connected to a signal lab bms (red blinkey led type). The first cell group is MINUS 1.5v, and all the others around Positive 3.2 - 3.3 v. how can this happen?
  11. joe tomten

    grunting at start - lyen sensorless

    Well I can't discount the melted wire at the solder joint inside the motor possibility. But the reason I laced up this new motor (with bad halls) i had on hand was because I'd messed up wires at the axle just like you indicated. Xtracycle bag flopping over the unprotected wire at the axle. duh.
  12. joe tomten

    grunting at start - lyen sensorless

    I seriously checked each and every connnection. Funny thing is that if i baby the throttle on start up it runs almost normally. But I jam the throttle open like usual, and it gags. Especially with 2 kids on the back. It also gags when I change grade from flat - to up hill. I'm...
  13. joe tomten

    grunting at start - lyen sensorless

    I have a lyen 6 fet mini monster sensorless controller that I've been using for over a year . As of yesterday it has starting grunting and hammering the motor on start up, but once up to speed a bit - is still working fine. I've checked all the connections and they are good. Any ideas on...
  14. joe tomten

    Has anyone used front rack/boxes to balance battery w/ hub?

    BMX style handle bars work pretty well as a mounting structure for an ammo-box battery. I mount a piece of 1/2" plywood to the front of my handle bar w/ u-bolts and just use a small ratchet strap to hold it there, whether it's the ping 48v15ahr or some other rectangular object. takes a little...
  15. joe tomten

    Balancing Batteries - how to?

    "Charging cells with individual chargers":
  16. joe tomten

    xtracycle freeloader review, from an eBike perspective.

    I have an xtracycle attached to an electra townie that i use as my commuter/work vehicle. Works great. Carry 2 kids for 20 miles. Carry 150 lbs of feed. Carry any gear that i need to carry. Carry 2 pallets home if i want to. With the crank forward townie low COG format - the whole rig...
  17. joe tomten

    Lacing a HT into a 26" rim - flexed spokes - problem solved

    You might consider buying a round file whose diameter is a bit smaller than the spoke hole, then - while leaving the whole wheel strung together - remove spokes one by one and run that file for a few strokes through the nipplehole. You can sight a line down the direction of the spoke engagement...
  18. joe tomten

    400W for 12mph: Why is my bike so inefficient?

    & if nothing is getting hot, then power isn't being wasted and we are back to being suspicious about the Rshunt number programmed into the cycle analyst giving the overstated power usage value.
  19. joe tomten

    Preparing for long slow tour

    I made up a pair of xlr to anderson connectors that lets me convert the chargers xlr output to the anderson discharge plugs on the battery. That way i can use the charger in any location (and for different batteries i have hanging about). be sure to use your volt meter to check polarity...
  20. joe tomten

    Preparing for long slow tour

    You could just get a second charger for your ping and plug that in where the controller gets fed from. I often do this with both the signallab v1 and v2 types of bms's. Just don't walk away for too long - because the bms can't shut off that second charger. an hour of charging mid-day - say...
  21. joe tomten

    Cheap torque arm solution from Mcmaster

    "Made from black-oxide case-hardened steel, they offer mild rust resistance and have a minimum surface hardness of Rockwell C40" Seems like I could weld an arm onto it to resist twisting forces.
  22. joe tomten

    Signalab 12 cell BMS

    '' ' http://www.all-battery.com/protectivepcbsforlifepo4.aspx
  23. joe tomten

    48V 20AH battery for sale on ebay in USA any good?

    Their website has changed. http://www.goasisenergy.com/products-page/48v-lifepo4-battery-packs/
  24. joe tomten

    Papamotor

    Err, Exactly Which reputable vendors are selling a $500 kit that includes a 48v 15ahr lifepo4 ping battery (or equivalent)? i paid >$600 for my ping battery alone. A place that I can steer some one to for a kit that is $1,000 all in with a good plug and play lithium battery and good battery...
  25. joe tomten

    Do your circuit breakers ever trip from vibration?

    the ole' square-d QO series is supposedly dc rated and used in the solar industry for string combiners: 100amp & 10,000 amp interruptible. I keep thinking it would make a nice switch as well. $53 from home depot...
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