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  1. J

    36V lights??? recommendation?

    Try doing a search for Cree LEDs. Something like this link in Australia: http://www.ledshoponline.com/high_power_mr16_led_10deg.htm If you are reasonably handy, there are several links on DIY lights that could be adapted to house this LED light. if you already have a dc to dc converter this...
  2. J

    cheap 24v 26amp ammeter needed

    Myzter, A current shunt is like a very low value resistor capable of carrying high current. You connect the current shunt in series with your motor. You then connect a voltmeter across the shunt. The voltmeter measures the voltage drop across the shunt's resistance. The resistance of the...
  3. J

    Cyclone motor / gearbox dismantling?

    Pete & Rick, thanks for the very helpful replies. I'll get a tube of Moly grease and attempt this on the weekend. I'll try to take some photos while I'm doing the overhaul. Do I need to remove the freewheel and adaptor to clean & regrease the gearbox? Pete - Good suggestion about replacing the...
  4. J

    Cyclone motor / gearbox dismantling?

    Fellow Spheroids, Has anyone here dismantled a Cyclone 360W motor / gearbox assembly? I have used a Cyclone 360W motor for about 2 1/2 years as a daily commuter. Over tha past few days, I have noticed the motor is getting a bit noisier. (I agree the Cyclone has always been noisy - someone on...
  5. J

    Even Newer 4 to 24-cell Battery Management System (BMS)

    wybornd - I share your pain.... Is anyone in Australia interested in piggybacking several orders together to save on shipping costs I guess if several sets of components were shipped together to say, Sydney, the cost of sending the different sets from Sydney to Melbourne or Brisbane by local...
  6. J

    Even Newer 4 to 24-cell Battery Management System (BMS)

    Hey Gary, please put me down for one board. I need 8 channels. I've got a 30V power supply all built and ready to drive this thing. :D Since you are not providing a kit of parts anymore, the BOM would be great so we can start sourcing parts. Thanks, JohnB
  7. J

    DiamondBack, Cyclone 650watts and Dewalt A123 packs

    Kin, I think the problem is that if the rear suspension pivot point is between the bottom bracket and wheel axle, as the suspension moves, the chain length effectively changes. This is usually taken up by the deraileur tension spring. This would be a major issue with the Cyclone. The guy...
  8. J

    Even Newer 4 to 24-cell Battery Management System (BMS)

    Gary & Richard, that's great news. Hope the testing goes well. I'm itching to get an 8-way board. JohnB
  9. J

    DiamondBack, Cyclone 650watts and Dewalt A123 packs

    Hi Kin, Re the Freewheel remover. Have a look at this link to the Cyclone Taiwan site. http://www.cyclone-tw.com/order.htm Just to the left of the Cycle Computer, there are a few tools, including the remover in the middle. It is a special tool needed to remove the freewheel bearing. Re...
  10. J

    DiamondBack, Cyclone 650watts and Dewalt A123 packs

    Kin, I based my e-bike on a Cyclone 360W motor and a full-suspension MTB from this site: http://www.learsport.com.au/view_product.php?product=BW3240V The BW3240 has the pivot point in front of the bottom bracket so the chain length does not change as the rear suspension compresses. I replaced...
  11. J

    The care and feeding of a123-based packs...

    Gary - Thanks for your reply. I've used my existing LiCo 2A charger and am monitoring the pack voltage manually (visually??) with a multimeter while charging. After two round trips, with charging at work and home, I am seeing almost identical voltages each time which is a relief. Straight off...
  12. J

    Even Newer 4 to 24-cell Battery Management System (BMS)

    Gary, Just a thought. If you are not looking to make a profit out of this (and if Fechter agrees as original designer) why don't you get together with Knuckles and see if his Chinese connection can produce these BMS boards for us E-bike enthusiasts. I'm sure Knuckles would be able to arrange...
  13. J

    The care and feeding of a123-based packs...

    dnmun - It was a pure fluke. I'd been having a browse of this forum and learnt a bit about all the work that the people here had been doing on De Walt cells. Then a chance meeting of a friend of a friend at a BBQ led to 5 warranty return packs landing in my lap. :D Of the 50 cells, I got 43...
  14. J

    The care and feeding of a123-based packs...

    Hi all, sorry for the long post, but I'm looking for some advice for a temporary charging solution for my pack while I wait for Gary to produce the next batch of kits of the new BMS. I have only recently got hold of some a123 cells and I don't want to kill any cells through mistreatment from...
  15. J

    Even Newer 4 to 24-cell Battery Management System (BMS)

    Hi Gary (or Fechter), is there any update on when new kits will be available for purchase at TP Products? Thanks, JohnB
  16. J

    What Battery Technology do you use

    I'm currently using a LiCo pack which is on it's last legs and can only deliver about 8A continuous. I'm building up an a123 pack now. I've got the batteries and the power supply. Still waiting to place an order for Gary & Fechter's new BMS. My prototype bike used SLA and I was realy glad to...
  17. J

    Even Newer 4 to 24-cell Battery Management System (BMS)

    While I'm waiting to order my BMS :roll: I'm pushing ahead with building my new battery box. Gary or Fechter - Would one of you be able to provide me with the dimensions of the BMS PCB please? I would also like the approx height with the connector and the low and high current resistors mounted...
  18. J

    Cheap testing of pack capacity?

    I was going to use the length of wire, but I bought a 6A-50A shunt from Jaycar (Australia) for AUD $9.95! You could try Radio Shack for one? These are a calibrated length of wire with connections to allow series connection with the load. You connect your voltmeter (usually set to 200mV range)...
  19. J

    Cheap testing of pack capacity?

    The two equations you need to know are: Volts = Amp x Resistance (V = I x R) and Power = Amps x Volts (P = IV) If you want to draw a reasonably heavy load (you mentioned 90A earlier), you need to get car headlight bulbs. I have used the H4 type which are available (in Australia & Europe) in...
  20. J

    Even Newer 4 to 24-cell Battery Management System (BMS)

    Gary - I would like to order one (1), 8-channel kit with 15 Ohm/2W shunts. Thanks, JohnB
  21. J

    Even Newer 4 to 24-cell Battery Management System (BMS)

    Great to see this is now available. Gary - Is it possible to buy the kit for a lesser number of series cells? I would like to buy the PCB and connector harness and enough parts for 9 cells (8 series pack, plus one spare set of components). I don't want to waste 7 sets of components. Thanks, JohnB
  22. J

    Even Newer 4 to 24-cell Battery Management System (BMS)

    Thanks for the explanation Richard. I figured as much. I know that the supplies can be tweaked a bit, but the cheaper "24V" supplies tend to run out of adjustment at around 28-29 volts and the less common 27V supplies that can be adjusted to 30V tend to be much more expensive. :( Also, many...
  23. J

    Even Newer 4 to 24-cell Battery Management System (BMS)

    Hi Richard, Can you please explain how the circuit would work if the power supply voltage was a little BELOW the required string voltage of ~ 3.7V x number of cells? Eg if an 8s pack needed slightly more than 29.6V from the supply but the supply could only output say 29V, would all cells...
  24. J

    Even Newer 4 to 24-cell Battery Management System (BMS)

    commanda, The specs quote a "Hiccup" overcurrent protection mode. How does this affect charging? I was also looking at this site for Meanwell supplies for my charger. I need 29.7 volts (8s5p) and was looking at the larger model (27VDC, 150W MPP238 - $65.94 +GST) as it could be adjusted up to...
  25. J

    Where can one get 'conformal coating'?

    In Australia, you can buy spray cans of this Conformal Coating in local hobby electronic stores. I don't know your US stores, but maybe try searching some of the electronics supply companies with on-line stores. (Maybe even Radio Shack?) I wouldn't use spray-on silicone personally. The real...
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