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  1. dontsendbubbamail

    Bubba's Viewpoint

    I like upright bikes and my wife likes recumbents. Bought the Viewpoint to make us both happy. It has independent pedaling and gearing so it also solves the problem of me spinning the cranks too fast for the wife to keep up. The design is rack style motor mounting, left hand freewheel to...
  2. dontsendbubbamail

    Bubba's Build 6

    Did you miss me? It has been a while. Life has gotten in the way of my biking. I use to ride with the racer boys, but this year I only got in 50 miles total. Hopefully next year that will change. Usually I procrastinate, but this year I am trying to get ready for next spring. My wife...
  3. dontsendbubbamail

    32V Fuse / 48V System Real or Wishful Protection?

    Do I have real over current protection, protection that might work, or just wishful protection? I have been using fuses that I can get from the auto store on my 12S 48V battery packs. These fuses are rated at 32V max. I believe that this rating is based on arc suppression. My thinking is...
  4. dontsendbubbamail

    Bubba's Build 5

    Now it is time to do a build with some gears. The gears are for me and not the motor. My single speed ebike works great, but I miss having gears that allow me to match cadence to speed. My other builds used wood as all or part of the structure but not this time. Everything is going to be...
  5. dontsendbubbamail

    What is Bubba doing?

    When complete it will help me create ebikes. What is it? AJ should know. Bubba
  6. dontsendbubbamail

    Bubba's Build 4

    It's a start. The body of the motor and the shaft are roughly an inch longer then the old style motor. Bubba
  7. dontsendbubbamail

    Board Beefers

    So now I am beefing up my 18 fet controller board traces and realize that two of the fets on the A and B phases have the negative buss trace on the top side of the board. I do not see a elegant way of beefing up these traces. Using jumper wires on the bottom of the board digs into the limited...
  8. dontsendbubbamail

    Bubba's Board Beefing / Repair

    In the picture, you can see where I burned apart the ground trace and vaporized part of the C phase trace on my 12 fet controller. I had some 3/4" L copper water tubing, so I split a section, hammered it flat, and cut new traces on the CNC machine. This should repair and beef up the traces...
  9. dontsendbubbamail

    Bubba needs a modded Infineon controller

    Who has a new model, programmable, 48V, 50 or 60 amp continuous, modded controller for sale and ready to ship? PM me the price if you prefer. I am giving up on modding controllers myself and am in the market a 6 fet or preferable a 12 fet controller that has been modded to handle 50 or 60...
  10. dontsendbubbamail

    Infineon Programming Help

    Need some help on what to try next. I have tried both versions of Parameter Designer with the same results. As seen in the first picture of the older program, I get the message of "Transmit Started", but get no activity on the progress bar. Does this mean the software is working? My...
  11. dontsendbubbamail

    New Style HXT / TURNIGY Exposed

    The front bearings are shielded. Rear outer bearing is sealed while the inner one is shielded. Magnets are glued in with lots of glue. Windings are tight. My impression is that that the quality has improved some. The front screws, sides side screws, and rear screws were loose. Every...
  12. dontsendbubbamail

    Eagle Tree / Cycle Assist Amp Readings

    I have an Eagle Tree with a remote display and a Cycle Assist on my bike. 1. The Eagle Tree amp readings are about 0.4 amps higher then the Cycle Assist. When I get time I will do a calibration and find out which is correct. When I am stopped the Cycle Assist is showing 0.0 amps while the...
  13. dontsendbubbamail

    Infineon 6 Fet

    Does U2 need a jumper between pin 2 & 3? This is counting left to right. I got a Infineon 6 Fet from Methods. Everything has been installed, but it doesn't work. The 5 volt regulator (L7805) doesn't seem to be getting power from VCC-L. If I follow the traces from VCC-L, through the 330 ohm...
  14. dontsendbubbamail

    Wye did I do it?

    Jermey Harris made me do it. :wink: I decided to try a wye configuration on my 3KW motor so that the KV would be about the same as my 6Kw motor. This allows me to use just one jack shaft and to be able to switch motors without changing the gears. Will this cause me a problem? As you can...
  15. dontsendbubbamail

    Bubba’s Build 2 Morphing to Build 3

    It is time to be a little safer. I added a 100A fuses to each of my 12S Lipo packs (two 6S zippy packs). The fuses are only rated for 32 volts, so I am pushing them at 48 volts. My thinking is any fuse is better then nothing. When I get the new motor mount constructed, I will be rewiring...
  16. dontsendbubbamail

    Grocery Getter Frame

    I have always like the idea of the Xtracycle, but thought the design ate up room that could be use for batteries and motors. Here is a design that looks like it frees up more space in the rear triangle. http://www.worldbike.org/node/13/plans-and-parts Bubba
  17. dontsendbubbamail

    Bubba's 2nd Bike Build

    It is never too early to start thinking about the next bike. Maybe waterproofing the motor and gears is not important. Blow the motor out with an air gun and a few squirts of WD40 and it will be good to go. Just don't get WD40 on the belt. A poor mans design more like Matt's may be the...
  18. dontsendbubbamail

    Circuit Breaker

    Has anyone tried using a circuit breaker like this? http://www.affordable-solar.com/apollo.90.amp.circuit.breaker.htm I know that it might blow the my CC 85 esc if it trips, but I think it would be useful for two reasons. Would 90 amps be right or 100 be better? 1. It would keep the bike...
  19. dontsendbubbamail

    Power & Reliability Hall Effect vs Fets

    We have two threads that seem to have the similar goals of increasing power and reliability from the controller aspect. There is the "mounting hall sensors to R/C brushless motors" thread that is adding Hall Efects to an RC motor and using standard controllers. The other thread is "HV110...
  20. dontsendbubbamail

    How To Calculate Torque for a Clutch??

    Is this the correct way to determine the clutch rating? Shaft Speed1352 RPM Power Input 4000 watts = 4000/746 = 5.36 HP HP = Torque * RPM / 5252 Torque = 5.36 / 1352 * 5252 = 20.82 ft-lb 20.82 ft-lb = 249.87 in-lb So this clutch should be close enough to work?
  21. dontsendbubbamail

    Bubba's 1st Bike Build

    I have gone as fast as I want to go with a trailer pushing me, so it is time to build a bike. The bike, being a full suspension , needs a custom rack which I am fabing out of 1/2 inch tubing. It will be using left side drive. The hub, left hand freewheel and 56 tooth sprocket are for an ICE...
  22. dontsendbubbamail

    RC ESC Current Limit

    I think that I need a current limiting circuit to protect my battery. My RC controller can handle 80 amps, but my battery has a 40A peak and a BMS cutoff of 65A. I have seen the the circuit uses an op amp and moves the throttle toward zero when an over current occurs (I think). It may be the...
  23. dontsendbubbamail

    Bubba's Experiment

    I have wanted to do an electric bike for a while, but with the daughter in college, I don’t have much spare money. To keep from having to modify my bike, I went with a pusher design by using a trailer. Bought some inexpensive parts from TNC Scooters and started construction. Just to...
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