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  1. Beagle123

    Motor Over Heating Problems

    You can buy brushed controllers here: tncscooters.com
  2. Beagle123

    Motor Over Heating Problems

    WIth brushed motors, if you switch the leads, the motor will run in reverse. Is it possible that the wires were switched so the motors were running against each other? (Longshot guess.) If you run two controllers, you will need to use smaller controllers or it will make the problem worse...
  3. Beagle123

    Motor Over Heating Problems

    When your controller says 900w, that is the rating for continuous use. Usually a controller can output maybe double the power of its rating. The best way to understand what your controller's maximum output is to look at its maximum amps. It should say on the controller the maximum amps. For...
  4. Beagle123

    Throttle %

    Hi: I think the best way to do it is simply putting a resistor from the positive leg of the throttle to the signal leg of the throttle. You could then put a push-button on the handlebars to make the connection happen. Push-button...
  5. Beagle123

    52t sprocket hitting my frame

    Hi Team: I think I found the solution: http://www.chainreactioncycles.com/Models.aspx?ModelID=36416 I measured the diameter of the bottom bracket, and its about 1 3/8 inches (35mm). This spacer is made by a company called "Hope." I guess they have that name because you have to hope this...
  6. Beagle123

    52t sprocket hitting my frame

    Thanks for the input, you guys. My major challenge is finding a design that I can build quickly and cheaply to sell to others. I can buy these sprockets for $22.00 at a distributor. Doing things like buying a new bottom bracket will add more cost that I will have to pass on to the buyer...
  7. Beagle123

    52t sprocket hitting my frame

    Hi: I'm trying to install a 52t sprocket on my bike, but the teeth of the sprocket are rubbing against the frame. In this picture, you can see that if I tighten the retaining bolt, the teeth of the sprocket will contact the white bar on the frame. Is there some kind of spacer I can use? I'm...
  8. Beagle123

    Help Me install BPM axle

    Thanks chvidgov.bc.ca: I'm learning to trust the labels on these controllers. I agree this is a problem. I've since switched to a 17.5 amp controller: http://www.elifebike.com/peng/iview.asp?KeyID=dtpic-2012-7Q-P96D.9KNYX Do you think 17.5 amps is too much for a typical lifepo4 10ah...
  9. Beagle123

    Help Me install BPM axle

    Hi dev: As usual, you're right again. It wasn't the battery. I hooked-up a watt meter, and tested two different batteries: Battery1: 15s 10ah lifepo4 @ 49v Battery2: 16s 10ah lifep04 @52v I tried giving it a light load by slowly accelerating up a 4% hill: According to the watt meter here...
  10. Beagle123

    Help Me install BPM axle

    Hi Dev8: As usual, you're exactly right. I was thinking about bending the plate to eliminate the rattle, but I didn't know if it would work. I may just try denting the edges to make it tight. Its nice to know that I'm not just wrecking my new battery. I checked the white speed-control wires...
  11. Beagle123

    Help Me install BPM axle

    Hi Y'all: Here's what's happening. I mounted the battery, and took it for a test ride. It is very slow. On flat ground, I get exactly 16 mph. The good news is that I get 15mph up a 4% hill, This is a BPM Code 14 motor. Shouldn't it be faster? I'm using a battery that was sold to me as...
  12. Beagle123

    Pick a bike with BIG FLAT REAR DROPOUTS

    Good advise! Where did you guys get those nice looking "old-school" torque arms? I like the ones in the pictures--digman's and neptronix. Please let me know where to find them. Eric
  13. Beagle123

    This deserve some laugh !!

    AC is better for men, DC is better for women. Everyone knows that.
  14. Beagle123

    Help Me install BPM axle

    Hi dev: Thanks for the help: I was under the impression that it could handle 17 amps at 48v. Now I'm leaning towards the same setup with the BPM. how does that sound? That's exactly what I want. My gut feeling is telling me that taking a slow wind geared motor and running it at 48v with...
  15. Beagle123

    Help Me install BPM axle

    That's exactly right. I can't believe you knew that! :) Those torque arms look excellent. The setup you have looks very good, but I might separate the two pieces, and only use the part that goes over the axle. I'd use the hole in it to bolt directly to the frame. On my bike I have a nice...
  16. Beagle123

    Help Me install BPM axle

    Hi dg: I'll show you how I did it, and you can let me know if I can improve it. First, I found a torque washer form an old bike. It is on the left side with the half nut: So on that side it has a torque washer and the steel frame. On the other side, the derailer has a black "C" shaped...
  17. Beagle123

    Help Me install BPM axle

    Thanks lbz5mc12. I see what you're saying. I'll try that. The fit was very tight, I need to really push on it to get the extra few mm of separation. Thanks doc. So you guys are real doctors. Very impressive. I thought you were just using the names i.e. Doctor-is-in-the-house...
  18. Beagle123

    Massive shock and sparks

    Could you please supply us with pictures of the charger and the name of the company you purchased from? We need clues of what to buy and avoid. Thanks, Eric
  19. Beagle123

    Article on battery fire in Germany (with video)

    Cool!!! I like fires!
  20. Beagle123

    Help Me install BPM axle

    Hi: Thanks for your help. I've solved the problems: I found these nuts at a fastener super-store called "King Bolt." The nut on the left is perfect for maximum friction against the frame. The one on the right is narrower so I used it as the spacer to separate the frame from the freewheel...
  21. Beagle123

    Help Me install BPM axle

    Hey. Thanks. Now I see it in the diagram. The threads are 12mmX1.25. Thanks dg. I wrote to BMS Battery, and they aren't responding to my emails. I've heard from others here that BMSBattery will no longer respond to email after they ship the product. I didn't get the bags of parts you...
  22. Beagle123

    Help Me install BPM axle

    Hi chisixer6: Thanks for the help. So the spacer that you talked about is just a 12mm inside diameter tube right? Does that normally come with the motor? What is the standard set-up you get when you buy from a normal vendor? (not a scumbag like BMSBattery) I've already gone to two hardware...
  23. Beagle123

    Help Me install BPM axle

    Hi: I recently purchased a Bafang 48v 500w 201rpm (Code 14) motor from BMSBattery.com. They didn't include any nuts or torque washers with the motor. It Just had a bare axle. I would like to learn the proper way to install these hubs. The problem that I'm having is that there's no bolt to...
  24. Beagle123

    Cute Q100 lightweight builds slow mtb, fast road

    Great report chas. I'm really getting a good understanding of what these motors can do now. I think you found an excellent way to use the 328 RMP cute motor, but it seems to me that most users would do best with the slower RPM version. For me, I learned that I can't rely on it as a solo...
  25. Beagle123

    Bafang Bpm, how many RPM?

    Also, now I've discovered that there are no bolts or washers included in my kit. When I received the wheel, the axles had nothing on them. No bolts, washers, or torque washers. I've screwed on a 7 speed freewheel, but now I've discovered another problem. The freewheel protrudes so that if I...
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