Search results

Date Relevance Most replies

  1. I

    House Burned down from RC LiPo Fire

    Hi, I just had a lipo fire too, I thought I'd post somewhere here to share. Or actually it was more of a lot of smoke and a lot of heat but it's definitely hot enough to burn up and cause a fire under the right conditions. I was charging a Zippy 3S 5AH lipo pack, the charger was set at 3.3A. It...
  2. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    I finally tried the 80A controller but, disappointingly, it didn't work. I tested each hall sensor using a voltmeter and all three are good. The voltage reading changed from 0-5V when I turned the motor by hand. I tried all 36 phase and hall wire combinations but none of the combinations...
  3. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    I just wanted to share a quick update just in case anyone else stumbles into this thread. I now have an 11T and a 13T sprocket with an 8mm bore. I plan to try them out this weekend and see if they'll work with the 20A controller. I was also able to get an 80A brushless controller but I still...
  4. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    Thanks for the tips about buying the sprockets with the smaller bores and about using the drill press! I'm new to this so this is really helpful.
  5. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    Thanks for the link, those sprockets are way cheaper! I don't have access to a lathe but I was able to buy a drill press on craigslist for some change. I'm guessing that could work if I can center the sprocket being drilled and keep it in place. I only need 8mm, so 5/16 bore should work. At this...
  6. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    Thanks for the feedback on gearing! I don't mind the top speed you pointed out if only the motor can get there under the current setup, but I agree that looks too tall. Based on your recommendation, I'm looking into an 11T and a 13T currently from...
  7. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    @gwhy!, I checked out the links you posted and watched the videos too. Very cool and inspiring. Great job on all the gearing and the very polished custom work too. I'm curious about the controllers, you mentioned they are just 6 and 12 fet controllers but you get 80A or something out of them...
  8. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    Thanks for sharing! Based on your numbers, I think my halls are properly setup testing with no load. It's good to know you were also able to make the SK3s work. Do you have a build thread or website I can check out to learn a thing or two? What kind of controller or ESC are you using? And what...
  9. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    Thanks for the tip... I'm sure the controller's far from ideal, I was trying to build this thing up on a tight budget and I already had the controllers on hand. I figured starting with a low amp controller wouldn't be that bad so I wouldn't burn my motor right away if the current was low enough...
  10. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    OK, tested the halls with the voltmeter and they are still alive. Tested the different hall combinations, found the best one. Motor still works despite overheating earlier today. Motor spins fast when there is no load. But it's pretty slow to accelerate, overheats after a short distance, and...
  11. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    I tried using 72V but forgot that the Turnigy watt meter is only good up to 60V... I burned it unfortunately. I've searched here on fixes and saw that Amberwolf was able to do it, but it doesn't seem to be an easy fix. Connecting the hall and phase wires, I realize the color coding don't match...
  12. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    Updates from this afternoon: I replaced the busted hall sensor and everything seemed in order with the voltmeter test. So I put everything back together. Without using the spreadsheet for the 36 permutations, I was able to find a wiring combination that worked by just switching the phase...
  13. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    Lunchbreak update: I tested the halls using a voltmeter, with the black lead connected to ground, and the red connected to one hall signal wire at a time. At the meter's most sensitive setting (200mV?) and without a battery connection, all register a tiny amount of voltage. So I switched over...
  14. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    You're probably right. I experimented with external halls for a bit and found a working combination within the first 6 tries by just changing the hall wires and keeping the phase wires the same. Although I wasn't able to get the external mounting right but I might revisit that again. On my...
  15. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    Here's a video of the motor spinning. Sounds really noisy, probably the chain and the mic being sensitive. It didn't sound as noisy when I was testing it. But it spins. On this video it was cutting out, most likely because I was hitting LVC already because it was running better the previous...
  16. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    Thanks for the replies! Here's a link to the motor I used: http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=18184 This seemed like the best one for EV use among sub-$100 motors in stock at the time I bought it. It's also a good fit in the BladeZ scooter. On your question...
  17. I

    Help with making a Turnigy Aerodrive SK3 work with halls

    Inspired by the RC builds here, I got a TURNIGY AERODRIVE SK3 – 6374-149KV outrunner from HobbyKing for my BladeZ electric stand-up scooter. I installed internal halls and went through all 36 combinations for the hall and phase wires. However I can't find a really low current draw when testing...
  18. I

    Dual Controller, Single Stator ?

    Cool, thanks for the info. I'll give doubling up for higher amps a try. And when I get the free time, maybe I'll experiment with connecting a couple of brushed controllers in series too since I have a lot of controllers. Probably keep the batteries and all other connections separate, use a...
  19. I

    Dual Controller, Single Stator ?

    Hey, did you ever test this? I ask because I was thinking of doing something similar for my electric scooter. I have a couple of Bladez XTRs that have brushed motors, and I have a lot of brushed controllers (I bet more than a hundred, bought them in bulk on craigslist). I was wondering if...
  20. I

    Good cheap multimeter?

    Hello, Sorry to hijack, but how's the accuracy on the ebay multimeters? I got one, but now the voltage readings between the ebay multimeter, my hobbyking RC charger, and my 6s voltage monitor (the ones that connect to the balance wires) are all different. Is there a good way to test which one...
  21. I

    Can I series-connect chargers for convenient Lipo charging

    Thanks for the replies. I hear you about being patient with connecting and disconnecting my packs in series for discharge and parallel for recharging, but I always have a feeling this is KFF waiting to happen (on a side note, I actually worked at KFC before hehe). I got some sparks flying the...
  22. I

    Can I series-connect chargers for convenient Lipo charging

    Hello, I've learned a lot reading here, you guys are a great resource, and I have built a couple of 48V ebikes. I have hobbyking lipos and an RC charger connected to a PC power supply. I parallel charge my batteries, but it's cumbersome to disconnect and reconnect the batteries, and this...
Back
Top