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  1. Capo_au

    Guide: How to estimate the torque of a BLDC (PMSM) electric motor using only its Kv and current draw

    Hey everyone I recently put together this blog post on how to estimate the torque of a brushless permanent magnet motor based on its Kv and current draw. It's probably nothing new to most of you on here but it might still be of interest all the same. If you have any questions or suggestions I...
  2. Capo_au

    Ferrite as a stator material?

    Thanks for the link, that's an interesting read. I may be wrong, but from the looks of it a Lynch motor is just a brushed axial flux motor with solid conductors for the armature and possibly more than three phases. While the wiki page does mention that earlier motors used ferrite cores it also...
  3. Capo_au

    Ferrite as a stator material?

    I know i'm a little late to the conversation but I might be able to shed a little light on the topic. As was mentioned above, ferrite only makes sense for high frequency applications where minimising core losses are your main concern. This is because of its low saturation magnetisation, which is...
  4. Capo_au

    Astro 3210 group buy?

    I'm in a similar situation to redorblack, very interested in picking up a 3210 at this price but waiting on free time and funds. Neither of which i will have for at least 3 weeks. So for now you can chalk me up as an interested party, but nothing more.
  5. Capo_au

    Greenspeed Etrike Powertrain

    Thats great news. When the dust settles on this trike plan I will put an order in. So far its look as though I will be after the motor, single stage 'eDrive', a mount (size not known atm) and if that wasn't enough, one of your sprocket adaptors. So pretty much the whole package. I'm holding...
  6. Capo_au

    Greenspeed Etrike Powertrain

    Thanks Grinhill, that is exactly the information I was looking for down to the letter. :D
  7. Capo_au

    Greenspeed Etrike Powertrain

    Hello all I'm trying to find answers to a couple of questions if anyone is able to help. I'm having a little trouble trying to calculate the top speed for an electric trike project i'm planing. Unfortunately i'm a complete novice when it comes to most of this so bear with me. In short, i'm...
  8. Capo_au

    Project #3. Two motors, Three wheels, Six grand!

    Yep, like most things its only applicable up to a point in the real world. Unless your lucky enough to be cruising around on a polished concrete floor, a wider tire will no doubt help. But short of modifying the frame, is it possible to put a wider tier on this particular trike?
  9. Capo_au

    Project #3. Two motors, Three wheels, Six grand!

    Very true. While on the topic of basic physics principles I should also bring up something else that bugs me. Traction is not proportional to tire size. If two tiers of different tread widths are placed on the same (perfectly flat) surface with the same weight placed on them (including tier...
  10. Capo_au

    Show us you diy LED lamp!

    I love that 100mm LED :D I will have to add it to my ever increasing list of projects. Seeing as its connected to a wall socket I wouldn't be able to resist making it brighter with a 7xXP-G LED MCPCB from cutter.com.au. Anyway, this might be appropriate seeing as there are quite a few trike...
  11. Capo_au

    High power RC motor and drive unit production

    wow what a read.. well its 4am here and I just finished trudging my way through all 70 odd pages of posts :shock: At lest now I'm all up to date and more confident than ever that this setup is perfect for me. Any chance on an update Matt? Have you sold many more drives in the last few months...
  12. Capo_au

    Greenspeed Trikes + Cyclone Front Crank Compatibility

    Heh, welcome to my world :D Greenspeed trikes are a blast and a lot easier to ride than a KMX I find, hence the price differences. Just make sure you use your flag! Oh and I highly recommend investing in a bike horn of some description. They are very hand when trying to make your self...
  13. Capo_au

    Is Global warming real?

    Wow I must say, I find that poll result a little disturbing.. Having studied the topic both formally and informally I guess its easy to become disconnect with public opinion at large. :cry: Or maybe its just that the public opinion in the US is a lot different to that here in Australia.
  14. Capo_au

    Greenspeed Trikes + Cyclone Front Crank Compatibility

    I might be able to point you in the right direction. A friend of mine recently bought a recumbent trike off this bloke. Although he builds and sell's his own trikes he is also an official Greespeed dealer and their head R&D man, if i recall correctly. He seemed like a nice enough guy so I doubt...
  15. Capo_au

    Project #3. Two motors, Three wheels, Six grand!

    In the mean time I stumbled across VRdublove's Channel on youtube. His vid's should keep my thirst for high powered trikes quenched for a little while at least :D No crazy where spin on his version, however the title of his latest video did state it was only running at 40%. Anyway, his...
  16. Capo_au

    Project #3. Two motors, Three wheels, Six grand!

    Thanks for the update, cant wait :D
  17. Capo_au

    Project #3. Two motors, Three wheels, Six grand!

    Any word on that Video Matt? :?:
  18. Capo_au

    Project #3. Two motors, Three wheels, Six grand!

    And thats legal? :shock: Here in Australia regardless of your age you are prohibited from driving a bike with more than 260cc engine capacity or taking a passenger with in the first 12 months of getting your motorcycle licence. This is something my mother was always thankful for when my...
  19. Capo_au

    Project #3. Two motors, Three wheels, Six grand!

    Thanks for the follow up, its always interesting to hear the opinion of someone who deals with litigation for a living. You mentioned in one of your previous posts that you plan to enclose nearly everything on the bike. Is this still the case for your new designs? Congrats on your third sale...
  20. Capo_au

    Project #3. Two motors, Three wheels, Six grand!

    Arh ok, very interesting so thanks for the info. I suppose you can’t blame the insurance companies for not wanting to touch your little endeavour with a 10 foot pole.. That amount of lithium alone would be enough to make it a high risk venture before you even consider that 10kW digit...
  21. Capo_au

    Project #3. Two motors, Three wheels, Six grand!

    Just out of interest, what kind of warranty do you tend to offer on the products you manufacture? Not just necessarily on your fantastic trike, congrant's on its upcoming success by the way, but on your e-drive systems etc. Also as a small business how do you handle your public liability...
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