Search results

Date Relevance Most replies

  1. makepeace

    e-longboard build

    Please please please fix those photo BBs, really keen to check yours out! Yeah I've just been using Solidworks cause it's what my uni provides for us. I haven't had any experience with other packages, but as a piece of software its VERY rough around the edges. I'm pretty keen to try out some...
  2. makepeace

    e-longboard build

    howzit ek se! Yeah I checked them out before I ordered a while back and they look a bit suspect. Also, the stuff in their kits isn't entirely what we need :/ so would most likely have to get them to bring it in, but it would probably be quicker (and cheaper) to bring it in yourself. It's been a...
  3. makepeace

    e-longboard build

    In terms of wire gauge, I think I calculated about 8 AWG a while back to be super safe, so yeah I guess I'll have to make provision for that mechanically. Yeah I'd be charging it like that, but the max charging rate is theoretically 2C. As they are in parallel, if I do 1C, I can theoretically...
  4. makepeace

    Boosted Boards Offering New Models, Lowers Price of Original

    Same. I don't know why you say it's prohibitive. You probably can't build a board with those base specs for less than $500 (on a DIY scale in any case). Markup of 200% is pretty reasonable I'd say for a product like this. I'm sure they've spent a lot of dev time and cash, and I'm sure people...
  5. makepeace

    Solar deck

    Cells under the board would be pretty useless lol. Unless you develop a new type of sun that shines out of the road. I think that it could work. I thought about incorporating this and/or piezo transducers in the board. It's not going to charge the board in any practical amount of time, but...
  6. makepeace

    e-longboard build

    Would like a bit of comments/criticism on my idea for battery connections. From what I've read the safest and best (in terms of longevity) way to charge LiPos is in parallel. In my case, I'm making my own "custom" battery setup using single cells. I need 8s, so I will use 8 cells in series. I...
  7. makepeace

    e-longboard build

    Thanks for the comments. I've been using Solidworks for about 3 years, but mostly on and off for Uni assignments. Every time an idea props into my head I like to model it to see what it looks like so I've become pretty good. Regarding the putting the batteries where I intend to okp, why would...
  8. makepeace

    e-longboard build

    Update time. Ok so I've ended up going with HTD 5, 9mm belt in the end. Everything else was either too expensive or not strong enough to be durable. Ordered two of them from SDP, waiting on those. Also, I've settled on an RR of 2.5:1. This should get me crazy torque with the two motors and 8s...
  9. makepeace

    Hendo Hoverboard and Lexus Hoverboard

    This is entirely stupid and impracticable. 2015 my ass. Does it come with a 10 m copper roadway so you can ride around your garden for an hour until you get bored? We're stuck with wheels for a while I'm afraid. At least until a cheap, small, light energy storage solution comes around.
  10. makepeace

    10S custom skate ESC: testers wanted!

    the. most. awesome.
  11. makepeace

    10S custom skate ESC: testers wanted!

    Sweet! Just a thought. And I'm glad it's not worth the bother :roll:
  12. makepeace

    10S custom skate ESC: testers wanted!

    No, in principle I very much disagree. Think about what's physically happening. Take it to the extreme and say (with a dual diagonal) that your rear motor is reversing and your front motor is going forward. Your board is going to rotate. Maybe not very quickly, but it will rotate. You have a...
  13. makepeace

    10S custom skate ESC: testers wanted!

    Was doing some thinking.. For dual/quad motored boards, being able to provide an "augmented" steering effect by (slightly) slowing down the inside drive/speeding up the outside drive when toggling the nunchuck left or right could be interesting. I know that I'm not going to be able to do this...
  14. makepeace

    belts vs chains

    you should just scale your RR based on the top speed to keep torque and speed characteristics the same. so work out your speed with your current RR and wheel diameter (Vt=w_motormax*RR*r_wheel) and work back to get your new RR based on new wheel diameter (RR=Vt/(w_motormax*r_newwheel). Either...
  15. makepeace

    stuff

    steps: - find the link to Austin's code on github in the nunchuck thread - download the code - have your uno + usb at hand - follow one of these guides until you have downloaded the arduino IDE, have your uno talking to your PC and made sure that you can upload code to it - open austin's...
  16. makepeace

    10S custom skate ESC: testers wanted!

    That was the first thing I tried. Took one look at the first profile I downloaded and did some measuring and it was *completely* off compared to the published data for these pulleys (tooth height and width). Maybe it was just a 1 off, but I decided I couldn't rely on those models for accuracy...
  17. makepeace

    10S custom skate ESC: testers wanted!

    I also really struggled to find information on profiles.. Seems very elusive information (and no wonder, because all of the good profiles are copyrighted + trademarked, nevermind patented). I've found a .scad where the guy wrote a program that renders almost every profile you get, fully...
  18. makepeace

    My in-da-hub motor mount attempt

    4 of these converted to wye :twisted: that's what.. 20kW? but i'm sure those motors are way overrated.. they're so small! edit: they can do 3kW electrical continuous.. that would be KILLER.
  19. makepeace

    10S custom skate ESC: testers wanted!

    Getting 28T GT2 3mm plastic pulley w/aluminium insert, 8mm bore for just over $6 from SDP, 255mm belt for just over $9. I figured plastic will be better as it's lighter and will cause less wear due to it absorbing more of the stress as it's a bit more elastic than aluminium. I think I'm going to...
  20. makepeace

    10S custom skate ESC: testers wanted!

    lol! ok well in that case.. if it's tried and tested then i'll eat my humble pie. but yeah, more info about that setup would be needed to properly analyse. personally though i think that if it was properly designed heeding the design ratings there's no reason why practice should be much...
  21. makepeace

    Motor Review | SK3 6354 245KV -vs- NTM 5060 270KV

    Cool video! Makes me feel good about my order of 2x NTM :D. I agree with the consensus that there are actually far too many variables in the setup to compare a single element ie the motors with a constant setup. It might be cool to compare the possible design setups, ie what kind of optimal...
  22. makepeace

    10S custom skate ESC: testers wanted!

    6mm is very different to 9mm. If you're already on the edge at 9mm, 3mm over the edge is going exponentially reduce the amount of torque you can handle before slipping. for example a 24T, 3mm GT2, 6mm wide, 270mm belt length at 6000rpm can handle about 0.75 Nm. 9mm wide can do 1.125 Nm. The...
  23. makepeace

    10S custom skate ESC: testers wanted!

    Ok maybe not 5 times. A bit of an exaggeration sorry :oops: , but by my calculations for 6000rpm, 24.83 PD, 9mm width and 270mm belt length its at least 1.5 times.. And that's excluding the fact that HTD belts always seem to be in the blue range that says "reduced service life to be expected"...
  24. makepeace

    10S custom skate ESC: testers wanted!

    Hmmm, I get what you're saying about the belts Svenska, however 2920 hrs is still not a gratuitously long life service life for this kind of product. If you ride for 1 hour a day, that's 8 years - never mind the abuse of an extreme environment with stones, sand etc getting into your drive...
  25. makepeace

    10S custom skate ESC: testers wanted!

    This doesn't make any sense. I would think that actually being able to transmit the required power at reasonable pitch diameters is enough of a benefit in itself. Belt slip is less, belts are stronger etc etc. The GT profile is just far superior, end of story. The only redeeming factor for HTD...
Back
Top