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  1. The Toecutter

    RC Drive Recumbent Trike Build

    You may have to redesign your battery pack in order to fit it onto the pack, as that is where it should go. Ideally on top of the pack to allow for the fan to dissipate heat, but on the side might work as well.
  2. The Toecutter

    A DB mountainbike, my 2nd build in progress

    I've been riding this around and when using the throttle, it developed a refusal to move when stopped. I have to get the bike moving to about 1.5 mph before the throttle will allow the motor to turn. Otherwise, the motor simply stalls out. This is the case even after removing the rear brake...
  3. The Toecutter

    Approximate cost of materials to build a basic chromoly MTB bike frame?

    Have you ever put any trike frames together? If so, I'd like to see.
  4. The Toecutter

    Leaf / leafmotor / leafbike high efficiency 1500w motor

    In my experience, the 90mm Sturmey Archer drum brakes in my Milan SL are adequate for panic stopping at 50 mph. They don't have as good a stopping force as Avid BB7s, but they are close. The Sturmey Archer's advantage is that they are a lot more consistent with regard to applied stopping power...
  5. The Toecutter

    Leaf / leafmotor / leafbike high efficiency 1500w motor

    I do. I use the Sempu with 68mm square-taper BB and a 115mm spindle width in both my mountainbike and trike. The mountainbike has a 4T wind Leafbike 1500W with a 7-speed cassette, and the trike has a 3T wind Leafbike 1500W with a 7-speed freewheel. I may upgrade the mountainbike to a front motor...
  6. The Toecutter

    Leaf / leafmotor / leafbike high efficiency 1500w motor

    My Phaserunner was very usable on a Leaf 4T in a 26" wheel at 1500W/96A. It wasn't very fast, but it was enough to keep up with traffic just fine, with enough reserve power to get out of trouble if it comes my way. But my application was a DIY velomobile capable of 45+ mph in that configuration...
  7. The Toecutter

    Leaf / leafmotor / leafbike high efficiency 1500w motor

    If you want something relatively inexpensive, light, efficient, reliable, configurable, regen-capable, and good all around, a Grin Baserunner or even a Phaserunner are both excellent choices. You won't be winning races against cars with these, but they're well-suited to being used on a daily basis.
  8. The Toecutter

    Leaf / leafmotor / leafbike high efficiency 1500w motor

    That explains why I have to pry the dropouts open with a flathead screwdriver upon installation.
  9. The Toecutter

    Sempu wanted

    Be careful when assembling the 5-pin JST connector to have all reference diagrams handy for both the Sempu and the Cycle Analyst or whatever other computer you are using.
  10. The Toecutter

    Sempu wanted

    I have some, but they aren't for sale as they are for my current projects and as spares. I was able to procure them from the link below...
  11. The Toecutter

    RC Drive Recumbent Trike Build

    If you put an aerodynamically slippery body over this thing, 750 Wh will go for a surprisingly-long distance at speed. My first build only needed 8 Wh/mile or so to hold 30-35 mph on flat ground, accelerating with 250W and once at speed, my pedaling accounting for about 1/3 the motive force...
  12. The Toecutter

    Tilting 3 wheels

    Most smart people and geniuses alike never even get the chance to fully develop their inherent aptitudes or to do something with them, most often due to their lack of having both time and money simultaneously. The established players don't want any competition, and would rather that those with...
  13. The Toecutter

    Tilting 3 wheels

    That body looks incomplete. Needs a tail section, windshield, wheel fairings, and roof.
  14. The Toecutter

    Pedal Car by Dan

    You definitely need some sort of suspension on that thing. Nice work!
  15. The Toecutter

    Tilting 3 wheels

    That appears to have much better aerodynamics than the Cybertruck. Nice work! I doubt Tesla stole your design for it. Elon was probably smoking some really strong weed and thought of some dystopian-chic aesthetic for a truck and decided to put that hare-brained eyesore into production. I think...
  16. The Toecutter

    Tilting 3 wheels

    That's how it happens not being born into wealth. There used to be starving artists. Now there are starving inventors. I know one who I went to college with, a gifted embedded systems designer. More than once, he sold ten-million+ dollar ideas he came up with to some corporation for $1,XXX just...
  17. The Toecutter

    Your Whours for kms

    Previous iteration of my custom KMX-based velomobile build(currently apart for more upgrades): ASI BAC4000 at 10kW and 200A phase current 20s6p Molicel P42A pack, 1.7 kWh, charged to 4.2v per cell. Leafbike 1500W 3T motor in 16" DOT rim with Mitas MC2 2.25" tyre. Total weight 41 kg, ready to...
  18. The Toecutter

    Your Whours for kms

    That seems off by a decimal place.
  19. The Toecutter

    Leaf / leafmotor / leafbike high efficiency 1500w motor

    I was thinking 0.2mm for an application where thousands of RPMs is a relevant operating point, even if the first digit has a one in it. There is certainly a tradeoff, but it's around the margins in either case. When you're pedaling the thing with the battery disconnected, where those margins...
  20. The Toecutter

    Leaf / leafmotor / leafbike high efficiency 1500w motor

    Why not go even smaller, to 0.2mm lams? I'd love a switched reluctance hub motor built to fit into 135mm dropouts and accommodate 7/8/9-speed cassettes while having a very stoutly-built axle and freehub body, with a matching control system that is CA compatible. It would be nice to get rid of...
  21. The Toecutter

    Leaf / leafmotor / leafbike high efficiency 1500w motor

    Do you know what size spokes are used to lace a Leafbike 1500W 3T 17.5kV hubmotor into a 22" bicycle rim or 18" DOT rim with a one-cross pattern? I have a 16" DOT rim for my 3T Leafbike with a Mitas MC2 16x2.25" at the moment, but it is still a bit small given the potholes around here, and with...
  22. The Toecutter

    Grin's rear all axle motor!

    I think there's currently a bug in the website. I went to their hub motors section, where it says there are 40 items, and get the message "We can't find products matching the selection." I'm unable to select any of the hubmotors they have available at this time. They may be in the middle of an...
  23. The Toecutter

    Leaf / leafmotor / leafbike high efficiency 1500w motor

    One thing to consider is that ferrofluid will be held between the rotor and stator by the magnets. Not only will ATF cause corrosion of sensitive components in the motor, it isn't going to stay put. Use Ferrofluid so that you minimize potential problems. It's worth the extra $20. Better than...
  24. The Toecutter

    Grin's rear all axle motor!

    There is now a 3T wind version of this motor available. My two side All-axle motors for my KMX have been ordered, as has a 5T wind rear All-axle for my Milan SL velomobile.
  25. The Toecutter

    Milan SL velomobile conversion

    Got a Grin All-axle 5T rear on the way for the Milan. I have to build the 21S pack for it. I decided on the 5T because wiring is my bottleneck with a faster wind. Since there's only going to be one motor powering it, I opted for electrical reliability over an extra 10 mph top end(which I'm...
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