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  1. hillzofvalp

    DD Motor

    ...abandoning
  2. hillzofvalp

    Stealthy Index Finger Throttle/Regen Variable Pressure old Button

    removed artwork
  3. hillzofvalp

    Outrunner Stators with no tooth tips.. cons?

    I'm quickly learning how hard it is to wind high slot count, small diameter count outrunner motors. The easiest way to wind I think would be to hand or machine wind a single tooth on a separate mold, and then slide the winding onto the stator. The problem with this is that for it to be a tight...
  4. hillzofvalp

    FEMM Help needed

    I can do basics of motor model in FEMM with no scripts or add ons. I'd like to simplify the workflow and get a motor spinning in FEMM. If anyone can show me or teach me how it'd be nice... OR perhaps do final analysis on my motor for me.. even better. Farfle is busy. I heard miles may be able...
  5. hillzofvalp

    How far is your average eboard ride?

    Curious. Miles/Km/minutes
  6. hillzofvalp

    delete

    deleted
  7. hillzofvalp

    Interesting side effect of motor varnish

    "Varnish applied to a motor winding may also cause bearings to rust when the acid generated by varnish gas is absorbed into the grease of the bearing. Be sure to test for this condition, and be aware that changes in procedures, such as drying time changes, may affect this condition." -NMB
  8. hillzofvalp

    Recommended Non-DIY tab welder (80Ws)

    Looking to weld some 18650s in large quanities. Rather retire my homebrew welder for consistency and reliability. looking for bang for buck, no pun intended I see some ~$300 Chinese units on eBay that seem like they would work. I may be able to open one up and see if I can put my cap in if it...
  9. hillzofvalp

    Where to buy A123 18650 in volume?

    Where to buy A123 18650 in volume? Directly from them? Alibaba?
  10. hillzofvalp

    Guess What? Your CA V3 has built in security!

    It's a fairly simple enabler/disabler that 99% of thieves won't be able to figure out upon trying to ride away on your bike. I don't feel like putting a key or RFID on my motorcycle yet, so I will employ this method when I'm in high crime area. Set profiles 1 and 2 for 0kW. Then set profile 3...
  11. hillzofvalp

    Is there a 1kW sized outrunner with skirt bearing?

    Hey guys, I'm looking for a skirt bearing outrunner to make my friction drive more reliable. I was thinking 5065 series or something a tad smaller. It seems like there aren't any skirt bearing offerings because of target market. Is there a demand for these on ES?
  12. hillzofvalp

    Mini cooper 4WD hybrid a good idea?

    I love mini coopers. That aside... I love RWD cars. People have converted gas FWD minis to RWD. But I figure if I were to make a mini electric RWD, the first time around I would want to leave the ICE since I need it to be semi-reliable and go 400 miles per 7 hours sometimes. Plus I can't afford...
  13. hillzofvalp

    Mind blowing emoto kick starter project dubbed "wind cycle"

    http://www.kickstarter.com/projects/windcycleev/electric-motorcycle-turbine-charging-system-and-ev?ref=live I wonder if he'll get funded. :? :wink: :shock:
  14. hillzofvalp

    2.5kWh + ebike?

    What kind of ebike would you put a 2.5kWh 28S A123 pack on? I'm building a small motorcycle/moped and the pack is huge. I was thinking maybe of using it on a trike as well for some ultra efficient treks around the coast of lake michigan. What would you do?
  15. hillzofvalp

    Mechanized, motorized crew boat project proposal

    I have wanted to do an electric boat of some sort for a while. Finally, my friend and I had the idea of a high performance electric row boat in which the original oars (up to a crew-size of them linked together) are driven in unison by one motor (my cromotor?). The kind of mechanism that we...
  16. hillzofvalp

    I've been invited to help in the design of cop ebikes...?!

    ....Muah Muah Muah.. Going to demo the cromotor. Which Power level should I show?
  17. hillzofvalp

    Sampling CA ThO Throttle Output with Arduino Circuit Problem

    Hey guys. I am sampling the Throttle signal from the CA in order to automatically control headlight and brake light. The code logic is as follows: 0-1V (shutdown lights) 1-1.25V (solid LED brake light, turn on headlight); 1.25V+ (blinking red brake light, turn on headlight); Here's the issue...
  18. hillzofvalp

    Hub Motor Axle Material Choice

    What do you guys think? I was thinking a variant of 4140 known as ETD-150 tensile strength 130,000 psi Rockwell C32 It is supposed to machine fairly nicely, but not as nicely as 41L40: tensile strength 85,000 psi Rockwell B96-B100 Which should I work with? They are both about the same...
  19. hillzofvalp

    I'm working for Jimmy Johns! (delivery)

    So this came up quick. I've dreamed of this job for a while.. and I start on monday. I always thought it would be a perfect exploitation of the bicycle (and a great tip getter). I'm sort of nervous because I haven't done delivery before and I haven't been put in a position where the bike has...
  20. hillzofvalp

    Could removing steel lower kv of motor?

    Hmm. Recently I milled the inside profile of my stator from my cromotor to prep it for a snug fitting water cooling channel ring. Ever since I did this I have noticed my top speed come down about 2mph or 8%. Could this be from less iron losses? Does this greatly affect kv? I estimate that I...
  21. hillzofvalp

    HoV's Exploration of Water Cooling w/ Oil Bath (Cromotor)

    Update: I am implementing water cooling channels in my cromotor, with the possibility of an oil bath as well to supplement the water cooling. Scroll all the way down and skip past the video of milling the stator on CNC machine.
  22. hillzofvalp

    Vertical or horizontal "Drop outs"? which is more suited

    I am doing a motorcycle conversion.. I'm extending the swing arm and can't choose what the slots should be: vertical or horizontal. Benefits of vertical: -Natural wire exit angle -able to cold set swing arm for vertical alignment (?) -near impossible for wheel to ever go out of misalignment...
  23. hillzofvalp

    Most cost effective, timely method of matching 350 M1 cells.

    So I'm geting a bunch of A123 cells all having similar cycle life but very low use (<10 cycles). I have two hyperion 1420i. What is the easiest method to match all the cells into groups so I can create 28 11p modules with similar capacities? I figure I can charge all the cells together, then...
  24. hillzofvalp

    How to prevent water ingress for Outdoor motorcycle packs

    ? Seal enclosure? lock water out (or in?) leave vented? apply dielectric to all the nickel and in crevices? which dielectric?
  25. hillzofvalp

    Garolite between 12p7s modules.. okay? what thickness?

    I plan on stacking 4 12p7s a123 m1 modules so that large surface area of nickel is coinciding with another face of another pack. (~7x13 inch area). I understand Garolite is good for this application... (G-10). but what thickness? Do you suggest alternative method or other precautions putting two...
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