Endless Sphere

Any feedback on this new gearbox from SRI, the 'archimedes drive': https://www.youtube.com/watch?v=zoaHeamUqBE Think this is any easier to manufacture (the one using ball bearings demo'd in the clear acrylic) or hold up to ebike abuse? Anyway, my kit has seen near-daily use for over a year without m...

A few more questions: - I need to extend the 'speedo sensor'. Is this a normal pair of wires or is it shielded? - In the 'battery config' screen, can I set a battery >99.0ah? Can I get an accurate battery icon without this matching my pack (120ah)? Maybe in a future release? thanks for the help thus...

Problem: My CA3 takes a long time to shut down. I have it in a 72v (20s) vehicle with two Curtis 1238 controllers, who's caps I believe are feeding the CA3 when I shut the contactor off. Is there a suggested way to address this? I've thought about inline resistors and optionally breaking the 72v wir...

I use a 24 V 80'-ish' lb Motorguide trolling motor with a Kelly 24 V brushed controller. ... As battery I use a 8S (24V) LiFePO4 70 Ah battery. But this could also be a regular series lead setup. I recently modified the trolling motor to be PWM controlled. What's a difference in battery does that m...

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Hi. I'm building another 72V AC powered ATV/UTV thing using Nissan Leaf packs and would like to avoid using a 12V battery. Some setups I've seen use a DC-DC Converter with a switchable 'enable' wire (Sevcon's DC-DC, some Delta-Q chargers, etc) that will turn on the DC-DC converter when pack voltage ...

Is it possible to *input* information to the CA3 over serial? I have applications where additional information is needed and would really like to be able to have a custom field or ability to flash a text string to say the lower field of the LCD for X seconds.

My Tangent driven bike is 47lbs with another 3.5lbs of batteries carried in my backpack (5ah 12s).

joecgz wrote: I'm a 75 years old

That is awesome. .

I found spraying lithium grease in my thumb throttle quite helpful. The resistance was more with the plastic being poorly manufactured (like most Chinese stuff) causing internal rubbing - rather than a super stiff spring.

My Magura twist throttle was buttery smooth right out of the box.

Justin, Are there plans to monitor cell voltage and provide cell balancing anywhere in the future? Maybe support CAN/i2c/whatever streams from other cell monitors? I trust the Satiator to not burn down my house when charging - but without a balancing option I'm still stuck with questionable means to...

Dave and a few others have mounted their Tangent kits within the Triangle. Seems to need a Horst link style aka VPP suspension frame where the pivot is behind the BB. http://i.imgur.com/cgWdK9C.jpg Motors on the swingarm seems to be the ideal solution, but not something you can do without a lot of f...

pms replied to.

Up for sale is my 60V, chain driven, GNG Mid Drive Kit. SOLD SOLD SOLD (retail price of $430) GNG kit official site: http://www.gngebike.com/60v650w-brushless In short, I took a spill at ~35mph and bent the stock, kinda crappy square end bottom bracket. Included however is a new ISIS splined Truvati...

The prototype LMX is still one of the coolest looking ebikes to date. Love the progress and all the videos. Keep it up! 8) too bad those brakes are not manufactured any more! hope mono 6 ti with even bigger rotor up front 242 mm front. Also 6 piston. I based my latest build around Hope Mono6Ti 225mm...

alaskaoneday wrote: Bullitt Cargo bike
...
first thing out of his mouth was, "YES!"

That is awesome.

Decided to jump in the tab welder game. Specs: 8x 0.11F (rated), 0.15F (measured), 15V ALEL caps => 120J 6x IRFP4004 MOSFETS, 40V, 1.35mΩ 6.35mm thick Al busbars Any more pictures, this looks rad. Did you mill the traces or use a photoresist? Any plans to sell kits/opensource? Voltage or discharge ...

Rad trailer; awesome (and fluffy) dog.

I use a Busmann (Eaton) 187-series breaker. It's marine rated and can be had in up to 200amps @ 48v. Busmann is an industry leader and milspec supplier for this type of stuff. http://ecx.images-amazon.com/images/I/51gbqTImGHL._AC_UL320_SR238,320_.jpg http://www.cooperindustries.com/content/public/en...

Another Hope user here (Pro II Evo) - no issues to date.

Also there's lots of talk about the noise of gearbox, but I think most people move out of my way on sidewalks and stuff because of the 'clack, clack, clack' of the hub as slow down .

Great looking bike.

kasparsd wrote:I'm Kaspars from Drive eO and we're the company building the car. We'll be happy to answer any questions you might have about the car.

Props on the build thusfar. Can you share more about the reduction box?

Damn Dave, that is sweet.

This is cool, but I worry this is unsafe. Not all extrusions are created equal. Some have a small taper to allow for preloading fasteners in high vibration applications - others are flat ... which when added to the normal deflection makes stuff wobble out. Also be sure to use the thicker, pre-instal...

Thanks Adrift, I see your edit. Will have to think on that, because I don't see how the first four digits is .01% chance? I don't grasp what it's judging the outcome against. A 9-sided die has 9 possible outcomes. Roll 4 die in a row and there are 6561 possible outcomes (9^4) or .01% you'll roll an...