Search found 83 matches

by tanstaafl
Apr 15 2018 7:32pm
Forum: Battery Technology
Topic: DIY LiFePO4 48v pack - What am I missing?
Replies: 9
Views: 1362

Re: DIY LiFePO4 48v pack - What am I missing?

I built a pack out of similar cells. They're not identical, so I can't speak to the quality of the ones you've linked, but the ones I got are pretty much just as described and seem to be able to handle a decently high discharge rate. I built a large battery and it's doing well. In hindsight, however...
by tanstaafl
Nov 18 2017 2:58pm
Forum: General Discussion
Topic: Differences between the old and new version of phpbb & proposed changes
Replies: 137
Views: 30316

Re: Notes on the differences between the old and new version of phpbb

Okay, there seems to be no civil way to fix this http/https cookie forgetting issue, so i patched phpbb's code so that it rewrites urls like: https://endless-sphere.com to https://endless-sphere.com and https://endless-sphere.com to https://endless-sphere.com. When you link to the site in the futur...
by tanstaafl
Nov 18 2017 12:12pm
Forum: General Discussion
Topic: Differences between the old and new version of phpbb & proposed changes
Replies: 137
Views: 30316

Re: Notes on the differences between the old and new version of phpbb

Strange. When I clicked on one of the links from another thread to come here, it didn't have the problem (still shows me logged in), but when I click the links from amberwolf, it's as if I had logged out. Refreshing didn't make the problem go away. The difference I can see in the URL bar when this h...
by tanstaafl
Nov 18 2017 12:02pm
Forum: General Discussion
Topic: Differences between the old and new version of phpbb & proposed changes
Replies: 137
Views: 30316

Re: Notes on the differences between the old and new version of phpbb

The difference I can see in the URL bar when this happens is that there's a session ID added to the URL in the logged-in version of the pages vs the links clicked on from a post or a signature, etc. So, for instance if I click on the link my signature to go to my trike thread http://www.endless-sph...
by tanstaafl
Nov 15 2017 11:08am
Forum: General Discussion
Topic: phaserunner.com domain name for sale.
Replies: 8
Views: 1335

Re: phaserunner.com domain name for sale.

Is he "judgement proof"? (so poor you can't win any money in court no matter what he does) If not, keep your options open.
by tanstaafl
Nov 14 2017 11:48pm
Forum: General Discussion
Topic: phaserunner.com domain name for sale.
Replies: 8
Views: 1335

Re: phaserunner.com domain name for sale.

Yeah, but somebody should have their lawyer send him a nasty cease and desist letter. This doesn't seem to be a "good faith" use of some trademarked names. Gotta protect those trademarks or lose them.
by tanstaafl
Nov 14 2017 5:12pm
Forum: General Discussion
Topic: phaserunner.com domain name for sale.
Replies: 8
Views: 1335

Re: phaserunner.com domain name for sale.

Going after an individual's forum name seems less predatory and more pathetic. Why would he try to sell this:https://www.ebay.com/itm/amber-wolf-com-domain-name-for-sale-amberwolf-endless-sphere-moderator-cargo/182838312247?hash=item2a92033d37:g:tnQAAOSwLF1X3eV9 What can he hope to actually accompli...
by tanstaafl
Nov 14 2017 4:56pm
Forum: General Discussion
Topic: phaserunner.com domain name for sale.
Replies: 8
Views: 1335

phaserunner.com domain name for sale.

I have a pretty low opinion of people that poach other's names and grab the associated domain name. It's a somewhat questionable practice, to me. It seems especially problematic when it's a name that should be owned by somebody I've had dealings with. So it was a bit troubling when I saw the phaseru...
by tanstaafl
Nov 14 2017 2:53pm
Forum: E-Bike Technical
Topic: My new bike with MAC motor, Grinfineon, TDCM sensor
Replies: 29
Views: 3305

Re: My new bike with MAC motor, Grinfineon, TDCM sensor

The most likely thing is that it blew because the current actually exceeded the fuse's limits long enough for it to do so (even if the current metering doesn't show it). If this happened, and the metering didn't show it, you might want to reverify the shunt calibration, putting another current mete...
by tanstaafl
Nov 14 2017 1:54pm
Forum: E-Bike Technical
Topic: My new bike with MAC motor, Grinfineon, TDCM sensor
Replies: 29
Views: 3305

Re: My new bike with MAC motor, Grinfineon, TDCM sensor

I've been working on my parameters for the new bike -- lately up and down throttle rates and AGain. Yesterday I had a problem where the throttle response didn't seem to start until I had maxed out the throttle. Once it started, it seemed to work over the whole range. Then, mysteriously, the problem ...
by tanstaafl
Nov 14 2017 10:40am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4523
Views: 802267

Re: Cycle Analyst V3 preview and first beta release

It's very strange, but the problem seems to have gone away overnight! I didn't make any changes at all after my earlier update, but this morning there's no "dead throttle" problem. It responds from the very beginning. I'm going to continue to tweak the parameters to eliminate any remaining "pulsing"...
by tanstaafl
Nov 13 2017 11:45pm
Forum: E-Bike General Discussion
Topic: Blue EVG bike stolen in Orange County
Replies: 16
Views: 1522

Re: Blue EVG bike stolen in Orange County

Yes you are right - I have seen bike racks around here that are bolted to the ground with loose/missing nuts on the rack. You basically could steal the bike and the rack in seconds if your van/truck/uhaul is close. "Here" is the area from Irvine through Garden Grove and Westminster. A lot of foreig...
by tanstaafl
Nov 13 2017 11:41pm
Forum: E-Bike Reviews & Testing
Topic: PowerVelocity controller review
Replies: 348
Views: 43834

Re: PowerVelocity controller review

I'd like to find some TO-220 IXYS mosfets with low Rds and high wattage. This is the best I have found... IXFP180N10T2 480 watts is comparable to the AOT290 at 500 watts. .006 ohms vs .0035 ohms for the AOT290...not so great. 180 amps vs 140 amps, but both are leg limited to 75 amps so pretty much ...
by tanstaafl
Nov 13 2017 10:18pm
Forum: E-Bike Reviews & Testing
Topic: PowerVelocity controller review
Replies: 348
Views: 43834

Re: PowerVelocity controller review

I'd like to find some TO-220 IXYS mosfets with low Rds and high wattage. This is the best I have found... IXFP180N10T2 480 watts is comparable to the AOT290 at 500 watts. .006 ohms vs .0035 ohms for the AOT290...not so great. 180 amps vs 140 amps, but both are leg limited to 75 amps so pretty much ...
by tanstaafl
Nov 13 2017 6:40pm
Forum: E-Bike Reviews & Testing
Topic: PowerVelocity controller review
Replies: 348
Views: 43834

Re: PowerVelocity controller review

I'd like to find some TO-220 IXYS mosfets with low Rds and high wattage. This is the best I have found... IXFP180N10T2 480 watts is comparable to the AOT290 at 500 watts. .006 ohms vs .0035 ohms for the AOT290...not so great. 180 amps vs 140 amps, but both are leg limited to 75 amps so pretty much ...
by tanstaafl
Nov 13 2017 1:46pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4523
Views: 802267

Re: Cycle Analyst V3 preview and first beta release

I'm having a strange problem with my CAv3. It's running the latest beta firmware. I recently increased my battery voltage to 60v nominal (from 36v) and I now notice a much more pronounced "pulsing" from both my throttle control and from my torque-PAS (TDCM). I've decreased both AGain and WGain a bun...
by tanstaafl
Nov 13 2017 11:10am
Forum: E-Bike Technical
Topic: My new bike with MAC motor, Grinfineon, TDCM sensor
Replies: 29
Views: 3305

Re: My new bike with MAC motor, Grinfineon, TDCM sensor

Everything is working with the modified CAv3, external PS, and bigger battery. But I'm going to have to adjust something in the CA -- one of the gain parameters perhaps. There's a really bad "pulsing" to the applied power that wasn't there with the lower voltage battery. Some interaction of the gain...
by tanstaafl
Nov 13 2017 1:09am
Forum: E-Bike Technical
Topic: Destroyed my CA3?
Replies: 38
Views: 3472

Re: Destroyed my CA3?

It's actually still alive! It's hard for me to believe, but I actually got it to power on. There's a big scorch mark on the board and the ground connection is just gone. The polyfuse is half burned off the board and other stuff looked "scorched". The incoming power wires have melted insulation and s...
by tanstaafl
Nov 13 2017 12:47am
Forum: E-Bike Technical
Topic: My new bike with MAC motor, Grinfineon, TDCM sensor
Replies: 29
Views: 3305

Re: My new bike with MAC motor, Grinfineon, TDCM sensor

Except the handling will be better with the battery in the triangle--as long as is narrow enough to not affect your pedalling. It's not as bad as it could be with battery in the bottom of the bags near the axle, compared to up on the top of the rack, but it's better close to the center of mass of t...
by tanstaafl
Nov 13 2017 12:12am
Forum: E-Bike Technical
Topic: My new bike with MAC motor, Grinfineon, TDCM sensor
Replies: 29
Views: 3305

Re: My new bike with MAC motor, Grinfineon, TDCM sensor

I've thought about getting (or making) a triangle battery pack, but the darn triangle is so small on this bike. I'm really not a big fan of the geometry, it's maybe half the size in the triangle as my touring bike. But then, it cost a small fraction of what I spent on my LHT, so I shouldn't complain...
by tanstaafl
Nov 12 2017 11:24pm
Forum: E-Bike Technical
Topic: My new bike with MAC motor, Grinfineon, TDCM sensor
Replies: 29
Views: 3305

Re: My new bike with MAC motor, Grinfineon, TDCM sensor

Thanks again to everybody that helped me fix my messed up mod to the CA. It's working just fine now. I've set up the external power supply, routed true battery voltage through on the unused speedometer wire from the controller (yellow wire on the CA plug), to a voltage divider (120K and 5.6K resisto...
by tanstaafl
Nov 10 2017 11:19am
Forum: E-Bike Technical
Topic: Public charging stations for e-bikes. Is there a standard?
Replies: 14
Views: 1446

Re: Public charging stations for e-bikes. Is there a standar

I'd love to see some kind of pay per use box produced that shopowners and the like could just plug into a dedicated 15 amp circuit, and provide electricity for charging ebikes at a rate that gives the property owner incentive to provide it. Even if the rate is considerably higher than market electr...
by tanstaafl
Nov 09 2017 12:35am
Forum: E-Bike Technical
Topic: It shouldn't be this hard.
Replies: 14
Views: 1236

Re: It shouldn't be this hard.

Just got another email from info@ebikes.ca. I have to give them full credit for trying to help -- replying to my email in a couple of hours (at night) is pretty responsive. The bad news is that wiring directly to the processor is my best bet (those tiny pins set so close together...) But the process...
by tanstaafl
Nov 08 2017 9:43pm
Forum: E-Bike Technical
Topic: It shouldn't be this hard.
Replies: 14
Views: 1236

Re: It shouldn't be this hard.

I received a message from info@ebikes.ca with the information I needed. They're helpful as always, and I appreciate it. As soon as I get home, I'll give it a try... It seems I was a little too quick with my praise. Here's the advice I got: CA_Pad_Layout.gif The via I have circled on the above diagr...
by tanstaafl
Nov 08 2017 4:29pm
Forum: E-Bike Technical
Topic: It shouldn't be this hard.
Replies: 14
Views: 1236

Re: It shouldn't be this hard.

The ADC sequences across a number of voltage sources. Right now your batt reference input is floating so when the scan gets to that input the sampling caps don't have a voltage to change the charge from the previous sample. So - the processor is really looking at a duplicate of the previous sampled...