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I'm afraid someone beat you to the "Fantasy Quad". It is an actual bike by Lightning Recumbents. Lotta money though! Keep on writing as I really like your stuff!
otherDoc







docnjoj wrote:Damn man, you need to go on "the road" with this act!
docnjoj wrote: Very funny stuff and clever too. A rare combo these days. I teach college physiology and pathology but I still remember those physics "tests"! Great stuff.
otherDoc
amberwolf wrote:I terminate charge at 4.15V/cell max, because there isn't much energy added above that anyway. Lower charge values extend life of cells.
I terminate discharge at 3.6V/cell min, because there's not much energy left below that, and lower discharge extends cell life. I actually don't really go down that far, but that's my cutoff level I wouldn't go below unless I absolutely had to for some wierd emergency reason. 3.7-3.8V/cell is really about as far as I typically ever deep discharge, and rarely actually go below 3.85V/cell, as I don't usually use all of my range before recharging.
I figure at worst I am not using about 20% of my possible capacity, but my pack will last longer, with less risk of unbalancing it. Since I bulk charge and only periodically check cell balance, this is important.I have yet to see any real cell imbalance, perhaps 0.01V difference between cells. Not yet tested that under load/ride conditions, just sitting connected to the powered-on bike.
I would use the cheapest meter on teh bike, so that if someone damaged it or stole it, I wouldn't be out much.Realistically they're all accurate enough for a pack-level measurement.
One caveat about using only a pack-level LVC: you may want to stop discharging at a much higher voltage than you would if you had cell-level LVC, because unless you stop to check cell balance periodically, you might find you have a cell that is so low for some reason that it ends up being killed by continuing discharge after it's really really too low a voltage to continue, but while the rest of the pack is still very "full". This is not a likely scenario, but it could happen, and has happened to people before.
The same is true of pack-level HVC.
Once you have thoroughly characterized your packs and cells, and know their limits, you can push closer to them, but before you have deterimined the limits, you may want to stay in a narrower probably safer range.


ddk wrote:I can now ride My Trike(TM) with one hand on the tiller, the other hand loose making random hand-signals

TopCat wrote:ddk wrote:I can now ride My Trike(TM) with one hand on the tiller, the other hand loose making random hand-signals
LOL...do you mean gestures to offending motorists![]()
Regards
Tom

ddk wrote:I'm pretty much done with the My Trike(TM) project.
No more funds for the solar crap this year.
Conclusions:
-if there was a bike/trike manufactured that did what My Trike(TM) can do I would have bought it. That is, being able to climb the steepest hills while remaining below my country's legal limits for speed and power for an electric bicycle.
-E-tricycles are better than E-bicycles- no debate needed
-Most of the cheap e-bikes I've recently looked at or have purchased work pretty good. They don't, however, climb hills pretty gud.
-modern specifications on EVERYTHING, if provided, are apparently allowed to be completely bogus
-on-line purveyors of merchandise are weird... sometimes reliable, ofttimes not.
-on-line ex-spurts should never be trusted -really. Do do your own do-do. You CANNOT verify who you're communicating with on the interwebbs. Most so-called ex-spurts are merely parrots. And keep your private information about yourself to yourself.
Have a nice life!

SamTexas wrote:
Can you post a few pictures of your final, finished etrike? Can you also summarize the changes to made to the original trike?

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