Recent content by theRealFury

Well i think that concludes this thread then. Dont give Leaderhobby any of your $$$ as its throwing it away. I must admit im not surprised given the insane prices they are charging for stuff, but i guess you never know until someone / or some people play guinneypig and order a sample.

I have an 8 speed freewheel on my HS3540, i didnt have to stretch the frame (it first but perfectly, no free space at all on my stock 135mm dropouts), i did need an aditional washer but thats it. Been working for about 1800 miles now :)

Hmm, being yellow i would of thought they were TS, GBS cells are usually a light blue/green colour. What is the weight of the 12V 60AH pack without any cabling. is it 9.2KG? If its closer to 10KG then its TS... i think GBS has about a 10% better energy density than TS.

Thats not regen mode, thats just Discharge+ mode which used an external load such as a resistor to increase discharge power. The regen discharge specifically means discharging one battery to directly charge another. Basically a storage battery takes the place of the power supply in a normal RC...

Really nice work, te car looks amazing. Just a shame its got $300,000-$500,000 written all over it, which basically puts it in the bracket of fantacy car in my mind. I dont doubt that 92KWH can do 600KM... these claims are usually backed by a small print stating driven on flat ground at an...

Hey, @ 2.75c discharge 10v of sag i would say is very normal. As for the cycle life. they are reated for 3000 cycles at 0.5c discharge.. or 20amps discharge. You are discharging 5x that fast at peak.. i would immagine therefore that your predicted cycle life would be somewhere in the 500-800...

Hello, your ~10v of sag is not that bad really, during the summer with my old 36v LI-MN battery i used to get ~3V of sag @ 2C but in the winter that voltage sag was going up to 4-5v @2C. I would immagine what you are seeing is about normal for a TS pack that is run @~2C discharge...

Yea, Nichcrome wire is something that can be used, dont know why i didnt think of it at the time as i use it myself lol, but like you say, to get a decent current you need a lot of it, i only have about 2 foot of it from a hairdryer i butchered. on my 2 cell tests at about 8V i could only pull 5...

Thats true, but that is the equivelent of a dead short, which will give a test of burst discharge BUT will have negative effect on the cell if it is used to test capacity, and also with that you are unable to choose the C rating to which you discharge at, so will be unable to see how it performs...

apart from a higher volatage throughout the discharge curve leading to slightly more w/h coming out compared to say a 20-30C normal lipo, i have also not seen any evidence that they are any better in cycle life than any other lipo. What also remains to be seen is how many cycles the average...

Discharging a single cell is not as easy as it would seem, well discharging it quickly at least. You could easily discharge one with a cheap lipo charger that also has a LiFe setting but they usually only discharge at 20-25W unless you pay $100+ for a decent one with either regenerative...

i dont know why, but the Kokam cell 55205130H @ 11AH and 55amp continuous, 110amp peak seems like a really nice cell for a mid range Ebike. I know they would suite me with my current power requirements IF the specs were legit. 12 of these would be 44v nominal and 11AH at ~7.9lbs. Now, if you...

couldnt you just hook up a DC/DC converter such as the one Lyen sells to the solar pannels and set output voltage to 16V or something of the like. They are rated for 3amps so 1.6amps of solar should be fine for it and it would ramp the current supplied to the charger down as the solar wattage...

I have read that the saturation point of the stator is around 10KW but anything over 2-3KW (depending on ambient temps) will need to be thermally monitored to prevent overheating. 5KW will definately need monitoring as others have cooked the windings on less power than that.

Excellent, thanks for the links, im still reading them now. I had no idea this was happening. Nice to see school children being enducated in EV's and especially efficiency, these children are the car designers of tomorrow and the more of this type of thing they do the better the cars are likely...