dogman wrote:Only 24v-48v controller I have any experience with came with the old Wilderness Energy brushed motor kits.
You'll have to scour the internet to find somebody still holding stock in those controllers. I dimly remember a place called Java Cycles that had brushes. They might have a controller still. Another place was called campsolutions. Or camp solutions. I don't recall which spelling was the place that sold WE/ aotema brushed kits. A few others, I don't recall the names.
The WE controller might be too high amps. They called it a 35 amp, but I think it was more like 25. (lied about everything) But it worked fine from 24v to 48v.
bgnome wrote:I doubt the stock controller is pulling 35A continuous from the SLAs, but if it was, that is 840W which confirms the "safe-ish" limit of 900W. Two Ezip SLA packs is a lot of weight so I figure I should get some use out of them. I have no idea what the actual output of the currie controller is, but I figure 20A at 24V gives me 480W and at 48V I get 960W. Conservative use should allow this to work I think.
Ecrazyman has offered me a 48V 800W controller at $45 shipped. I think I will bite on this one and ask for the LVC to be lowered to 21V for the normal 24V usage.
dumbass wrote:august23...Wow, one of us is really confused. I'm assuming that bgnome is talking about a Currie EZip bicycle and your thinking about one of those little motorized scooters.
The EZip bike has a gearhead motor on them. And while I would never recommend riding an EZip hardtail bike over 25mph there are people doing 30+ with them.
The reason for 48v is because the bike is setup to except 2 24v packs which he already has. But I agree that actually pushing 48v through one motor is to much. Which I recommend a resistor pot on the hall to act as a governor that can be set to any limet you want.
dumbass wrote:oh yeah I always forget that Currie has Ezip and Izip scooters AND bikes. 25+ on a bike is fine... the scooter is a crazy though.... like me. Gearhead eh? I'll have to look those up.
bgnome wrote:Thanks for the input guys.
I think this mod is going to sit on the back burner for a while. Keywinn has not gotten back to me in a few days, so I looked in the controller and found the 63V caps and 2 pairs of fets: one pair are IRF 3205s and the others say F1 H33, but I can't get any info on those. I have not been able to scrounge up much info on this particular controller (does not look like the old ananda), but I will keep looking.
bgnome wrote:I apologize if it was not clear, but the wife is riding a circa 2007 Currie Ezip Trails, same model as seen here:
This takes the rack-mount type batteries. The rack is a custom piece that houses the controller and wiring harness, as well as a DPDT switch to select which battery pack. I have used the conversion kits and thus have 2 fairly new SLA batery packs which are rated 24V 10AH each. I plan on rewiring the switch to operate parallel/series. She is likely only going to use it with 1 battery for her own recreational purposes due to weight, but I would like to make the upgrade so that I could use it for longer distance commuting, but I want to make sure that she can still use it the same way with minimal aesthetic changes.
I will take more pics of the controller when I attempt this mod in earnest. It is not the current potted controller that they sell in the conversion kits, although it is the same 5 wire throttle. I currently have it swapped in to my Terratrike Path with the Currie conversion on it and a 24V Ping, while she is running the modern controller. It is not potted at all, has 4 fets, and the brake cutoff. The sticker is mislabeled as brushless, as it definitely runs my DC brushed motor, which is wired in reverse.
It is not the Ananda described here:
Stock Wiring Diagram for Bike:
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