Okay I just purchased a ping 48 V 20AH off of eBay and am waiting for delivery. Now I need advice on which motor to purchase. I've narrowed it down to a crystalyte 408 from itselectric.ca or a crystalyte cruiser which I believe is a 5302 from electricrider.com. What I'm looking for especially is reliability and longevity. We have hardly any hills where I am and a speed of 20 mph would be all I need most of the time but having the ability to go faster would be good also. I have a commute of about 21 miles round-trip. I neither want the motor to wear the battery out nor the battery to wear the motor out, but would like the optimum motor for this battery. Which motor would be best for these applications? Thanks in advance for your responses.
A one word answer is all I get. What type of forum is this? Anyway, I was just advised that the ping is not powerful enough to run the Phoenix, so I guess I will get the 408 unless somebody says otherwise.
Reviewing the electricriders.com site and the Phoenix motor, I see 40A controllers recommended. The ping 48V 20AH pack claims to have a rated capacity of 20A and a maximum continuous discharge capacity of 40A. Since these are all scientific terms (heh), it would seem to me that a 40A continuous discharge battery should power a 40A controller just fine.
Lets say though we are dealing with new math or some other nefarious system of quantification, they must sell a battery for the Phoenix that is powerful enough; are there specifications available for that battery so a comparison can be made with the ping pack in order to determine why it's deficient?
You paid dearly for the ping pack, I'm very puzzled why you can't use it with the Phoenix.
The problem with the Ping is that it cuts out at 60 amps, which happens during peak current for the 5302 when starting up from an abrupt stop and going up steep hills. When this happens, it requires disconnecting the battery and reconnecting it, which can be inconvenient. One way to avoid this is to increase the current limit on the battery by adding solder to the battery's over-amp shunt. However, some feel uncomfortable doing this mod.
Anyways, the 408 should go about 24 mph top speed, unassisted, at 48V. If you want a higher top speed, you should look at a "lower number" 40x motor like the 405 or 404(purchasable from ebikes.ca) which should get you to 30 mph top speed, unassisted. Since you're living in a non-hilly area, a faster speed bicycle should suit you fine for what it lacks in hill-climbing power. If you want more hill-climbing power or greater acceleration, you should look at 35 amp or higher controllers with whatever 40x motor you're looking at. The higher amp limit should let you take advantage of that extra power the 48V20AH can give without causing it to cut-out.
(BTW, endless sphere is haven for this kind of information. The forum members there are... well... very helpful. - including me. )