Crystalyte hs 3540 vs BMC v4 speed

[spiritxxx733t]

Hi all,

need some advice please, planning on building my first e bike.. have decided to either buy the crystalyte hs 3540 (from Ebikedeal.com) or bmc v4 speed (from http://www.ebikessf.com)..

im looking for forums users guidance and advice on which set up is better..

I dont plan on over volting or anything like that, primary usage would be commuting to work and shopping errands.. hoping for speeds close to 30 mph or just over this if possible..

I plan on using with a PING 48 volt, either 15 ah or 20 ah, the 20 ah has max discharge of 40 amperage (whatever that means) and the 15 ah has a max discharge of 30 amperage.
( can someone explain max discharge please, thanks).. which battery would you recommend?

what sort of max continuos speed can I hope to get with each motor..

which motor is more reliable,? which is more easier to service?

is the direct drive so hard to pedal without power? is the direct drive much heavier?

what are they like when it comes to mounting a disc rotor to them.. which one is has more spacing and easier to fit a rotor please?

what are your thoughts on the crystalyte apm display and compared to the cycle analyst?

anything else I should know to help me decide..

p.s my commute is mainly flat, but going on shopping errand to the supermarket involves some long hills?

many thanks

 

[wesnewell]

Please go to the User Control Panel, select Profile, and then enter your city, state/province, and country into the Location field (country minimum). This will help people help you. Example: Wylie, TX, USA. Without knowing what country you are in it's hard to make any recommendations. Thank you.
This kit will work with either battery pack and get you a little over 30mph. It's as reliable as any. I've over volted the heck out of mine and it's still going strong after almost 2 years and 7K miles.
http://www.ebay.com/itm/48V1000W-26-Rear-Wheel-Electric-Bicycle-Motor-Kit-E-Bike-Cycling-Hub-Conversion-/230906858514

 

[CogHog]

The Ping 48 volt is probably a 16s pack which is about 51 volts. It will charge to 57 volts and go to 51 volts using about 12 ah of the pack. You should get 37 mph out of the V3C and it will pull 30 amps out of your pack if you let it even though it will last best at 15 amps draw (15ah pack). I used my LiFe 16s (51v) pack for the first 3000 miles and it's still going strong. Used to charge to 59v but now 57v. Mr. BMC insists to me personally that the 3c is a better choice for efficiency than the 3t. But I like the take off torque power of the 3t and I don't need to go over 30 mph anyway. You can't go wrong by shopping at ebikessf. Just suggest getting the CA with the controller mod. I got 3c's and 3t's sitting here for $460 +SH. Same if not better warranty. And my work in process 2nd bike.