Hi. This is something i know more than a little about. Allow me to spew..<p>The water resistant ratings are not up to the challenge of "car replacement" or even letting your ebike get rained on. Their ip rating is for puddles, light rain, a quick fast pour every now and then. The display on the handlebars has such an IP rating and really Doesnt belong on the handlebars as-is. Also, there is no point: the display can be put in a triangle bag where it is protected from elements Aand not a distaction. No important info is really shown on the display, except maybe battery.<p>The protocol for water ingress is gaskets and seals which fail and heavy grease that sticks. Instead, ebikes need oil fill ports and thinner lube. I use a rear hub ebike (because i can have a nice crank, pedal at my cadence, far more repairable) and i drilled a hole in the shell to allow sewing machine oil and wd40 to be added without disassembly. This takes water out, cleans the insides and also can fling oil everywhere because i never tapped and plugged the hole but whatever. The electric hub holds sufficent oil, no need to plug really.<p>The spokes NEED to be tensioned right. Loose and too tight apokes brake fast. You need to be able to true your wheels, your bike weighs more and will need the extra attention at least initally. The readybuilt ebike wheels(you know, with the motor in the hub) have sticky nipples and need TLC/lube when first unboxed so they dont stick and become useless(your wheel would be broke if so).<p>disc brakes suck. Like 90% of disc brake users just got roped into a heavier braking system which they dont need. I stop on appalacian hills hauling my 3 year old with rim brakes, and they help keep my bike light. Kool Stop braking pads are not a "poisoned offering" but standard brake pads on new Cannondale, trek, etc WILL deatroy your rim multipules of times faster than Kool Stop pads. Blame money.<p>About the batteries: dont use a battery that is safe up to 18amps of discharge on a 21amp motor controller, you will shorten your battery life or catch fire. Li-ion batteries should never be purchased from someone advertiseing incorrect mah or s-p(ex. 12s3p) specifications,, like on ebay, because its like the seller is saying, "you accept being lied to and not knowing what you are purchasing"<p>LiFe batteries are more heavy but last longer and can discharge well.<p>If you live in a hilly area, you pull a trailer, are older then a ebike is a decent idea. It is better to be a fast cyclist and a good bicycle handler than just have a good ebike because the motors often give you 500-1000watts of power and if you can generate 500-800 watts yourself then you have quick transport. Its in bad taste to only use the motor.<p>Go with a 160-165mm crank so you are less likely to hurt knees from jerky/tourqey efforts, they also spin faster cademces which is better because ecyclists pedal slower than non ebike<p>When something breaks on your bike replace it with something more resiliant, otherwise keep the lowcost parts because cheap stems, brake bosses, seatposts even are worth keeping provided they work for you.