[QUOTE=2old;20473927]You need to assess your requirements as to speed and distance as well as what weight bike you can wrestle into your apartment (if you reside upstairs).
R. Thanks for replying 2old. Only speed requirement is to go as fast as is reasonable given the circumstances. I have an elevator in my building so weight is not much of a concern.
IMO, if it's aluminum, I wouldn't "stretch" the rear triangle.
R. Not sure what you mean by "stretching" the rear triangle? Wouldn't know how to do that even if you could "stretch" aluminum?
If DW responds, he'll mention similar (probably less expensive) kits from ebikeling and others have had success with superpedestrian, Hill Topper, Leeds and others; many are well below $1000 for the complete kit.
R. I realize there are a lot of cheaper kits out there. But they don't have the high wattage and 52-72V systems and speed and distance on those low buck conversion kits is very limited. A decent 52v battery alone can cost close to $1,000.00 if you want more speed and distance.
If you're going to spend in the neighborhood of $2000, I would look at bikes from Specialized, Trek and/or other major companies and wait for a sale or new model year. These probably will be mid-drives, but satisfactory for your needs.
R. These major companies have nice looking mid-drive e-bikes, but the ones I've seen have lower wattage motors and their batteries are of limited voltage to get the speeds and distance you could get from a Luna BBSHD 1000 Watt motor and 52v battery. And their prices are ridiculously high, even if it was a year end sale. Example: The 2018 Turbo Vado 6.0 with a 250 Watt motor, but cost $5,000.00?