Before



Started with a Cannondale Lefty 29er I purchased used off craigslist for $500. New the bike was around $2300!
The kid who owned it didn't keep it very well. I cleaned, degreased and regreased every bearing in the bike that I could to get it feeling like new.
The shock was serviced last year so it's like new.
I upgraded the brakes to Shimano M785, Shimano Ice rotors, 10 speed Shimano shadow+ rear derailleur, Maxxis Hookworm tires.
I took the Cirrus seat-post from my wife's e-bike (came with it for free) since she does not weight enough to benefit from the elastic polymers installed.
After



As for the electric side of things I went with a BBSHD from Luna Cycle for my 73mm BB.
I converted the original 73mm BB30 bottom bracket to a conventional BB using FSA's conversion kit and a homemade press from a large bolt and a couple washers! Took some elbow grease.
42 teeth Luna chainring. Cassette is 34-11 t.
The battery is 52v 24ah from Luna.
I also hooked it up to the batt-man display to keep an eye on my battery/watts.
Between the lefty shock and the Cirrus seatpost/hookworm tires it rides like a dream. No fatigue, cruises over potholes doing 30+ no problem.
For some specs it weighs 51 pounds, max speed of about 35 mph on flat on a fresh charge in an aero tuck with motor only and I put out 1500 watts according to the batt-man.
On a slight downhill I have had it up to 43 mph and I'm sure I could have gotten more.
I have thought about trying a new controller to up my amps to 40-45 and squeeze out a bit more performance but after consideration I have decided not to as I feel gaining a few more mph is not worth it for the added cost, work, less reliability and diminishing returns, and the bike would be less stealthy (sometimes I carry my battery in a backpack)
If I want to go faster I'll just buy the Honda VFR I have had my eye on!
I have many more pics of the build I can post in a separate thread if it would help anyone.



Started with a Cannondale Lefty 29er I purchased used off craigslist for $500. New the bike was around $2300!
The kid who owned it didn't keep it very well. I cleaned, degreased and regreased every bearing in the bike that I could to get it feeling like new.
The shock was serviced last year so it's like new.
I upgraded the brakes to Shimano M785, Shimano Ice rotors, 10 speed Shimano shadow+ rear derailleur, Maxxis Hookworm tires.
I took the Cirrus seat-post from my wife's e-bike (came with it for free) since she does not weight enough to benefit from the elastic polymers installed.
After



As for the electric side of things I went with a BBSHD from Luna Cycle for my 73mm BB.
I converted the original 73mm BB30 bottom bracket to a conventional BB using FSA's conversion kit and a homemade press from a large bolt and a couple washers! Took some elbow grease.
42 teeth Luna chainring. Cassette is 34-11 t.
The battery is 52v 24ah from Luna.
I also hooked it up to the batt-man display to keep an eye on my battery/watts.
Between the lefty shock and the Cirrus seatpost/hookworm tires it rides like a dream. No fatigue, cruises over potholes doing 30+ no problem.
For some specs it weighs 51 pounds, max speed of about 35 mph on flat on a fresh charge in an aero tuck with motor only and I put out 1500 watts according to the batt-man.
On a slight downhill I have had it up to 43 mph and I'm sure I could have gotten more.
I have thought about trying a new controller to up my amps to 40-45 and squeeze out a bit more performance but after consideration I have decided not to as I feel gaining a few more mph is not worth it for the added cost, work, less reliability and diminishing returns, and the bike would be less stealthy (sometimes I carry my battery in a backpack)
If I want to go faster I'll just buy the Honda VFR I have had my eye on!
I have many more pics of the build I can post in a separate thread if it would help anyone.