Recommend a E-conversion KIt 700c

[PimpMan]

My bicycle has 700c x 32 rims and 8 speeds about 40 pounds + me 200 pounds.

I tried to use it for food delivery and quickly realized i need some help going up the hills when working 8 hours a day.

Not sure how practical it will be for my task to use e-conversion versus scooter, because of extra weight i carry when battery is dead?.

• Idealy aiming at around $150 kit + $150 battery
• Light weight low geared hub
• Interested in how far it can take me on one charge than a top speed or acceleration, need only assist so any low power motor is fine.
• Battery that can be swapped - i plan to have spare battery charging at home and ready to be installed quickly when needed

 

[Benjahmin]

Hi and welcome.
Nice looking bike. It is a bit on the heavy side to begin with and a kit, obviously, will add to that. You're not particularly heavy but you say you want to use it for deliveries, so overall weight would be approx 255pounds plus your delivery. I would say you need a motor with some grunt for the hills. A Bafang BPM hub would fit the bill, or an Ezee. These are large diameter geared hubs noted for their hill climbing. I would go hub rather than crank drive (they are big in Europe) for mechanical simplicity and reliability.

However your costing projection is hopelessly unrealistic, unless things are very different in the states. You may get a motor for that but the controller, display, pas etc are going to be extra. Definitely do not try to skimp on the battery, it will only disappoint. Cheap batteries use cheap cells whose current delivery is poor, so they suffer from voltage sag when you demand the most power, on hills. I would be looking at fitting the battery into that lovely big frame triangle, either a bottle/dolphin type or get one built for a frame bag of your choice. A bag could also house your controller and excess wiring making for a tidy conversion, leaving your racks free for your load.
You've got me going now, I wish I was doing this conversion

Coming back to cost, I think you need to be thinking more in the area of $7-800. Perhaps some of the American members will be along and shoot me down on that on. I'm sure you'll get some supplier specific info shortly.
Good luck.

 

[anotherkiwi]

You are in LA good news, Lunacycle is in LA https://lunacycle.com/

 

[Deleted member 4366]

It's just about feasible to do what you want if you get a cheap 36v kit and battery from Ebay or Aliexpress. Get one of the smaller 250w or 350w geared motor, not one of the big direct drive ones, otherwise you'll need a much bigger and more expensive battery. If you pedal all the time, you'll get about 30 miles per 10 amp hours (360Wh) of battery. You can get a 10Ah battery for $150.

 

[PimpMan]

You are in LA good news, Lunacycle is in LA https://lunacycle.com/

That place is way off my price range, but i found this one for $150

 

[anotherkiwi]

I tried to use it for food delivery and quickly realized i need some help going up the hills when working 8 hours a day.

I thought you were looking for a kit for work? They make some of the best batteries around for instance...

 

[Benjahmin]

As I said you can get batteries for $150 but the cells will probably be a no name generic copy of dubious quality. The stated capacity (Ah) will be derived from testing at a very low current draw. When used in a bike drawing much higher current the capacity will be much lower, giving a lower daily useful capacity.
Secondly, because of dubious cell quality, the overall life of the battery will be shorter.
Let's see if D8veh comes back with a link. He's the man, he's probably bought them all at some time.

 

[Deleted member 4366]

That place is way off my price range, but i found this one for $150

No link!