Bafang rear+ DIY battery+central battery+ DIY Computer

[Memran]

Looking very nice and neat! Not a lot of people use wood/mdf, but it is a very easy material to work with.

How is the low speed torque on this motor @ 36v? Could it handle 30% hills?
I'm running a clyte 408, but it has no grunt for off road riding, and is only useful for cruising on the level.

[spuzzete]

Looking very nice and neat! Not a lot of people use wood/mdf, but it is a very easy material to work with.

How is the low speed torque on this motor @ 36v? Could it handle 30% hills?
I'm running a clyte 408, but it has no grunt for off road riding, and is only useful for cruising on the level.

Thanks!

On steep hills (i don't know the grade) at 36v you need to assist, a 48v or more setup will be better for a 30% incline. Also my controller is limited to 30A, I think 50A would be best for very steep hills.
I don't know if this motor will last a long time though if you put 2-2.5kw in it constantly.

[spuzzete]

An update on the bike.

I am working with Arduino to build a bicycle computer, so far the result is pretty interesting!

Arduino Bicycle Computer

IMG_0306.JPG (83.93 KiB) Viewed 590 times

You can follow the project on my website: http://www.jacopo.tk

[spuzzete]

Here an update on the Arduino-based computer:

Now I can see data on the lcd screen and save the distance and the Ah used in the eeprom, pushing a button I can see the maximum values of some of the data and pushing another button I can erase the eeprom.

Functions:

+Battery voltage
+Battery temperature
+Amps
+Watts
+Ah used (stored in eeprom)
+Speed in Kph
+Distance in Km (stored in eeprom)
+Km left with the current battery.

Little video:

[chisixer6]

good job, I like your wooden box for the batteries instead of the tackle box. don't you need to have the controller exposed to the cool air? otherwise it will probably get very warm in the box.

[spuzzete]

Thank you chisixer6!
The controller is fine even on long rides with the 10S li-ion battery. Now I am running 20S and the controller (I modded it to take up to 100V) gets warm/hot depending on how much power I use. I am building an external support for it but I want it to be safe to prevent people touching wires when I park the bike.

[bobale]

Could you possibly share e-bike computer code with us?

[spuzzete]

I am sorry but the code is not for share.

I believe you are the same person that contacted me on the same day as well on my website and youtube channel?