Search found 5 matches

by nicklouse10
13 Mar 2020, 7:13pm
Forum: Electric bikes
Topic: is there such a thing as a small, discreet, lightweight speed controller
Replies: 2
Views: 383

is there such a thing as a small, discreet, lightweight speed controller

I'm trying to build a lightweight carbon bike. I've just taken delivery of a 2000w mid drive motor by Luna Cycles. One of the main reasons I bought it was the claims of the vendor that it weighed in under 3.5KGs! Unfortunately this doesn't include the controller which is a bulky, ugly, heavy unit (1...
by nicklouse10
20 Jan 2020, 3:29pm
Forum: Electric bikes
Topic: Advice needed on cell config for a lightweight 48v pack
Replies: 15
Views: 842

Re: Advice needed on cell config for a lightweight 48v pack

This is the BMS I'd planned to fit.

https://tinyurl.com/twkz9gz

I've not bought a charger yet and would appreciate a recommendation.

I'd like to have three chargers to keep at different locations I visit frequently, so I'd prefer not to choose one that's prohibitively expensive
by nicklouse10
15 Jan 2020, 12:21am
Forum: Electric bikes
Topic: Advice needed on cell config for a lightweight 48v pack
Replies: 15
Views: 842

Re: Advice needed on cell config for a lightweight 48v pack

I decided to go with 23 X Samsung 40T 21700 cells, giving me a 13s 2p 10AH 48V battery
I'll post my progress as I build it.

Now it seems I need to learn about chargers and charging!
by nicklouse10
19 Dec 2019, 9:35pm
Forum: Electric bikes
Topic: Advice needed on cell config for a lightweight 48v pack
Replies: 15
Views: 842

Re: Advice needed on cell config for a lightweight 48v pack

cheers for the responses. I have a spot welder for assembling battery packs but I don't have any experience of it yet. I'm going to be doing as much research as possible before assembly. My commute is short but its up some very steep hills and I have to carry the bike up 2 flights of stairs when I g...
by nicklouse10
18 Dec 2019, 11:08pm
Forum: Electric bikes
Topic: Advice needed on cell config for a lightweight 48v pack
Replies: 15
Views: 842

Advice needed on cell config for a lightweight 48v pack

Hi, I'm building a lightweight ebike using mainly carbon components. My daily commute is less than 3 miles so I don't need a high capacity battery. Weight saving is more important to me. I will be building my own battery using 18650 cells. I was thinking of buying 39 x 3000mah, 3.7V cells, and confi...