controllers need Over Voltage protection. This is done with mosfets and depending on which Fets you have will dictate the maximum voltage your controller can receive. Maximum Amps is handled by a Bus Bar on the pcb.

Controllers may also have heat sensors which will trip if the controller reaches 70 C and while that seems high consider we have had Humidex readings of 44 C recently and your e-bike sitting in the sun is baking. You hit the throttle or take a hill and you'll hit 70C. Your motor will shutdown until the controller temperature drops below 70C. I used carry an ice pack.

I know Joshua I spend an excessive amount of time reading stuff at endless sphere, I'm hoping they say 60V+ when I open it. Then I won't even need a new controller

You should see this bike manual. I'm surprised I understand all these bad translations..well almost all. Here's a sample:

"Charging to the battery which is taken off, set battery in a right position to prevent from being broken. Don't place the battery upside down and must not cover anything above charger and battery to avoid overheating."

Ok so that one made sense for the most part. But I think we need Lock to translate this one:

"Inflammables or any other frogs laying under or covering above the charger is forbidden."





-Vic

Well I opened up the controller the few minutes ago. There was one giant capacitor labeled 50V. So too low for a 48V battery. Also no sensor wire for the motor which means it's brushed. So I need a 48V brushed controller. Suggestions? I'm hoping to keep the 1:1 assist

-Vic

I'm hoping to keep the 1:1 assist

Yah... dream on

$60 48V brushed controller here:
http://www.monstersco...

Lock

Here they are shown as LiCo's:


Cells possibly Panasonic:
http://www.panasonic....

IF they are using those Panasonics then 40 of the Panasonics as 10s and 4p yields 36V 9.8kWh and 1.8kg/4lbs excluding case etc.

Panasonic labels `em Li-ions but their Overview sheet shows they are LiCo:
http://www.panasonic....

LocK

Unless Danny made a mistake his battery is made by Samsung. He says so in this thread:

http://ampedbikes.com...

"Inflammables or any other frogs laying under or covering above the charger is forbidden."

Makes sense to me, you wouldn't want your frogs to combust now would you LOL

Replace the word frogs with rags and it makes more sense.

I used to look at Chinese websites and then email the company explaining how if they want to sell to the West this is how they need to alter their site and I do it in a nice way as the Chinese can get easily offended.

An example that stood out in my supposed mind was a manufacturer offering Lithium-ion Battery Packs.

On their Homepage it read something like:

With Our Most Superior Li-ion Battery it offers major explosion over and over that leaves you unable to breath any air and you be most happy.

In the Background it showed a giant Mushroom Cloud via a Nuclear Blast.

Once I stopped laughing I corrected their page for them.

Unless Danny made a mistake his battery is made by Samsung. He says so in this thread:
http://ampedbikes.com...

There ya go. But "Lithium" or "Lithium-ion" always comes in one flavour or another and the Panasonic cells illustrate the sort of energy densities possible with LiCo! The different flavours have diff operating characteristics so EVen if they don't tell ya exactly which the cells are ya can usually tell from the specs about nominal voltage rating, volumetric energy density etc.
LocK

Cobalt is very nasty stuff when it ignites.

ICBM Warheads are lined with Cobalt because it goes from zero to 4K Celsius in a few seconds (been a few decades since I was into nuclear physics so it might be less than 4K but whatever it is the temperature is really up there)

I was sooooooooo happy when Lifepo4 appeared because e-bikers kept trying to use Lithium with Cobalt i.e. Thunder Sky and when those puppies exploded it rattled windows down the street and it was not something you wanted going bang under your ass.

Now we're back to using Li-Co204 and while the explosion part is gone the combustion side remains. Once a Cobalt fire begins there is Nuthin you can do but let it burn and don't breath in the fumes.

I changed the title of this thread because I'm changing things a little. I think we could all have some fun

In the future I'm going to convert my mountain bike to electric as you already know. BUT I want to know what kind of features you yourselves would add if you were building one for yourself. Suggestions could be anything! Well within limits of course. It still have to be electric so no rocket engines, lol.

What kind of features would you like to see? We I have enough saved up I might actually build it with a lot of the suggestions

Only rule is that it has to still look like a normal bicycle. And for the purpose of this we can ignore all current Ontario ebike laws. Although when I do build it. It WILL be within the legal limits. But I want to see what everyone comes up with.

-Vic

Only rule is that it has to still look like a normal bicycle.

Man that's a pretty broad statement right there... are recumbents "normal"? Trikes? Ya had better define your mission statement a bit more. Max range, percent "pedal-assist", winter riding? Cargo capability? Must fit in a TTC bus bike rack? Do ya need to carry it up stairs ever? Ya want folding? Suspension? Commuter or off-road? Hybrid?

I'll bet when you think "normal bike" you have a lot of features already in mind... Better get `em out in the open.

lLok