36v 500w vs 52v 1500w

[Tim Goffin]

Sort of wish I went 36v now...more ah less weight, my set up is soooooo heavy...

 

[peter.c]

There is not a lot in it 36v requires more cells to get the same ah capacity
I have three packs 14.5 ah not to heavy 21 ah from jimmy heavy and 27ah triangle very heavy but it is 100 cells I now think two smaller ah packs might be the way to go and turn the pas down

 

[Tim Goffin]

There is not a lot in it 36v requires more cells to get the same ah capacity
I have three packs 14.5 ah not to heavy 21 ah from jimmy heavy and 27ah triangle very heavy but it is 100 cells I now think two smaller ah packs might be the way to go and turn the pas down

I'm with u on that...thinking of getting an emergency 10ah get me home battery... multistart 16000mah must be the lightest option im guessing..

 

[Nealh]

Wh is more important then ah.

A case that holds 50 cells for 36v will hold 52 for 48v.
As long as the cells are exactly the same 48v will have more Wh/range then the 36v one even though the 36v one has a fifth more ah.

 

[Tim Goffin]

Well maybe 52v is the way forward then

 

[Nealh]

52v is 4 more cells are needed over 48v, though would/should fit in same case.
Advantages for using higher voltage using same 3450 GA cells.
36v 5p 10s = 50 cells. 17.25ah / 621wh.
48v 4p 13s = 52 cells. 13.8ah / 662wh, +6.5%.
52v 4p 14s = 56 cells. 13.8ah / 717wh. +15.5%.

 

[Tim Goffin]

52v is 4 more cells are needed over 48v, though would/should fit in same case.
Advantages for using higher voltage using same 3450 GA cells.
36v 5p 10s = 50 cells. 17.25ah / 621wh.
48v 4p 13s = 52 cells. 13.8ah / 662wh.
52v 4p 14s = 56 cells. 13.8ah / 717wh.

Battery dirty talk....loving it...

 

[Tim Goffin]

52v is 4 more cells are needed over 48v, though would/should fit in same case.
Advantages for using higher voltage using same 3450 GA cells.
36v 5p 10s = 50 cells. 17.25ah / 621wh.
48v 4p 13s = 52 cells. 13.8ah / 662wh, +6.5%.
52v 4p 14s = 56 cells. 13.8ah / 717wh. +15.5%.

Can any one tell me what will happen if I connect this setup in picture to a 48v battery?....

 

[wheeliepete]

Nealh is running that kit at 48v, but with a different controller. I think he's quite impressed with it. You would have to check the voltage of the large capacitors inside the controller with the kit to make sure they are rated high enough.

 

[Nealh]

It is a Yose kit.
The controller is KT 15a 36v, if you run it at 48v you will smoke it as the main inrush cap is only 50v rating.
You have to ditch the controller and get a KT dual voltage model, the hub is excellent at 48v in pas 5 at 20a, the other levels are also good and pas1 19/21mph is about my tops with my gearing (48/11) on the flat 28mph.

If you look on Yose power.com they have the same kit in 48v now with 17a KT in 26" rim, not a biggy to relace in to a larger rim if required.

 

[wheeliepete]

Nealh, is the cap in the KT 36/48v controller 63v?

 

[Tim Goffin]

The controller is KT 15a 36v, if you run it at 48v you will smoke it as the main inrush cap is only 50v rating.
You have to ditch the controller and get a KT dual voltage model, the hub is excellent at 48v in pas 5 at 20a, the other levels are also good and pas1 19/21mph is about my tops with my gearing (48/11) on the flat 28mph.

If I could be so rude could you post the KT dual voltage I would require... had a flat tire 2day :-( then when 're setting the wheel I had a whole host of **** go wrong lol...hate the motor wire being to close to my break disk...

 

[Nealh]

Nealh, is the cap in the KT 36/48v controller 63v?

Yes hence it is for 48v, you could and would also be ok with 14s.

 

[Nealh]

I run the dual voltage with 36v on outward journey and then 48v on the home bound journey, controller distinguishes the difference effortlessly.

 

[Nealh]

If I could be so rude could you post the KT dual voltage I would require... had a flat tire 2day :-( then when 're setting the wheel I had a whole host of **** go wrong lol...hate the motor wire being to close to my break disk...

When I got my kit they only listed 36v, but now they list a 48v 350w rear kit so no need to mess about with another controller. The 17a KT will give good poke and if you wanted more amps you could carry out a small shunt mod with a little solder.
If you wanted to use 36v hub with 48v controller, you would need a KT dual controller with Julet connector.

The 36v at 48v is 30% faster then the 48v as the winding speeds are the same.

https://www.yosepower.com/en/product/Hub-Motor-48V350W-26"-Rear-Motor-Bicycle-E-Bike-Hub-Conversion-Kit-Black-DIY-E-bike-LCD-Display-143.html

 

[Tim Goffin]

When I got my kit they only listed 36v, but now they list a 48v 350w rear kit so no need to mess about with another controller. The 17a KT will give good poke and if you wanted more amps you could carry out a small shunt mod with a little solder.
If you wanted to use 36v hub with 48v controller, you would need a KT dual controller with Julet connector.

The 36v at 48v is 30% faster then the 48v as the winding speeds are the same.

Can't see a 48v 350w on their eBay site?

 

[Nealh]

If I could be so rude could you post the KT dual voltage I would require... had a flat tire 2day :-( then when 're setting the wheel I had a whole host of **** go wrong lol...hate the motor wire being to close to my break disk...

This is the I use it has not julets so you need the rest of the kit to go with it pas, lcd , throttle etc as connectors are SM ones.
https://www.aliexpress.com/store/product/36V-48V-500W-Brushless-DC-Sine-Wave-sensor-Controller-ebike-Electric-Bicycle-Hub-Motor-Controller-with/1314442_32759790640.html?spm=2114.12010612.8148356.4.3b3d382fkwX7XC

The julet controllers seem to be oem kit ones supplied to third party sellers.

 

[Tim Goffin]

This is the I use it has not julets so you need the rest of the kit to go with it pas, lcd , throttle etc as connectors are SM ones.
https://www.aliexpress.com/store/product/36V-48V-500W-Brushless-DC-Sine-Wave-sensor-Controller-ebike-Electric-Bicycle-Hub-Motor-Controller-with/1314442_32759790640.html?spm=2114.12010612.8148356.4.3b3d382fkwX7XC

The julet controllers seem to be oem kit ones supplied to third party sellers.

Found the 48v 350w kit on their website but it is messing around, can't seem to be able to select it to buy...just says product not selected....Will give it ago tomoz....5am start for me....

 

[Nealh]

Can't see a 48v 350w on their eBay site?

#55 I posted a link direct to there site, EU warehouse is in Berlin.

 

[Nealh]

Found the 48v 350w kit on their website but it is messing around, can't seem to be able to select it to buy...just says product not selected....Will give it ago tomoz....5am start for me....

Stock is currently 0 so is why you can't order it.