Basically I need to be realistic.
I ordered enough LIFEPO4 to build a large 60V pack 16S - 5P. I ordered five boxes.
Basically almost all my bikes can do 36V. Also 70% or more of the time I am doing < 20 mph.
Then take into consideration the weight of LTOs and the space they take up. I would be better off running the LTOs at 36V or 15S but will need 6 more to make two 15S packs or can just do like I said and build two 9S and a 6S and then can run 36 , 48 or 60V. 15S - LTO. 18S LTO or 24S LTO.
when I need 60V for a motor and am running 15S or 18S LTOs for the second motor on an e bike I just hook up the LIFEPO4s . I could run the 1,000W hub motor on the back of the 26" dual suspension with LIFEPO4 and run LTOs at 15S or 18S for the 36V - 1,000W chain drive on the front.
The same goes for the Currie. but would not want 60V on the back as the gear reduction motor is rated at 36V so could run both motors off 15S LTOs or run the rear 36V motor at 18S LTO and hook up my 10S lithium ion packs to the Bafang up front.
The 1,800W brushless motor runs great at 36V. It has all kinds of power and hill climbing ability. Great acceleration but tops out at 20 to 25 mph I think. It starts shaking > 20 mph so dont run it as fast as it will go. The back wheel needs truing.
Also the Giant Roam which has dual 36V e bikeling motors could run 15S - LTOs.
The 20" Turbo runs at 36 or 48V. I have been running it at 36V, most of the time I had it but could go with 18S LTO for 44V.
That is why I want two 9S BMSs and a 6S BMS for the LTOs. I can run at 15S , 18S or 24S. I do not need 21S as I will have the big LIFEPO4 pack.
Now I just need to find the BMSs. I doubt I can even charge them without a BMS with a LiPo charger.
https://prnt.sc/11994cw
https://en.aliradar.com/item/4000036954835-50a-bms-5s-12v-6s-14.4v-lto-battery-bms-4s-7s-8s-9s-10s-lithium-titanium-battery-protection-board-lto-50a-bms-balance-pcb-bms
Looks good but do not see 6S.
I need two 9S - 50 amp BMSs and one 6S - 50 amp BMS.
DA, likes the power I see as talks about 14S batteries and higher. That's great but you all do realize I can build a 40+ mph bike very easily and cheap with those 36V - 1,000W unite motors like what is on the front of the 26" dual suspension.
One on the front and one on the rear is 2,000 watts total at only 36V. Now lets run 18S LTOs for 48 full to 45V empty.
That would give me 1,000W * 36 = 27.7W * 48 = 1,329W to 1,218W so we will average it out and round it all out to 2,400W total and 42 mph gearing. :lol:
The only thing stopping me is I have not converted from chain to belt drive yet. The motors if still available are cheap. It was 60 bucks for the 36V - 1,000W unite motor and the 36V 1,000W controller was less than $30 I think.
If I can convert the one on the front to belt and hook uo a 16S - 5P LIFEPO4 battery to the rear hub motor and 18S - LTO or 45V to that 36V - 1,000W brush motor I should get at least 35 mph maybe more but not going to do it unless I can make the front a bely drive for safety reasons. If that chain comes off and wraps around the spokes it can flip the bike and at 35 mph that is not even close to being good.
Thanks.
LC. out.