Mid-Drive Build - comments and recommendations welcome

Discussions related to motors other than hub motors.
This includes R/C motors, botttom bracket, roller and geared drives.
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FlightService
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Re: Mid-Drive Build - comments and recommendations welcome

Post by FlightService » Dec 05, 2017 9:09 pm

At 250lbs I am thinking 15S4P but shallow charge them to 4.05 for a 60V 12.6 aH with the ability of a 120amp MAX rated discharge! NCR20700A cells from a Bosch/Dewalt packs.
Engineer: (n) en·gi·neer \ˌen-jə-ˈnir\ -Someone who does precision guesswork based on unreliable data provided by those of questionable knowledge. (See also: wizard, magician, miracle worker)

Buk___
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Re: Mid-Drive Build - comments and recommendations welcome

Post by Buk___ » Dec 06, 2017 5:28 am

markz wrote:
Dec 04, 2017 9:07 pm

What I notice is for every 62V 6Ah 10S4P brick ...
"62V" and "10S" does not seem to equate?

markz
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Re: Mid-Drive Build - comments and recommendations welcome

Post by markz » Dec 06, 2017 4:04 pm

I do not charge to 4.20V/cell, but I charge the entire pack to 62 instead of 63

Buk___
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Re: Mid-Drive Build - comments and recommendations welcome

Post by Buk___ » Dec 06, 2017 4:15 pm

markz wrote:
Dec 06, 2017 4:04 pm
I do not charge to 4.20V/cell, but I charge the entire pack to 62 instead of 63
Hm. 62V / 10S = 6.2/cell? Special cells!

markz
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Re: Mid-Drive Build - comments and recommendations welcome

Post by markz » Dec 06, 2017 4:19 pm

Oh hehehehehe yeah 15S my bad
:oops:
brain fart

I am in between reconfiguring my packs from 15S to 10S to get more capacity (Ah).

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FlightService
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Joined: Jun 27, 2017 5:26 am
Location: Washington D.C. Metro area

Re: Mid-Drive Build - comments and recommendations welcome

Post by FlightService » Dec 07, 2017 10:48 am

maybe I missed it but what controller are you using? Going from a 60V to a 40V pack seems like you would loose alot of speed.
Engineer: (n) en·gi·neer \ˌen-jə-ˈnir\ -Someone who does precision guesswork based on unreliable data provided by those of questionable knowledge. (See also: wizard, magician, miracle worker)

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