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)
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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?
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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
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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!
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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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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.
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FlightService
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Re: Mid-Drive Build - comments and recommendations welcome

Post by FlightService » Dec 21, 2017 11:42 am

Image

Ride profile of going home with a simulation of the MAC 8T

Thoughts?
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Re: Mid-Drive Build - comments and recommendations welcome

Post by Buk___ » Dec 21, 2017 12:20 pm

FlightService wrote: ↑
Dec 21, 2017 11:42 am
 Image

Ride profile of going home with a simulation of the MAC 8T

Thoughts?
What simulator is that?
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FlightService
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Re: Mid-Drive Build - comments and recommendations welcome

Post by FlightService » Dec 21, 2017 1:28 pm

http://www.ebikes.ca/tools/trip-simulator.html

In the "Input type" header the default is elevation, you can click on it and go to Google Maps. It will upload your elevation and distance profile after you close the window. Really cool.
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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