Max "Legal" eZip

Discussions related to motors other than hub motors.
This includes R/C motors, botttom bracket, roller and geared drives.
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DrkAngel
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Max "Legal" eZip

Post by DrkAngel » Jan 09, 2018 10:28 am

Pimping up my Snow Beast.
Oem is 24V 450w with a 15-16mph top speed.
Regearing, by replacing the 20T motor side freewheel with the 16T provides an enjoyable "legal" ~20mph that appreciates pedal assist.
Adding 25.9V battery pushes the MY1018z motor just past 20mph and the XYD-16 motor right to 20mph.

Revolting to 36V pushes to ~23mph (past legal) and pumps watt output to near legal 750w limit.
Built large 33.3V battery with recycled cells which dropped speed near 20mph and enjoyed great range, but LVC on the upgraded 36V controller kicked in too early, especially in the cold.

Got a supply of 36V HO hoverboard batteries so adapted for Snow Beast use with good torque and excessive speed.

Had to rebuild motor wheel, so decided to fix things "proper".
Latest SB upgrade involved Gearing motor wheel down from 20T to 22T with the 36V upgrade.
Near ideal! With battery partially charged, (for greatly extended life), bike humps right up to 20mph and only drops to 18mph on reasonable hills.

Image

Final perk will be upgrading the 36V 25A to a 36V 35A controller. This will not increase speed but will pump up the motor towards "legal" 750watt output limit and improve acceleration and steeper hill capability nicely.

Snow Beast motor is the sacrificial lamb for testing this set-up. Having survived 6000+ miles and 10 Winters of salt, snow and slush, at worst, will go out fighting!
Last edited by DrkAngel on Jan 14, 2018 8:53 pm, edited 1 time in total.
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markz
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Re: Max "Legal" eZip

Post by markz » Jan 09, 2018 8:42 pm

PFFFFFFFT

Legal Speegal

You think Upstate NY fuzz cares?
maybe they do, NY is funny. fuzz around my parts, dont care at all. tho I did have some evening sidewalk walkers in the dark say "you have a horn on that thing" I didnt say nothing, 2 seconds as the pair went single file, and I was off...zooooom

On your note of
10 Winters of salt
I'm not even done one winter, and my chain is really really rusted!
I rarely pedal.

If I had the mxus 5kw dd rear instead of 3kw, I still wouldnt go fast, just gear it for hill climbin. So literally, and I do mean literally no pedaling.

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DrkAngel
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Re: Max "Legal" eZip

Post by DrkAngel » Jan 13, 2018 10:05 pm

Ordered up a 1/2 x 1/8" Z410 RB "rust buster" chain for motor drive.
Already installed 7spd "China "stainless steel" pedal chain.
A little learning is a dangerous thing;
Drink deep, or taste not the Pierian spring:
There, shallow draughts intoxicate the brain,
And drinking largely, sobers us again.

I enjoy enlightening ... and enlivening the spirit of the innovators.

New & Improved - Acronym Definitions

Index - Homemade Battery Packs - Updated - November 2015

EBike Toolbox - Bargains! $

Endless Sphere Wiki

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