EBike Toolbox - Bargains! (newest = throttles)

circuit said:
I would be perfectly ok with a quality corded 12V compressor...
Click to expand...
I am reconsidering 12V lighting ... and for many other devices.

Some options for 12V supply
1. A small 3s Lipo or homemade 18650 3s pack.
2. eZip 24V RMB battery pack uses a 3 pin XLR charging port.
Use XLR center pin for 12V. SLR - use center pin as 12V. Li-ion - use center pin for 11.1V (12.6V fully charged.)
3. >>> 12V converters.
36V to 12V 2-3A converters are cheap ~ $2,
Converting to 5V usb power is becoming increasingly advisable!
4. eZip special - convert 2nd RMB pack as Lithium 3s pack for large 12V supply for:
air pump
lighting
power inverter
power tools
Bonus! - rig 12-11.1V) pack with its neg to pos of 1st 24-25.9V pack.
Battery switch position 1 will supply normal 7s 25.9V (normal 20mph - 485w).
Switch position 2 will run batteries in series 10s 37V (TURBO 25mph+ - 695w)
(requires 24-36V capable controller)

Index - not complete ... but good start
 
I've started in a similar direction but I'm tapping ~12V from 4 of the LiFePO4 cells in my battery pack for low load items (alarm).
 
Anybody seen/used this one? Amp hour / Watt meter with Wireless display.



120V 100A Doesn't show Wh, only Ah. $27.10

http://www.ebay.com/itm/DC-120V-100A-Volt-Current-Ah-Power-Combo-Meter-Charge-Discharge-Battery-Monitor-/121635542549?pt=LH_DefaultDomain_0&hash=item1c520b1615
 
alsmith said:
I've started in a similar direction but I'm tapping ~12V from 4 of the LiFePO4 cells in my battery pack for low load items (alarm).
Click to expand...


Tapping Into you packs would create an imbalance issue. You are better off getting a DC/DC converter or building a separate pack.
 
It' a very low discharge so I very much doubt there'll be any issues. I do have separate batteries for heavier draw items such as the Cree lights.
 
opperpanter said:
Anybody seen/used this one? Amp hour / Watt meter with Wireless display.



120V 100A Doesn't show Wh, only Ah. $27.10

http://www.ebay.com/itm/DC-120V-100A-Volt-Current-Ah-Power-Combo-Meter-Charge-Discharge-Battery-Monitor-/121635542549?pt=LH_DefaultDomain_0&hash=item1c520b1615
Click to expand...

I was all set to order one and give it a try.... However, I decided to first find and download a manual for it. Glad I did because there is a requirement to also provide power (different voltage) to the display unit in addition to the shunt/circuit board. NOT MENTIONED ANYWHERE in the seller's post.

The display requires a separate 5v to 24v supply. So to use we would have to get a DC - DC step-down converter or a separate and smaller battery from the main ebike battery.

Not something I want to deal with.
 
What about this meter?

$(KGrHqUOKooFIMqScWtMBSJgdkb2qg~~60_35.JPG


http://www.ebay.com/itm/151464937998?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT

I'm planning to give this one a try. In the following configuration:

$_35.JPG


It is self powered (10v to 90v) and can measure anything up to 120v and 200a.
 
I just spotted a meter on Hobbyking, it measures voltage to 60V, 100A, and a few other things [Turnigy 7 in 1 Mega Meter - Battery Checker/Watt Meter/Servo Tester/Optical Tacho/Temp Gauge/Thrust Calc/Battery Internal Resistance Checker]. What caught my eye was the Internal resistance option. under $40 but the full specs would need to be checked to make sure it'll be ok with the extra power of ebike batteries.

megameter-sub2.jpg


And alower priced meter - same V & A under $20

25703-main.jpg
 
Here's a very nice and simple LCD 12V-48V meter. Not a bad deal at all for about 5 quids on eBay :D

http://www.ebay.com/itm/121672359374?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
 
Found up a nice pair of items.
Together, could make an easy eTrike build.
Ideal item for the Schwinn Meridian Trike.
Apply to non pedal driven rear wheel for assist, better traction and motor supplied deceleration.
9 - 32 gearing provide a stable torquey 10mph.
One for each rear wheel! ... for hills, loads and hefties?

24V 350W Electric Motor W/ Gear 9T Sprocket 24 Volt 350 Watt MY1016Z3
- ≥ $53.95 delivered
See ES article for full specs - Mid-drive Compatible gear reduction motors

24V 350W = 20mph max capability
36V 525w < 25mph
Motor drive sprockets: 9, 11, 13, 15
Motor drive freewheels: 12, 13, 14, 15, 16, 18, 20, 22, 24 +?

Spoke Mount Sprocket (Non- Freewheel) (for 36 spoke wheels)
- ≥ $15.19

Spoke mount (9 hole) sprockets: 28, 31, 32, 36, 38, 40, 41, 44, 48, 56,
Larger sprockets available if you feel capable of drilling-machining.

Figured up a few possible drive ratios - 26" wheels:

24V Unite gear reduction motors:
At 24V
9T - 28T = 11.2 mph
9T - 40T = 8 mph
9T - 56T = 5.6 mph

At 36V
9T - 28T = 16.8 mph
9T - 40T = 12 mph
9T - 56T = 8.4 mph

At 24V
13T - 28T = 16 mph
13T - 40T = 11.5 mph
13T - 56T = 8 mph

At 36V
13T - 28T = 24 mph
13T - 40T = 17.25 mph
13T - 56T = 12 mph

At 24V
18T - 28T = 22.4 mph
18T - 40T = 16mph
18T - 56T = 11.2 mph

At 36V
18T - 28T = 33.6 mph
18T - 40T = 24 mph
18T - 56T = 16.8 mph

Note - relative speeds do not reflect wind resistance at higher speeds
MB requires 350w to sustain 20mph ... 1000w to sustain 30mph. Upright trike requiring notably more w.
Dual motors @ 36V should be ~30mph capable ... but suicidal on a high trike?

Add #415 chain, thumb throttle and mounting hardware ... might cost ≤ $100! - Batteries not included
 
Interesting--it looks like that motor can pull the contacts apart as well as push them together, though I dunno if it would have enough force to pull apart welded contacts, with just the plastic pull/push bracket.
 
Tire bargains
Great price on reasonable quality Kevlar belted tires - price varies but often with "sale" prices

$13.17 w/free shipping on $35 order (11/04/15)
Great Kevlar belted multi purpose tread - Schwinn (Innova)
 
Just ordered 4 at about $14 per tire. They have 20" ones that I bought.
otherDoc
 
10A 12V PSU on ebay. The £9 price includes UK postage, not sure what it would be for you US guys.
They're $114 at Newark Element 14
I've been looking for a while for a charger for a Turnigy LiPo charger at a sensible price, the HobbyKing 105w 7A Compact Power Supply was favourite but has been out of stock for a long time and the shipping charge makes it 2½ times the price.

They are currently being sold on farnells for about £80 so grab yourself a huge saving. Once they've gone they've gone.

Input Voltage AC Max: 264V
Input Voltage AC Min: 90V
Input Voltage VAC: 90V to 264V
No. of Outputs: 1
Output Current Max: 10A
Output Power Max: 120W
Output Voltage Nom.: 12V
Power Supply Output Type: Adjustable, Fixed
Features:

Convection cooled
3" x 5" Footprint
Active PFC
Overvoltage & overcurrent protection
International safety approval
 
Do an eBay search for a Dell DA-2 power supply.
12V 18A = 216w
Often less than $10 delivered.
Dell DA-2
Does require output end plug mod. OEM is 3 output pairs 3+ 3- plus On\Off enable pins.

file.php


Power on is short pin 5 to ground.

I made this adapter cut from 24pin ATX power supply extension adapter. - For LED lighting project
file.php


Stripped wire sheathing from another and modded to 3 length outputs:
cut one to 1 foot;
one at oem 6 feet;
spliced one to 11 feet.

i solder and heatshrink all wire connections.
¼" long heatshrink rings at intervals keeps wire pairs nicely organized.

Designed for years of continuous use.
Seems ... reasonably weather resistant
 
Heat\Cool Thermostat-Control - (12V ≤10A)
Programmable from -50ºC to +110ºC.

Found up a nice budget thermostat control for heating pad or cooling fan.
I ordered LED and dip switch versions. Will post review after received.

- <$3 delivered

the 12V heating pads. - ≥$2.67/pair
 
TheBeastie said:
Got one of these for my ebike to step down from my mains battery pack output to my 5v led front light. $10 USD
http://www.ebay.com/itm/131411613239?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Its all presealed, claims to be Dust-proof/ Waterproof and appears so and its pretty small, (photo is pretty close up) and it has managed to handle my battery packs of 36v and 44v, I have manged to bbq cheaper step down DC converters that claimed to handle these voltages but didn't. If you think you need one of these I demand you buy one and enjoy it (but I have absolutely no gain from you getting one)
Click to expand...
Just an update on this device, I decided to solder one some wires onto my back LED light and feed it into the DC-DC 5volt stepdown module as using batteries was getting unreliable on it.
While testing I decided to test the milliamps draw of this device while plugged into my v48 battery pack, the microamps DVM is connected directly to the battery pack then fed into the DC-DC stepdown module.
With the back LED off the whole thing including the dc-dc stepdown module draws about 0.38ma or 378microamps (μA) according to the meter.
With the back light LED switched on the whole thing was drawing about 1.5ma or 1500 micro-amps according to the meter.
Click on the sides of the google photos to see various outputs the meter shows when the bike light is on or off (also note that I flick between uA and mA modes on the meter)
Also note that I placed an extra led on the bike light battery connectors input to drop voltage input and cause it to draw less power while in operation.
https://photos.google.com/share/AF1QipMa81ns28usAEkMff9xB8lk_GCTTlYuSAQsNbs1OKrXJURMiLRV16XIR6JfnBelCw/photo/AF1QipOHCKtmFM2_uHmahYZG3jiMN5vNQg1DTrcGbIRV?key=YmtjNVNVMlYteF9nS2lHNGF5eWNEczRQZDFVNzJR
 

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58V DC fuses 15A - 150A

58V Female Cartridge Fuse Holder Source???


  • 250VAC Fuses 80-125V? DC Equivalent
  • 30A Slow Blow
  • 40A
  • 50A
  • 60A
  • 70A
  • 75A
  • 80A
  • 100A
  • 125A
  • 150A
    Note:
    250VAC = 80-125V? DC compatibility based on various claims and the ratings of multiple manufacturers with multi AC-DC compatible fuses
    Please test and confirm in safe environment before placing in service

Slow Blow fuses usually recommended for eBikes etc.
Check descriptions for:
Slow
Delay
Slo
Lag
 
48V loud Ebike horn for $3 and free shipping here

High-Quality-12V-Pure-Copper-Coils-General-Iron-font-b-Motorcycle-b-font-Scooter-Waterproof-Electric.jpg
 
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