Project Electric (Push) Bike - Now With Video

[BillyJ]

Ahhh but the 2 PSU's must have common ground to work together.
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Had: '06 CBR125R + '01 GSF600 + '07 SPRINT ST 1050 + '80 CB250 RSA + '93 Ducati 900SS
Have: '13 GSXR-1000 + '01 CB500S
"The aryan confuser"

[Aff]

[Fladdem]

Generic post to obtain updates.
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Current:1991 Honda MT50 (Soon to be a H100/MTX/MT5 hybrid), 1976 Honda Cub C70, 2005 Honda Varadero 125, 1993 Yamaha TTR250 Open Enduro , 2010 Road Legal Stomp YX140, 1994 Honda CRM 250 MK III, 1999 Cagiva Mito 125, 1992 Honda CB400 Super Four, Stomp T4 230, 1984 Honda H100s, 2009 Sym XS125K
Past:2003 Aprilia RS125, 1982 Kawasaki GPZ550(FREE BIKE!)
I'm having more fun than a well-oiled midget.

[Aff]

Just done a bit of Googling, and yes it appears that I will have to leave the mains earth on the second PSU unattached to avoid a short.

This means that I will also have to isolate the cases. Some seem to recommend having a small neon light connected to the 2 cases to warn you if the cases become live.
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Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
Electric Bike Project

[BillyJ]

[Aff]

[BillyJ]

[Aff]

[Aff]

OK, some updates.

Got the second battery finished:

https://i1135.photobucket.com/albums/m637/Biles/EBike/IMG_0405_zps266478fa.jpg

All the balance leads seem to be working correctly:

https://i1135.photobucket.com/albums/m637/Biles/EBike/IMG_0406_zps21c50665.jpg

An isolator for the battery turned up:

https://i1135.photobucket.com/albums/m637/Biles/EBike/IMG_0404_zpse9a204cc.jpg

And yesterday this arrived.

https://i1135.photobucket.com/albums/m637/Biles/EBike/IMG_0403_zps90aed412.jpg

However the Chinese mm seems to be about twice ours.

The hub is much wider than I was expecting. I wont be able to run a cassette at the back and will have to have a single speed freewheel.

I will try and get a good range up front and see if a single speed chain tensioner can handle the chain movement.

Other than the size problem, the wheel looks very good quality. It is well laced with thick gauge spokes and a good solid looking rim.

It weighs in at just under 9kg.
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Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
Electric Bike Project

[Pol Anorl]

I see imminent failure unless motor is badass or you run some odd gearing system..

rear wheel weighs 9kg bike weight 12kg + battery weight-- single cell = 4kg + rider guess 76kg

101kg not including any extras.

if it moves at a speed worthy of using ill eat my hat.
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GOOD GAME BODYGUARD: https://i.imgur.com/8WePGgf.jpg
20:30:37 Pyro.: I don't sort of like men, I take every advantage to choke on dick.
Jewlio Iglesias: You live in Liverpool - Chances are, the front door has already been kicked off the hinges

[Aff]

[Ste]

My rc car has 30 volts, laptop batteries are not going to be enough.

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[Pete.]

[Aff]

OK started sorting out the PSU wiring.

https://i1135.photobucket.com/albums/m637/Biles/EBike/IMG_0411_zps9cf896bf.jpg

Took a fair amount of faffing to figure out what combination of wires I needed to connect to make it turn on.
Including making this monstrosity.

https://i1135.photobucket.com/albums/m637/Biles/EBike/IMG_0418_zps51ee2f10.jpg

I didn't have any power resistors so made this 30 ohm 24W thing, worked pretty well, but turned out not to be needed. These power supplies didn't need a load on on eof the rails to start, they needed to following:

The thin orange wire (sense) connected to the orange 3.3V rail.

https://i1135.photobucket.com/albums/m637/Biles/EBike/IMG_0412_zps60b33bd9.jpg

Connect the Brown ("Power Good") wire to Ground:

https://i1135.photobucket.com/albums/m637/Biles/EBike/IMG_0414_zpse57ede6a.jpg

And a switch for the Green (Soft Power) to Ground.

https://i1135.photobucket.com/albums/m637/Biles/EBike/IMG_0413_zps95d3419b.jpg

The I just grouped all the 12V wires and the remaining Ground wires.

https://i1135.photobucket.com/albums/m637/Biles/EBike/IMG_0415_zps90d1c8a1.jpg

Seems to be working fine.

I also changed all of my connectors over to Anderson Powerpoles. I really like them, they can be configured however you want with the little tabs on the side and they are neither male or female, I suppose you could call them asexual connectors? Makes them really easy to use, will definitely be using them in the future.


https://i1135.photobucket.com/albums/m637/Biles/EBike/IMG_0417_zps69257f9e.jpg

https://i1135.photobucket.com/albums/m637/Biles/EBike/IMG_0416_zpsf82748a7.jpg

I also had to strip down both the batteries because they each had a dead cell. When a Li Ion cell dies it basically turns into a resistor, which all the other cells in parallel with it discharge though. This is usually why you see things like rechargeable drills and laptop batteries suddenly die, it is likely that all but 1 of the cells are fine, but they are just discharging through that 1 dead cell.

I'm not really sure of the best way to find them, I couldn't find any obvious differences using a multimeter, so in the end I stripped the batteries and charged all the suspect sells individually, I then put them on top of a fan to make them nice and cool, then left them on the table for half an hour.

I could then tell which ones were dead because they became warm (discharging itself through the internal short) whilst the others stayed cold.
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Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
Electric Bike Project

[LongJohn22]

Congratulations on a most interesting project, watching this with interest.

[Ste]

OP has died a fiery death yet?

[Aff]

[Ste]

Excellent news, will be interested to hear how the test ride goes.

[bladerunner]

Looking forward to the gps recorded top speed of the maiden run!
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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's

[Aff]

Didn't get to test it today unfortunately.

The throttle they sent me has a smashed chip, so no way of fixing it or running the motor.

A new one is in the post but wont be here till Thursday.

Unfortunately I probably wont make much progress for the next few weeks as I'm away for work.
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Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
Electric Bike Project

[dydey90]

Should have used an Agni motor, like they do for the TT Zero

...Although they seemed to have some problems.

https://fayazkadir.files.wordpress.com/2009/11/mavizen_agni_95r3.gif
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This post is probably not serious and shouldn't be taken literally.
Past: CBR125,ER6f NINJA 650, ZZR600 Current: VFR750

[Aff]

[dydey90]

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This post is probably not serious and shouldn't be taken literally.
Past: CBR125,ER6f NINJA 650, ZZR600 Current: VFR750

[JackDaniels]

I looked into these
https://www.ebay.co.uk/itm/Motorised-Bicycle-Cycle-Petrol-Gas-Engine-Motor-Kit-80cc-2-Stroke-Pedal-Start-/191024991099?pt=UK_Motorcycle_Parts&hash=item2c79fa0b7b
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THEORY TEST - PASSED! - 02-08-11 CBT Passed - 09-08-10 MOD 1 - 09-08-2011 - MOD 2 - 28-09-2011
2006 Yamaha JOGRR>2010 Yamaha Ybr>1995 Honda CB400 Superfour >2005 Honda hornet>1999 Suzuki Bandit 1200 > 2002 BMW R1150GS > 2013 Tiger Sport 1050 > 2007 GSXR 1000 > 2005 GS500E