Andrew's Electrocycle

Post up a thread for your EV. Progress pics, description and assorted alliteration
Post Reply
User avatar
Electrocycle
Senior Member
Posts: 985
Joined: Sun, 19 Oct 2008, 20:23
Real Name: Andrew
Location: Sydney
MSN: dumhed@dumhed.com
Contact:

Andrew's Electrocycle

Post by Electrocycle » Mon, 20 Oct 2008, 00:55

Hi!

I built this bike a while back, but didn't realise there was an AEVA forum until recently!

Specs:

1987 Kawasaki GPX250 donor bike
Mars "brushless etek" motor
Sevcon Millipak PMAC controller
6 x 12v 18Ah AGM SLA batteries

Top speed: 70km/h
Range: about 15km (which is plenty for its intended use and cost)

I built it as a modular system, requiring no mods to the frame, fairing, or wiring - so in theory it could be a bolt in kit for the GPX frame.


It has a page here: http://www.evalbum.com/1492

And there's a thread on the buildup here: http://www.circuitclub.com.au/forum/viewtopic.php?t=381

The other day I made a quick video too: http://au.youtube.com/watch?v=rammgAKLB6U
Last edited by Electrocycle on Sun, 19 Oct 2008, 13:56, edited 1 time in total.
The Engine Whisperer - fixer of things

Striker
Groupie
Posts: 207
Joined: Sat, 28 Jun 2008, 20:03
Real Name: Striker
Location: Sydney
MSN: passport2@evilhouse.net
Contact:

Andrew's Electrocycle

Post by Striker » Mon, 20 Oct 2008, 01:03

Welcome to the AEVA. We'd love to see you (and your bike) at our meetings, too.

Just out of interest, how difficult do you think it would be to build a bike with a range of around 120 kilometres?
Was there much room left for batteries after you were done?

--Striker.
"Remember, remember the eleventh of September,
the government treason and plot.
I know of no reason why the government treason
should ever be forgot."

User avatar
Electrocycle
Senior Member
Posts: 985
Joined: Sun, 19 Oct 2008, 20:23
Real Name: Andrew
Location: Sydney
MSN: dumhed@dumhed.com
Contact:

Andrew's Electrocycle

Post by Electrocycle » Mon, 20 Oct 2008, 01:26

thanks :)
I've been trying to get to the meetings for ages, but I seem to have something else on every time!

There's heaps more room for batteries in my bike, especially if you're using the smaller lithium packs.

I don't think it'd be difficult at all to build a 120km range bike, but the batteries won't be cheap!

I should be able to get 50-60km range if I replaced the current batteries with a lithium pack of a similar physical size.
The Engine Whisperer - fixer of things

User avatar
Richo
Senior Member
Posts: 3626
Joined: Mon, 16 Jun 2008, 00:19
Real Name: Richard
Location: Perth, WA

Andrew's Electrocycle

Post by Richo » Mon, 20 Oct 2008, 04:33

cool vid Image

Have you set it up to get regen?
Help prevent road rage - get outta my way! Blasphemy is a swear word. Magnetic North is a south Pole.

User avatar
Electrocycle
Senior Member
Posts: 985
Joined: Sun, 19 Oct 2008, 20:23
Real Name: Andrew
Location: Sydney
MSN: dumhed@dumhed.com
Contact:

Andrew's Electrocycle

Post by Electrocycle » Mon, 20 Oct 2008, 16:32

the controller doesn't do proper regen, but it works as a 3 phase rectifier on overrun, and I get about 10amps back into the batteries if I back off at 60km/h.
I've designed a separate variable regen addon for it but have been working on getting the performance up before I add more bits to it :)
The Engine Whisperer - fixer of things

User avatar
Electrocycle
Senior Member
Posts: 985
Joined: Sun, 19 Oct 2008, 20:23
Real Name: Andrew
Location: Sydney
MSN: dumhed@dumhed.com
Contact:

Andrew's Electrocycle

Post by Electrocycle » Thu, 06 Nov 2008, 14:41

Ok, the bike is about to get some serious upgrades :)

72 volts of TS batteries are on the way, and I have an ADC 6.7" motor to try out.
I plan to run it through the bike's original gearbox so I won't ever have to load it up too hard, and I'll have a much wider usable speed range.
Of course this all basically doubles the cost of the bike, but with around 100km range and better performance it'll become a very usable EV!
The Engine Whisperer - fixer of things

User avatar
EV2Go
Senior Member
Posts: 2059
Joined: Wed, 16 Jul 2008, 00:21
Real Name: Paul
Location: Brisbane 1963

Andrew's Electrocycle

Post by EV2Go » Thu, 06 Nov 2008, 21:07

I would be keen to hear how that goes Andrew as it would be a good bench mark config for EV cycles.

User avatar
Electrocycle
Senior Member
Posts: 985
Joined: Sun, 19 Oct 2008, 20:23
Real Name: Andrew
Location: Sydney
MSN: dumhed@dumhed.com
Contact:

Andrew's Electrocycle

Post by Electrocycle » Fri, 07 Nov 2008, 00:14

yep, I've gone more for off the shelf bits too (motor and controller) so that once I have it working well it can easily be replicated - rather than doing my own controller or using an obscure motor :)
The Engine Whisperer - fixer of things

antiscab
Senior Member
Posts: 2399
Joined: Mon, 26 Nov 2007, 05:39
Real Name: Matthew Lacey
Location: Perth, WA

Andrew's Electrocycle

Post by antiscab » Fri, 07 Nov 2008, 01:35

sounds excellent.
let us know how it goes

Matt
Matt
2017 Renault zoe - 25'000km
2007 vectrix - 156'000km
1998 prius - needs Batt
1999 Prius - needs batt
2000 prius - has 200 x headway 38120 cells

htial
Groupie
Posts: 135
Joined: Fri, 21 Nov 2008, 02:44
Real Name: Laith
Location: Melbourne
Contact:

Andrew's Electrocycle

Post by htial » Fri, 28 Nov 2008, 21:22

Looks good...   ...Sounds good too...   ...My brother's GF said it sounds like an RC car...

I've always had a feeling that two wheel EVs will take off faster than four wheel...   ...But then it also comes back down to range again...

User avatar
Electrocycle
Senior Member
Posts: 985
Joined: Sun, 19 Oct 2008, 20:23
Real Name: Andrew
Location: Sydney
MSN: dumhed@dumhed.com
Contact:

Andrew's Electrocycle

Post by Electrocycle » Sat, 29 Nov 2008, 03:54

yeah range is a problem, but a lot of people mainly do very short trips, and a motorbike is a good second (or third) vehicle because it's easy to store - so it's a good candidate for electric power.
There's also the price factor. You can build an electric motorbike at a price low enough that people can justify spending on a limited range, specific purpose vehicle.

All we need is that critical mass of EVs on the road to get the interest in further development and mass production, and I think they'll take off.
The Engine Whisperer - fixer of things

User avatar
Electrocycle
Senior Member
Posts: 985
Joined: Sun, 19 Oct 2008, 20:23
Real Name: Andrew
Location: Sydney
MSN: dumhed@dumhed.com
Contact:

Andrew's Electrocycle

Post by Electrocycle » Tue, 27 Jan 2009, 18:27

The Engine Whisperer - fixer of things

User avatar
Johny
Senior Member
Posts: 3729
Joined: Mon, 23 Jun 2008, 16:26
Real Name: John Wright
Location: Melbourne
Contact:

Andrew's Electrocycle

Post by Johny » Tue, 27 Jan 2009, 18:47

Way to go Andrew! Who cares what time.

peterkneale
Noobie
Posts: 5
Joined: Sun, 18 Jan 2009, 05:29

Andrew's Electrocycle

Post by peterkneale » Wed, 11 Feb 2009, 03:57

Awsome - Congratulations. Im still looking for a decent rolling chassis myself although i have got my new CB250 for some practice until i can go electric :)

fletchlives76
Noobie
Posts: 11
Joined: Sun, 22 Feb 2009, 05:38
Real Name: joseph
Location: melbourne
Contact:

Andrew's Electrocycle

Post by fletchlives76 » Thu, 26 Feb 2009, 04:24


excellent project.





User avatar
carnut1100
Groupie
Posts: 334
Joined: Tue, 24 Feb 2009, 16:39
Real Name: Greg Milligan
Location: Brisbane
Contact:

Andrew's Electrocycle

Post by carnut1100 » Fri, 04 Mar 2011, 04:27

I like this concept.
I really want an EV, but the cost of doing a car that will have the range and speed I need is prohibitive on my current wages with the mortgage and all...
If one had the bike already, how cheaply could you build something like this?
I'd need to go for the lithium setup as the original LA range of 15km would barely get me to work and I can't charge there...
I'd really need a 50km range to be practical and a top speed of 80+

User avatar
Electrocycle
Senior Member
Posts: 985
Joined: Sun, 19 Oct 2008, 20:23
Real Name: Andrew
Location: Sydney
MSN: dumhed@dumhed.com
Contact:

Andrew's Electrocycle

Post by Electrocycle » Fri, 04 Mar 2011, 12:45

Once you go to 50km range and 80km/h top speed things get a bit more expensive, but it's easier now than it was when I built this one.

If you can do all the work yourself you should be able to do it for under $5k

It would be possible to do a 250 size bike with lithiums, or a larger bike with lead acid (but 50km range is still pushing it)

A Mars brushed or brushless motor and Kelly controller is probably the cheapest option. (Etek-RT or Double stack brushless)
Even the original Mars brushless motor should be ok to cruise at 80 if you have at least a 72v supply.

If you used a Kawasaki GPX250 or ZZR250 frame the Mars motor fits really well :) The only difficulty is that the battery frame needs to be structural because the engine was originally a stressed member.
Last edited by Electrocycle on Fri, 04 Mar 2011, 01:45, edited 1 time in total.
The Engine Whisperer - fixer of things

User avatar
carnut1100
Groupie
Posts: 334
Joined: Tue, 24 Feb 2009, 16:39
Real Name: Greg Milligan
Location: Brisbane
Contact:

Andrew's Electrocycle

Post by carnut1100 » Sun, 06 Mar 2011, 23:29

Thanks for that.
If I end up doing something like this the 80 kmh speed would be pretty mandatory, as the entire area around my place is 80 kmh speed limit for 15 kms in any direction all rural roads.
50km range is pretty much the minimum too if I wanted to ride it into town and not go near full discharge.

Would that mars motor need to run through the bike's gearbox, or be direct drive by chain?

User avatar
Electrocycle
Senior Member
Posts: 985
Joined: Sun, 19 Oct 2008, 20:23
Real Name: Andrew
Location: Sydney
MSN: dumhed@dumhed.com
Contact:

Andrew's Electrocycle

Post by Electrocycle » Tue, 08 Mar 2011, 03:29

Direct drive is fine as long as you have 72v or so to run the motor (to get decent rpm out of it for top speed without the gearing being too tall)
The Engine Whisperer - fixer of things

damnedfish
Noobie
Posts: 5
Joined: Fri, 21 Sep 2012, 22:12
Real Name: Nick Cowan
Location: Hobart Tasmania
Contact:

Andrew's Electrocycle

Post by damnedfish » Fri, 15 Feb 2013, 16:18

Hi Andrew,

Is there any progress with this bike? I am interested in your mention of using a gearbox.
I am pondering doing a motorcycle conversion, around 72v-ish.
Just doing research at the moment. There seem to be plenty of fence sitters, for-, and against- gearbox's

Thanks for your time.

Damnedfish

User avatar
Richo
Senior Member
Posts: 3626
Joined: Mon, 16 Jun 2008, 00:19
Real Name: Richard
Location: Perth, WA

Andrew's Electrocycle

Post by Richo » Sat, 16 Feb 2013, 00:24

This bike was finished before he started this thread.

You shouldn't need a gearbox unless your motor is too small.
Help prevent road rage - get outta my way! Blasphemy is a swear word. Magnetic North is a south Pole.

damnedfish
Noobie
Posts: 5
Joined: Fri, 21 Sep 2012, 22:12
Real Name: Nick Cowan
Location: Hobart Tasmania
Contact:

Andrew's Electrocycle

Post by damnedfish » Sat, 16 Feb 2013, 03:28

I quite like the idea of maximizing battery life, and efficiencies by having a low gear, 0-60/70km/h. Then a high speed for the top end, and highway cruising.
Which means that if properly designed I can make it cheap (to get on the road sooner, then swap out 0-60 ratios, in place of gearbox, and different ratios.
I haven't done the math, but thinking of using a motor 5kW-8kW less than original bike's maximum power (To account for ICE losses).

Damnedfish

Post Reply