Ckas electric road bike

Post up a thread for your EV. Progress pics, description and assorted alliteration
Post Reply
ckas
Groupie
Posts: 45
Joined: Sat, 29 Sep 2007, 18:06
Location: Australia

Ckas electric road bike

Post by ckas » Sat, 01 Aug 2009, 22:07

Nearly finished so I thought Id better post it up here again.

Suzuki GN250

20 thundersky 90ah batteries
Perm 132 motor
Axe 7245 controller
Specialty Rod Dilkes Battery management system

Expected top speed 100kmh
Expected range is still a mystery but the target is 100km on a full charge.

ckas
Groupie
Posts: 45
Joined: Sat, 29 Sep 2007, 18:06
Location: Australia

Ckas electric road bike

Post by ckas » Sat, 01 Aug 2009, 22:08

Test driving later this week.

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

Ckas electric road bike

Post by Electrocycle » Sun, 02 Aug 2009, 00:19

sounds good!
The Engine Whisperer - fixer of things

User avatar
acmotor
Senior Member
Posts: 3595
Joined: Thu, 26 Apr 2007, 03:30
Real Name: Tuarn
Location: Perth,Australia

Ckas electric road bike

Post by acmotor » Sun, 02 Aug 2009, 03:35

Great news Chris ! Image

You should run a poll on the best estimate of range !

Lets see... 20 x 90Ah 3.2V = 5760Wh nominal. I'd go for 55Wh/km at 60kmph so 104.73km range at 60kmph continuous.
With regen from DC PM and city driving it could go to 119.27km Image

BTW, what is the sprocket ratio and drive tyre diameter ?
Will the PERM132 RPM reach 100kmph under load with <64V on it ?

Are we to be treated to some pics ?   Image
iMiEV MY12     105,131km in pure Electric and loving it !

User avatar
Thalass
Senior Member
Posts: 741
Joined: Sun, 12 Aug 2007, 07:29
Real Name: Ben Rypstra
Location: Perth, WA, AU

Ckas electric road bike

Post by Thalass » Tue, 04 Aug 2009, 07:58

Any photos? Sounds like a great conversion.
I'll drive an electric vehicle one day.

antiscab
Senior Member
Posts: 2446
Joined: Mon, 26 Nov 2007, 05:39
Real Name: Matthew Lacey
Location: Perth, WA

Ckas electric road bike

Post by antiscab » Tue, 04 Aug 2009, 08:53

acmotor wrote: You should run a poll on the best estimate of range !


my take is:
3.2vpc under <0.6C load for new cells
80% of 90AH is 72AH
:. 4608 Wh

55Wh/km @ 70kmh (49% more than what my emax got at the same speed)
= 83km.
+ 1% average regen (average from emax, most every was 3% by Ah returned to battery) = 84.6km

if using full capacity of battery (shouldnt really ever do this) 105km.

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

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

Ckas electric road bike

Post by Electrocycle » Tue, 04 Aug 2009, 13:00

The Alltrax controller doesn't do regen unfortunately.

On the subject of regen on bikes, do you think 1% is likely to be normal for most bikes?
On the EPX I didn't have proper regen (even with the AC motor) because I was running in torque mode and not speed.
It could push around 10A back into the batteries when backing off at 60km/h, with the controller just working as a rectifier, but there aren't many times you can spend a lot of time slowing down!

My next bike has a DC motor and no regen, which I figured wouldn't be a major disadvantage, but if 1% or so is as much as I could expect then it won't be a disadvantage at all!
The Engine Whisperer - fixer of things

User avatar
acmotor
Senior Member
Posts: 3595
Joined: Thu, 26 Apr 2007, 03:30
Real Name: Tuarn
Location: Perth,Australia

Ckas electric road bike

Post by acmotor » Tue, 04 Aug 2009, 17:57

? Vectrix owners seem to think more positively about regen.
Google vectrix regen.
Image
iMiEV MY12     105,131km in pure Electric and loving it !

antiscab
Senior Member
Posts: 2446
Joined: Mon, 26 Nov 2007, 05:39
Real Name: Matthew Lacey
Location: Perth, WA

Ckas electric road bike

Post by antiscab » Tue, 04 Aug 2009, 19:46

though none have actually measured the amount of energy returned.

users who have regen setup on the bigger heavier maxi scooters that deal with more traffic than me do report around 7% increase in range. though i suspect that would be riding in chinese traffic, or riding in peak hour and pretending to be a car.

cant wait to hear how the test rides go :D

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

antiscab
Senior Member
Posts: 2446
Joined: Mon, 26 Nov 2007, 05:39
Real Name: Matthew Lacey
Location: Perth, WA

Ckas electric road bike

Post by antiscab » Tue, 04 Aug 2009, 19:50

by heavier, i mean xm-3500 and xm-5000.
these have stock 24 x lfp40 and top speed of around 47mph

the users with regen add more cells (for higher top speed) and get a kelly controller to get the regen.

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

Gow864
Groupie
Posts: 202
Joined: Sun, 27 Jul 2008, 04:37
Real Name: (John) Gary
Location: Bellingen NSW

Ckas electric road bike

Post by Gow864 » Tue, 04 Aug 2009, 21:32

If you're using a DC motor with no regen on a bike, then how about adding a freewheel sprocket (if they're made big enough). No drag from the motor and you'd be able to coast for miles Image, although you'd probably wear the brakes out too quickly.

Gow.
If you are not part of the solution, you are part of the problem.

ckas
Groupie
Posts: 45
Joined: Sat, 29 Sep 2007, 18:06
Location: Australia

Ckas electric road bike

Post by ckas » Sun, 23 Aug 2009, 18:19

Tyre circumference: 1.82m
Gear ratio: 36 tooth to ten tooth or 3.6 (no gear change mechanism)

No regen, I just dont think the added complexity would be worth the extra range on a simple DC setup. Im running out of room already :).

Oh, and my charging system now works. Thank you Mr Dilkes.
Last edited by ckas on Sun, 23 Aug 2009, 08:42, edited 1 time in total.

ckas
Groupie
Posts: 45
Joined: Sat, 29 Sep 2007, 18:06
Location: Australia

Ckas electric road bike

Post by ckas » Sun, 23 Aug 2009, 18:39

Pictures, not expertly taken but should give you an idea of what it will look like.

cas bike photo
cas bike photo2
Last edited by ckas on Sun, 23 Aug 2009, 08:41, edited 1 time in total.

User avatar
Simon
Senior Member
Posts: 431
Joined: Sun, 19 Aug 2007, 19:38
Real Name: Simon
Location: Perth WA
Contact:

Ckas electric road bike

Post by Simon » Sun, 23 Aug 2009, 20:04

Hows does it perform? Have you done any test rides yet?

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

Ckas electric road bike

Post by EV2Go » Tue, 25 Aug 2009, 21:35

looks like an old beamer with the horizontally opposed engine (batteries) and panniers Image

User avatar
woody
Senior Member
Posts: 1713
Joined: Sat, 21 Jun 2008, 02:03
Real Name: Anthony Wood
Location: Mt Colah

Ckas electric road bike

Post by woody » Tue, 25 Aug 2009, 21:55

Hi CKAS,

I've heard bad things about thunderskys on their side, but nothing definitive - maybe it's old wives tales...

If the cells are 220x145x61mm your current box of 10 at the front is approx 460x145x305.

Fitting them vertically running north south (10x1) would be 610mm wide :-(
Fitting them vertically running east west (2x5) would be 725 wide!
East West 3x3 would be 435 wide x 183 deep but a cell left over.

Hmm, no easy solutions.
8 in the front box and 6 in each of the back boxes would do it but you'd have to redo every box :-(

cheers,
Woody
Planned EV: '63 Cortina using AC and LiFePO4 Battery Pack

Carv'n Marv'n
Groupie
Posts: 135
Joined: Wed, 03 Jun 2009, 15:09
Real Name: Simon Williams
Location: Hobart

Ckas electric road bike

Post by Carv'n Marv'n » Mon, 07 Sep 2009, 17:56

Was advised against laying the Thundersky cells on their side - the valve at the top of the battery (I take it to let out pressure should it build up) will leak your juices which ain't good.
Williams Electric - Tilting Trikes

ckas
Groupie
Posts: 45
Joined: Sat, 29 Sep 2007, 18:06
Location: Australia

Ckas electric road bike

Post by ckas » Fri, 18 Sep 2009, 15:24

While the batteries are supposed to be upright I have seen conversions where they are on their side and have no problems. I dont know what it does to life expectancy but we shall see.

ckas
Groupie
Posts: 45
Joined: Sat, 29 Sep 2007, 18:06
Location: Australia

Ckas electric road bike

Post by ckas » Fri, 18 Sep 2009, 15:27

Test rides have been delayed due to work and the fact that every time I have had time to work on it there has been rain. So work has gone into more waterproofing than testing :(

User avatar
Thalass
Senior Member
Posts: 741
Joined: Sun, 12 Aug 2007, 07:29
Real Name: Ben Rypstra
Location: Perth, WA, AU

Ckas electric road bike

Post by Thalass » Fri, 18 Sep 2009, 17:32

Haha waterproofing is good, though. Better that the bike starts out waterproof, then you test it, than you ride it around for a few months before something crazy happens at the first drop of rain next winter.
I'll drive an electric vehicle one day.

ckas
Groupie
Posts: 45
Joined: Sat, 29 Sep 2007, 18:06
Location: Australia

Ckas electric road bike

Post by ckas » Fri, 25 Sep 2009, 23:31

And the first test drive is in!!!!

Goes faster than the original at the 45 km/h I could get up to in the carpark. Video footage as soon as I can manage it


ckas
Groupie
Posts: 45
Joined: Sat, 29 Sep 2007, 18:06
Location: Australia

Ckas electric road bike

Post by ckas » Sat, 03 Oct 2009, 20:21

And the videos are up! Apologies for large file size.
Thank you to EVShop for build help and for cameraman work.

First run

Second run

ckas
Groupie
Posts: 45
Joined: Sat, 29 Sep 2007, 18:06
Location: Australia

Ckas electric road bike

Post by ckas » Sat, 03 Oct 2009, 20:26

The bike will be available for viewing on the WAEVA open day on October 17th at EVShop.

User avatar
Simon
Senior Member
Posts: 431
Joined: Sun, 19 Aug 2007, 19:38
Real Name: Simon
Location: Perth WA
Contact:

Ckas electric road bike

Post by Simon » Sun, 04 Oct 2009, 08:21

Cool!
Looks like it accelerates pretty good!
And sounds a lot quieter than I thought it would be.(not much chain noise)
It took me a couple of unsuccessful tries to view your vids in the QT player and gave up and downloaded them instead.
Do you have a Youtube account to upload the videos to instead?

ckas
Groupie
Posts: 45
Joined: Sat, 29 Sep 2007, 18:06
Location: Australia

Ckas electric road bike

Post by ckas » Tue, 06 Oct 2009, 07:01

Youtube links

Run one

Run two

Post Reply