Aussie Role Call

[Rodney64]

Kim
Stick with the swimming and drinking it's easier on your back

[Hyena]

Harder on the lungs though if you do both together

[sico]

Kim
Stick with the swimming and drinking it's easier on your back

I've tried 'em all on my back and I reckon drinking is the hardest

[jamo96]

Finally go around to posting the go kart I put together. I think I mentioned it a while back introducing myself in this thread.

viewtopic.php?f=34&t=40631

[thewmatusmoloki]

I've tried 'em all on my back and I reckon drinking is the hardest

You might not be doing it right

[winchmeup]

The original post has been a while but i thought i would join in.

I'm in Adelaide. (had a quick scroll through and didnt see anyone else)

I have two kids gokarts. I like to call them Car Boot Racers as they fit in a car's boot. They start out as 50cc pocket bikes and with a little cutting and welding and a school chair seat they're good to go. We usually just go to a car park or school, throw some cones out, instant racetrack. No one gives us grief as i think they look at it as a toy.
The original is a 900w brushed scooter motor on 24v 16AH Golden Motor Battery Pack. (this has been dying a slow death and now is pretty useless) It usedto do about 25km/h even with me in it. It would snap the kids head back with the 7 year old. Probably going to put 36v lipo through it to just liven it up again.

The other is still on going turnigy 80-85 170kv 15s lipo and Keywin controller. My other posts have shown i have had a lot of probs with the controller but ..... I think its all good to try tomorrow. Cant wait just to see how it goes.

this site is amazing and might a say a little intimidating just how smart everyone is. Thats why i havent commented on posts since joining.

Regards Steve
i stuffed up and put this on Mars Go kart feed also

[sn0wchyld]

The original post has been a while but i thought i would join in.

I'm in Adelaide. (had a quick scroll through and didnt see anyone else)

I have two kids gokarts. I like to call them Car Boot Racers as they fit in a car's boot. They start out as 50cc pocket bikes and with a little cutting and welding and a school chair seat they're good to go. We usually just go to a car park or school, throw some cones out, instant racetrack. No one gives us grief as i think they look at it as a toy.
The original is a 900w brushed scooter motor on 24v 16AH Golden Motor Battery Pack. (this has been dying a slow death and now is pretty useless) It usedto do about 25km/h even with me in it. It would snap the kids head back with the 7 year old. Probably going to put 36v lipo through it to just liven it up again.

The other is still on going turnigy 80-85 170kv 15s lipo and Keywin controller. My other posts have shown i have had a lot of probs with the controller but ..... I think its all good to try tomorrow. Cant wait just to see how it goes.

this site is amazing and might a say a little intimidating just how smart everyone is. Thats why i havent commented on posts since joining.

Regards Steve
i stuffed up and put this on Mars Go kart feed also

your not allone down south mate!
carts sound like fun... but... have you got a bike going yet?

and dont be intimidated mate. I was too initially, but there's such a wealth of info and knowledge here, backed with some really helpful people that you'll learn fast and be comfortable before you know it.

[winchmeup]

Hi snow child

Since my first post for help i have experienced the fantastic willingess of peple wanting and able to help. Hopefully i can help someone one day.

I guess by your name and photo that you are also into snowboarding. I am off tomorrow to Perisher to drop my son there for the seasons work. I'm only going to get one days skiing but hey thats better than nothing. Back on Monday

Hopefull next week i can get this this going.

No bike yet. Will probably take the 900w off the gokart and put it on something afeter i get the second one going.

Cheers Steve

[Architectonic]

I have a question for my Aussie brothers - where to get 13-28T (7 spd) Shimano freewheel for a reasonable price including shipping and what chain do you recommend for durability?

[winchmeup]

Sorry i have no idea. i would just go to a bike shop or try ebay/gumtree etc
Steve

[heathyoung]

EMTB.com.au had them I think, and a bog standard shimano hyperglide chain works fine as well. The cheap chinese freewheels shear off the cogs if you are a fat bugger like me who stands hard on the pedals to get away from the lights.

Don't buy Kmart crap, you will regret it

[The Mighty Volt]

UK whipping that arse now.....

[t3sla]

I know I should start a build thread, but ehehehemehemehemeheerhghghghghg

This is the bike I'm thinking of using as my base
http://www.marinbikes.com/2010/bicycles ... 7.8_c1.jpg


any thoughts??


my only one is, where you gonna but the batteries fool

[sn0wchyld]

I know I should start a build thread, but ehehehemehemehemeheerhghghghghg

This is the bike I'm thinking of using as my base
http://www.marinbikes.com/2010/bicycles ... 7.8_c1.jpg


any thoughts??


my only one is, where you gonna but the batteries fool

yea great looking bike, but mounting more than about 800wh is gonna be a bit of a pain. hub or mid drive? It looks like it has removable dropouts so making bulletproof torque plates, or even just chainging the wheelbase is gonna be a breeze. if its a hub you could always mount the bats on the handlebars. otherwise that downtube looks like the best spot, both beside and benith assuming ure packs are thin enough to not get hit by the front wheel.

[t3sla]

24s 8Ah nano-tech (the shame) think either side of the top of the frame,
H35 heyna shit edition...
12fet lyen sensorless (for now)

the drop out situation makes it, sucks that about the lack of mounting options, but I just want a high torque short ride machine that i can top up quickly using 20Ah charges and them smash out some more fun while out.


next project will be a 1kw folder (I have a soft spot for mini folders, think they are super cool for short trips) and the one after that will be a cro motor in a stealth frame

[sn0wchyld]

24s 8Ah nano-tech (the shame) think either side of the top of the frame,
H35 heyna shit edition...
12fet lyen sensorless (for now)

the drop out situation makes it, sucks that about the lack of mounting options, but I just want a high torque short ride machine that i can top up quickly using 20Ah charges and them smash out some more fun while out.


next project will be a 1kw folder (I have a soft spot for mini folders, think they are super cool for short trips) and the one after that will be a cro motor in a stealth frame

its hard to tell but the swing arm may come up quite high under full compression, so you may be limited to how much you can fit beside the top tube... if your only having 24s 8ah then you could use two small packs... one on the handlebars and one on the frame. it means a bit more time needs to be spent on the build but should result in a very subtle look. lookin forward to seeing what you come up with!

make sure you get a HT... they hall ass on 24s. and get a sensored controller if you can... not essential but regen breaking is nice when you need a bit more juice.

[Rutiger]

Here.

Brisbane (west side, Goodna actually).

I'm still reading, learning, researching at the moment.

I have a Giant Yukon that I'd like to convert to commute to work on.

Trying to get my head around the maths of electric motors and batteries.

[Timma2500]

Hi Rutiger, welcome to E.S.

It does take a while to get your head around the battery and motor stuff but you'll get there


What distance is your commute?

Are you able to charge at work?

What top speed were you hoping for?

Would you prefer a safe chemistry battery / heavier / less power potential or would you be happy with a slightly less safer chemistry with more power potential / lighter / smaller?

Is your commute hilly or reasonably flat? - from memory, Goodna is fairly flat isn't it? (i lived in Brissy up 'till 4yrs ago)

What is your approx weight, are you a smaller or bigger bloke?

Either way, there are a few basics you'll need: good brakes (hydraulic discs preferably), a CA meter (from Ebikes.ca) and torque arms to hold your axle in place (if you go for a hub motor).

There are plenty of helpfull people on E.S so don't hesitate to ask any questions you may have. We also know who the good vendors are when it comes time to purchase motor kits etc so that should be an easy choice too. An example is Hyena who is based in Sydney, he could supply you with a whole kit if need be, maybe send him a PM and see what he'd recommend based on the questions i've asked above. I've met him personally and had several sales interactions, he's a champion bloke, funny bugger and knows his stuff

Paul

P.S. don't forget to start a build thread when your ready!

[Rutiger]

Hi Rutiger, welcome to E.S.

It does take a while to get your head around the battery and motor stuff but you'll get there

Thanks. I'm reasonably maths/science minded and quiet technical, so I should be able to get my head around it.

What distance is your commute?

Are you able to charge at work?

What top speed were you hoping for?

Would you prefer a safe chemistry battery / heavier / less power potential or would you be happy with a slightly less safer chemistry with more power potential / lighter / smaller?

Is your commute hilly or reasonably flat? - from memory, Goodna is fairly flat isn't it? (i lived in Brissy up 'till 4yrs ago)

What is your approx weight, are you a smaller or bigger bloke?

Commute distance is about 30km, give or take 1km.

Yes, I can charge at work.

Top speed I'm not really worried about, but I would like to try to make the trip in about 1hr 15m.
Although, I am aware that not running the motor and batteries flat out will make for a more efficient use of energy, so maybe a top speed of 40kph would allow me to cruise on 25-30-35kph fairly easily?

I don't mind whether I use LiPo or LiFePo4. If one is cheaper and lighter and allows me to go faster and further for the same size, I'll choose that, even if it's more likely to explode. ;p

Goodna is sort of on the side of a big hill. The final climb from the bike path to my place (based on GPS data) is about 80m over 2km. And that's in the last 2.5km of the ride home. I have a GPS track of a train ride home and goes up and down about 4 times. The final hill is by far the biggest.

I'm a bit under 80kg clothed.

Either way, there are a few basics you'll need: good brakes (hydraulic discs preferably), a CA meter (from Ebikes.ca) and torque arms to hold your axle in place (if you go for a hub motor).

There are plenty of helpfull people on E.S so don't hesitate to ask any questions you may have. We also know who the good vendors are when it comes time to purchase motor kits etc so that should be an easy choice too. An example is Hyena who is based in Sydney, he could supply you with a whole kit if need be, maybe send him a PM and see what he'd recommend based on the questions i've asked above. I've met him personally and had several sales interactions, he's a champion bloke, funny bugger and knows his stuff

Paul

P.S. don't forget to start a build thread when your ready!

Thanks again.

[Architectonic]

700 watt hours would allow you to make the trip while cruising at around 40 km/h.

I live in an apartment and charge in my living room, so I'm not willing to take the risk with lipo.(I have an A123 triangle battery from Paul/Cellman, but they aren't available anymore). You can still get the triangle bags from FalconEV.

Be sure to use proper protection if you use lipo: http://www.methtek.com/category/battery-protection/

I am a big fan of the Mac motors for commuting, but Cellman also sells the MXUS motors with fast windings fairly cheaply:
http://em3ev.com/store/index.php?route= ... duct_id=54
(the 370rpm is very similar to the 9C 2806)

That or an 8T MAC motor (similar to BMC v2 Speed on calculator) will give excellent range and performance on 16S (16 cells in series) 12 AH Lipo (or LiFe).

http://www.ebikes.ca/simulator/

[Timma2500]

Sorry mate, i wasn't sure just how much research you'd done but you're onto it already!

If i were you, i'd go for a geared Mac 10 or 12turn (26" mtb wheel) with a 12fet controller on 12s lipo. Running them on 12s opens up easy charging options such as the Hyperion balancing charger, keeps the weight down by running a smaller battery or gives you the option of running a larger capacity pack with minimal weight addition (10ah vs 15ah) and packaging a smaller battery on a bike is always easier.

My girlfriend's bike runs the 8turn version in a 24" mtb wheel on 12s lipo and i like it, its torquey and still has plenty of top end speed on the 3rd speed switch (about 45 - 50kph from memory). Its also physically smaller and lighter than the larger HT and HS Crystalyte motors.

Cell_Man on this forum sells the Macs, great bloke and really good customer service.


Paul

EDIT: Haha, Architectonic got in as i was typing! I was thinking the 12t Mac might be better suited to your speed requirements whilst giving strong torque for the hills, esp the last one on your way home. The 8t would be good too but give you alot more top speed at the expense of torque. Choices choices choices!
Edited again to put in the correct turn count for my missus's bike motor, der....

[Rutiger]

Thank you both for all the info. I have a bunch of questions, but I'll try and find the answers myself.
I've done heaps of reading on LiFePo batteries, but think I'll go with LiPo instead, so I need to read about them for ebikes instead.
I also need to look more into the motors, because most of the questions I have relate to suggestions about the motors and turns and controllers with fets and whatnot. ;p

[Architectonic]

The 8t would be good too but give you alot more top speed at the expense of torque.

The 8T is fine, you just have to pedal a bit on extremely steep (25%+) grades. He wants a little bit of extra speed, he just doesn't know it yet.

I didn't realise about the configuration needed for the good balancing charger (which if I was doing lipo, I'd prefer for the safety aspect). 12S would probably be fine as you say.

I'd get the 8T if I was running 12S Lipo and was riding on the street... For mountain biking, I'd get the 10T or 12T though (with a spare clutch and keyway).

[Rutiger]

The 8T is fine, you just have to pedal a bit on extremely steep (25%+) grades. He wants a little bit of extra speed, he just doesn't know it yet.

Haha, true. Except I do know it, I'm just trying not to get carried away.

I was leaning more towards 10T just so it's not labouring up the hill, which may only be 10%, but is 2km long.

[Rutiger]

Can anyone tell what motor this is?
http://www.motiondynamics.com.au/e-bike ... -rear.html