Coming back to the Ebike sport.

Ozziebike

100 W
Joined
Dec 8, 2014
Messages
105
Hey guys, my name is Robbie, I'm from Melbourne Australia and have decided it's time to get back on an Ebike.
When I was about 14 (9 years ago) I met this really cool guy that lived down the road from me who ran his own super successful computer programming business, but had a real passion for engineering up electric vehicles. He started me off on making an electric powered trike out of a hubbed motor a plank of wood, golf cart wheels, lead acid batteries and a few lengths of metal. The thing was a blast, albeit bloody dangerous. (Had a decent tendency to flip if cornering at high speeds).
After this I decided I needed to use the motor on a bike, so for a year or so i rode around on a hard tail mountain bike with 4 heavy lead acid batteries whacked on a bag rack on the rear. Eventually this became too cumbersome and I left it (although it is still being ridden around today in an updated guise by one of his friends!)
When I was about 17 I found myself and old electric trike at the tip and bought it of them for 30 bucks! I then proceeded chuck the dead old lead acids away, put the motor in a tall frame road bike and bought myself some cheap second hand lipo's that I put in a backpack. This was the first craft that I was properly happy with. With around 500w combined with the super skinny tyres, large diameter rims and long gearing for speed. If i slammed all the power on and pedaled hard I could actually pop a wheelie on this gargantuan frame. Top speed was about 50kph combined heavy pedaling and motor assist. Eventually i sort of lost interest in this bike because it was only good for commuting, and at the time i was just about to start uni so I was catching public transport to the city every day and ended up selling the bike.
I always vowed that the money I got back from the ebike I'd eventually use to make another one. One Uni degree down and 2 years of full time work with the prospect of another year at uni, I am looking to get myself a flexible use ebike that I can use on occasion to get myself to uni (not in the city and much closer to home now), but also just be able to take it out on the weekend for a great urban/parkland freestyle ride. I very much love the idea of being able to go up and down as much possible.

So, here is the part where I start giving you information about what I want, and pose questions;

I have decided that I want a very softcore motorbike so I thought;
Something with front and rear suspension
very wide tures with a moderate amount of tread
midmounted motor probably around 1000w
lipo's that I can mount in the frame for weight distribution as well as not having to carry a battery bag around
Stealth-ish (obviously the amount of power I want is illegal here in Australia, so I don't want to draw too much attention from the fuzz).

My budget is around $2000 (AUD) max with roughly $1,000 on the frame (secondhand). But of course this is flexible depending.
What would you guys suggest?
 
...$1,000 will get you a decent battery pack, another $1,000 for controller and charger, another $500 for other bits such as throttle, wiring, fuses etc. etc.

Go with 18650 cells over LIPO. Samsung 25R or Sony Vt5 are the shit.
Adaptto controller with BMS (also works as charger in conjunction with a power supply) is the best gear going... and would highly recommend.

...or go the Chinese product route - and blow your $1,000 for something that will work... for a while. Good cells and a good BMS or balance charger is a good start.
 
A $2k budget will be tight if you splash half of it on a frame, leaving only $1k for drive system , controller, battery pack, charger, etc etc.
I might suggest searching Gumtree etc for a good used bike ( full sus,p, good fork, etc) in the $500 range....just so that you don't have to cut corners on battery, controller, etc
Figure out your range requirements and battery size first to get a feel for spend and weight factors.
 
Hmmm... Ok, might have to cut back on the bike.,.. I guess it's almost easier for the bike to be upgraded than the electronics.

Everyone seems to be using the Bafang bbs02. How does that handle 1000w with a moderate amount of abuse?

I'd also like to make the bike as waterproof as possible just in case when I ride it to Uni it rains.
 
Can you guys possibly suggest the best sort of value for money build here? I don't think 2k is a budget build by any means, and I am willing to go a bit more,
I juts want to make sure I am spending my money in the right places. I mean I just pulled 1000w figure from the air because I know I was running a 500w hubbed roadbike and judged it from there.
I am quite capable of doing all the custom work plausibly needed, but at this stage I'd just rather mostly plug and play type installation. Especially batteries (CBF'd mucking around with balancing batteries myself and all that. A self regulating battery pack and charger is definitely what I'd prefer.

Where are the best websites for each of these products too (keep in mind I'm in Australia too, so combined shipping would be beneficial).
 
...you can get it all here > http://www.em3ev.com/store/

or here - http://www.emtb.com.au/ (Australian and expensive)

(...or one of thousands of other unknown vendors)

...Paul (EM3EV) uses quality cells and offers great service. Keep in mind, shipping the battery is expensive due to tight regulations on shipping Lithium.

forgot to include motor in last estimate - anywhere from $250 - $750 (shipped)
 
Ok, sounds good so far... So for a 1000w kit is the bafang bbs02 the best choice or is that a little too heavy work on the motor?
 
Well em3ev is fairly reasonable. I can get the 750w bbs02 with the triangular 22p 50v 12AH battery for about $1300 to Australia. This should fit into my budget perfectly

Would this suit what I'm after well?
 
Where in Melb are you located?

You can test some of the custom bikes that the shops around here build (Ballarat e Bikes/Frankencycle etc). I believe Ballarat e-bikes will build a custom frame for full integration as well.

Even with regular cells, you still need to balance them up front the same as Lipo. The only difference is that if you puncture a lipo, you get a fireball. Most of the ebike people I know around Melbourne started off with 18650's and end up with lipo for size/weight/power combination. With a BMS it's literally plug and play anyway.
 
Ozziebike said:
Would this suit what I'm after well?
It's a good choice...
But It's hard to sayid will suit you as we don't know what range/ speed/ use you expect, what sort of roads or hills you may have to deal with, and how much you intend to pedal?

PS:- a 22p, 50v , 12 Ahr battery ???......something wrong there !
 
Eh, that's what it says here....

http://em3ev.com/store/index.php?route=product/product&path=45&product_id=187

Well I'm pretty sold, anything much better will cost a lot more I'd say (and also a lot more fiddling around). So I might just go ahead with
the Bafang kit!

One last question. I have noticed that there seems to be the option to use the bafang as a pedalec or throttle controlled. How are the two separated,
and can either of them be disabled with the ESC? Oh and just out of curiosity... can regenerative breaking be implemented with these?

Oh, oh, oh one one one last thing. I noticed that this kit came with break levers. Do these need to be used, and why are they used? I potentially interested
in using hydraulic brakes so would be a problem.

Cheers guys!
 
22P is the cell type, not 22 cells in parallel. It is described on the battery pack page.
 
Oh lol, no not 22 cells in parallel!

But I'm not sure what those cell markings mean.... Cell quality or something.

But yeah I'm ready to pull the trigger guys, just want to know about those small things in the post above.
 
Ozziebike said:
Eh, that's what it says here....

One last question. I have noticed that there seems to be the option to use the bafang as a pedalec or throttle controlled. How are the two separated,
and can either of them be disabled with the ESC? Oh and just out of curiosity... can regenerative breaking be implemented with these?

Oh, oh, oh one one one last thing. I noticed that this kit came with break levers. Do these need to be used, and why are they used? I potentially interested
in using hydraulic brakes so would be a problem.
!

Pedelec is power assisted pedalling which is what is legal in VIC above 6km/h. Throttle only use above that speed is illegal but 750W is illegal anyway so it doesn't really matter does it? :wink:

No, you cannot have regenerative braking with this.

The brake levers are to give a motor cutoff under braking which is a good thing, safety wise.
 
No regen with center drive ,... There are 2 free wheels between the wheel and the motor.
Brake levers will have electrical kill switches to cut the power when you hit the brakes... A legal requirement in many countries.
Sorry, I don't know about the throttle/Pedalec options.
 
Yeah I was thinking that regen wouldn't be likely considering the freewheeling hub. Wow can you imagine how dangerous a electric fixie bike would be!??!?

This bike will be 3 times over our maximum power limit here, so I'm not so concerned about the breaks. Alright then! I think I'll go ahead and order it now then :O

Big monehs!
 
Hmmm.... actually... If I'm going to do it... I may as well do it very right.

I think I might go for the lightning rod... I'll have to price it all up, but I'll see...
 
If I were starting from scratch and broke, VTV5's in a "snath" pack feeding a Lebowski controller to a magic pie.

Or if super broke, magic pie 4.0 using the internal controller.
 
What the hell was all that you said???

I am not broke... I thought 2k was a fairly decent budget??? :/
 
48v/750w BBS02 from EM3EV with the 22P 12ah triangle battery is what I fitted to my Kona Dawg. Works really well in real life and I'm very happy with it, really is a low powered motorbike will do over 50kph with 48t front chainwheel.
The 48t is a bit high for steep off road stuff so ordered a 44t and 46t to try. The 44t is good off road but cuts top speed considerably, haven't tried the 46t yet but suspect it may be the ideal compromise.
Comes with throttle and brake levers. The supplied throttle is not very linear in operation so bought one from CA which is really good.
Didn't fit the brake levers as the bike has hydraulic brakes and an 8 speed Alfine IGH, so just back off, change gears and keep going, works well.
 
Hummm, well that sounds like a really good rap for it... Well I'll price up the lightning rods kit first and see how it compares...
 
Ok, I've done a complete backflip and I think I have decided what I'll do.

GNG v2 run at 1000w-1250w - When shit dies on it pay for the upgraded parts I need.

Good quality battery 48v around 12 AH? Still deciding which battery is best, but I'm looking around the $500+ mark.

Should give me "off the shelf" performance, and when things go on the motor I can upgrade them as I go, spreading out the cost of
the bike, as well as only replacing the things that my style of riding puts abuse on.
 
Oh yeah, and now I'm a little confused... Which is their best set up here?

http://www.gngebike.com/mid-drive-kits

I see they have a chain reduction mid drive... Is that the best option?
 
just to throw another into the discussion. I have a 1000w Dillenger kit and was happy with it for commuting but then I rode my friends 500-1000w Mac motor hub kit from Paul at em3ev with 50v 12-5ah battery and it smokes mine! So much more power and torque! The Mac motor does 20km/h faster than mine using half the power! Damn got to save my pennies again. Well worth a thought while you are flip flopping :p
 
Happy to help if I can. I'm doing all kind of projects at the moment. In between those, I've got a nice Norco shore cut and ready for welding, and another of my budget 666 frames semi finished. Sitting since September while I finish other stuff. http://instagram.com/p/tcENQsHFaW/?modal=true

This might get your juices happening.
http://instagram.com/ballaratebikes

I'm currently re-engineering a GNG chain primary for PRW also, and have fitted a raft of different BBS middrives if you want my perspective on those, and you have your heart set on a middrive. I'll have a bit of time between xmas and NYE if you want to try a bike or two, or throw it around.

Cheers.
 
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