Hyena's e-bike builds (now with HD video)

[Rix]

Glad the little one is good to go. Yah, that machine is "burning plastic" when they are on the gas. My son's grandpa chopped up and ezip scooter and converted it into an e cycle from my son. At 2 years old, hes just a little small, should be good to go when he turns 3.

Rick

 

[Cyclebutt]

HA! Glad I read the posts before watching the video. It looked like he got flattened! Ouch!

 

[Hyena]

Oh yeah he got flattened alright! Just amazingly not hurt.

Rix, I think the burning plastic is what's actually saving the motor so far. I suspect if I put rubber tyres on it for grip (which I did with his old quad) it'd load up the motor too much.

Only 3 more weeks on my L plates before I take the P's test and then I can start work on the madass conversion.

Here's a few pics from recent outings in stock form. I went for a run down the coast today and had 3 different lots of people come up and ask about it in 5 minutes. I guess I've had my eye on them for a while but I didnt realise they were so obscure to other bike riders. 1 guy though I'd made / customised it myself, another assumed I'd imported, another with a V rod Harley came up and said "that's fu*king gangster man, can I take a photo ?!" LOL

Basically brothers :lol:










Earlier in the week I dropped off my crown motor to glow worm bikes for lacing. No parking on the street - no worries, I'm sure no one will notice if I slip it in here with the bicycles ! :lol:

 

[Rix]

Yah Jay, Madass is Badass and blendid right in.

 

[Hyena]

Sunday arvo project, making a high current fast charger.
Code name: Bumblebee
It's made from 4 modified 32 amp server power supplier in series. This spits out 49v which sags down to 48.4v under load. On its own and with no current limiting this isnt much use as a charger but with another adjustable power supply in series it is.



Enter the 900w commercial lithium charger. This "24v" unit has internal pots to set the voltage and current so I'll use that in series to bring the voltage up. Currently set to 26.6v and limited to 22A it's perfect for my 18S powered bikes and isn't stressing the server power supplies. All power supplies also run off a single 6 channel power board from a standard 10A AC outlet.
Not that I'm intending to lug it around but if I DO have to go elsewhere (eg weekends away to a mates farm or what ever) it's nice to know it'll run on any outlet. I have a 20A outlet in my garage though so when it's time to up the game (either higher voltage or dial the current up) I'll still be able to handle it. This will pretty much only be for charging the madass, it's rare I'd need to recharge the fighter in under an hour at home.

 

[Rix]

Some heavy hardware there Jay. Nothing like having the ability to charge no matter where you go. I am surprised you haven't used solar panel charging yet. Could be ideal for folks that camp and don't want to run a generator.

Rick

 

[t3sla]

The engineering that goes into those power supplies is orders of magnitude higher than what generic mean-well hasand the fact you can buy them for less is an absolute steal.

Just take care of that whole mains to case issue and your golden or should I say yellow

 

[ManoisEscobar]

Hahahahah that little buggy kicks ass. Looks like they're having a blast playing real life GTA.

Glowworms is just down the road from my house! I think I might need to get my motor re-laced. The rim is split all the way though and there are lots of stress cracks forming. It's kind of egg shaped and chugs along like a train. How much did they charge you?

 

[pendragon8000]

Sunday arvo project, making a high current fast charger.
Code name: Bumblebee
It's made from 4 modified 32 amp server power supplier in series. This spits out 49v which sags down to 48.4v under load. On its own and with no current limiting this isnt much use as a charger but with another adjustable power supply in series it is.

so the actual charger acts as a amp limiter? indipendendant of everything. so when your at desired volts it cuts out and keeps its proportional b4 that?
if so....

btw
im so keen to see the Emaddass. lets hoe your soldering is up to the task

 

[voicecoils]

Yah Jay, Madass is Badass and blendid right in.

Agreed, there aren't many motos you can get away with parking on the footpath but the madass is an exception!

 

[Samd]

... (& by patiently I mean he's only told me I'm dead to him once so far :lol: )

He sent me a horse's head for my birthday with a pink bow. His shame knows no bounds. ;P

 

[Hyena]

Just take care of that whole mains to case issue

Fo shizz, isolated earths are a must, especially considering I have the metal cases directly touching one another.

Hahahahah that little buggy kicks ass. Looks like they're having a blast playing real life GTA.

Heh yeah I'm thinking I should re-do the video in proper GTA style and have it go black and white at the end and come up saying wasted. haha

so the actual charger acts as a amp limiter? indipendendant of everything. so when your at desired volts it cuts out and keeps its proportional b4 that?

Correct. If I dropped the output of the power supply module straight across a lipo pack it'd pull huge amps and shut down. But with a lower current supply in series it will limit everything in line with that to the same current. It's the old bottle neck limiting flow analogy - it doesnt matter how much pressure (current) is up stream, if it has to flow through a limited outlet that's as fast as it will flow.

im so keen to see the Emaddass. lets hoe your soldering is up to the task

I reckon that shouldn't be too much of an issue The hardest part will be making the motor mount and keeping it exactly positioned for the right chain line

Hyena's been waiting patiently for his (& by patiently I mean he's only told me I'm dead to him once so far :lol: )

I'll call off the hitman I have watching your girlfriend if it'll be ready by tomorrow :wink:

He sent me a horse's head for my birthday with a pink bow

Yeah I buy my horses heads in bulk. From Ikea.

 

[Rix]

I'll call off the hitman I have watching your girlfriend if it'll be ready by tomorrow :wink:

$h!t is getting serious here, Oh man.....ffffffffffaaaaaaaaaaaaaaarrrrrrrrrrrrrrrrrtttttttttttttt!!!! I crapped myself, it must be the fiber. http://www.youtube.com/watch?feature=player_detailpage&v=AY-dp8mlOv4

It's the old bottle neck limiting flow analogy - it doesnt matter how much pressure (current) is up stream, if it has to flow through a limited outlet that's as fast as it will flow.

In terms that I can understand.

 

[pendragon8000]

Rix... follow through there buddy. LOL LOL
Jay surley you'll have +/- like 5mm or more to play with re chain line . _your favorite_ hence so many hub motors thus far. mesure mesure mesure. using a ruler is easy, being patient enough to use it like a million times isnt

 

[Hyena]

Jay surley you'll have +/- like 5mm or more to play with re chain line

Oh yeah it's not really a drama, I'm just saying that will be the most difficult aspect in an otherwise easy conversion. I'll probably get someone to fab up something as it'll need ot be strong and I haven't really got the gear at home to do it.

But all that might be on hold now, the clutch said it's farewells yesterday on my way home, 2 bloody weeks out from doing my Ps test.
I didn't want to spend any money on the ICE drivetrain as I'm planning to bin it all soon but now I have to fix this. Doing a ring around to try and find replacement parts the local dirt bike mob made a tempting offer. Seems a bloke just bought one of their new dirt bikes but wants to swap out the engine for something even bigger. So they've offered me the complete oil cooled 160cc race engine for only a few hundred more than what it'll cost me to do the clutch. Bigger engine, more power, heavy duty clutch and close ratio gearbox should make it a hoot to belt around the streets on.
My wife has also "expressed opposition" to converting it to electric as she wants to get her license too so it'll need to remain legit for atleast another 3 months.
Someone talk me out of it, quick


And don't call me surley
http://www.youtube.com/watch?v=0A5t5_O8hdA

 

[Rix]

AH! Airplane, another classic. I wont call you shirly surely.

Rick

 

[Hyena]

Oh and speaking of being silly,
Here's a vid of a guy I bumped into on a unicycle with a slightly larger than normal wheel. And when I say slightly larger I mean 36 inches!
He was saying how fast the big wheels made it so naturally I challenged him to a race. Guess who won

Guest staring t3sla

[youtube]5bgSsbLvMog[/youtube]

 

[Pyratsteve]

Hey Hyena, are your kits still for sale?

 

[Architectonic]

Someone talk me out of it, quick

Weaksauce!

Nah man, no hurry.

But you don't want to ride that dirty stinking polluting machine forever.

 

[Hyena]

Boy, that escalated quickly!




I'd rather be starting work on the e-conversion but it should be a bit of fun in the mean time. I pick up the engine tomorrow afternoon and with any luck I'll have it running late tomorrow night.


Pyratsteve, PM sent.

 

[Rix]

So they've offered me the complete oil cooled 160cc race engine for only a few hundred more than what it'll cost me to do the clutch. Bigger engine, more power, heavy duty clutch and close ratio gearbox should make it a hoot to belt around the streets on.

160CC of pure addrenalin man, that is awesome! While your add it, port the heads, remove the plug from the exhaust, and she will scream!

 

[t3sla]

Oh and speaking of being silly,
Here's a vid of a guy I bumped into on a unicycle with a slightly larger than normal wheel. And when I say slightly larger I mean 36 inches!
He was saying how fast the big wheels made it so naturally I challenged him to a race. Guess who won

Guest staring t3sla

[youtube]5bgSsbLvMog[/youtube]

Conclusive evidence that a 36" unicycle is faster than 36V pedelec

 

[Hyena]

160CC of pure addrenalin man, that is awesome! While your add it, port the heads, remove the plug from the exhaust, and she will scream!

Yeah you can get bolt on 4 valve heads for them and big block 185cc kits for only a few hundred bucks. But electric is still the main plan so I won't waste money on any of that. Even the stock 160cc donk puts out 13.5kw which is more than double the original 6kw. It's no sports bike but should be fun.
It kicked to life yesterday, sounded good, then I put the accesssory stuff back on (brakes, drive sprocket etc) and suddenly it stopped working, world no longer run for more than a few seconds and was literally spraying fuel over my leg out the back of the carby. I'll get a new carb for it tomorrow and hopefully that fixes it.
Here's a vid of the test run - she revs pretty quick (I know, I know, this ICE racket is blasphemy )
http://www.youtube.com/watch?v=coz01N_ISug

Conclusive evidence that a 36" unicycle is faster than 36V pedelec

Hah, being faster than a 36v pedalec is like boasting you're more iceberg resistant than the titanic - it pretty much goes without saying

Is it possible to just reuse the old spokes and just get a rim off you guys?

Possible ? Yes. Sensible ? No.
If you've bashed around the wheel hard enough to destroy the rim chances are the spokes aren't far off letting go either. Generally reusing spokes isn't a good idea. You'd also need to replace it with a rim of the same ERD or very close to it (same profile so the spokes aren't too long or short) What you could do is get glowworm to cut the spokes to suit one of their rims and have a crack at lacing it yourself for bonus life experience I've done a few myself and have sat at many a BBQ and family gathering with a motor in my lap roughly lacing up a wheel. If I have the spokes I sometimes do this, get it "near enough" to true then bash it around for a week and then take it to GW for a proper truing. It's fiddley though and certainly much easier with a truing stand, and best outsourced to the experts if you value your time!

Alternatively if you want the cheapest way out uncle Hyena has a used Alex DM24 rim here you can have for free. I might even have a spare set of spokes laying around to suit (you're running a GM direct drive right?) Otherwise $50 odd worth of spokes from gloworm will sort you out and is your cheapest option.

It's going to be more of a 2nd backup bike once I save the dosh for something more ridiculous.
Hyena I have outgrown 48 volts

Awe, they grow up so fast...
Good timing, I'm just about to order a shipment of "something more rediculous"

 

[Rix]

[quote I'm just about to order a shipment of "something more rediculous" ][/quote]

This should be good!

 

[ManoisEscobar]

I'm just about to order a shipment

http://www.youtube.com/watch?v=JfUM5xHUY4M