2 ebike builds, 1x hub drive MP, 1x chain drive hpm5000b

[nechaus]

48 volts is good to, but i like to have alot of amps for the fast acceleration.
stock mp3 controllers are 35 amps continuous, about 1.6kw. The inbuilt controller can be run with halls or with out... pretty nifty feature.

im gonna do a tidy up on my bike soon, make a bit more presentable and stealthy

I got some LED strips today that are bendable, they run on 12 volts, i plan to stick them on the front forks, have a switch on the handle bars.
I enjoy riding in the forest at night time sometimes, id like to light up the entire area and then have my main lights for longer distance.

[Emoto]

he did have a clyde 4080 [ i didnt know they existed ]

Who/where was this ? I didnt know there were 9C clones floating around locally, let alone H40s!

Hi Hyena dont worry mate he's know threat to you, hell ill prob get a deal of you instead, whats the best contact to you so i can get some prices on motors ect.
What do you think that h4080 is worth.

[Hyena]

I got some LED strips today that are bendable, they run on 12 volts, i plan to stick them on the front forks, have a switch on the handle bars.
I enjoy riding in the forest at night time sometimes, id like to light up the entire area and then have my main lights for longer distance.

I think you'll be disappointed if you plan to use those to light up your surroundings while moving.
I have played with a number of those (replaced lots of wasteful 100w long halogen globes in my house with a few short strips of those for about 1/10th the power consumption ) but they don't have any throw at all.
They're good on the road for being seen, but not for you actually seeing where you're going - especially in a forest. If you want to get up any sort of pace you'll want a P7 or T6 LED or what ever those $29 ebay cheapies use over in the for sale section that alot of people have been getting on to. Anything over 40km/hr with a single (above) LED offroad gets a hit hairy. I use 2 - one angled high and one low for close range and long range illumination.

Emoto, I'm not worried about competition at all, I build kits largely as a hobby but I'm geniunely curious to know who else has these. I busted my balls hard to get these in from China so if I can get them from someone locally that'd be cool. The ebike scene in Aus is still pretty small so it's good to know everyone involved

[Emoto]

Hi Hyena No worries, when i saw the guy he invited me to his home, and and i got the feeling that not many do so i will have to respect the privilige. id do the same for you , i know youll understand.

I have made a ghetto engine mounting plate and brackets for my hpm.. its attached to the rear of the bike, also has a small off road motorbike wheel & tyre..
it looks a bit weird but im using parts i have laying around.

I read that a 420 chain would fit a 40 size chain sprocket...
does not fit.

So iv order more sprockets, chains for the correct size... its a real bugger to get #40 chain here, think its for gokarts.. I should have it up and riding in about a week and ill take some pics and videos..


Im keen to try the dual pie.. im thinking of trying sensorless controllers and oil cooling..

I think once i go chain drive, i may not go back to hub drive.

Nechaus soon youll be wanting one of these SM610, im going the other way and selling her soon, ebike is calling me.

[nechaus]

I think next up is an Agni on a BMX
but for now, ill get some enjoyment out of my new build first

[nechaus]

lots of work to be done.
but here is a small pic.

List of things i need to do
-Proper wire tidy up, I dont want any cloth/duct tape on my bike. ( ordered heaps of wire mesh for all my wiring )
-Carbon battery box
-Atm I have the modified rear swing arm bolted on, bolts need to be trimmed, I may possibly weld it together instead im not sure.
-Throttle ramp up i think will need to be applied, or throttle change, just hooked up a thumb throttle. ( will post a short video soon of the motor spinning, it seems to reach top rpm with very little touch, but i need chain on the bike so i can get the wheel spinning to really see whats going on.
-Disc brakes on the back, just got bicycles ones on the front
-freewheel + new sprocket on the back, if i break the freewheel i will just use it without. hmm..
- make the bike look a bit more attractive with the rear swing arm covered in carbon fiber and any other steel bits iv added.
- rear wheel change, keeping the small size but its needs a slick
- front wheel change and possible new front forks to a small wheel, maybe 26 inch. not the damm 29er

[nechaus]

my shed is such a friken mess


But when im able to ride it, im going to have to take it for a spin down the street.
Iv got a handy 200 watt sticker to put on my motor !!!

Im going to do a side by side demonstration of the magic pie 26 inch wheel, 8 kw @ 104 volts
and compare it to this little beast, power yet it unknown as i have not even tested it
but the batteries are new, 8 x 5s 8ah 30 c running 20s 2p 84 volt off charge 16 ah. prob good for 320 amp peaks, however controller is limited to 300 amp peak

[nechaus]

another pic

[nechaus]

http://www.youtube.com/watch?v=rbz3IxR3zJU

pretty crap video not showing you much of anything, however you can hear the kind of sound it makes.
No load current appears to be about 4/5amp

[jamo96]

What are your first impressions of the Golden Motor controller? Do you know if it is sine or block?

What are the specs of the one you bought?

... Im interested in buying one myself.

[nechaus]

Well since i have not yet been able to actually do any load testing, i don't know.
I should really open it up and have a look at the inside, see what fets it has. not sure what type of wave output it has,
waiting on a bunch of sprockets and stuff to get it running.

got myself a bmx wheel today that im going to use on the back.
The only thing im worried ill break is the dicta free wheel that i ordered, iv never used them b4... going to bolt 2 sprockets on it.

[Emoto]

Hi Nechaus im still on the fence for a motor, who is the manufacturer or model of the first DD you tried and what size freewheel could you get away with , have you tried the 9c against it yet any other threads on it.
Anyone else got one or info.

[nechaus]

contact hyena for some hubs, he might have some

[nechaus]

some inside pics of hpm

[neptronix]

Rather burly!
Is that rust or anti-rust stuff on the motor?

I wonder how our motors will compare. Yours and mine might literally be using the same stator.. you never know.. this is China we are talking about!

[Hyena]

Looks like rust, if so that's pretty poor for a new motor. Though as above, this is china we're talking about

Looks like alot of end turn losses

[heathyoung]

Yep that looks like something I have wound

Probably wound on a jig, then stuffed into place - yuk.

[nechaus]

No, that's not my motor but a picture of another hpm5000b

[nechaus]

Rather burly!
Is that rust or anti-rust stuff on the motor?

I wonder how our motors will compare. Yours and mine might literally be using the same stator.. you never know.. this is China we are talking about!

I don't know, iv got 2 controllers to try on it.
What wheel speed are you aiming for ?

iv ordered a 72 tooth sprocket for the rear massive !!! #41 chain 9 tooth motor sprocket
and i also have a 52 tooth sprocket for the rear with the same 9 tooth motor sprocket.

I am going to test both and see which one i like the most, I really like the KV rating on the motor you have!!

[boostjuice]

I wonder how our motors will compare. Yours and mine might literally be using the same stator.. you never know.. this is China we are talking about!

Not likely given its an axial flux design


BTW nechaus, Im really interested to see how your HPC300H controller behaves over the longer term. Hopefully the 'H' revision addresses some of the issues inherent to the earlier versions, namely what Luke described.

"....the control firmware is glitchy and they occasionally just explode." >> http://endless-sphere.com/forums/viewtopic.php?f=28&t=34628&p=504356&#p504356

If your controller behaves well over the longer term, it may just give me the confidence to consider one myself. The cost of a Sevcon is just piss-in-your-face extortion when accounting for the programming software/handpiece

[neptronix]

I am aiming for about 42mph at nominal voltage on a 21" total wheel diameter. 50rpm/v is what this motor is at.

I'm using a 12T 40# chain to a 39T disc brake mounted sprocket.

Yeah, the low KV is why i bought it. Golden motor couldn't give me an answer about the kV on their motors, nor could their dealers! That was an issue i wasn't willing to look past.

Glad that's not your motor. I would have been like.. wtf!
Looks similar to mine, but i've not had mine apart just yet. I like the casing on that motor a lot better. Mine looks like a piece of industrial equipment.

I don't know, iv got 2 controllers to try on it.
What wheel speed are you aiming for ?

iv ordered a 72 tooth sprocket for the rear massive !!! #41 chain 9 tooth motor sprocket
and i also have a 52 tooth sprocket for the rear with the same 9 tooth motor sprocket.

I am going to test both and see which one i like the most, I really like the KV rating on the motor you have!!

[John in CR]

...Golden motor couldn't give me an answer about the kV on their motors, nor could their dealers! That was an issue i wasn't willing to look past....

I guess they weren't willing to look past the fact that Kv and a whole lot more motor performance information is included in their motor test reports listed right on the website with the motors. Hell, on the big motor they even include the phase resistance and inductance for the different winds.

John

[nechaus]

graph

[Hyena]

wow, 1000w no load and 8000w at max efficiency. What a thirsty pig!
I hope you've got alot of money and room on your frame for batteries!

[neptronix]

...Golden motor couldn't give me an answer about the kV on their motors, nor could their dealers! That was an issue i wasn't willing to look past....

I guess they weren't willing to look past the fact that Kv and a whole lot more motor performance information is included in their motor test reports listed right on the website with the motors. Hell, on the big motor they even include the phase resistance and inductance for the different winds.

John

They actually don't make sense to me. Like for the 104v motor in the 'curve', they say no load is 51xx RPM, but in their testing, they list 200A x 200v = 6000rpm = 20,000w for a 5000w motor.... what?

So i saw the no load rpm, but the figures on the top left me a bit confused and i wanted clarification. I called the dealer in Canada, he said they hadn't told him squat about the motor and that he couldn't get any answers from them, but if i find out, let him know

Then i got ahold of the Chinese sales dude on Skype.

Now, I worked customer service jobs for about 9 years of my life and answering stupid questions with a straight face is part of the job. When your main sales person in China is rude and keeps putting you on hold, making a 3 simple question conversation into a 30 minute conversation, ya tend to want to look elsewhere.

He didn't even have an answer for me. So i told him maybe i'd get the 104v model and run it at lower voltage.. then he said that running the slowest rpm/v motor on low volts would have overheated it, on a bike... and that it was a bad idea to do so.

And that is the story on how i ended up not buying the golden motor 5kW motor.

Now when i called motenergy, the person that picked up the phone was actually one of the engineers/design guys, and knew the rpm/v right off the top of the head, then started rattling off all sorts of info as soon as he heard i was hooking the motor up to an eBike.

BTW nechaus, which motor did you buy, the one for 48, 72, or 104v ( sometimes they call it a 96v.. )?