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Posted on 9 March 2013 at 10:06 pm (CET)
Posted on 9 March 2013 at 10:06 pm (CET)

Today I made a test setup to check if the controller and motor work well. First I setup the controller on my computer, very easy to do and can't really set anything wrong because of the clear descriptions. I then cut some cables out of the old wire harness, didn't really have anything else to use. To be sure I also added the keyswitch so I could turn it on and off.

E-Streetquad Controller and motor test


Thankfully everything worked perfectly. Also made a short video so you can see the motor spinning. When turning on the controller you always have to wait before you can control the motor because the capacitors are being charged up. If this wouldn't happen and they directly get high voltage it could damage them. After this is done the contactors (big relais) close, the motor can be controlled and you can 'drive'.


Sorry it's so short, had a bit more footage but something went wrong with filming. By the way, this is with 2 12V batteries in series, so 24V. But in the controller I set a limit for the motor of 13V 10A. Did this because I wasn't sure the small Chinese wires I used would survive with higher voltage and current. But I must say I'm impressed, it was already pretty hard to keep the motor in place with 1 hand when I fully opened the hall sensor, already noticed the torque quite well. I did see 16V going to the motor and 18A so the limit isn't working perfectly. So this was 288W (0,288kW). Still hard to imagine how it'll be like with 25+kW but it's looking good.

Posted on 8 March 2013 at 12:14 am (CET)
Category: Electric motor, General
Posted on 8 March 2013 at 12:14 am (CET)
Category: Electric motor, General

Tonight I detached the rear swing arm partially and fitted the motor. I knew that it would be a close fit but it really only has a few millimeters to spare.
Seen from the side it all fits well, some space left even.

E-Streetquad Fitting the motor


Seen from the rear, not a lot of space but I think it's enough to still be able to mount the sprocket on there. The sprocket will stick out of the axle just a bit to get the chain aligned with the rear sprocket.

E-Streetquad Fitting the motor


But then on the other side, I think it's 2-3 mm of space there. It's just barely enough as long as there won't be any play in the swingarm.

E-Streetquad Fitting the motor


I'm happy that it fits just like I planned. Now I have to get some mounts made.

I also still received the new banjo bolt with sensor for the brake lights. So I replaced this one as well.

E-Streetquad Fitting the motor

Posted on 6 March 2013 at 10:07 pm (CET)
Category: Electric motor, Parts
Posted on 6 March 2013 at 10:07 pm (CET)
Category: Electric motor, Parts

Today I got a package with a total weight of 18kg, what could it be?

E-Streetquad Motor has finally arrived


Finally received the motor from LMC Ltd., with some more important parts.
Here's the motor, think it's pretty cool how you can get so much power out of such a small motor. But it's pretty heavy for the size, it weighs 11kg.

E-Streetquad Motor has finally arrived


And the other parts.

E-Streetquad Motor has finally arrived


On the left 2 contactors (big relais) to switch positive and negative to the motor, so to be able to drive in reverse. Much bigger than I expected, will have to see where I could best place this.
On top the emergency switch with lock, with a press of the button the 72V towards the controller can be disabled with this. Just in case I can't turn off the controller with 12V (keyswitch/killswitch) if anything goes wrong. Or for safe maintenance. The key is needed to turn it on again.
At the bottom another contactor, this was intended for a different controller at first. The controller I have now already has 2 built in. But to be sure I still kept it in my order. Planning to use this in the middle of the battery pack now so it's a bit safer to work with (36V DC is a lot safer than 72V).
On the right the main fuse with fuse holder. Yet again a problem though, it doesn't fit. The bolts are just a bit too thick, the fuse doesn't fit on it. Comes all the way from England so it'll be hard to send back to get a new one. Will have to see how I'm going to solve this, otherwise I'll just buy a different fuse holder here.

First thing I'll do now is remove the rear swingarm to find out the best way to mount the motor on there (can't get it in without removing since the motor is just a bit too big to fit through the frame). I can only mount the motor on one side so it'll have to be pretty sturdy.
After that I'll have some mounts made for the motor and controller and I can finally start adding things onto the frame and connect all cables. At least up to the batteries since I won't have them yet for another 7 weeks or so.

Posted on 3 March 2013 at 07:35 pm (CET)
Category: General
Posted on 3 March 2013 at 07:35 pm (CET)
Category: General

Seeing as the enclosure for the controller is all done now I checked if it would fit in the place where the exhaust silencers once were. There's enough space up to the brake calipers but the brake line is in the way though. I was able to turn this around so it would point down a bit instead of up. On the picture it might seem as if it's very tight but it actually isn't, it's just nicely rounded. Think it's even better than original now, not much movement when the suspension compresses.

E-Streetquad Small changes to brake line and mirror mounts


There's enough space now since the brake line is at the same height as the brake caliper.

I also broke down the old brake and clutch lever, cut off the parts for the levers and rounded it off nicely. I only kept the mounts for the mirrors.

E-Streetquad Small changes to brake line and mirror mounts


And they still fit well on the handlebar, just have to respray them in black.

E-Streetquad Small changes to brake line and mirror mounts

Posted on 2 March 2013 at 11:34 pm (CET)
Category: Controller, Parts
Posted on 2 March 2013 at 11:34 pm (CET)
Category: Controller, Parts

Today I received the cable glands from Rebbl. Also still ordered 2 fuses and fuse holders with them for the charger and DC-DC converter.

E-Streetquad More parts and preparation of controller enclosure


Only a small mistake again, I asked for black cable glands but I received gray for the little ones. No idea how this happened since the bigger ones are black and they were both in the same package. So I'll have to wait and see again if I can trade these for black ones.

Also started with preparations for the controller enclosure. On the front I shortened it a bit since it was taller than the side parts. Drilled holes to attach everything. Made some cables that will connect to the mesh shield in the orange cables for earthing. Also fitted the cable glands. So this is what it will look like, just have to imagine the orange cables. And there will also be RFI filters on those cables. Then it should be all complete.

E-Streetquad More parts and preparation of controller enclosure


Will just still spray the enclosure black, should look at least a bit better then.

Also still have some good news. If all goes well LMC Ltd., where I ordered the motor, should have everything ready for shipping by monday. Might actually get the motor then next week.
The CALB CA60 batteries were also finally ordered, delivery time of approximately 7 weeks now. After that time I should have everything here (if I didn't forget anything) and then I just need to build everything up.