Blog / General
Posted on 6 July 2014 at 01:56 pm (CET)
Much has happened again this week. I completely dismantled the quad bike so that all parts of the frame can be sprayed soon. Was pretty fun since I've literally had each and every part of the quad bike in my hands, I know exactly how it all fits together now. I've also come across certain things that I'll be replacing right away with better alternatives, especially the bearings and the bushings in the front swingarms and rear swingarm.
I was able to remove the whole brake system without even having to disconnect a single brake line.
And this is what the quad bike looks like right now, only parts everywhere.
I already removed the bushings in all of the swingarms. These are all still new bushings but they don't really look like that. These Chinese bushings also don't really work like rubber bushings are supposed to work, they're actually hinging in the swingarm itself instead of in the rubber so it's steel on steel. This will wear out very quickly, especially since there was no grease at all anywhere. The plan is to place POM bushings in here, works much better and lasts much longer too.
I also got some new parts again. These are all the wires that I'll need to make the whole wire harness.
There's also a handle switch and 2 mounting points for the mirrors. And also a seperate killswitch with cord so the high voltage will be disabled if I leave the quad bike in any way.
But the most important is that the gauge and charge plate are done and thanks to Geraets Metaalbewerking they turned out very nicely again. Everything fits perfectly again as well. I just can't really show yet how it'll all be mounted exactly since the quad bike is dismantled but to give an idea I've made a few pictures.
I'm working on making all of the mounting points to size now, these might get welded to the frame this coming week then.
Posted on 13 June 2014 at 01:06 am (CET)
Past few days I've been busy drawing the whole wiring diagram. I'm pretty sure everything will actually be connected like this now. Only those 3 wires of the Battery Management System I'm not really sure about how to connect them yet. These are for drastically reducing the power when the batteries are empty so you can't undercharge them. But there should still be enough power to get the quad bike off the road safely. This can be connected in a few ways so I'll still wait with this.
Also made 2 extra circuits in it with a few buttons and relays. The one on the top left is for switching between low power (Drive Eco), high power (Drive Sport) and Reverse. And the one in the middle is for starting and stopping the charge process when the charge plug is connected. I might still get an actuator for this so the charge plug will get locked with this circuit while charging.
Also have another new tachometer, this time one from Hong Kong for 10 euros. And third time's the charm, this one works perfectly.
For the rest I've still been busy with the corner profiles on the side of the covers. Have to make quite a lot of cutouts in them for the cable glands and bolts. So this'll still take me a while. But for this battery box they're all done, still 3 to go.
Posted on 5 June 2014 at 10:22 pm (CET)
The corner profiles for the rear of the battery boxes are done. Now I still have to work on the ones for the front/cover but that'll take some more effort since I have to cut a few parts out for the cable glands and bolts.
I also bought some extra enclosures to place some other high voltage parts in. Bit easier than making something myself again. The DC-DC converter, sensor for the volt/amp meter and the main fuse will come in this large one. It'll be placed where the gastank used to be. It really fits perfectly, took a good guess for the sizes. It only wasn't available in black so it still has to be sprayed.
And this smaller one is for splitting up the high voltage cables to the DC-DC converter and charger and for both a seperate fuse. It'll be placed where the 12V battery used to be. It fits nicely as well and there's still enough space for the big orange cables which will run to the motor.
Then I also still have this one for some 12V things (main board for the Battery Management System and a few relais). Think I'll just place this one on top of the large enclosure, there's still some space for it.
Tomorrow and in the weekend I'll continue again with the corner profiles so these can hopefully get welded next week.
Some good news again today, the mounts for the top case and rear lights are done. They're really nice looking again thanks to Geraets Metaalbewerking. It's always amazing to actually see something like this made from a drawing. Here are all the parts together.
Attaching them was a bit difficult, the mounts weren't the problem but ofcourse the Chinese welds again. Had to add quite a few rings again to get the mounts straight and make them fit. But it's not that bad, I think I just need to get some longer bolts now since the nuts are barely on there.
But eventually they were nicely attached to the frame.
And with the fender it just barely fits, it was meant to be this way but it was still pretty exciting if it would actually fit or not.
The lights and mounting plate for the top case attached. I thought I'd have to modify the rear light a bit so it could sit a bit lower but this is not necessary, fits just right with about 0,5 mm of clearance.
And then with the top case on there. Looks pretty nice, doesn't sit too high or too low. And also not too much to the rear which is usually the case with most of the top cases. It's also very firmly attached, if I try to move the top case the whole frame moves. So the mounts are definately strong enough as well.
Meanwhile I also modified an old power supply of a computer to be used as a 200W 12V converter. I can now easily use this to test some things sometimes. Much easier than having to charge that small 12V battery every time which is always empty again after 5 minutes.
I've also been busy modifiying the small battery box, but I'll probably show that tomorrow when it's done. This weekend I'll start on making those steel corner profiles to size.
Posted on 22 May 2014 at 10:46 pm (CET)
I've made some drawings again. These will probably be the last 2 aluminium parts that still have to be made. First is a mounting plate for all the gauges and switches. This will be mounted on the handlebar.
As usual I made a paper model of it to see how everything would fit.
It all fits pretty good, just the angle of the gauges isn't really that great. Would be better if the plate could be bent to an angle of about 20 degrees, would be looking straight at the gauges then when sitting on the quad bike. I modified the drawing a bit to make this possible. Also made some small changes to make it easier to route and added another hole for the hazard lights switch. The plate will be bent by about 20 degrees on that line in the middle.
To be able to measure a few more things I had to place the fenders again. So here's a nice picture of the whole quad bike. It's actually starting to look like something.
I just ran into a problem with the battery box that's in the front below the carbon fender. It barely doesn't fit and the box is being pushed against the steering shaft which isn't a good thing. So I'll have to modify this box a bit, make it beveled on one side. Because of this I also haven't been able to saw the steel corner profiles to size yet since they'll have to be different for this box as well.
Then there's still the other plate. This one's for the charge inlet and will be in the same spot where the gas filler cap once used to be. For this I needed all the sizes of the fender which is quite tricky since the lines aren't straight but bent just slightly. I had the idea of just sticking a piece of paper on it and then try to find the lines with a pencil, worked pretty well.
Now I could easily measure everything while drawing without having to take the whole fender with me.
I again made a paper model of it and it all fits perfectly, no modifications needed.
The charge inlet is new after some advice from Rebbl, this is a mode 3 type 2 (IEC 62196). It's the standard everywhere in Europe now for all electric vehicles. Last year or so I already bought a CEE inlet but meanwhile this won't be approved anymore at the RDW (our institute for road safety). So unfortunately I had no choice but to buy this one. But I'm quite happy with it now, it's much more solid, safer and also waterproof.
Also bought a new analog tachometer for a very cheap price. But unfortunately I can't get this one to work either. I was really sure it would work with this one since it normally gets connected to the alternator and also gets a pulse signal. But it doesn't do anything with the pulse signal that's coming from the controller. So I'll have to look for a solution again.