Remember that Yamaha? Yah, it's almost done... here are some pictures...
If you guys have any questions or comments, please, post em up, I'm waiting for my paint to cure and I need something to do in the meantime. Obviously there is no seat, and the tins are only laying on the bike. Seat is almost done, the taillight will be mounted onto that rear bar(not sitting on the tire) and taillamp mounted on the fender. But you get the idea of what it is going to look like. Still have wet sanding on tins, clear on the tins, and then curing. Ugh, hate waiting for paint... lemme know what you guys think...
Before:
God I know, how could I possibly improve upon that!? Don't hold it in, I know you love it!
Haha, but no, seriously, here is where it sits now:
I've got some recent questions about the single carb setup on this girl, and figured you'd guys probably dig the setup too, so here are some better pictures of that part of it...
Ok, roller her out and shot some pictures of the manifold. Here they are. Nothing complicated here.
Disregard the crappy joints. My welder blows, it makes sound welds, but it looks terrible, so there is high temp epoxy on the joints to make it look semi-presentable.
I really like the bike. It makes me want to ride it. Looks good with the tires too. I like the simplicity of te carb setup but it may give you some problems getting the cylinders synched. When are you planning on riding it down here?
Jon, surprisingly, this setup works as good as or better than the two carbs. Yes, this surprised me too. Here are my collection of theories, I'm not an engineer so I do not know the validity of these statements, but I do know that I have ridden this thing and it does preform like I mentioned above.
One: The carb that is on there is a 36mm straight bore Mikuni. A VM36 is what it's called. When that throttle is opened all the way, it is a straight through bore into that manifold. Trust me, this is a LOT of air for this bike.
Two: Cylinder consumption. This is kind of fun. The XS is a 360 crank, so only one cylinder is demanding fuel and air at one time. So here is what I came up with. Upon startup, kicking over the bike, it begins to fill the manifold with the fuel/air mixture until it reaches the intake tract where it is then sucked into the cylinder do to the dirty with the spark. So while the machine is running, my idea is that once one cylinder pulls in the required fuel and air mixture, the same volume of air is pulled through the carb to replace what was just sucked into the cylinder, thus having a fresh intake charge ready for the next cylinder. And so on and so forth. Now, cool part about this, the jetting changes very little since you are never needing to feed both cylinders at once. A little bit more fuel on the low speed, when the intake velocity is comparatively low, and that's it. As I mentioned, the power is fantastic. Nothing like breaking the tire loose on brand new shoes when the bike is in mock up stage with no tags. And it's smoooooooth, so smooth. The thing that I like the most, is that the power is RIGHT THERE, like right on the money whenever you want it.
Ok, that turned out a lot longer than I was expecting... but as far as the syncing goes, this actually makes it far easier to do so, since there...well is no syncing involved... Syncing two VM's is not fun at all. No vacuum fittings to fit carb gauges, so you have to do it by sight, sound, and feel. Eff that. That's why people have so many issues with putting the VM's on the XS's. It's almost more difficult for some people to tune a carb that has more adjustments because they can just screw up more. With this, one carb to jet. No syncing. You notice you're idle is too high or low because the temperature changed? Reach down and fix it. Low speed running a bit choppy? Reach down and change the mix, while riding, and keep going. Same with jetting. One carb, no syncing, and you can take the float bowl off when on the bike to do the work.
I'll try to get some video of it running. It sounds gnarly too with the single.
Oh and thanks for the comments guys. Can't wait till it's totally done.
