Seeing as how this thread has been resurrected I thought I would add my latest version of a home-made oiler I installed on my DR650 for those that might be interested. This time I used a cheap oil can I purchased at my local Princess Auto.
I still used parts of an IV dripper and attached the oiler to the frame with a stainless hose clamp.
This time I decided to try a delivery closer to the rear sprocket so I made up some brackets and ran a length of copper tubing along the swing-arm with the oil dripping on to the chain just ahead of the sprocket.
I will be replacing the squeeze bottle on the TW with one of these oil cans sometime this winter. It holds more oil and it is easier to use while on the move. I just reach down every now and then and give it a few pumps.
I suppose I could have purchased an aftermarket oiler but I like to "tinker" and enjoy the satisfaction of doing my own thing. Maybe I just watched one to many episodes of MacGyver.
One thing I have noticed is the rear delivery is wee bit messier than the front delivery that I have on the TW and V-Strom. Any excess oil is captured by the front sprocket cover. It probably wouldn't make much difference on the DR with the case saver I installed in place of the sprocket cover besides it's a dirt bike and nothing a little soap and water won't wash off.
So like I said before give it a try. These things cost next to nothing to make and work great.