When they are tightened again, how much is getting all the way in?
The only way I can see involves measuring the pressure head with the engine running.Obviously at higher engine speeds there will be a higher pressure,so say we measure it at 3000 rpm. Run a T-piece off the rocker feed line with a clear hose coming off vertically.See how high the oil level rises in the clear hose.That will give you the pressure head on both rocker spindles. If you apply that pressure head to one spindle at a time,that should show how much oil each one consumes.
The only catch is that for a given pressure there will be more oil flow when the oil is hot.There is also less pressure in the return line with hot oil,so it should balance out. I would test the pressure head with the engine cold,then do the consumption test with cold oil.
I'm of the opinion that the pressure to lift the oil to the rockers is so low that it is little more than drip feed. I,ve got the 500 that had the extended forks I was talking about, at my shop now. I'll experiment with the feed tomrrow and get back.
Re: How to improve oil flow to T100 rocker boxes?
#326120 08/02/107:28 pm08/02/107:28 pm
I went for a 35 km run at 60+ mph yesterday and when I got home I removed the rocker caps. BTW, I have those tall, optional hex caps with the deep internal cavity within the cap. All four caps all oil splashed about on the inside, and all four rockers had some oil sheen. One cap had a lot more oil than the other three.
Yep, standard oil tank. You won't see any chopper parts on the bike while I own it.
The rocker arms and spindles all have some oil sheen, at least as seen through the top caps. Perhaps I'll open up the side rocker caps and have a look. I replaced one of the spindles last year as it was very loose (the other was fine - within spec), so I don't want to wreck the replacement.
Went for a good run this weekend. Took off the rocker box caps and could clearly see a collection of fresh oil at the end of each spindle at the outside edge of the spindle. Since the oil starts at the centre top of the spindle, I assume the oil is making its way along the spindle, and then drops down to the push rod tubes.