Gary Buster wrote:

Geez, isn't he still draining this thing uphill... isn't the drain the

clear

tubing??

I must be goin' blind or crazy... (or both)!!
Gary

Chuck uses an electric  scavenge pump to drain the gear box.
I think the small line is a vent line.

Paul Lamar

Before I get more memos, I'll explain what's going on. There is a pinion
(sun) gear oil spray system supplied by the new top fitting. Actually, I
now have 2 top fittings so that I spray oil onto all of the 4 planetary
gears (8 nozzles), plus the pinion. I do pump (scavenge) the oil from the
gbox because you need additional oil flow for higher hp, plus you don't
want the gbox full of oil (will make your seals leak, plus waste hp).

The plastic hose vent line was put on during ground testing to see if the
gbox was draining adequately. The outlet of the vent line is to the oil
fill tube (above the gbox). If the vent hose was filling with oil, then I
needed to restrict the incoming oil until it no longer showed oil in the
line. However, when the engine is cold (thick oil), the vent line will
fill, but after it warms up it should be empty. Don't put the vent line in
the top of the gbox, or you won't know if the gbox is full of oil. In my
Ross there were 2 drain lines with one being slightly abv the other. The
higher one is my vent line. I replaced the plastic line with high pressure
blue hose.

I also restricted the original Ross oil line coming into the planetary
area, so that it only goes to the front ball and roller bearings. I used an
.025" restrictor going into this area, and an .040" restrictor to the
pinion spray system. My elec scavenge pump is about 12 gph as I recall. The
vent line acts as a relief if the scavenge pump fails.

Hope this makes sense to you.

Chuck H

You have ball bearings in your Ross Chuck? Most only have needle bearings.
I have never seen one with ball bearings. Are you talking about the added
helical gear thrust bearing?

Paul Lamar

 
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