Gearbox Pressure Build Up?

[Raysboostin]

The reply from Redline gave me links to these two:

Bulletin115 Shockproof Climbing.pdf

Bulletin116 Shockproof myths.pdf

Very interesting reading and explanations.

i just thought id point something out here. in the pdf it says the cause of the spewing out the breather is "meniscus" and they are so wrong that its a joke!! meniscus (according to wiki and I remember this from those science class experiments) is the curve in the upper surface of a liquid close to the surface of the container or another object (in our case the outer case of the gearbox), caused by surface tension.

what they are actually implying is that "capillary action" is acting on the meniscus and pulling the oil out the breather. if this were really the case it would do it under all conditions not just driving for long periods. even if this was the cause, capillary action alone could not make the oil leave the breather especially in large quantities.

judging by the pic posted earlier, id say the shockproof oil is foaming up like dishwashing liquid and pushing the oil out. shame on redline for thier flimsy excuse!!