To All.
I have a WTC from Small World Models that uses O rings for seals. Somewhere in my setup I have a leak that I simply cannot find. And I'm not talking a few drops here, I'm talking about a teaspoon full after maybe 15 minutes. Should be easy to find, right? Well not by me.
Here's what I've done so far:
1) Rigged up an entry tube so that I can attach a hose to blow into the WTC and watch for bubbles. Only after I've blown real hard can I force bubbles out through one of the O rings. But I question the validity of this test as it's not a real world situation, I don't think. The pressure inside the WTC should be (is?) less than the surrounding water. Right?
2) Swapped out the small (ID=1/8") O rings around the servo shafts as well as the Oilite bearing. On this WTC the servo shafts are use rotationally not back and forth. Should I also seal the small O rings into their opening with silicone?
3) I've put electrical tape around the circumference of the WTC to try and stop water from even reaching the large O rings.
4) I've replaced the propeller shaft seal with a Merriman designed prop shaft seal.
5) Assembled the WTC so that only the rear portion is being tested. In doing so I've effectively eliminated over half of the seals as a source of the leak.
And yet, the flood continues. This is driving me CRAAZZEE! (my family would say it's not a drive but a putt).
Any ideas?
Dan
I have a WTC from Small World Models that uses O rings for seals. Somewhere in my setup I have a leak that I simply cannot find. And I'm not talking a few drops here, I'm talking about a teaspoon full after maybe 15 minutes. Should be easy to find, right? Well not by me.
Here's what I've done so far:
1) Rigged up an entry tube so that I can attach a hose to blow into the WTC and watch for bubbles. Only after I've blown real hard can I force bubbles out through one of the O rings. But I question the validity of this test as it's not a real world situation, I don't think. The pressure inside the WTC should be (is?) less than the surrounding water. Right?
2) Swapped out the small (ID=1/8") O rings around the servo shafts as well as the Oilite bearing. On this WTC the servo shafts are use rotationally not back and forth. Should I also seal the small O rings into their opening with silicone?
3) I've put electrical tape around the circumference of the WTC to try and stop water from even reaching the large O rings.
4) I've replaced the propeller shaft seal with a Merriman designed prop shaft seal.
5) Assembled the WTC so that only the rear portion is being tested. In doing so I've effectively eliminated over half of the seals as a source of the leak.
And yet, the flood continues. This is driving me CRAAZZEE! (my family would say it's not a drive but a putt).
Any ideas?
Dan
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