| Hi All - thanks for the replies - afraid I hit a snag this morning - I filled the bath again and tried the sub again but couldn't totally get rid of the air leak - I tried various combinations of rubber bands and I was tempted to use some vaseline or similar - but decided to not use any grease until I heard from you experts... anyway after about six attempts I managed to strip the thread on the front of the tray....... so I decided that I would do what I heard of a few months ago and fit a larger sized bolt with a washer and wingnut, and do away with the long rod. I've managed to get the old bolt out by drilling a series of 1mm holes along the length of it then using a craft knife to saw through the lot. I've got a new bolt setting now in the gap so I'm on dry land again until I've finished all the glueing. While I've got the thing in bits again I've been checking to make sure that the tray goes in evenly into the WTC - it does because without the gasket the tray goes up to the front of the sub and the rear bung (with the tail section on) fits snug up to the WTC. When I get seaworthy again I'll just have to detach the bow section top to tighten the wing nut but that doesn't take too long (I'm a flippin' expert at that bit by now) and I did fit an on/off outer rod at the tail section so I'll put the battery in, tighten everything down at home and then switch the RX on when I get to the club pond. Anyway I've got Vaseline and Silicon grease so I'll give one of those a try - I'm relieved to hear that you guys use it as well, 'cos this means that it isn't as simple as Robbe make it sound to get the seal watertight. In the instructions they do say to make sure that there isn't an air leak but they don't suggest what to do if there is one..... I really do appreciate all your comments guys and I'll give you a report as soon as I get in the test tank again.
Thanks a lot.
Ian |