lionsandtigers Posted December 1, 2006 Report Share Posted December 1, 2006 So i retapped the tube hole on my twbest classic sub, and that went off without a hitch, the new tube screwed in nice and smooth, no problems at all. the problem is that the new tube is not sitting flush to the case, therefor when the crown is screwed down all the way, there is space btw the crown and the case. also because of this, i am having trouble screwing the crown back in without it changing the date, its not hitting that final stage to screw in, just the time change and the date change. i assume i have to remove a little material from the case itself in order for the crown to sit flush against it, but i dont know how to do this. any help? Link to comment Share on other sites More sharing options...
Sherrington Posted December 1, 2006 Report Share Posted December 1, 2006 You need to countersink the hole with a cobalt drill but be careful you don't overdo it. If you use a drill a similar diameter as the tube you will be OK. Link to comment Share on other sites More sharing options...
lionsandtigers Posted December 1, 2006 Author Report Share Posted December 1, 2006 any idea what size exactly for the cobalt bit to countersink with? Link to comment Share on other sites More sharing options...
RWG Technical Posted December 1, 2006 Report Share Posted December 1, 2006 All that and more was already covered in detail here in this post... How-To Install Rolex crown... RG Link to comment Share on other sites More sharing options...
lionsandtigers Posted December 1, 2006 Author Report Share Posted December 1, 2006 thanks zig, i actually had your post open while i was doing it, but i need to buy the bit for countersinking and i need to know the exact size, i dont know what a #10 bit size is Link to comment Share on other sites More sharing options...
HauteHippie Posted December 1, 2006 Report Share Posted December 1, 2006 thanks zig, i actually had your post open while i was doing it, but i need to buy the bit for countersinking and i need to know the exact size, i dont know what a #10 bit size is Info: http://bobmay.astronomy.net/misc/drillchart.htm Bit: http://hectorshardware.com/308722.html Link to comment Share on other sites More sharing options...
lionsandtigers Posted December 1, 2006 Author Report Share Posted December 1, 2006 thanks chief Link to comment Share on other sites More sharing options...
vaccum Posted December 1, 2006 Report Share Posted December 1, 2006 thanks zig, i actually had your post open while i was doing it, but i need to buy the bit for countersinking and i need to know the exact size, i dont know what a #10 bit size is Size 10 = 0.1935" = 4.9mm Cheers, vaccum Link to comment Share on other sites More sharing options...
vaccum Posted December 1, 2006 Report Share Posted December 1, 2006 Info: http://bobmay.astronomy.net/misc/drillchart.htm Bit: http://hectorshardware.com/308722.html I just didn't saw your reply. vaccum Link to comment Share on other sites More sharing options...
alligoat Posted December 2, 2006 Report Share Posted December 2, 2006 So for the rest of us, a 3/16th or a 13/64 would probably do the trick. Link to comment Share on other sites More sharing options...
FlipLockBuckle Posted December 12, 2006 Report Share Posted December 12, 2006 (edited) Hi there, I'm facing the same problem with the tube-hole. My tube hole is not centered, so i'm not sure if i can just contersink it to make my gen tube fit. What happens if i countersink it anyways, so that the hole will "overlap" the bottom of the case....will the water resistance be put in jeopardy, or will it be just a cosmetic issue? Edited December 12, 2006 by FlipLockBuckle Link to comment Share on other sites More sharing options...
vaccum Posted December 13, 2006 Report Share Posted December 13, 2006 Hi there, I'm facing the same problem with the tube-hole. My tube hole is not centered, so i'm not sure if i can just contersink it to make my gen tube fit. What happens if i countersink it anyways, so that the hole will "overlap" the bottom of the case....will the water resistance be put in jeopardy, or will it be just a cosmetic issue? If you decide to countersink the hole and live with the overhang, you neet to apply water resistant glue (G-S Hypo cement is a good choice). vaccum Link to comment Share on other sites More sharing options...
FlipLockBuckle Posted December 13, 2006 Report Share Posted December 13, 2006 If you decide to countersink the hole and live with the overhang, you neet to apply water resistant glue (G-S Hypo cement is a good choice). vaccum Hey, As I have alreadey spent a sh*t load of money on a gen tube+crown i definetly will countersink the hole and live with the overhang. In your answer you told me that...if I choose this way I will have to apply water resistant glue. But where exactly do I apply the glue to???? To the hole before I screw-in the gen tube...or just to the "overhang"-area??? Thanx Link to comment Share on other sites More sharing options...
vaccum Posted December 13, 2006 Report Share Posted December 13, 2006 You need to apply an even coat of the glue to the crown crown tube threads and the screw it in. Let it set and proceed to instal the crown. vaccum Link to comment Share on other sites More sharing options...
vaccum Posted December 13, 2006 Report Share Posted December 13, 2006 @ LT How turn out the CT install ? Did you where able to countersink the hole without any problems? vaccum Link to comment Share on other sites More sharing options...
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