Okay, lets talk about crystals as a 5513 should have a Tropic 19 acrylic crystal. Unfortunately I don't have a gen 5513 to compare so I'm working off pictures on the internet. It looked like Sternkrauz and Clark's were the main ways to go and as Cousins here in the UK stock Sternkrauz, that was my first port of call.
I popped the crystal out and its 30.5mm and the Sternkrauz one is 30.5 so that seemed right. Now if I'd been clever I would have measured the case for as that is approx. 31.4mm and it it says that the gasket is 0.55m thick. So I ordered a 315 (31.5mm) gasket too. Okay I thought we needed a compression fit so it was going to work. NOPE, it was never going to go. I tried the original gasket but didn't want to go in cleanly and got damaged in the process. I did get it in once but it easily popped out again.
So in frustration I ordered a new 315 gasket, a 310 gasket (as the 315 seemed too big to me and stretching round the crystal may work), and a 30.5mm domed mineral crystal as it was cheap and looked might it may look better.
As I had time I also checked the Leosics site, John Shearing there has sold me movements, hands and lume in the past so I called him for advice. He said his Tropic 19 was 30.3mm. It was cheap as chips so I bought one of those as well.
All the crystals and gaskets turned up and I had a play with them. The 310 gasket just seemed to clip into the groove on top of the rehaut, which baffled me as it should be too small. The Leosics Tropic 19 fitted into the top of the gasket and with the press was in. It seemed too easy.
I popped it out and refitted it and it was spot on.
Then came the waterproof test, where it failed with water coming in and when warmed a steady stream of bubbles coming out of the gasket in just one location. I popped it apart, marking the protective film on the crystal where the bubbles were coming from. The gasket at this point had a dent in it, checking the case with the loupe, there was a bit of debris from the old gasket. Grrrr, I decided to leave it and come back to it later.
As it was the weekend I couldn't get a new gasket, so I decided to make sure it was all clean and use a tiny smear of silicon grease in the groove in the case, then once the gasket was located, inside the gasket. I used the loupe to make sure it was all even and then pressed the crystal home.
Then onto the (absolutely brilliant IMHO) Padd water pressure test. I use Charles Law to create a pressure difference both ways, to give me a few PSI to test my seals. So first, you warm the case up in the sun or on a radiator, screw in the crown, and take it to a bucket/bin/container of cold water. Plunge the case in and cool the case, as cold as possible, and let the air cool while watching the rehaut for signs of water ingress. Trust me if its leaking you will see the water come in.
The take the watch out, undo the crown, take it out, re-insert it then put it in the warm/hot water. The air will now expand and bubbles will escape, this will tell you where the leak is.
If you have got a perfect seal, you will not see any water going in and when you remove the crown you will hear air hiss in, and when you've done the warm water part, you will open the crown and hear the air psss out.
Anyway it passed!!
Now all I need to do is refit the bezel, then bolting a spare movement dial and hands in there I can wear it till the pukka dial turns up and its time to time to start shaping CGs (crown guards) and drilling the case for the Athaya 700 crown (gulp).
Crystal in place, bezel loosely in position
I think it looks cool now I'm used to it.
It sticks up quite high, but lots of people seem to love that look
No water ingress dunked in cold water
No bubbles in the hot sink
Looking good!
Quite a high dome