A series Sub project: Lug holes and spring bars?

[cht]

Ok,

since it seems like I'm going to have a watchmaker fix my euromariner since it missed qc, I am going to have them drill lug holes for it.

But, before the ase is drilled, I just want to verify my info is correct!

So I was at a AD and saw a no date sub and the holes in the case looked small.

Like the same 1mm as my v3 case. The AD guy says they are different on various models and has no idea.

So, my research is suggesting a 1.3mm hole in the case.

Is this correct?

This would fit gen spring bars.

However, the AD doen't know which bars are for the lug holed subs.

My research shows a 2.0 mm thick bar with a 1.2mm tapered end.

Is this correct?

And, are these shoulderLESS spring bars?

Like these ones?

http://cgi.ebay.com/SPRING-BAR-FOR-ROLEX-S...A2%7C240%3A1318

and would these 2.00mm thick bars fit the noob bracelet?

thanks so much!

regards,

[cht]

So do the subs get smaller holes than the sea dwellers?

here is the v3

(notice the wrong position.)

gen for comparison

another gen a series

and here is a case drilled by freddy with the 1.3mm. ( i know it's not a sub, but just for reference on the hole size)

is it me or does it look a little too big?

here is tribals beautiful franken sub.

I am assuming these are 1.3mm as well. Is this correct?

Do these appear larger than the gen as well?

I'm confused.

thanks guys!

Edited November 29, 2008 by cht

[cht]

anyone just want to comment maybe on the lug hole size than?

Are we seeing the same thing?

[polexpete]

Hey Chris,

1.2mm is the correct size drill to use for springbar holes....

Cheers

P.

[Tribal]

Hey Chris,

1.2mm is the correct size drill to use for springbar holes....

Cheers

P.

I agree 1,2mm is the correct size....

Sometimes the holes look visible larger on Pics.......

[cht]

Thanks Tribal and Pete!

Wow, amazing how .1mm is visibly discernible!

I would assume that the reason everyone drills them to 1.3mm with the #55 cobalt is because the #56 is 1.18mm and is too small.

Would there be any other drill bit options, (other than cobalt) since I am just making the existing holes bigger and may not require such a strong bit?

[Dizzy]

i drilled mine to 1.5mm to make them look super worn out

the the springbars are nice and loose... but.. on a newer model with less wear i agree with the guys 1.2 and you can even get away with 1.3mm if you have to.

[alligoat]

I used the #55- 1.3mm drill bit on my V3 and in a side by side comparison with my gen 16800, I can't tell the difference in the size of the lugholes.

The biggest problem I had was that in drilling the holes, the metal of the case pooches up on the outside and then you have try to polish it down or slightly chamfer the holes with a slightly larger drill bit- but you have to be careful not to get the holes too big!

The lughole position on the case worked out just fine for the set of gen 501B end pieces that I used with the oyster bracelet. I just wish I could get a hold of another rep 93150 bracelet with hollow mid links. I keep hoping MBW will come out with some and that Chris at Eurotimez gets back on track, because I love to order a few.