Drilled Headtube for badge, any bad effects (stability of the headtube)?

Hello,

Some Bikes do have a riveted badge on their headtube. Does this effect the stability of the headtube?
Most bikes have a drilled headtube where the other tubes join the headtube, but doesn't have any effect on the headtube, because there are the top and down tube connected with brazzing or welding.
For any experience or ideas I would be very grateful
cheers

Most failures/cracks that occur near the headtube are on the lugs, or in some cases where the headset cups are installed.
If framebuilders used (and still use) to pierce the ht to fit badges I'm pretty sure they know what they are doing.

I was just wondering, because I never see colnago/ pinarello/ bianchi with a headtube badges...

Riveted badges were really common until the early 80s, Pinarello kept riveting until the mid 80s:

Colnago used rivets on his first models, here's a La Freccia badge, used from the late 50s through the late 60s

Uhh, this looks very nice. Didn't know Pinarello and Colnag had this badges!
So away from the badges, it's only a trend of the newer bikes?

Cielo and Moots still rivet their badges (not on the lightweight models)

I assume that they are not widely used anymore because decals are cheaper (and lighter), but if someone working in the industry has something better to say, please come in!

As with most products, fewer processes -> shorter manufacturing time -> lower manufacturing costs. Some will argue against the use of three or four components (badge + rivets) and additional processing of the head tube when a single self adhesive unit will be just as appropriate and not have the visual intrusion of fastenings. There may also be an issue with the clearance required for conventional rivets between the head tube inner and the steerer?

I suspect any weakness introduced by holes for rivets is so marginal that by the time it becomes a problem there will be other significant issues to deal with. However, the Moots badge looks to be screwed on - different game - and the thread root could act as a notch but then we'd have to do maths with k1c values and other incomprehensible shit.

Having said that I've spent unreasonable time making a snap and head tube dolly for rivets turned from aluminium bar to refit a Raleigh badge. Mrs.E. describes it as Engineering OCD ...
#notworkingintheindustry
#notworking

Nothing to worry about, if the holes were dead close together you may run a small risk of a crack but yeah, it's fine.