Drilling and tapping an aluminium frame for a second water bottle cage

[BigonaBianchi]

I want to fit a second water bottle on my aluminium frame....Im guessing its a bike shop job ...do they even do that?

 

[GrumpyGregry]

Zefal Gizmo may be your friend.

 

[doog]

edit...perhaps not what you need

 

[biggs682]

brave man to start drilling holes

 

[cyberknight]

Zefal Gizmo may be your friend.

Beat me to it,plenty of stuff out there to mount a bottle cage without drilling.

 

[TheDoctor]

It's one of those things - if you know how to add bottle cage bosses to a frame you wouldn't be asking.
If you don't know, then you shouldn't be doing it!!
And you won't be needing a tap. Definitely not.
You need rivnuts.

 

[slowmotion]

I would get one of those clip/strap-on jobbies. My guess is that the wall thickness of the tube isn't great enough to provide a simple tapped hole that's reliable for a screw. If you need to add a press-fit bush insert it means drilling a much bigger hole...not a good idea if you want to avoid stress concentrations in thin wall tube.

Just guessing.

 

[BigonaBianchi]

ok..a strap on it is then

 

[TheDoctor]

Good call