I have an older 10spd bike that I'm working on and it has crappy side pull brakes, I'd like to upgrade to some VBrakes like these:

http://www.pricepoint.com/images/styleImages/D_040%20AVDSD6.jpg

Now, I know that I need to weld on some spots to mount these because the old brakes mount with a single bolt at the top center. What can I weld on though? Can you buy the mounting tabs and weld them on, or will I just have to weld some sort of tube on? Any help would be appreciated.

Maybe these would mount without modification?

http://www.pricepoint.com/detail/12517-040_SHIUC8-3-Parts-159-Brakes/VBrakes/Shimano-Ultegra-6500-Brake-Calipers.htm

http://www.novacycles.com/catalog/product_info.php?cPath=61_137_141&products_id=780

Keep in mind that the forks may not have the correct structure to be stiff enough for the U brake forces if all the previous loads were in the crown. Also the fork migh conceivably be too light in wall for welding.

Good to keep in mind. I think I will probably go with the second link I put up, here is what they look like:

http://www.pricepoint.com/images/styleImages/Z_040%20SHIUC8.jpg

Way simpler!

Way simpler!

Well yeah. It should be a direct bolt on right?