I've ruined the eyelet thread on my aluminium frame (Trek 8000 ZX series) on the sprocket side. There's no room to use a bolt+locking nut as suggested on other threads. I think I should to retap the eyelet, and I wish to make the repair myself.
but I'm not sure what tap to get, Sheldon satates that some of the information is obsolete. The eyelet was originally 5mm 0.8.
* Do you recommend I drill a non-metric hole (#9 or 13/64) and find a 6mm tap?
* Should the tap be of the 'taper' variety?
* Does anyone know of a small, affordable, and recommendable (electrician's?) tapping set suitable for 'everyday' use as well as bicycle maintenace.
* Finally, are there any special issues with tapping aluminium?
A million thanks in advance,