Re: how to lengthen steerer tube on a bicycle
Welcome: another thing one should know in the bottom of the frok the is a second tube (renforcement) so the cut should be made midway otherwise the sleve ( one should measuer that first) will not fit good.
If you ever bend one or seen one bent,they bend just above the inner tube or just above the bottom bearing. If you incorperate the sleve down to the inter tube you will have a much stronger fork.
All i ever used was another piece of fork tube and split it length wise about 18"and squeze it together and slip it inside for a sleve. 7/8" drill bit cleans the inside if needed,and a 3/4" drill bit will clean the renforsment tube if needed.