Originally Posted by
tomtomtom123
Actually it's an online CNC factory that gives an instant quote of around $15. So I'm thinking if I should future proof it to clear disc brake caliper mounting bolts, by adding standoffs, if I swap frames to the Dahon Launch. But without anything to reference measurements with, I will probably keep the strut flat. The launch also seems to have the caliper far back so maybe no contact with the struts.
Why did Tern use 6.2mm holes for the M5 eyelets on the dropout flange? Are there frames that have M6 eyelets? I'm thinking of reducing the hole to 5.2mm to improve stability of the rack.
The weak point is the hole just below where it clears the C shape profile, but the holes are 10mm intervals and that's just 2 holes apart, so if I want to keep it adjustable, there is always a hole at the point.
I have to carry everything with me, so I don't have any power tools. I only have small portable hand tools, at least enough to rebuild a bike. So that's why I'm looking at the online CNC/laser services.
Yes, some rare frames and racks do use 6mm bolts, I've seen them in the forum, don't own one.
I don't know where you are, but a low-cost resource for parts can be a local high school (highest level primary school, in some languages) with a metal shop, especially vocational metals. A high school was a great resource for me for a truck repair that didn't need to be quick, they told me where to get the parts wholesale price, and did the labor for about 1/3 what anyone else would charge, and the money went toward the class dragrace car.