johndunoon wrote:
Use a chrome "dome" nut instead of an ordinary nut and it will look great and not catch on anything.
That was the first thing I tried (we call them acorn nuts in the U.S.). The problem is, hmm how to explain this.
The two rubber bumpers together are say 30mm thick. I need to compress them down to say 20mm (I'm making up these round numbers for illustration). Obviously I need to start with a screw that is more than 30mm long because otherwise it won't fit all the way through to provide something at the other end to attach a nut to. So I stick in a 35mm screw, attach my nut, and start cranking down. If I use an Acorn nut, I start tightening and after 3mm the nut bottoms out. I still have 7mm to go and no way to get there. Which is why I abandoned that idea, using a regular nut with an ugly (and
dangerous, if someone were to use this modification and then mount a peg in a
lower hole with a screw pointing straight into the ankle while driving) screw sticking out. The best I can come up with is, once you have it just the way you want it (by actually trying it on the scooter and tweaking the nut position to adjust the amount of "mush"), do one of the following:
1. saw off the remaining screw shaft, leaving several millimeters of thread beyond the nut, and attach an acorn nut in addition to the regular nut (simply as decoration); or
2. saw off the remaining shaft right at the nut, and somehow put the entire thing in a vise under compression. Remove the nut and replace it with an acorn nut. I see lots of potentials gotchas with this idea, for example you'll likely need to file down the sawed-off edge of the screw in order to get the nut to thread onto the cut-off portion and you are not going to have much room to work with; or
3. discover that tucked in under the peg nobody can even see it and figure it's good enough as it is.
If somebody has an alternate way of doing this please opine. Your constraints are that the initial compression must be via the screw, not external (because externally compressing the bumpers say in a vise will collapse the bumpers' through-hole and make it difficult to subsequently run the screw through), and the screw head must be buried inside the outermost bumper's blind hole (to keep the screw head from contacting and damaging the scooter's bodywork).