Installing them took some doing. I had to get longer bolts because the Razor scooter wheels are a bit wider than Eazy Wheels:
- For the front bolts, you have to use metric bolts because the holes have metric threads.
- For the rear bolts, the holes are unthreaded. I couldn’t find 6 mm bolts at my local hardware store, so I bought 1/4″ bolts, which are just a wee larger than 6 mm bolts, which meant that I had to drill out the rear holes a smidge with a 1/4″ drill bit. I strongly recommend bolts made of grade 8 steel. I don’t know exactly what that means, I just know that ungraded bolts bent shortly after I installed them, presumably because of the greater length.

Oddly enough, you’re not the first person to suggest that I’m pleased with my Brompton.

Take care with the seatpost loading – my 4 year old titanium seatpost on my S2L-X failed today and has only ever had the deadweight of me (182lb) bearing down on it through the saddle It cracked about 1/2 inch down in the clamp area and the failure started on the front side. This smacks me as being consistent with the load trying to bend the top of the post towards the back of the bike. I only use it for less than 5 miles but four folds every day.

At first blush it seems like it could be useful, but then you start thinking about how much concentration it’d require to position your arm just right to get a good view of the cars behind you. I don’t want to take my eyes off the road for that long, especially not in traffic. For most uses, almost any mirror would be better, even mirrors mounted on handlebars, which I don’t much like, as you know.

Scott

http://practicalbiking.org/2012/01/how-to-stiffen-the-suspension-on-a-brompton-folding-bike.html/