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Added 3 photos to JMc007
Sep 27, 2014 at 13:20
Sep 27, 2014
phutphutend phutphutend's photo
Sep 23, 2014 at 14:32
Sep 23, 2014
It is indeed 8 mm, good guess! Water jet cutting is pretty standard, there's grit mixed in to aid with the cutting. Not sure what pressure it's at though.

Added 4 photos to JMc007
Sep 23, 2014 at 13:47
Sep 23, 2014
phutphutend DoyenUK's photo
Aug 30, 2014 at 5:27
Aug 30, 2014
Have you seen these: http://simplybearings.co.uk/shop/p155050/FR8ZZ+Metal+Shielded+Flanged+Deep+Groove+Ball+Bearing+1/2x1-1/8x5/16+inch/product_info.html I'm going to use these for my next project.

phutphutend mikelevy's article
Jul 21, 2014 at 9:38
Jul 21, 2014
Xprezo Adhoc - Review
Exactly, "common on older road frames that have been ridden day after days for years". Everything fails eventually, but steel will be there the longest.
phutphutend mikelevy's article
Jul 21, 2014 at 7:43
Jul 21, 2014
Xprezo Adhoc - Review
With 953 you've hit the nail on the head with why Steel doesn't sell. As a frame choice material, it is equal if not better than ally, carbon and titanium. With the correct design it can be equally as light. It is longer lasting. But it doesn't lend itself to cheap manufacturing, especially with the complex shapes needed for a full sus. 953 takes that complexity of manufacture even higher. A well designed steel frame, designed for manufacture will be as simple as possible. All straight lines and no complex maching. This is harder to sell than swoopy carbon, or complex machined aluminium linkages. Xprezo have a made a great bike. The negative talked about in the review are a consquence of the design, NOT the frame material. But, people make simple conections in their heads. Steel is heavy is easier to make than the complexities of the design are not correct.
phutphutend mikelevy's article
Jul 21, 2014 at 6:01
Jul 21, 2014
Xprezo Adhoc - Review
It sould have been done with ally. But steel is much more damage tolerant. Also, it doesn't really suffer from fatigue. So for a small gain in weight, not a lot if you design a steel bike correctly, you get a much longer lifetime. My frame weighs 6lbs, and it is only the first iteration. As I refine the design it will get lighter.
phutphutend mikelevy's article
Jul 21, 2014 at 5:04
Jul 21, 2014
Xprezo Adhoc - Review
Does it say heavy anywhere?
phutphutend mikelevy's article
Jul 21, 2014 at 5:00
Jul 21, 2014
Xprezo Adhoc - Review
Except here... www.pinkbike.com/photo/10520089
phutphutend mikelevy's article
Jul 21, 2014 at 4:46
Jul 21, 2014
Xprezo Adhoc - Review
Carbon may well allow you to make a slightly lighter bike. But it certainly won't last as long as a steel frame. Not only can't it take a fair amount of punishment, but if it ewre to fail, any good framebuilder can get it back to scratch for a reasonable cost. With a good bit of design, steel bikes aren't far off in weight terms anyway....
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