In reply to Misha:
> Single axle cams are generally shit.
Normally your arguments are sensible and well argued, but I reckon you're completely wrong on that.
> They tend to get stuck irretrievably,
What!? Any cam badly placed can get stuck, but it doesn't seem to happen very often - the only jammed cam I've seen recently is a camalot (on Trapeze at Froggatt if anyone with mad cam-removal skills wants to do a public service). The only cam of mine that got stuck and we couldn't get out in the last 28 years of using them was a Dragon, and that's because the attachment of the stem-cap to the axle mounting failed so you couldn't push it - the stem just moved through the head.
True, but were also noticeably lighter, I can't remember exactly anymore but I did work it out once. With DMM 4CU it was something like 8 of them weighed the same as 6 Camalots of the same era, covered the same range of sizes and of course gave you two extra potential runners.
> just feel rubbish to use.
Eye of the beholder, so may be true for you but not necessarily for others.
> There’s a reason WC and DMM have followed BD in using double axles.
Yep, and beardy Mike who designed the new twin axle friends has told us what the reason was for WC - fashion change and no one was buying single stem Friends anymore. It wasn't that they thought twin axles were a superior design.