Decided to try those Eclipse tubes, as Merlin had them at a good price and I trust their customer service if it went wrong… I picked up a pair of the biggest ones for the dh bike. What happened next…
First of all, one of them was faulty from new, it’s got a 90 degree “twist” in it as the seams have been laid up wrong. Merlin to their credit said try it, if it’s ever a problem let them know.
So, fitted them- the bike was in bits getting a new frame so they didn’t get ridden for a month. Went back to fit the wheels, the other (non-faulty) one had flatted, unridden! Checked it over and it’s burst at a seam.
The other one’s had a few fort william runs in the back of the bike and has been fine, so that’s encouraging…
Reason I post today is that when I contacted Merlin to return the flat one, they basically gave a long-suffering sigh and said “They’ll do that- we’ve stopped selling them because of all the warranty claims”.
So- too good to be true I guess. Not at all shocked, and glad I went with a good shop for the backup. But interesting thing to try and I’m sticking with the other one for now.