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I had a nightmare setting up Schwalbe marathon supremes on mavic rims last week. I say I, I mean Jesse at micycle and I had a nightmare. He did most of the work. Got them on, inflated up with compressor with sealant in and then everywhere it was leaking pushed/ pulled the tyre back and forth in the direction of the axle.
Isn’t opposite the valve normally the first part of the tyre that goes on?
stelfox
So, I'm having trouble setting up my first tubeless wheel from scratch (I have a pair that were set up for me on which I've changed the tyres without issue).
Kit is as follows:
I have done two wraps of tape, added sealant, and am trying to get the beads to seat. However hard I try one particular part of the bead (almost diametrically opposite to the valve) just won't stop leaking air. The closest I have gotten is about 30psi with little bubbles of sealant coming out. I've left it at this point but my current assumption is that it will continue to deflate.
Does anyone have any ideas to try? Having read up my thoughts are:
1) perhaps the tape is too wide and interfering with the bead. I've looked and can't see anything obvious, but is it an issue to use 25mm tape when DT Swiss note their inner rim width as 18mm? https://www.dtswiss.com/en/products/rims/road/performance/rr-411/
2) should I whack a tube in, leave for 24 hours, and try again?
3) is there something funny I've perhaps done with the bead when mounting the tyre? I used thumbs only (no levers), but the area it's not sealing is possibly the last bit of the bead that went on the rim
Typically I have been doing this on the same day that I got a whacking great hole in my cx tyres so it's tyre fun all night for me