er...helllp!
I've recently used Stan's kit to convert a pair of 4.2 rims to run tubeless, but after 2 or 3 weeks with no problems, the tyres now keep deflating overnight - can anyone offer a sensible explanation, and/or advice on how to fix 'em please? Anyone know if the 4.2's a bit of a bugger to convert using non-DT kit?
FWIW (apologies for any info overload), the rims are fairly new and still in good shape - no dings, gouges etc. The tyres are also relatively new Kenda Nevegal 2.1's (non-UST), that I'd used for about 100 miles with tubes. I used Stan's thin yellow tape, standard rimstrip and Stan's 'gloop'. I've converted 2 pair of wheels before, both which have old Nevegal 2.35 tyres - these are still running OK and loose very little air, even over 2 or 3 week period. Initial inflation of 4.2 & narrow Nevegal was far easier than my previous conversions - and there seemed to be less sidewall leaks, although lots of small leaks from beads. I eventually took 'em up to 50+ psi to seat the bead and this seemed to work (no bubbles on the washing up liquid test), and they held pressure for at least 2 weeks. Everything looked so promising, so can't understand why they're suddenly so leaky(?).
(I guess I should go out and do the inflate & soapy water test - but after 3 days consecutive riding & tyre pumping, followed by evenings of decorating - I'm too knackered to move from the keyboard.)
- and rear is the leakier of the two)
