So, I switched to tubeless only a few months ago, making this the first winter with tubeless. I've been a little surprised at my results. In some cases, I can remove a little thorn and expect to see it sealed quickly. Other times, a very small, pinprick hole leaks and leaks until there is a nice puddle of sealant on the ground. I converted initially using Orange original but now top off with Orange Endurance, as I got a great deal on a large bottle of it. My topping off is done through the valve stem. I use these bottles with these large dispensing needles to add through the valve stem-- no need to break the seal.
So, my questions:
- I understand that Endurance does not have quite the sealing power of original, being designed to require less-frequent refills rather than optimizing sealing ability. A part of this is the little grits 'n bits that are added to stop up holes and give the sealant a point to adhere to. What have you tried that is effective at this? I've heard quite a variety of ideas-- fine sand, fine- and course-ground pepper, glitter, even the hairs shaved from one person's face. What actually works for you?
- How much of my recent failure-to-seal could be attributed to cold or to tire pressure? Due to drastic temperature changes and time since inflating, my tire pressure was probably about 18PSI, down from my normal 32PSI. It was about 36°F. I removed a very small thorn, leaving a tiny hole that leaked without sealing at all. This went on for several minutes. In the end, I added more sealant and pumped up the tire to 32PSI. This quickly resolved the problem. However, the tire had a full dose of sealant already, and more was being actively expelled when the hole was facing down, so it doesn't seem to be a question of quantity of sealant. Was it the cold, the (counterintuitive) lack of pressure, or absence of the gritty stuff? I know you can't definitively answer based on the information here; I'm just looking for the thoughts and experience of those that have been riding tubeless longer than I.