TPU Inner Tubes

[m_sasso]

Ride Now started making TPU tubes with Al stems and removable valve cores.

[SlackMan]

Originally Posted by RoosterCogset

This is the dilemma, because at least some manufacturers seem to say that CO2 is bad for TPU. So, no CO2 means carrying a pump that won't kill me trying to get to 90psi. I have a mini-pump, but it really is for emergencies and only if I've already used the 1-2 cartridges I usually also carry. I don't particularly like the idea of getting a larger frame pump in order to be able to carry TPU tube(s). Seems self-defeating from a weight/bulk standpoint.

This is exactly what I do and exactly what I was thinking.

[Stuart]

Originally Posted by MikeD

Bulging may be caused by overinflation of the tube outside of the tire. These tubes are not very elastic and plasticly deform. I would just blow air into the tube by mouth to give it shape before mounting.

Well aware of that. And not how the issues happened. Location of the bulging was clearly evident after I removed them from the tyre. I didn't need to inflate them outside to see the thinned areas.