12-22-2021, 05:57 PM
Two weeks ago i installed the last pr3 in nz on my front wheel, took it to the testing station and it passed the warrant of fitness test.
Yesterday took it for a ride and noticed a distinct bounce in the bike which correlated with the tire rotation, worst at 50 km/h and also at 80 km/h but a bit less so at that speed; had to be the new front tire.
I looked at it and the small ridge close to the rim was uneven and closer to the rim where the valve was ( where the bead had popped on initially ).
Then i removed the wheel, checked for roundness and yes, there was a distinct low spot near the valve area.
Broke both beads, re-inflated the tire until both beads set and checked again; still there and in the same place!
Had a think for a while and broke the beads again but decided to put tire soap on the rim, the white stuff mixed with water especially made for this purpose and position the bead setting part of the bike opposite the valve area where it would pop on the rim as the pressure increased.
So the tire was nicely greased up and inflated again, this time the bead set with LESS pressure and the tire was now centered perfectly on the rim, balanced again and checked that it was now perfectly round as it should.
Moral of the story; i initially used a soapy spray bottle to seat the tire but the tire mounting lube ( the white stuff ) was a much better choice for the job since it allowed the bead to slap in place with a lot less friction due to the lube.
Thought i would let you know about my small saga and how to avoid it if it happened to you since the best way to learn is from someone else's mistakes, all the best for the season
Yesterday took it for a ride and noticed a distinct bounce in the bike which correlated with the tire rotation, worst at 50 km/h and also at 80 km/h but a bit less so at that speed; had to be the new front tire.
I looked at it and the small ridge close to the rim was uneven and closer to the rim where the valve was ( where the bead had popped on initially ).
Then i removed the wheel, checked for roundness and yes, there was a distinct low spot near the valve area.
Broke both beads, re-inflated the tire until both beads set and checked again; still there and in the same place!
Had a think for a while and broke the beads again but decided to put tire soap on the rim, the white stuff mixed with water especially made for this purpose and position the bead setting part of the bike opposite the valve area where it would pop on the rim as the pressure increased.
So the tire was nicely greased up and inflated again, this time the bead set with LESS pressure and the tire was now centered perfectly on the rim, balanced again and checked that it was now perfectly round as it should.
Moral of the story; i initially used a soapy spray bottle to seat the tire but the tire mounting lube ( the white stuff ) was a much better choice for the job since it allowed the bead to slap in place with a lot less friction due to the lube.
Thought i would let you know about my small saga and how to avoid it if it happened to you since the best way to learn is from someone else's mistakes, all the best for the season