thunderstorm80
1 kW
- Joined
- Mar 29, 2016
- Messages
- 383
Hi,
I have a touring bicycle, that has front+rear panniers, and H3525 motor powering the front wheel as assistance (and regen on descents).
I bought a 24mm wide alexrims from Grin (622x24) for the front motor, and mounted Schwalbe marathon touring tire, which is 700x45.
On the first pump, I was inflating to the max allowed pressure, and after just 1 minute after inflation I heard the tire coming out of the rim clincher (at one point, not the entire rim), and then there was explosion. The tube got torn at that point.
I am curious what was the cause?
The tube is rated for around 1.75inch wide, which could have been the reason? (combining a very wide rim).
Or is it the tire that failed to hold that pressure because of the very wide rim and the tube collapsed following it?
One of my assumptions is that if the tube failed first, then the huge pressure upon the tire, which is not tubeless (and way above tubeless pressures even if so), caused it to come out of the rim at the weak point and release the air as explosion. Makes sense?
Is 622x24 rim too wide for a 622x45 tire?
I replaced that tube with MTB tube of 1.9-2.3 and it looks fine, although it seems that at one point the tire is "bulging" out of the rim by few mm, and it could be normal. Or is it not ok? Should the tire be completely concentric with the rim, if I were to check if it's radial distance is changing during the rotation?
If you think that tire is too narrow, what tire would you recommend for long distance touring, that can allow a bit of off-road grip in case you go a little of the pavement?
I have a touring bicycle, that has front+rear panniers, and H3525 motor powering the front wheel as assistance (and regen on descents).
I bought a 24mm wide alexrims from Grin (622x24) for the front motor, and mounted Schwalbe marathon touring tire, which is 700x45.
On the first pump, I was inflating to the max allowed pressure, and after just 1 minute after inflation I heard the tire coming out of the rim clincher (at one point, not the entire rim), and then there was explosion. The tube got torn at that point.
I am curious what was the cause?
The tube is rated for around 1.75inch wide, which could have been the reason? (combining a very wide rim).
Or is it the tire that failed to hold that pressure because of the very wide rim and the tube collapsed following it?
One of my assumptions is that if the tube failed first, then the huge pressure upon the tire, which is not tubeless (and way above tubeless pressures even if so), caused it to come out of the rim at the weak point and release the air as explosion. Makes sense?
Is 622x24 rim too wide for a 622x45 tire?
I replaced that tube with MTB tube of 1.9-2.3 and it looks fine, although it seems that at one point the tire is "bulging" out of the rim by few mm, and it could be normal. Or is it not ok? Should the tire be completely concentric with the rim, if I were to check if it's radial distance is changing during the rotation?
If you think that tire is too narrow, what tire would you recommend for long distance touring, that can allow a bit of off-road grip in case you go a little of the pavement?