Tyre fitting and Repairs, One Rim-Lock or two?

[shelpi]

I only ever run 1 rim lock on both front and back. As others have said, 2 rim locks are a pain in the proverbial if you get a flat on a trail ride. Actually, it's even a hassle in the shed! Touch wood, I've never had a tyre move enough to rip out the valve. I have had tyres spin a little after a good days ride occasionally, then it's just a matter of deflating the tyre and moving it back so the valve is straight again.

I also drill out the valve hole a little bigger. Not only does it give the valve a little more room to move, but it's also easier to get the valve back in at tyre change time. And has been said, running the valve loose by using the lock nut under the valve cap is a good idea, along with a metal valve remover cap on the front valve....Ya never know when you need a valve remover. I even run one on my VMX bikes.

yep thats me favourate combo since the old Motocross days but stupid here is still putting the 2 in
hmm will review that one

[smed]

One rim lock for me,Two is too much like hard work , Ya gotta get one of these MickyD they save a lot of grief, most bike shops should be able to get em, there are various brands not just this one https://www.youtube.com/watch?v=OMMsMIH5ads

[pokey]

 Sure in most cases you can get away with a single  rimlock or even none in some cases.
 It depends on the tyre, the inflated pressure and the terrain and a combination of all three.
if your going to be riding some rocky stuff or very hard ground the back wheel is going to spin and then grip. This means something is going to slip a bit.That would be the tyre on the rim. Do it all day and you will have the wobbly stem disease that viagra wont fix.
if the tyre pressure is low then it wont grip the rim as tight as a higher inflation.
 soft tyres as easy to fit and easier to slip in the rim.

Assess the terrain
Assess your tyre
Assess your pressures.

Its not that much harder really to change a tyre with two locks than a single. I run two  as i hate working on a bike in the middle of the forest. Its usually find the hole and out with the can of whipped cream to see the day out. Its messy but its fast and easy so i can get back on the bike and home to do the job properly.

[FourstrokeForever]

I used to ride in the rock gardens that are also known as Nowra in the south of Sydney and Watagans
to the north.
As I said, I've only ever run 1 rim lock and I've never had an issue with any tyre (hard, soft or otherwise) spinning on the rim enough to rip out the valve.
And I always carry a spare tube and tyre levers with me on a trail ride, along with the rest of my trail tools. I'd hate to drive for 2 hours to go for an all day ride only to get a flat in the first hour and ruin my entire day because A, I didn't have a tube, and B, because i couldn't be bothered fixing a flat tyre.
Enduro riders fix things on the spot.....MXers go back to the pits and get someone else to fix the problem