Second wheel lock questions

[forgiven]

I want to put a trials tire on and believe I will need a second wheel lock to keep my tubes intact.

Do you just drill a new hole for the valve stem in between the existing two holes now?

Any advice...I need to do this soon.

Thanks

[flybars]

I drill my hole opposite the other rimlock hole.

[swazi_matt]

Or you can fit Tubliss it acts as a 360 wheel lock. I have seen guys use it with bib mousse and trials tire for that reason

[gregorythomas]

I just did mine a few days ago. I installed a Pirelli MT43 and had it go flat twice in two rides. Both times the valve stem was ripped out from the tire spinning relative to the rim. I drilled my second hole close to the hole the valve stem goes through which is almost opposite the existing rim locker hole. After drilling the hole and installing new tube and MT43 I wish that I had drilled the hole 1 more spoke away from the stem hole. The way I have it, 2 spokes away, is too close to the stem hole so the rim locker pushes the valve stem a bit. I think 3 or 4 spokes away would be ideal. I was thinking putting it close minimises the movement of the tire relative to the stem.
Greg

[fury1]

another tip is to leave the nut off the valve stem or at least very loose so it can twist a bit if the tire slips a little,so it wont tear.