Thread: Second Air beadlocks - which valve?!

Originally Posted by McDisco

Hey All

I recently bought a set of Simex Extremes that came fitted with Second Air beadlocks. The guy I bought them off did tell me but I have forgotten which one is the tyre and which one is the beadlock.

I have attached some pics. Can anyone give me some advice on which valve is which?

Cheers

Angus

hum, hard to tell you will have to try to bag the tyres to see, if you go down to about 12 psi you should see, i have had my tyres down to 9 with out them debeading. i dont think you will be able to tell with out bagging them, and after stamp them with a letter stamp. or ingrave beside the valve, you may want to find the max pressure of the bead aswell to put beside the valve, if you only drip it to 20 or so it wont be enoughf as when the bag is droped it will look as if the tyre is flat, giving yuo a false result, but the bag has less volume then the tyre, so you you need to fully deflate the tyre to see its bagged and not just the bag leting down and causing the tyre to loose pressure. ( eg the bag is depressurized and then the tyre pressure squishes the bag and leaves the tyre slightly lower pressure)

let us know how you go.

Cheers mate...some good suggestions there.

Angus

I used the original tirelocs, but I assume it is still the case with secondairs - the pressure in the tube that is used for the bead lock should always have higher pressure than in the tyre.

Use a tyre pressure gauge to check the pressures to see if there is a consistent difference (might only be 2 psi difference). Then you can confirm by letting some air out of the valve that you think is for the tire.

On mine the tyre valve is the bigger of the two, and it necks down to valve cap size. The bead lock one is the same size for it's full length.

I have different caps on each.

Tony

From my experience it looks to be the one on the right ! with the silver cap, I could be wrong but I would pump that one up to 50psi and then drop the other one and see if the tread side of the tyre deflates ?? if it does not reverse procedure !