How Do You Tension a Brooks? The Bolt Spins With the Nut.

The Brooks tensioning mechanism can be a little confusing. Basically, if you are facing the saddle, you turn the nut clockwise. Your goal is more thread in front of the nut.

But - calling the tension pin a 'bolt' is a little misleading. (I have been guilty of this.) The pin doesn't  bolt anything together. It is a threaded shaft and the only thing that threads onto it is the nut. The tension pin rests in the cup of the 'nosepiece' on the head end and the nut pushes against the 'tension shackle' on the other end.

There is nothing anchoring the pin in the nosepiece. If the tension gets too loose the pin will spin with the nut. The only thing to do is hold onto the pin some way while you tighten the nut. Sometimes a finger on the pin will be sufficient, sometimes it will take pliers. When there is sufficient pressure against the shackle then the pin should hold.

Ti-railed saddles hava an allen-head pin that makes the job much easier. A long time ago Brooks put wrenchable pins in the saddles but, I'm told, they had problems with riders tightening their saddles too much and making warranty claims. That's why tensioning is a little difficult.

Loose tension mechanisms are the main cause of broken tension pins and squeaking saddles. It is important to maintain the tension on a leather saddle.