You need to buy the fitting kit separately if you do not have mounting eyelets on your fork.

You will need a fitting kit supplied by Tubus which provides mountings on your fork. I will link them below.

This rack fits both 26" and 700c tyres.

We can't confirm this without trying it but the Specialized Tricross does have mounting points for front racks so there shouldn't be any issues with this.

A search online shows that other people have had the same problem and there doesn't seem to be a fix for it at this time. You will likely have to change the rack or fork. The Tara is a one peice design so perhaps you should try dual side frames instead due to the width of your fork. The Duo low rider looks like it may be suitable: http://www.wiggle.co.uk/p/cycle/7/Tubus_Duo_Lowrider_Front_Rack/5360025261/

Ok, to answer my own question, you don’t need it!

On the Ortlieb site there is a more detailed leaflet on the QL1 system. It includes instructions for rotating the round disc under the pannier bottom hook to increase the gap from 10 to 13mm and this is enough to secure the panniers to the Tara 14mm tube. My Ortlieb Front Roller Classic and now fitted and rock solid.

It will fit aslong as you have mounting holes on the front of your forks.

Yes you can fit this rack with mudguards and they are compatible with 26" and 700c wheels.

The functionality of the racks is the same but the Nova has a closed side frame for added adjustability and a brushed stainless steel finish for strength and exclusive looks.