Improving braking? Pads/Brakes/Rims?

gtd. Posts: 626
edited July 2012 in The workshop
I have a 84 Motobecane Nomade with Weinmann side pull calipers and 27x1'1/4" chrome rims.

I changed from leather/rubber Sturmy Archer pads to modern Clarks CP305 pads but performance isn't great and they judder as I stop

What would improve the braking performance?

Different pads? Cartridges?
Dual Pivot calipers?
or do I need to change to alloy rims?

Some one did suggest clear BMX pads as they are grippy on chrome but also squeaky
Mountain: Orange Patriot FR, SubZero & Evo2LE.
Road: Tifosi Race Custom.
Do it all bike: Surly Disc Trucker 700c/29er