AJS & Matchless Owners Club

East Suffolk Section

Technical Tip (30) Quick test for a jumble speedo


A jumble find might or might not be a working speedo but it can be quickly tested with a small electrical screwdriver, which will just fit in the drive. From the back, the drive rotates Anti-clockwise and flicking quickly should show around 10 or 15 m.p.h. and stick there. Continue turning slowly and the needle should fall to zero.