Aye Jhop,
'White finger' and 'carpal tunnel' are 2 very different conditions.
'White finger' caused by vibration, over exciting the nerves and small blood capilleries in the hands, causing the capilleries to contract. Hence loss of blood supply, oxygen, warmth and a tingling sensation despite numbness. Use thicker handlebar grips, don't grip so hard (chill man!), heated handlebar grips, loose fitting gloves and a more upright, weight off the forearms stance when riding.
'Carpal tunnel' due to inflamation of the tendon sheaths through which the tendons run, passing through the carpal tunnel in your wrist. A form of repetitive strain syndrome. Lifting heavy weights with your finger tips, multiple trays of bedding plants, stacking lengths of timber ready for extraction after felling by hand rather than using pulp hooks and tongs to grip the timber. Arm fulls of books when re-stacking library shelves.
Being a wood cutter as Smudge will testify, induces both injuries, the only cure for which is rest and abstinance from using chainsaws or any vibrating machinery and lifting or stacking repetitively any heaving objects by hand.
So installing large single cylinder engines into frames using your finger tips and then hanging on whilst riding said motorcycles tends to be an occupational hazard. ;-)
Keep bopping, Bill
