Dimensions for the Welsh Willy Dagda HP spring, courtesy of brk1 (thank you) :-


Quote Originally Posted by brk1 View Post
Try one of welsh willys new HP Dagda springs, might well be close to your needs , may not be on his site yet ??? but are available , you'd have to talk to him, didn't realise you were in Oslo

Dimensions are as follows
34.5 coils
280 mm length
Wire Gauge 3.00 mm
O/D 19.60 +/- mm
I/D 13.6 mm