
THE RECIPROCATING PISTON PETROL ENGINE 53
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Figure 1.101 A two-stage roller chain driving double
overhead camshafts (Renold)
1,2 camshaft sprockets
3 secondary stage manually adjustable idler sprocket
4 tandem idler sprockets (one hidden behind the other)
5 camshaft sprocket
6 primary stage slipper shoe chain tensioner
A similar arrangement is required for V-formation
cylinder engines with double overhead camshafts on
each bank, although the installation becomes further
complicated in that the secondary stage must be dupli-
cated. Where a single overhead camshaft is used on
each bank of a V engine ...