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I am going to put my chains and tensioners back on and stumble over this information in the instructions available here in the Forums:
”The sprockets must be kept in the same orientation, or upon indtallation male sure that the sprocekts are 1/2 tooth out og phase”
Well, I kept the orientation right, but why is it important that sprocekts are 1/2 tooth out of phase - I believe the chain will determine that? Or what am I missing?
Others with more expertise may arrive to help, but I think what you are looking at refers to the two **crankshaft** sprockets. These are identical and both have a keyway for correct location. However, when they are installed, the teeth will be half-a-tooth out off phase with each other as they locate on the crankshaft.
Well, I kept the orientation right, but why is it important that sprocekts are 1/2 tooth out of phase - I believe the chain will determine that? Or what am I missing?
Because the correct distance apart isn't a whole number of chain links, it needs the extra 1/2 a chain link to get the correct distance, so that the two shafts are aligned correctly and not slightly out of sync.
Thanks, Bob.
That's the only reason I could think of as it allows the links to interleave - but it only allows the sprockets to be what - 2mm closer together?
As you say, JFDI 'coz Jaguar says so, and they must have an engineering reason. Just curious.
I've seen this before on double roller chains on Front Wheel Drive transmissions. The links there were out of phase by 1/2 tooth, just like above, to reduce chain noise. Guess the harmonics phasing helps cancel out the noise.
How important? Putting sprockets back on
