[MHml] Cat Rudders Toed In?

[Paul Nudd]

Peter Southwood wrote:
> Paul, a lot depends on how you measure.
> Using a tape over 5m is tricky, even if you use a spring balance or some 
> other form of tensioner, and wind can wreck your accuracy, but if you use a 
> rigid device like an aluminium tube with a tape ot ruler fixed to it you can 
> get far more reliably repeatable results. After all, what you are looking 
> for here is a precise difference, where the basic dimension is of less 
> importance.
> However your point seems to be that the angle is not significantly different 
> from zero, with which I will agree.
> cheers,
> Peter
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Yes, there are certainly ways of measuring accurately. I have used them 
for motor car wheel alignment. However they are not readily available 
for use on boats. And yes my point was half a degree toe in is not 
significantly different from parallel and not worthy of discussion.
My preferred method of motoring in flat water and adjusting the crossbar 
until both rudders show best flow may yeild toe in or out of more than 
half a degree but will give the best result.
PN