Propeller Calculation Enquiry
Important - The accuracy of this information will determine the success of your
installation, therefore please include all other relavant details
you feel will help us to select a propeller that will give your
vessel the required performance.
Actual resistance and wake values would provide
the best information. In the absence of this information we
can estimate size, please supply drawing and sketches. When
estimating a size we usually acheive a high level of success
but we cannot garantee that the required performance will be
acheived and we cannot accept any charges for vessel lifting,
propeller removal, etc.
A charge may be made for any modificaton or replacement
required. If a guarenteed propeller selection service is requested,
then a seperate instruction will be required.
Full examination of the vessel is necessary,
together with trial prior to selection. Trial after fitting
the propeller must also be conducted. These activities must
be carried out by French Marine Motors Ltd.
Costs for this service can be discussed. In rare
cases some installations can produce 'harmonic resonance' in
the propeller ( commonly termed 'singing'). This condition is
extremely difficult to predict and we therefore cannot guarantee
against 'singing' occurring or accept any charges arising thereof.