I have 2 props a 17" pitch and a 19"
The 17 allowed just a bit too many revs , and the 19 not quite enough when loaded a bit .
So i sent the 17" pitch prop to Steel Developments to re pitch to 18"
Tried the new re pitched prop saturday and its just cavitates when trimmed out where I normally cruise . If you go from about 3/4 throttle to full it just slips again .
At wot the revs are wantinmg to go over 6000 . Its as if they have re pitched it to 15 .
The prop was returned re painted looking like new , but the blades appear much thinner and sharper than before ,and there appears to be fine grinder marks visible .
I rang steel developments and told them and really just got some flannel that the prop probably just didn't suit my boat ,and re pitching envolved bending the blades not grinding . They tried to say I had damaged it or dropped it and bent a blade , which I haven't .
Before it went it was fine just a little undergeared unless loaded or towing . They want me to send it back for them to see , but I fear that will waste another £12 each way postage on top of the £57 its allready cost , plus I no longer have useable spare prop .
Any ideas what they have got wrong
and what I should do .