Thanks again, 16x10 was same calc. as Hamble props so that's re-assuring. Prob.test at weekend.Cheers

Thanks for your interest. Damaged 17x13 removed and replaced with 16x13. Perkins 75tdi s'posed to max at about 4500.Reaches 6ish Knots between 2 - 2500 then only another 1 + until 4-4500 rvs showing. Loads of conflicting suggestions about pitch. At the start I assumed it needed the 'bite' of a bigge...

I've read with interest past posts re. these early fast? boats. Having just nearly sorted one (codpiece) out enough to do the old 'Sea Trials' I'm sure it's wrongly 'propped' and I'd really appreciate contact with any other owners hopefully to compare notes etc. I've had suggestions/help from loads ...