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🙂 Hi all fellow boaters
I am in the throws of building my new counter rotating twin engined Off Shore boat and was just wondering if any of you have thoughts on where my rudder or rudders should go. On my old twin engined boat I had twin rudders directly behind the props, the boat was ok at high speed but did not turn well at low speed. I was either thinking of one rudder inside the props and close to the transom and also thinking twin rudders outside of each prop. I thought if I go this way the rudders may also act as turn fins. Love to hear your thoughs. Cheers Sorry 🙂

Hi Sorry. This is out on a lim that I do not have any experience (rudders) but maybe worth getting in contact with Brian Hely (Tauranga)as he has run twin engine deepvee and building another one.
As for the fiberglass fuel tank, I did build into my old glow boats a glass tank. That required an additive. I cannot remember what it was but try Hamilton Fiberglass supplies. Cheers, Harry

Why don't you put a sample of the chosen fibreglass in some petrol for a couple of weeks and compare it with a sample that has not been in petrol, better include the oil too.

And you had better have a very good high catching capacity fuel filter to catch the micro fibres that will get dislodged as the tank ages in use!
I would go to Repco or SCA and find one that is intended for a car and use that.

Hi Brian, Are the exhausts completely separate or do they join somewhere along the way. Rudy had the same problem here, using a common silencer after the tune pipes at the transom. Had same motor problem as you until here separated the silencers.