Not quite sure about the exhaust port near the cowling as the only exhaust I have is out the back of the prop
Different brands, 2S 4S yep. distance from bottom of cowl will give me a good ball park
I think my pod might be more than 12 degree as I had to install a wedge
between the pod and the motor to get enough trim. You might be able to
see it in the photoYes saw the wedge, wasnt sure if was a wedge or the insulation pad.
Even if the std 12 deg, sometimes the engine needs a wedge because of the balance of the hull.. where stuff stowed usually.. or can be a prop with incorrect rake.. or can be 'fixed by changing to a prop with different rake.
They all work just as well as each other.
Yes, with a 12 degree transom, it's surprising how far back the motor is when at 90 deg to the keel line.
I've a feeling my motor might end up on the bottom hole..
Tagit, damn miss his info.. put me onto that when I was looking at 20" 25" jack plates way back... I had decided if was going to put a 25" on a 20" transom making up my own alloy channel jack plate was very high on the list..
He said the difference between the engine being vertical at cruise and the difference between the 20 and 25" 12 deg transom length is far greater than one would expect.. then add the extra distance from the transom of the jack plate...
So I did the maths, including measuring the elliptical curve off the keel at several distance back from the keel at cruise (35 mph)
Its my understanding this is rather a common install error even in professional/ experienced work shops..
\
Dave:
Graph paper sorted for now... download pdf s and join the A4 printouts together.
Checked out on line, warehouse stationary have graph paper books as you say.
Looking for those big sheet pads of graph paper used to buy about 500mm by 750 mm (?)