Sorry Jas, little thing called sleep got in the way, i see you are in good hands though.....
You could go the manual jackplate route to get your motor to the optimum height once you get the transom the way you want it......if i remember correctly there is even a diy thread on here somewhere.
Ok fellas, prolly the little extra in the water isn't so bad. I finally got it upright tonight...
I measured this morning as it was laying on it's back. Now I see that I may be closer to the 22" mark. So if I mount it up just a little bit higher on the full 20" transom it may only be in the water an extra inch and a half or so. I'll certainly not lose any sleep over such a thing.
Gents, thanks for taking the time to stop by and chew the fat
Jason I see your confusion now. This 25 is measured differently than to 50 you had. The 25 is going to sit two inches lower as the cavitation plate does run flat with the hull button. Your water intake is behind the prop on the front side of the exhaust port. Where as your 50 was designed to run higher up on the hull because the water intakes sit lower and are forward of the prop.
If you are going raise you transom then add five inches to it. When you clamp the 25 on make sure it is sitting all the way down on top of the transom and you will be good to go.
Jason I see your confusion now. This 25 is measured differently than to 50 you had. The 25 is going to sit two inches lower as the cavitation plate does run flat with the hull button.
Jason, Just to let you know your not crazy, here some pics of my 18" short shafts on my Lone Star. The first two are an 18HP and the last is a 10HP. I had asked the same kind of question a couple months ago.
I still think your best solution is a jack plate. That way if you ever need or want a different motor you could look at short shafts.
Fabricating an adjustable Jack plate out of four pieces of Aluminum Angle 4.0" X 4.0" X .500 is probably going to be your cheapest and best bet which would also allow you to use other motors as well and will give your motor a 6" setback which I believe adds to the overall performance. I've made many of these and all worked flawlessly.
