I own a 1984 20 powered by a 235 Johnson and i have a question about trim angle for skiing. What angle is best when skiing, should i trim under the boat or trim up till it lifts and takes off. My other question is what prop is best for skiing since i and considering a new one, because after rebuilding my motor I hit the rev limiter with ease at about 50 mph. I don't really need more speed, but it is fun to go fast and I would love to pass a Flight Craft with a Mercury that runs our local lake. Current prop is an 19 pitch aluminum.
That prop sounds about right for skiing. If you go higher pitch the speed will pickup and it will have less pulling power. I have a ski prop and a play prop. The trim is your choice. I trim up until the steering is neutral, or as you say it takes off. jim
It is really about the table created across the wake. Trimmed down creates a soft table for Hydrodyne 18 and 20 hulls, desirable for SL skiers (and other events). Trimmed up is easier for the driver but a hard table to cross for all disciplines. May want to experiment with a person who knows what they are doing on the end of the rope. They will let you know immediately if something is not right. Siding with Jim re the 19 pitch. Should slip nicely in the corners to keep the speed up.
A whale tail will put rollers in the low speed wake. A transom wedge is the answer. You can trim it out if you don't want it. jim
I have the 1984 20' Barefoot 20 with the evinrude 225 and all we use it for is skiing. The best trim position for all rope lengths is just slightly up from the full down trim position. When we experimented with different trim positions the wake and especially the prop wash started to create quite a hard bump between the wakes. Skiing at 32' off is a riot. The prop is a 19 pitch stainless. I hope this helps, Mark
On my 20' I am now running a 19 stainless four blade. Last year I was running a 21 stainless high 5. On all my Dynes I have owned I always liked to run a touch above full down trim. Greg
