- Location
- Winter Park
I’ll try to make a long and boring story short- but after riding today and noticing such a drastic change, I had to share my thoughts. This might have been common knowledge to everyone but to me it wasn’t so I’m sure it will help someone.
So I’ve been running an oem 155 pump with an rrp trim ring and rrp steering nozzle with oem reduction nozzle. It was a good system and did what it was suppose to. But after buying a 5 degree reduction nozzle and setting it up- I realized how inefficient my trim was. I was chasing my tail with prop pitch and trying to dial it in when my problem was a restrictive trim system and not so much a poorly pitched prop.
Basically on my old trim, at full trim the flow would get very restricted. I had my nozzle bored out to 90mm however at full trim the flow would get restricted to 80mm at the “bend”- that was a BIG source of a prop pitch problems, because now at full throttle everything was getting limited by that 80mm point. For my setup I always felt that I had weak flips and rotation and terrible spins... well this was the source of my problem. Now that I’ve added my new reduction nozzle and cut the nose of it off to various degrees- the pump is much happier and the most restricted portion is about 87-88mm. Now I have to pitch back up because it’s spinning like crazy. I also made sure my tolerance were very tight to eliminate any “leakage”
Moral of my story- if you’re chasing down prop pitch confusion, check your trim and measure the most restrictive spot- you might be surprised. I can go more in-depth of how I modified mine and what my trim looks like now, but the principle here is the main take away.
Today on the water I was finally able to idle flip and 360 with ease and hit a 540 off a small boat wake. This was by far one of the most drastic changes I’ve made on my ski.
Some trim systems might have already addressed this, but idk, I’ve never measured others. But those running a pieced together trim system might want to have a closer look.
If this was all common knowledge to others then that’s cool too, let me enjoy my epiphany lol.
Sent from my iPhone using Tapatalk
So I’ve been running an oem 155 pump with an rrp trim ring and rrp steering nozzle with oem reduction nozzle. It was a good system and did what it was suppose to. But after buying a 5 degree reduction nozzle and setting it up- I realized how inefficient my trim was. I was chasing my tail with prop pitch and trying to dial it in when my problem was a restrictive trim system and not so much a poorly pitched prop.
Basically on my old trim, at full trim the flow would get very restricted. I had my nozzle bored out to 90mm however at full trim the flow would get restricted to 80mm at the “bend”- that was a BIG source of a prop pitch problems, because now at full throttle everything was getting limited by that 80mm point. For my setup I always felt that I had weak flips and rotation and terrible spins... well this was the source of my problem. Now that I’ve added my new reduction nozzle and cut the nose of it off to various degrees- the pump is much happier and the most restricted portion is about 87-88mm. Now I have to pitch back up because it’s spinning like crazy. I also made sure my tolerance were very tight to eliminate any “leakage”
Moral of my story- if you’re chasing down prop pitch confusion, check your trim and measure the most restrictive spot- you might be surprised. I can go more in-depth of how I modified mine and what my trim looks like now, but the principle here is the main take away.
Today on the water I was finally able to idle flip and 360 with ease and hit a 540 off a small boat wake. This was by far one of the most drastic changes I’ve made on my ski.
Some trim systems might have already addressed this, but idk, I’ve never measured others. But those running a pieced together trim system might want to have a closer look.
If this was all common knowledge to others then that’s cool too, let me enjoy my epiphany lol.
Sent from my iPhone using Tapatalk
