Speedmaster Stinger Harware with Water flow problem- Low flow

[sanyijr]

I have this http://www.offshoreelectrics.com/pro...d=ros-mini-rud
with http://www.offshoreelectrics.com/pro...os-stinger-str

and it looks like this installed on my DF26 with X637 prop. http://forums.offshoreelectrics.com/...thomas-stealth Pic #1(thanks Phil for pic)

Obviously not my boat, but same stinger to rudder proportions. Prop is set back from rudder. Water pickup is 1 inch below transom, but offset 1.5" from stinger/ "V" bottom of boat.

Water pickup/output is very small. Sometimes at mid speed, 20-25 mph, still almost no water coming out. And I cannot figure why? There are NO kinked tubes. Resistance through cooling system is less that my Fastech, but flow is 50% of Fastech at best.

Anyone have this issue? Has anyone modified the rudder for added pickup by adding the tapered cut into the rudder on both sides like http://forums.offshoreelectrics.com/...m-Quastion.... pst #12, pic #3. (thanks Darin) Where rudder cut is on both sides?

Any suggestions?

[MR2NR]

Is there.no water flow? If there is a steady stream that should be all you need. If it is spitting I would go to a larger intake and trim your lines to tue most direct route. This worked for me using a transom intake as well I go to a y that is closer to the esc and the other to the motor. Then run dual outlets out the back.
I had flow issues as well until I modified as above now it works great.

[sanyijr]

Is there.no water flow? If there is a steady stream that should be all you need. If it is spitting I would go to a larger intake and trim your lines to tue most direct route. This worked for me using a transom intake as well I go to a y that is closer to the esc and the other to the motor. Then run dual outlets out the back.
I had flow issues as well until I modified as above now it works great.

MR2NR, there is flow, but yes, spitting or sputtery. And sometimes none in even slight turns. The rudder is true to the direction of travel.

[BrianW]

Something to do to optimize water flow is to take a very small round file and massage the opening in the rudder blade so that it is right to the leading edge of the blade.

I have this http://www.offshoreelectrics.com/pro...d=ros-mini-rud
with http://www.offshoreelectrics.com/pro...os-stinger-str

and it looks like this installed on my DF26 with X637 prop. http://forums.offshoreelectrics.com/...thomas-stealth Pic #1(thanks Phil for pic)

Obviously not my boat, but same stinger to rudder proportions. Prop is set back from rudder. Water pickup is 1 inch below transom, but offset 1.5" from stinger/ "V" bottom of boat.

Water pickup/output is very small. Sometimes at mid speed, 20-25 mph, still almost no water coming out. And I cannot figure why? There are NO kinked tubes. Resistance through cooling system is less that my Fastech, but flow is 50% of Fastech at best.

Anyone have this issue? Has anyone modified the rudder for added pickup by adding the tapered cut into the rudder on both sides like http://forums.offshoreelectrics.com/...m-Quastion.... pst #12, pic #3. (thanks Darin) Where rudder cut is on both sides?

Any suggestions?

[sanyijr]

B,

That is more like what I am lookiong for... I was going to Dremel the opening to the LE of the rudder and mirror that on the opposite side. But hve people done this with success is my question/concern?

[BrianW]

It makes all on the difference in the world. They are machined that way so it takes a little work to make them very efficient

[sanyijr]

It makes all on the difference in the world. They are machined that way so it takes a little work to make them very efficient

In that case, I have found my new project for tonight....... After Dinner, bath for kids, bedtime stories, cleaning kitchen.......a beer. But by then I will have re-evaluated and put it off till tomorrow. But the important part is I know what to do! Thanks