JAE 21 Rudder Question

[JayP]

I am doing the final assembly of my JAE 21 and I have a few questions. I have attached an image of the rudder I got from ZippKits and I am wondering if you leave the bottom of the leading edge rounded or should I square it off before sharpening? As it sits now, the rudder is about 1 5/8”-1 3/4” below the bottom of the ski. Is the rudder too deep to start with?

On a separate subject, are you guys running the boat with 1/8” toe in on the right sponson or run it square and true? I know there are a lot of factors including building a straight hull, just wondering if the majority of you have incorporated toe in? I have the older G2 boat and it is built straight and true.

thanks for the help,

Jason

 

[David Murany]

Leave it how it is and round the bottom of the rudder.  Also make sure the leading edge is sharp.

A longer rudder helps to hold the boat down the straights.  

 

[brad nichols]

No toe in

Brad

 

[Ron Zaker Jr]

I run just over a 1/16" toe in on fin side. Personally I sharpen my rudder bottoms to a point. As Dave said rounding off also helps.

 

[JayP]

Thank you all for your input!

 

[JayP]

I am not questioning the designers at all, I am just wondering why not use boom collars instead of drilling and bolting the sponsons on the tubes? Wouldn’t it allow for quicker boom changes, toe in adjustments, etc.? Just curious.

 

[BrianNeumann]

That's what I did with my JAE 12. I cut 2 relief  slits in the brass inserts on the sponson tubes and then use clamps out at the sponsons. Works great for me and has never slipped. But it is a 12 not a 21 so I cannot say whether the bigger boats will hold the sponsons tight.

 

[JayP]

My .12 is the same way, that is why I am asking about the .21. You may be right, maybe it has something to do with speed and slippage.

 

[timothy johnson]

You mean like this, works great.