SoCal Jet Boats

Tech Talk => Gelcoat / Paint / Fireberglass Repair => Topic started by: TZracing on September 21, 2017, 05:17:59 PM

Title: Want to build a spoon on the bottom of a tunnel hull
Post by: TZracing on September 21, 2017, 05:17:59 PM

I am doing a centuren tunnel hull. I did a pump set back hand hold cover out side of boat. I would like to build a spoon on the bottom. Would like to know where spoon should be located in front of intake. How tall and how long it should be. My bottom is almost flat. So I think it would benefit from a spoon. This last thing I need to do with boat and want to get it done. Anybody out there with knowledge of this please give me feed back it would be appreciated. If you have pics of a spoon on a tunnel hull it would say a thousand words.lol

Title: Re: Want to build a spoon on the bottom of a tunnel hull
Post by: Flusher on October 01, 2017, 02:01:38 PM

https://www.instagram.com/p/BRerW1Ujfzh/

https://www.instagram.com/p/BRg_sx5jsjH/

https://www.instagram.com/p/BRjyhsSjys7/

https://www.instagram.com/p/vmiWy7oS2A/

The out-of-the-mold Cheyenne has a 7/8" dropped keel.  Width should match the intake at 7-7/8" wide.  Blend the elliptical radius of the intake into the tangent of the keel.  It's very important that the transition from the keel blend seamlessly into the intake.  Carry the keel forward far enough that it doesn't push through the water like a speed bump.