I agree that moving the boat just a few inches made a huge difference on tongue weight and axle load. It took us 4 tries to get it right. I will provide some measurements and pictures for anyone interested. Seems there are a lot of variables to consider.
>>> "Phil Agur" <[email protected]> 7/9/2009 3:09 PM >>> Mark, Tongue weight is going to be mostly governed by the boats placement relative to the axles. The tongue itself could be a foot longer or shorter and only change the tongue weight by a few percentage points but moving the boat versus the axles a foot you can change it 200%. A bit of a SWAG I admit but I moved Wing Tip forward about a foot to add a 1,000 lbs of tongue weight. I carry a ton on the gooseneck but I expect your target would be around 750 pounds. I confirmed mine on a track scale by weighing the hitched up boat and trailer with the truck off the scale and then unhitching for the second weight. I would think the most useful measurements for Mike would be the distance from the rear tip of the keel to the center of the rear axle and then the center to center axle separation. The slope and the curve on the front of the keel would make it difficult for you both to measure it the same way. The rear tip is a nice hard point. Tandem axle trailers tend to all have the same axle spacing based on available springs, hangers, and fenders but it's worth double checking. Phil Agur <http://www.catalina27.org/public_pages/profile270.htm> s/v Wing Tip C270 LE #184 MMSI 366901790 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mark Robertson Sent: Thursday, July 09, 2009 1:04 PM To: [email protected] Subject: Re: [IC27A] Trailer Preparation Mike you are in luck, Two weeks ago, I just did the very thing you are going to do. On my boat they lifted it at the foreword end of the cockpit and at the front end of the cabin. I welded a 6 inch channel down the center of the trailer on top of the cross braces to help stiffen the trailer and support the weight. I put a 2x4 board in the channel for the keel to rest on so the channel legs have to face up. I adjusted the pads to support the boat with the keel fully resting front to back on the channel. I had the trailer attached to the truck and we had the crane move the boat foreword and backward until we had a good balance of tongue weight and weight distribution between the axles, that took about 4 tries before we got it right. I trailered the boat from Long Beach California to Salt lake City Utah about 800 miles without any problems . If you would like I can measure the distance from the ball to the front of the keel if you would like. I could also give you the dimensions from the ball to each axle if that helps. I took a large powerboat trailer and modified it to work for my 27. >>> MIKE TAYLOR <gard...@flash. <mailto:gardtay%40flash.net> net> 7/9/2009 1:15 PM >>> I recently purchased a trailer and plan to bring my boat home for some maintenance and refitting at the end of the season. I am beginning to get the trailer ready to receive the boat. I've been reviewing the "Dimensions for Lifting Procedure" available on the IC27A website. Am I correct to assume the boat's longitudinal center of gravity is halfway between the two designated lifting points on the diagram? Does anyone have an idea how far forward of the center line between the trailer axles the boat's center of gravity point should rest? Thanks for any suggestions you have in getting the trailer ready. Mike Taylor C27TR 3589 "Triumphant" Lake Tenkiller, OK [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
