Little bit off subject but has anyone sharpened the transom / hull edge on a older twin engine offshore hull and recorded the speed increases ? Picked up a few mph on a 27 sleek ,used clearcote brand clear gel held up well i think most late '90s up are knife sharp from factory but havent really looked at as many boat butts as i should of in last few years

No offense, but Reggie SAID a lot of things. While some of his accomplishments/furthering of the sport are noteworthy, a lot of what he said was based on pure marketing/hype.

Several Fountains in my area with boxes and the owners all seem to like them better.

The reasons you would move any drive back is to move some CG back and to get the propeller back further plus other questionable benefits. When you trim your boat up or down the further the prop is back the more leverage it has, like a breaker bar. So if you run level trim all the time not sure what you may get from the boxes. In my case I saw big gains in handing and the ablility to help pick the bow up. Again I had built a single huge box to tie the drives together they were moving on the transon. This is commin with all new boat with big power over time. You can't get them tight enough the transon will compress first. I am sure each boat will see differant results, but real fast boats with shafts are set way back?

I think with the decline of the Lake-X/X-Site approach of tweaking the last 2.397331 mph out of a setup; many folks are happy with "stock packages"; or at least how Mercury engineered them. Also, with the big HP and high RPMs that folks are turning now; adding length and points of failure to the drive-line rotating assembly is reason for concern/recipe for disaster. Just ask Geico; and I'd venture to say they have a setup with some of the most advanced testing around.

120mph or 122.3mph isn't that big of a deal; and there are a dozen variables that could make or break that difference every day of boating.

isnt the gimble on a 6 pretty much a box to begin with, and the 6 is longer, so compared to say a stock bravo setup, the prop looks further back...havent measured it but by eyeball it looks that way....

I'm talking about a 6 on boxes vs a 6 on the transom..

Does anyone even make Extension Boexes anymore since Stelling's went out of Business?

Jon

There is a guy in Florida making them for some of the race teams, but he does not advertise and its not his main business, but he will make them and has the templates to do so.

Funny you should ask.... I was machining on these till about 3 am this morning. They are for skater. 8" set back and wedge out of billet aluminum. Two different styles.

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I made Skater a pretty cool transom drill fixture for them with replaceable drill bushings.


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