Bravo 1 increase negative trim cutting trim rods
I'm looking to increase negative trim on a Bravo XR. I've read about a couple of guys cutting 3/4" off the end of the rod and re-assembling. Anyone done this? I assume the bolt needs to be cut or replaced with a shorter one. I also think some non-essential part of the housing needs to be trimmed for clearance?
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Ive thought of doing this also . I’d like to see what the feed back is on this topic. I know rams on the ITS system suck in further . They use a very short zinc in stead of the longer one.
https://cimg0.ibsrv.net/gimg/www.off...a3bb1f2138.png |
I've read online about two guys that have done it. They said it helped with planing. I have a 26 Daytona -2 lower. They're fast, but very slow to plane with a "speed" prop. I'm not sure on the ITS, but the zinc length doesn't change the amount of trim "in", it's that the rods have bottomed out. The max trim out on the standard Bravo cylinder is 21 3/4". Too long to go lower. If you have a V hull apparently you need to be very careful about bow steer if you shorten the rods for negative trim. I think the Imcos have shorter trim cylinders. My buddy's Imco goes negative. I'm probably going to modify mine this week.
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Originally Posted by Don_Juan
(Post 4844655)
I've read online about two guys that have done it. They said it helped with planing. I have a 26 Daytona -2 lower. They're fast, but very slow to plane. I'm not sure on the ITS, but the zinc length doesn't change the amount of trim "in", it's that the rods have bottomed out. The max out on the standard Bravo cylinder is 21 3/4". Too long to go lower. If you have a V hull apparently you need to be very careful about bow steer if you shorten the rods for negative trim. I think the Imcos have shorter trim cylinders. My buddies goes negative. I'm probably going to do it this week.
https://www.offshoreonly.com/forums/...archid=2792608 |
Originally Posted by Don_Juan
(Post 4844655)
I've read online about two guys that have done it. They said it helped with planing. I have a 26 Daytona -2 lower. They're fast, but very slow to plane. I'm not sure on the ITS, but the zinc length doesn't change the amount of trim "in", it's that the rods have bottomed out. The max out on the standard Bravo cylinder is 21 3/4". Too long to go lower. If you have a V hull apparently you need to be very careful about bow steer if you shorten the rods for negative trim. I think the Imcos have shorter trim cylinders. My buddies goes negative. I'm probably going to do it this week.
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Originally Posted by SB
(Post 4844687)
Member Tinkerer has a Daytona with a -3. Anyway, he modded his to get more negative trim. He mentioned how and how well it worked for him. Do a search or click on following and click thru his posts:
https://www.offshoreonly.com/forums/...archid=2792608 |
Originally Posted by cig28
(Post 4844706)
That link doesn’t work. I’d like to read on what he did.
You can get to same place. Click search above. Click on advanced. Go to search for users name and enter Tinkerer. Click search . You can scroll thru his posts to find them. |
Originally Posted by SB
(Post 4844711)
bummer it didn’t work. However,
You can get to same place. Click search above. Click on advanced. Go to search for users name and enter Tinkerer. Click search . You can scroll thru his posts to find them. |
Bummer again.
Try a PM. He has good knowledge on many things. Hopefully he’s around and see’s the pm. I know he hasn’t posted here for 2 yrs or so ???? |
Yes, one of the articles I read was from Tinkerer. I also saw he hasn't been on here a couple of years and didn't think he would see a PM. @Cig28, yes I can see from your pic the ITS has a shorter zinc and looks like it pulls in more. The other guy said cut a maximum of 3/4" off the rod, cutting more does not result in more negative trim.
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