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Jack Marchand
#1 Posted : Monday, November 01, 2010 4:35:42 AM(UTC)
Jack Marchand

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OK guys, two questions reguarding trim tabs. 1. how to clean them correctly, mine have all kinds of deposits on them, paint too, without scratching the bejesus out of them and making them look nasty. and 2. The little switch at the helm that looks like a pawn in a chess game broke off, what did I do wrong? I barely touched it and it snapped off. Or is it a 35 year old "M" problem and just replace it? Thanks in advance for your help, JAM
75 FB express, "Big Enough II" twin 318s, 950hrs, raw water cooling, 1 to 1 transmisions, Beautiful Lake Charlevoix, MI
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ComputerJoe
#2 Posted : Monday, November 01, 2010 5:35:34 AM(UTC)
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Jack,

That chess piece is a joystick used to adjust your boats attitude, if you have Bennett tabs like I do.
Forward to the left would adjust the tabs put your bow down and roll the boat to the left. Straight forward would run both tabs out the same amount and put you bow down evenly without tipping to port or starboard. And of course the oppsite is true by pulling it back.

I have two the them little beasts here and one seperated in the middle, just fell apart. I suspect that is what happened to yours. I got mine back together and am planning on using some PVC glue when I'm sure it's working correctly.
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Jack Marchand
#3 Posted : Monday, November 01, 2010 7:31:12 AM(UTC)
Jack Marchand

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Joe, mine broke off just below the pawn and above where it mates onto the switch itself, making repair, I believe, just pull off the bottom piece (base of toggle) and get a new one. I just couldn't believe how easy it snapped off. I was trying to find out if others had this issue, and if they did what was the best fix? Make up a new 'pawn' or joystick or just buy the replacement? I am aware of this piece's function, just amazed how eazily it broke. Maybe it was allready broken and temperarily repaired by the PO. JAM
75 FB express, "Big Enough II" twin 318s, 950hrs, raw water cooling, 1 to 1 transmisions, Beautiful Lake Charlevoix, MI
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fastjeff
#4 Posted : Monday, November 01, 2010 7:35:37 AM(UTC)
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I hated that dumb switch so much I replaced it with a couple of toggle switches. Might have one of them left in my junk pile, though.

Jeff

PS: If you want to go the way I did, I have the wiring schematic.
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell
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Jack Marchand
#5 Posted : Monday, November 01, 2010 8:46:56 AM(UTC)
Jack Marchand

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Yeah, I really like the two flat toggles upstairs on the bridge, that might be the ticket, nothing to get hit. If you find em let me know. I'll be making a repair decision soon and might need those schematics, thanks Jeff! JAM
75 FB express, "Big Enough II" twin 318s, 950hrs, raw water cooling, 1 to 1 transmisions, Beautiful Lake Charlevoix, MI
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mark klusman
#6 Posted : Monday, November 01, 2010 12:40:35 PM(UTC)
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Jack,
Had the same thing happen to mine this spring. I removed the screw and inserted a new one with threads on both ends, just a bit longer and screwed the " pawn' to the lower section. Since the lower section seems to have some spring to it , it made up just fine. Don't know if this will help you but it worked just fine for me.
Mark
No matter where you go,there you are.
Knot Normal
28FT. Express
Twin 318's
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fastjeff
#7 Posted : Monday, November 01, 2010 11:32:06 PM(UTC)
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The toggles came from Radio Shack.

Here's the Bennett Trim Tabs wiring set up:

Fuse: 12-volt system use 20 amp in-line fuse on positive.

Red -----------------------------Port Valve
Green ---------------------------Starboard Valve
Blue ----------------------------Motor Forward (pump pressure)
Yellow --------------------------Ground
Orange on Helm Control ----------Positive

(Note: Use Orange + to power the above valves and motor.)

Operation: -----------------------Reaction:

Orange (+), blue, red -------------Port trim tab down
Orange (+), blue, green, ----------Starboard trim tab down
Orange (+), blue, red, green ------Both trim tabs down
Orange (+), yellow, red -----------Port trim tab up
Orange (+), yellow, green ---------Starboard trim tab up
Orange (+), yellow, red, green ----Both trim tabs up
-
Jeff
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell
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Jack Marchand
#8 Posted : Tuesday, November 02, 2010 1:53:04 AM(UTC)
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Mark, I like that idea, will try that when I go up to the boat in 2 weeks and if that fails, I'll be using Jeffs diagram (thanks Jeff!) and rewiring. The FB has rocker swtches and they are MUCH easier to operate and require no maintainance or 'dainty' handling which could spell trouble when you least want it to! JAM
75 FB express, "Big Enough II" twin 318s, 950hrs, raw water cooling, 1 to 1 transmisions, Beautiful Lake Charlevoix, MI
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fastjeff
#9 Posted : Tuesday, November 02, 2010 3:01:28 AM(UTC)
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..."The FB has rocker swtches and they are MUCH easier to operate "

I agree. Nothing like bumping one, separate switch to make a fine adjustment.

Jeff
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell
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shamrock
#10 Posted : Tuesday, November 02, 2010 12:55:32 PM(UTC)
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Are separate switches expensive and are they hard to install?
1981 37 Sedan Bridge
Twin 185hp Volvo diesels, Props 19X19 four blade
Twin 150 Galion fuel tanks, Twin 50 Galion water tanks
7.7KW Westerbeke diesel generator
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fastjeff
#11 Posted : Tuesday, November 02, 2010 3:02:36 PM(UTC)
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No and....not really. I used momentary, SPDT switches from Radio Shack. I used an aluminum plate to mount them side by side in the old switches' location. Had to file out the wood behind the plate a bit, as I recall.

Jeff
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell
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