twisting deck while running problem

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BassFrequency · #1 Post by **BassFrequency** » Tue Apr 27, 2010 3:22 pm

i noticed over uneven chop, my front half of the deck looks like its twisting a bit. whether its supposed do that or not its uncomfortable to watch it do that so whats the best way to correct this? i was thinking of adding alum C channel but i would like to know if anyone else had any other soulutions. i just know its killing my speed when its flexing but i for sure dont want anything to break off in the middle of the lake crossing an inconsiderate dillweed cruisers wake

and no stereo vibration/bolts loose jokes

unfortunatly ive already checked that

toondog · #2 Post by **toondog** » Tue Apr 27, 2010 3:59 pm

It will depend on how heavily built your boat is. Mine is built for a max 70 hp motor so it is built on the light side. I have always had some flexing going through the chops at speed. I started to notice it getting worse, but didn't think anything of it. One day while on my float, I floated under the boat (that's one thing I love about two loggers

)I noticed I had a "M" bracket on both sides with cracks where the deck bolted on. Had them welded and I am back to slightly flexing. Just something to check.

BassFrequency · #3 Post by **BassFrequency** » Tue Apr 27, 2010 4:25 pm

toondog wrote:It will depend on how heavily built your boat is. Mine is built for a max 70 hp motor so it is built on the light side. I have always had some flexing going through the chops at speed. I started to notice it getting worse, but didn't think anything of it. One day while on my float, I floated under the boat (that's one thing I love about two loggers )I noticed I had a "M" bracket on both sides with cracks where the deck bolted on. Had them welded and I am back to slightly flexing. Just something to check.

x members are on 24" centers in the fronts and go to 12" centers in the back. I'll inspect the M brackets in the mornin. I probably should mention shes rated for a 120hp and the original x members are S channel not C

lakerunner · #4 Post by **lakerunner** » Tue Apr 27, 2010 5:02 pm

If there is room I would add a 2x2x1/4" aluminum angle all the way across and bolted to cross members and logs. I had a saggy transom ( no old jokes) and thats how I fixed it. The boat is 16 years old and when new owner(6yr ago) took it to Sundancer for refurbish they told him it was a hell of a strong support and left it on.

Bamby · #5 Post by **Bamby** » Tue Apr 27, 2010 6:10 pm

While you're looking at the brackets, etc. also carefully check out the condition of the plywood floor decking while your at it. Pontoon boats rely heavily upon the deck as a key structural element in their overall stability and structural rigidity. If your plywood is starting to "fail" it could also allow the flexing to take place your speaking of.

BassFrequency · #6 Post by **BassFrequency** » Tue Apr 27, 2010 7:23 pm

Bamby wrote:If your plywood is starting to "fail" it could also allow the flexing to take place your speaking of.

thats what i didnt really want to hear

thats a job i dont have time or $$$ for at the moment. the ply wood doesnt have any bad spots in it yet that ive found so hopefully its not that. if its a bad bracket or needs alum reinforcment i can weld that up fairly easily

WaltF · #7 Post by **WaltF** » Wed Apr 28, 2010 9:09 am

When in doubt, WELD THAT SUCKER!!

well, that n duct tape..

GXPWeasel · #8 Post by **GXPWeasel** » Wed Apr 28, 2010 9:56 am

I have never noticed any flex in mine at all, even on really choppy days, and is only rated for 125hp. max. I wonder if the floor being made of aluminum helps with the structrual regitity?

Hopefully you can get it all figured out there BF. Sounds like guys here have noted a few good options for you.

Bamby · #9 Post by **Bamby** » Wed May 05, 2010 5:35 am

Bump, have you located whatever ailing it? Hopefully it is or was something simple and easy and inexpensive to fix.

BassFrequency · #10 Post by **BassFrequency** » Wed May 05, 2010 6:26 am

went swimmin yesturday and found some cracked welds on the back M brackets which may or may not be leaking, havnt found proof either way yet. but i think i'll lower my center log so its even with the bottom of the outer logs as i noticed when the bow is on plane, not much of the center log is in the water and the outer logs seem to be carrying the extra weight.

curtiscapk · #11 Post by **curtiscapk** » Wed May 05, 2010 6:33 am

Swimming???? WTF its 63 degree water you sir are

BassFrequency · #12 Post by **BassFrequency** » Wed May 05, 2010 8:04 am

curtiscapk wrote:Swimming???? WTF its 63 degree water you sir are

2 words

Polar Bear

GXPWeasel · #13 Post by **GXPWeasel** » Wed May 05, 2010 10:50 am

curtiscapk wrote:Swimming???? WTF its 63 degree water you sir are

That's warm enough. Hell a couple weeks ago, I was swimming in 50* water.

Glad you may have found the culprit BF. Good luck on getting her fixed up.

curtiscapk · #14 Post by **curtiscapk** » Wed May 05, 2010 11:05 am

Godddamn Jayhawk for ya!!

GXPWeasel · #15 Post by **GXPWeasel** » Wed May 05, 2010 12:07 pm

curtiscapk wrote:Godddamn Jayhawk for ya!!

Hey hey hey, no Gheyhawker here. Wildcat all the way ( not a Tiger either )

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twisting deck while running problem

twisting deck while running problem

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