help

Longest running airboat discussion on the internet.
Post Reply
Ford Power
Southern Airboat Member
Posts: 124
Joined: Sat Jun 02, 2007 8:31 pm

help

Post by Ford Power »

need help guys,
2 wknds ago at airboat races in inverness hit a rockand it cracked the hull and made the polymer pull from the hull on the front left and dead center rear. the blow appeared to make it(poly) look as if it shifted back when it hit cause the affected screw were angled that direction. had the crack repaired looks new. crack was on inside but not all the way through. after crack was repaired had bolts put back in around the outter perimeter.
took out for first run and it now ride like a bucking horse. you can get it up on plane driving normal and accelerate and run wide open and no problem. if ya accelerate hard itll jump on plane but then it feels like ya hit a log then starts bucking. let off the gas and smoothes out. before rock incident none of these ride issues. can the poly be shifted just a hair and causing this. had guy drive it and he said front is digging and need to shim motor up. it did plow a little before but now it seems worse and the bucking will scare the shit out of ya. any suggestion are greatly appreciated. scott

OVER BUDGET
Site Supporter - III
Site Supporter - III
Posts: 328
Joined: Sat Sep 23, 2006 9:16 pm
Location: sarasota

Post by OVER BUDGET »

When I put poly on mine it rode on the nose a friend told me to run it on asphalt.I thought he was crazy but tried it anyway.It worked great.Your poly might have a hook in it now and that might take it out.

basketcase0302
Site Supporter - IV
Site Supporter - IV
Posts: 1704
Joined: Thu Jan 06, 2005 11:16 am

boat

Post by basketcase0302 »

Ford Power,

When you say "bucking", I'm guessing this is porpoising?

Basketcase

Ford Power
Southern Airboat Member
Posts: 124
Joined: Sat Jun 02, 2007 8:31 pm

Post by Ford Power »

ive been i n a boat or 2 that porpoises, mineis more radical than that. it lunges out like ya hit a log then it grabsand goes down then it lunges again. different than any porpoising boat ive been in

User avatar
Des Moines Boater
Site Supporter - V
Site Supporter - V
Posts: 1401
Joined: Mon Sep 05, 2005 2:24 pm

Post by Des Moines Boater »

I had a similar problem once in a 10 foot Gilileo with slick bottom. I think I went across a log and it started to occasionally nose dive on me but usually only in the shallows and not all the time. I finally got underneath and found a little bit of fiberglass at the stern on the bottom that was getting into the water stream and acted like a speed brake. It was only two inches by two inches but what an effect it had on the boat. Who ever put the slick bottom on tried to fill in a low spot by adding a piece of fiberglass. I ground it off and the boat was fine.

Perhaps you have a spot that at certain times is coming loose just enough to let water get between the poly and the boat and causing a similar problem. Let us know what you find out.

Ford Power
Southern Airboat Member
Posts: 124
Joined: Sat Jun 02, 2007 8:31 pm

Post by Ford Power »

just got done mowing the grass and noticed water still dripping from boat. hull is dry its coming from between the the poly n hull. i had 6-8 screw holes leaking pretty good, so im gonna put bolts in them see if it helps, wondering if its getting water in that spot and causing akind of bubble spot to arrise?

dantheairboatman
Site Supporter - VIII
Site Supporter - VIII
Posts: 2379
Joined: Tue Feb 28, 2006 11:00 pm
Location: citra fl

Post by dantheairboatman »

Sounds like it is hydraulicking separating and changing shape.What do you guys think? Could get real fun if it comes loose :( Getter buttoned up.
Ox Box. Billet gear reductions and clutch systems
Sensenich propellers dealer.
Airboat consulting.
Dan@352 812 2239

alumitech520
Southern Airboat Member
Posts: 326
Joined: Sun Dec 31, 2006 3:30 pm

Post by alumitech520 »

just re-polied a glass boat not long ago,and yes it is developing a bubble.which will cause porpoising , same prob we had . changed poly and cured the problem.

cont520
Site Supporter - III
Site Supporter - III
Posts: 3409
Joined: Sun May 13, 2007 10:18 am
Location: Plant City

Post by cont520 »

if its causing a bubble it can also be causing a roller coaster ride might end up changing ends with ya if you dont get it fixed
Robert Mccormick
Plant City Florida, Toxic calls Pro staff and proud member of usfth
Ultimate Shot Productions prostaffer

Post Reply

Return to “Airboat Talk”