Bad vibration

[Dave2 0]

I have a 1986 TruTrac 2, velvet drive transmission, with a 351W from a donzi, lots of reinforcing done to hull, runs great. But when getting it out of the hole, and up to speed there is alot of vibration, is this normal? Thanks

[Kevin Baugh 78]

no it is either not aligned or has bad prop or strut or shaft or all of the above

[mojoridin 1]

X2

 

Most likely you have a bent prop. Can you see any dings or little bends in your prop?

[bcollins 18]

Probably your prop...I had a barely noticeable ding in my prop. While crusing I didn't notice antyhing, loaded it up for surfing and it vibrated like crazy. Got it fixed, no more vibration. Do you notice it when you're not pulling someone?

[superdtf 68]

Kevin is right. If the prop is struck hard enough to cause that, often the shaft is compromised as well. Sometimes it's even worse, back in the '80's we had a Nautique that we changed the prop, shaft, and strut bearings after we hit something; and it still shook. Turned out the strut was tweaked. Too bad it took two years of screwing around to get to that. By that time half the screws in the windshield had shaken loose. - we're a 100+ hours per year kind of family.