1998 2150 bad vibes due to attempted boat chainsaw of stump

[Illiana]

Hello all, old blue took her first major shot from a stump or log in a two years. We ran everyday in July and August in same lake and ive ran this exact location at every different speed which is scary. Lake was down about 3 inches. Had about 1000 lbs of weights in boat surfing and making jet skis happy. We had just atopped and finished riding for day. Jet skis wanted one more round of waves. I was running about 13 mph when i rocked a stump or huge log, never did find it.

Brought boat to immediate stop. Was a very hard hit, boat never died. Shut down to try to mark the offender but couldnt locate it. Started back up and the slightest rpm increase caused bad vibration. We idled back to lift. I have it high enough on lift to stand under it. I’ll be digging in this weekend and am hoping for some tips.

Fins are intact, everything looks good from a very limited inspection. I cannot believe there isnt major destruction.

Start with prop and move forward? Thanks all for any feedback.

[chpthril]

Got an pics?

[Illiana]

Chpthril, thanks for reply. Not yet, i’ll get some real close ups tomorrow and post up to see what you guys think. Have agood one.

[TeamAllen]

Sorry to hear about your problem. Do you have a spare prop?

[Ruger761]

That stinks and kind of scary what can be under the surface a person cant ever see. Good luck hopefully just a prop needs to be replaced/repaired and nothing major.

[KoolAid]

Hopefully it was just the prop. Worst case could be prop shaft, strut and prop.

[Illiana]

Thank you all for the replies. I have a spare prop but not one good enough to rule other things out. Im not really savvy with the pics so bear with me. Things i noticed upon closer inspection. The fiberglass cracking was notbthere before and there was some heavy debris on the shaft that may be where it hit but could also just be from lake. Front of rudder has taken a hit. I couldnt eye it like an expert but prop looked ok, nonobvious nicks bends cracks.

Also, where the shaft goes through hull, the shaft is not dead center when underneath boat. Hard to see in pics but there is slightly more space below the shaft than above it. Not rubbing at all and maybe its always been that way. I turned prop by hand and it squeaked in a couple spots but stopped after third rotation by hand. I looked and felt for play in shaft while spinning but didnt see or feel much. Thanks for any additional feedback.

[bait28]

Ouch, can you pull on the strut in any direction and see or feel any movement?

Your prop has to be compromised in some way with that impact think you will need to find at least a temp to test with.

Also the trueness of your shaft is going to need to be checked also.

[Illiana]

More pics. Also some red packing of some sort of back of shaft near prop.

[Illiana]

Ok, thats all i have for now. I gues i should have a good backup prop anyway. I think whats on is an acme 525 13x11.5. Weve been happy with boat and it does everything weve needed as far as riding so far. I appreciate all feedback and thoughts on props, etc.

[KoolAid]

Looks to me like the rudder took most of the damage. Typically a higher strike (at the strut) would curl the prop up really good before it dented the rudder like that.

Cracking on the strut area doesn't really look "fresh" unless you wiped all the dirt into the cracks and the chipped out gelcoat area is stained.

[TeamAllen]

I would bet that red packing is a rope that got tangled up at point.

[Illiana]

Thanks for all the feedback guys. Mike, it almost was like i hooked a cable or rope which brought to almost imeediate stop and nose of boat took on just a bit of water.

Koolaid, rudder definitely took a shot but i dont understand how prop could have missed the hit. Im thinking the first hit may have been on shaft right in front of strut and somehow prop didnt take straight shot. Im just worried because i dont know if the prop with how it looks would make such a terrible vibration at very low rpm. I never tried to rpm up to see if it evened out bc the vibration was really really bad. I wiped with hands but no cleaning. I remember some webbing but no chunks missing. Plus that crackkng is at back of strut and if strut took the shot id think the front would break away first as i was moving forward. That being said, i did wipe it and the boat and lake are quite dirty.

The cracked area is solid under the white part, it doesnt go through all the way. Im no fiberglass guy but i can mix epoxy and finger it on like a champ. This boat has been unstoppable so far with basic maintenance and fuel pump last year. Dying to get back on water.

What is best place to order that prop? Is there any old school, hang it on nail ttpe tricks to see if prop is way out of balance or is it more pitch related? Should I throttle up and see if it smooths at and report? Or just start with prop and move forward? Closest shop worth a **** is about 1.5 hours away and not sure if open tomorrow. Thanks.

[Ruger761]

Koolaid Id agree that the cracking looks older. For sure you need to get the red stuff out of the strut or it will eat your bearings up if it hasn't already done so. So don't run it any more than you have to until you get that stuff out. Something has to be off Prop, shaft, bearing as I don't think you would get a bad vibration as described with only the rudder damage shown.

[Illiana]

Ill go pull on the strut and see if there is any movement. Shop closed tomorrow and dont have prop anyways. Nothing really looks that bad so im thinking prop is messed up but cant see it by eye. I hope thats all.