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-   -   Had shortie fall off (https://www.offshoreonly.com/forums/drives-lower-units/161601-had-shortie-fall-off.html)

dirtycarr 06-22-2007 06:52 AM

Had shortie fall off
 
Has anyone ever had this happen? It looks to me that the front 2-bolts lossened up and pulled out there is about 4 thread missing on each side off the front studs. Then the pressure from the water snapped the back two right off. (back being the one's by the prop) I just had these put on last friday and have only used the boat twice so far....... We have a diver going out to try and find the shortie/gears/prop. I do not believe I hit anything........ Has anyone seen this happen b-4?

articfriends 06-22-2007 07:41 AM

HOLY ****, I have had uppers and lowers apart a million times and never had one rip off,the threads must have been half pulled out or you hit something and didn't realize it. Mcollinstin (sp?) had a buddy a few years ago who's studs broke on a b-max that held the upper to the lower but I don't think it fell off,Smitty

hoozeyurdaddy 06-22-2007 07:41 AM

water pressure could not have made the shorty come off, the prop is pushing forward on the bottom of the shorty with the intention of over comming the water pressure, sounds like impact. you would have to be throttled up in reverse to do what you discribed.

John the Drive Man 06-22-2007 07:47 AM

Yes, almost had the same problem. The studs are to short. Put in longer studs, like used on the TRS housing. You will have more thread used when bolting the halves together. And use a drop of loctite on each of the nuts and you won't have anymore problems. It seems all the studs are to short on all shorties.

dirtycarr 06-22-2007 08:05 AM


Originally Posted by John the Drive Man (Post 2172734)
Yes, almost had the same problem. The studs are to short. Put in longer studs, like used on the TRS housing. You will have more thread used when bolting the halves together. And use a drop of loctite on each of the nuts and you won't have anymore problems. It seems all the studs are to short on all shorties.

I agree with you longer studs! Thanks. I really do not think I hit anything. But, I guess we will see when we find the shortie.

handfulz28 06-22-2007 12:09 PM

I thought it was slang for losing his girlfriend overboard :D

dirtycarr 06-22-2007 01:42 PM

I wish it was only my girl friend! I am so pissed! I hope the guy I bought'em from and installed them stands behind it!

t500hps 06-22-2007 01:52 PM

He will stand behind them.........while he's telling you that you must have hit something and I'll sell you another one!!!! :D

tblrklakemo 06-22-2007 03:15 PM

Maybe the bolts were over torqued, thus stripping off enough material to let all the different forces on the drive do their thing.

monstaaa 06-22-2007 07:24 PM

possibly the studs were not changed during the install, or were installed improperly.

Downtown42 06-23-2007 08:26 AM

if you hit something, you know.

Sydwayz 06-23-2007 09:28 AM

I had a drive put together and while the nuts where tightened as much as you could, the studs were only barely finger tight. With a light loosen on the nuts, the studs would just spin right out. Make sure the studs are in 'guudenteight' before you install the lower.

dirtycarr 06-23-2007 05:55 PM

I have a diver going out tommorrow to try and find....... I am sure it's like a needle in a hay stake! Atleast I have my tracks on my gps to help.

Johno 06-23-2007 07:46 PM

Did't the same thing happen on A Poker Run last Summer here in Fl ?

racesdad 06-23-2007 08:05 PM

yes it happens when the studs or nut fail, being removed too many times and not replaced. i was racing next to the old zipp express when BOTH lowers came off.
it does happen, always check and replace nuts and studs

hoozeyurdaddy 06-24-2007 08:26 AM

I'm not saying that you hit something, I'm just not clear on how water pressure on the front of a drive is greater than the pressure the propeller creates on the back of the lower, I would think the back 2 bolts failed first and then ripped the front 2 out. In normal operation with the drives in the water all the stress is going the other way.
or am I missing something here? Help me under stand.

dirtycarr 06-25-2007 07:25 AM

No luck with diver.......:( I have taken a bunch of picture's as I didn't hit anything. The bottom of my boat shows No signs of hitting anything. If would of hit something I believe I would have known it! The front two being the two closet to the boat did not rip out! The holes look factory new on top......so once again prof to me that I didn't hit any thing. The middle set pulled out about 3-thread length's. That tell's me that the where either loose or not in far enough. And then the back two by the prop are the two that snapped off. Which I would think would happen being as the where the only two actually holding.

AIR TIME 06-26-2007 09:38 PM

that sucks I know how you feel,someone stole my new drive and shortie in march with my steering ram, and trim rams and other stuff. I am having a brand new drive with a shortie being put together soon. this time with drive locks:mad: . I left the old one off:rolleyes: because I was testing at the end of last season only put 5 hours on the old set up. good luck art

dirtycarr 06-30-2007 01:07 PM

my shortie was found. Unharmed and in good condition by the guy who installed them in the location I brought him to and showed him where it happened. I really appreciate his help in finding it. He defintely put in some O/T in helping find it. The prop had a blade missing...... I guess from over trimming it is what he is telling me. My question is would throughing a blade cause this to happen? I don't know??? Myself. But, I have thrown a blade before and this certainly did not happen. The two studs towards the back of the boat are snapped, the middle two pulled out about three threads on each side, and the front two towards the boat snapped as well. Has anyone one ever seen this happen?

articfriends 06-30-2007 02:17 PM

Thats great news,now buy some new studs and loctite them:evilb: ,Smitty

88formula223 06-30-2007 03:07 PM

wow at least you found it

bmacgyver 07-05-2007 07:10 PM

3 Attachment(s)
Fell off???!!!!! Pictures are worth a thousand words.....shall we?

AIR TIME 07-06-2007 01:32 AM

wow glad you got yours back art:D

roadrunner 07-08-2007 09:39 AM


Originally Posted by bmacgyver (Post 2188394)
Fell off???!!!!! Pictures are worth a thousand words.....shall we?

What did you hit??? One blade two snapped stud two nuts
still there uhmm!

ragtop409 07-22-2007 04:15 PM

I cant belive you found them! That is f'in amazing! but that prop is nasty looking!

Rag's

MOBILEMERCMAN 07-22-2007 05:08 PM

I have seen outboard cases come loose, break studs and come in hanging by a thread. Like John the drive man said make sure they studs are long enough, locktite them in and tighten all fasteners evenly. Throwing a blade will cause a vibration that will shake things to pieces. Lucky you found case.
Jim


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