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Old 10 April 2017, 10:33   #41
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I will go along with the theory on the casting.... I will try and dig up my old thread when it happened to me.... it shows some pics of the break and what look like air holes in the break itself . I'm at the hospital at the moment " don't ask " so will get to it later.
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Old 10 April 2017, 10:42   #42
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" don't ask " .


What's up
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Old 10 April 2017, 10:50   #43
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Originally Posted by tony t View Post
What's up
You wouldn't understand yer not a Fissure man...
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Old 10 April 2017, 10:57   #44
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You wouldn't understand yer not a Fissure man...


Neither are you ..!
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Old 10 April 2017, 13:05   #45
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Quote:
Originally Posted by Phil M View Post
I've been thinking about the spacer/packer theory and I can't reconcile it as the cause of the failure. The most force is exerted by the prop which pushed the gearcase forwards, putting tension into the top bolts whilst pushing forward on the bottom of the saddle. The exact load path is transferred through the various pivots and trim cylinder, but ultimately acts on the transom bracket as described. Under power the top of the bracket will tend to be pulled away from the transom and packer, thus the packer is not supporting the bracket unless you drop the throttle and the prop acts as a brake, as per my very crude diagram (Blue arrows represent forces).

Attachment 118916

Also, the bracket design doesn't look like it is meant to sit on anything, otherwise there would be a flat section for it to contact the top of the transom, whereas it is all curved.

I could also go with a theory that if the engine is mounted higher, the top bolts are lower down the bracket so the bending stress in the bracket is higher (greater moment) and thus it may lead to a failure. Yours looks to be on the top hole, so there goes that theory.

It may also, of course, all come down to manufacturing defects in the casting which act as stress raisers and lead to fatigue failures. A problem with the casting material flow could lead to porosity in certain areas of the casting, which then lead to a failure. Can you get a close up photo of the failure, ideally one of each side of the split, with the two separated? A fatigue crack has tell tale marks and it may be possible to spot the failure initiation point, which may be a material defect.

I may be wrong and happy to hear other theories. I used to do this sort of investigation at Caterpillar, years ago and always love a failure to get to the bottom of.

Phil M
Page 2 & 3 are some pictures Phil the one on page 3 which Hadd posted is one of the better ones :thumbup:

Aircraft in tow

and here....

Broken Transom Saddle.
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Old 10 April 2017, 14:11   #46
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i cannot get anymore pictures at the moment as its at powerhouse marine . will ask to keep all the pieces this time . the first break was at the pivot point of the trim and tilt . i didnt realise it was broken when i was out .the trim gauge stopped working because the engine had bent and smashed the plastic lever which moves the gauge . i do go out in big seas but i expected the engine to be able to take it .i thought the the transom on the boat would be the weak point .
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Old 11 April 2017, 05:13   #47
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does anyone ever think about reporting this issue to the evinrude product manager karl sandstrom ?
in the past, due to broken oil tanks on e-tec i2 and i3, distributor in Tr was behaving rude, i found the contact info of karl sandstrom from linkedin, and report the issue to him.
he was so interested about topic, i share photos with him.
after 1.5 year heard that distributor started to engine recals to change oil tank.
this is an interesting issue to be reported.
two stroke mike seems to be the one who work over the issue and has nice photos about the faillure . kerny also has the same experience.
please think about it
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Old 11 April 2017, 13:37   #48
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Agree with what's said but would add there's a lot of twisting moments with steerage and trim angle on the bracket.
Also when I was at a dealers recently he said my engine should be hung with a air gap between transom and bracket reading my engine manual it should rest on the transom as I have it.
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Old 11 April 2017, 16:39   #49
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Fairly new on here but can,t believe any engine can fail like that for no reason ,who could claim that's fit for purpose , I see the post time and think it must be April Fool , either that or the manufacturer is ,
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Old 13 April 2017, 12:38   #50
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latest news from evinrude they say it happened through misuse as the edge of the prop has paint missing and bottom of leg has paint missing which could have been caused hitting a sand bank . it is caused by winching rib off the beach onto trailer . think evinrude are talking shite . will try and post pictures
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