Arneson's, They break too......

Unless I'm missing something, it seems like this is newsworthy precisely because it happens so rarely. It seems that it could only have been lateral forces or shear forces that broke it in that way. Rotational or torque force couldn't be responsible as most all propeller thrust in an Arneson gets transferred to the transmission/engine. I may be negating the effects of prop lift on the unit. What does the race crew have to say about it?
 
You have guts posting that I'm sure one of the Arneson cheer leaders will have a good explanation for us.

The Bmax on the National Guard boat worked flawlessly all year with a 750 super cat in front of it. :driving:

I'll stack reliability against yours any day.
 
Unless I'm missing something, it seems like this is newsworthy precisely because it happens so rarely. It seems that it could only have been lateral forces or shear forces that broke it in that way. Rotational or torque force couldn't be responsible as most all propeller thrust in an Arneson gets transferred to the transmission/engine. I may be negating the effects of prop lift on the unit. What does the race crew have to say about it?

The nut on the trim cylinder backed off and the piston dropped out of the cylinder, rest is
 
I noticed the cylinder with the cap still on but the rod gone. It reminded me of a piece of equipment we had. It had a cylinder that lost the rod nut several times. Finally after paying the factory guy to fix it several times I asked why it kept breaking. He couldn't tell me. So I watched him fix it. He pulled the cap, put the piston back on and then screwed the nut on, using Loctite. He then immediately put it back together and bled the system. It occurred to me later that the Loctite never had time to cure. Which led me to wonder why they didn't use a locknut in the first place- or even just stake the plain nut.

I also wondered how something that received no twisting force was unscrewing, but that's beyond my understanding.
 
Sounds like a cuss, popcorn and beer moment.:cuss::cuss::cuss::lurk5::lurk5::lurk5::lurk5::cheers2::cheers2::cheers2:
 
All I can think of is vibration on the piston nut. It cannot happen twice as the nut will be remedied. This is the first year with the Arnesons they purchased (used) and they love them. The boat had Bravo's originally, then due to reliability they went to MK#6's and then to Arnesons. The Arnesons out turn and handle both the Bravo's and #6's. They have increased their entry speeds into the turns by 20 mph they claim.
 
Rik, it sounds like the fix is simple- per C35 and Pete B. Safety issues aside, I'm amused by some of the drama that ensues over these kinds of happenings.
 
Rik, it sounds like the fix is simple- per C35 and Pete B. Safety issues aside, I'm amused by some of the drama that ensues over these kinds of happenings.

Some have an agenda which is beyond necessary when apparently they need to take care of their own issues first. But this is the internet
 
sheeet thats it then, if I can't believe what I read on the internet then I can't believe anything.
 
sheeet thats it then, if I can't believe what I read on the internet then I can't believe anything.

Come on now, I just love in particular what an 18 yr old with a "Bayliner 19' powered by a Chrysler out board" has to tell an owner of a new 48 MTI with Merc 1350's. I find it really insightful
 
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