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Old 03-04-2019, 08:01 AM   #1
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chassis cracks, cruiser rv funfinda

Hi
Has anyone come across cracks in the main chassis I beam just in front and behind the wheels, on both sides, horizontal cracks, pretty much in the middle of the web along gusseting or lateral support beams, seem to be caused by lateral forces rather lengthwise flexing.
if so any joy in fixing them?
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Old 03-04-2019, 11:53 AM   #2
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Sounds like maybe a frame modification gone bad or not done right in the first place. Are you sure they are actual cracks or maybe just where the paint may be flaking from where they painted over the modification? Got a couple pics you can post of it?
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Old 03-04-2019, 01:12 PM   #3
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Some pictures would be really helpful...
IMHO you don't fix cracked frames: you replace them.
But I always try to err on the side of caution...
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Old 03-04-2019, 01:20 PM   #4
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You spray over cracked frames and trade it the same day. Granny's camper that only got driven to church and the grocery store once a week...God rest her soul!
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Old 03-04-2019, 01:30 PM   #5
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Originally Posted by williedropem View Post

.....cut..... seem to be caused by lateral forces rather lengthwise flexing .....cut.....
Not necessarily — depends on entire design and loading. Lots of pictures from different angles at all failure points may help.
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Old 03-04-2019, 03:30 PM   #6
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You spray over cracked frames and trade it the same day. Granny's camper that only got driven to church and the grocery store once a week...God rest her soul!
I'll bet that the used car salesmen in your hometown were terrified of your Granny!
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Old 03-04-2019, 08:29 PM   #7
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Some pictures would be really helpful...

IMHO you don't fix cracked frames: you replace them.

But I always try to err on the side of caution...
Very serious deal if is cracked

I have stretched, shrank and fixed frames using fish plate and bolts

It is very time consuming and expensive as you need good access

I doubt if it would return the investment on a coach unless it is fairly valuable

Probably total loss if it is cracked through
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Old 03-04-2019, 08:53 PM   #8
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I assumed the Cruiser Fun Finder is a trailer. Mention of “I-Beam” chassis reinforced it for me. Hope that’s right.
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Old 03-04-2019, 09:53 PM   #9
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I assumed the Cruiser Fun Finder is a trailer. Mention of “I-Beam” chassis reinforced it for me. Hope that’s right.
Sure could be, then it would be repairable, probably welded in place
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Old 03-04-2019, 10:24 PM   #10
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Old 03-04-2019, 10:31 PM   #11
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Thanks for the missing piece of the pie!
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Old 03-05-2019, 07:40 AM   #12
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Nice to see such interest in such a short time, thanks to all of you who have taken the time. I met a guy on a camp ground a couple of days ago who told me about this forum, thought I'd give it a try.
Yes the cruiser rv funfinder X189 is a double axle caravan, about 6.0 mtrs long, the cracks(and they are cracks) are just in front and behind the wheels, same place on both sides along welded gussets and behind cross members on the main frame I beams, the van doesn't appear to have been modified, I welded the cracks up yesterday(just gouged out and stick weld) as we are going away later this week for quite a long trip so I didn't want to risk it getting worse.
when we get back next week I will take photos and post them, don't like the sound of the possibility of having to replace the whole chassis, I'm sure the cracks could be patched if they come back through the weld.
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