[Rhodes22-list] Trailer Extension Replacement

[ROGER PIHLAJA]

Hi All,

The stiffness of a rectangular tube is proportional to the [Tube Wall Thickness]^3.  That means the stiffness would be VERY sensitive to loss of material due to corrosion.  The situation would be even worse if there was localized corrosion, say due to pitting or a low spot that caused salt water to pool.  Besides flushing after every salt water immersion, you might want to consider running a rag soaked in a corrosion inhibiting oil, like gun oil, thru that tongue extension.

When the tongue is extended, the tongue weight is much lower.  For example, my trailer’s tongue weight is about 327 lbs with the tongue not extended.  With the tongue extended, I’ve never measured it.  But, it’s low enough; that, I can lift the tongue with one hand.

Roger Pihlaja
S/V Dynamic Equilibrium


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From: Michael D. Weisner<mailto:mweisner at ebsmed.com>
Sent: Thursday, May 27, 2021 6:28 PM
To: 'The Rhodes 22 Email List'<mailto:rhodes22-list at rhodes22.org>
Subject: Re: [Rhodes22-list] Trailer Extension Replacement

I just figure on replacing the extension tube every 20 years or so since
it's not that expensive and I'm not sure that rinsing will help.

Mike
s/v Wind Lass ('91)
Nissequogue River, NY
I'd rather be sailing :~)

-----Original Message-----
From: Rhodes22-list <rhodes22-list-bounces at rhodes22.org> On Behalf Of Chris
on LBI
Sent: Thursday, May 27, 2021 6:03 PM
To: rhodes22-list at rhodes22.org
Subject: Re: [Rhodes22-list] Trailer Extension Replacement

I replaced my extension and learned a couple of things.
1) In another thread there has been a discussion about tongue weight. I had
assumed that since I was successful at positioning the boat fully forward on
the bunks for the first time (on the previous three retrievals, the bow was
about 3" back from the bow-stop), that my tongue weight must have been too
great, causing the extension to buckle. However, with the bow in contact
with the bow-stop, my tongue weight is only 215 lbs. (so less than the
ballpark 350 lbs. target weight). Excessive tongue weight did not cause the
failure.
2) When I stood the old tongue extension on end and banged the rust out of
the inside of the tube, I collected about 10 pounds of rust. Of course this
was all rust that used to be part of the tube structure. Most of it seemed
to come from the aft side of the tube; that is, the part that bears the
tongue weight when extended. I conclude that I need to be sure to rinse the
inside of the extension thoroughly each time I use it (twice a year) since
we launch and retrieve in salt water.



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Long Beach Island
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