[Rhodes22-list] Trailer Extension Replacement

[Michael Weisner]

“Give me a lever long enough and a fulcrum on which to place it, and I shall move the world." - Archimedes.Mikes/v Wind Lass ('91)Nissequogue, NY
-------- Original message --------From: ROGER PIHLAJA <roger_pihlaja at msn.com> Date: 5/28/21  7:49 AM  (GMT-05:00) To: The Rhodes 22 Email List <rhodes22-list at rhodes22.org> Subject: Re: [Rhodes22-list] Trailer Extension Replacement 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 PihlajaS/V Dynamic EquilibriumSent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10From: Michael D. Weisner<mailto:mweisner at ebsmed.com>Sent: Thursday, May 27, 2021 6:28 PMTo: 'The Rhodes 22 Email List'<mailto:rhodes22-list at rhodes22.org>Subject: Re: [Rhodes22-list] Trailer Extension ReplacementI just figure on replacing the extension tube every 20 years or so sinceit's not that expensive and I'm not sure that rinsing will help.Mikes/v Wind Lass ('91)Nissequogue River, NYI'd rather be sailing :~)-----Original Message-----From: Rhodes22-list <rhodes22-list-bounces at rhodes22.org> On Behalf Of Chrison LBISent: Thursday, May 27, 2021 6:03 PMTo: rhodes22-list at rhodes22.orgSubject: Re: [Rhodes22-list] Trailer Extension ReplacementI replaced my extension and learned a couple of things.1) In another thread there has been a discussion about tongue weight. I hadassumed that since I was successful at positioning the boat fully forward onthe bunks for the first time (on the previous three retrievals, the bow wasabout 3" back from the bow-stop), that my tongue weight must have been toogreat, causing the extension to buckle. However, with the bow in contactwith the bow-stop, my tongue weight is only 215 lbs. (so less than theballpark 350 lbs. target weight). Excessive tongue weight did not cause thefailure.2) When I stood the old tongue extension on end and banged the rust out ofthe inside of the tube, I collected about 10 pounds of rust. Of course thiswas all rust that used to be part of the tube structure. Most of it seemedto come from the aft side of the tube; that is, the part that bears thetongue weight when extended. I conclude that I need to be sure to rinse theinside of the extension thoroughly each time I use it (twice a year) sincewe launch and retrieve in salt water.-----Long Beach Island--Sent from: http://rhodes-22.1065344.n5.nabble.com/