Re: Stus-List Fuel tank access port
Get some diesel-resistant gasket material from an auto store and make a gasket. Done deal. Dennis C. Touche' 35-1 #83 Mandeville,LA On Jan 23, 2015 6:06 PM, "Martin DeYoung via CnC-List" < cnc-list@cnc-list.com> wrote: > Calypso’s fuel tank inspection ports use a cut to size flexible fuel > resistant gasket, an aluminum sheet metal cover, and is through bolted. > > > > It has been 12 years since it was installed but IIRC the through bolt > fasteners are held in place with a split (1/2 dia each piece) aluminum > ring. I do not recall if the fasteners were welded in place, bonded in > place, or are a type of captured nut. I do recall that installation > required a medium amount for mechanical ability but well within most sail > boat owner’s skills. The assembly had not leaked as of the last time I > checked. > > > > McMaster Carr and several other sources sell various types of captured or > similar fasteners that would be easily adapted to something similar for > your tank. The ½ dia. rings would likely work well if fabricated out of > either aluminum, G10 (epoxy board), or other fuel resistant plastic. The > 1/2 rings do not need to be stout as they only hold the fasteners well > enough to be tightened (and loosened later). > > > > The cover should be thick enough not to distort. IIRC Calypso’s is at > least 1/8” but likely ¼”. The bolts have fender washers under the head > to spread out the clamping pressure. IIRC the gasket was at least 1” wide > to provide plenty of sealing surface. > > > > If you decide to through bolt your inspection port be very careful when > drilling the larger holes in the tank. Capturing the debris coming off the > drill bit is important. We used a combo of a shop vac and paper placed > inside the empty tank shaped to keep any loose filings from getting lost. > > > > Martin > > Calypso > > 1971 C&C 43 > > Seattle > > > [image: Description: cid:D1BF9853-22F7-47FB-86F2-4115CE0BAF2F] > > > > *From:* CnC-List [mailto:cnc-list-boun...@cnc-list.com] *On Behalf Of *Robert > Gallagher via CnC-List > *Sent:* Friday, January 23, 2015 2:57 PM > *To:* cnc-list@cnc-list.com > *Subject:* Stus-List Fuel tank access port > > > > Hello All, > > > > I have an '89 30 MKII. It has what I believe to be the original fuel > tank. The tank has two access ports. They look like they may have been > added, but could be original, not sure. > > > > Both ports are held closed with machine screws. The aft port does not leak > and I have yet to remove it. > > > > The forward access port weeps fuel. I removed the cover and found that it > appears to have been sealed with a black substance I'm guessing is permatex. > > > > I'm going to empty the tank and try to clean it without opening the aft > port (as it does not leak). > > > > The fuel looks OK and I don't see anything real nasty but there is some > black gunk at the bottom. So I'm gonna change it all and clean the tank by > hand. > > > > Question is: how and what should I use to re-seal the access port? > > > > Any hints would be greatly appreciated > > > > Rob Gallagher > > HANUMAN > > ___ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > ___ Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List Fuel tank access port
Calypso’s fuel tank inspection ports use a cut to size flexible fuel resistant gasket, an aluminum sheet metal cover, and is through bolted. It has been 12 years since it was installed but IIRC the through bolt fasteners are held in place with a split (1/2 dia each piece) aluminum ring. I do not recall if the fasteners were welded in place, bonded in place, or are a type of captured nut. I do recall that installation required a medium amount for mechanical ability but well within most sail boat owner’s skills. The assembly had not leaked as of the last time I checked. McMaster Carr and several other sources sell various types of captured or similar fasteners that would be easily adapted to something similar for your tank. The ½ dia. rings would likely work well if fabricated out of either aluminum, G10 (epoxy board), or other fuel resistant plastic. The 1/2 rings do not need to be stout as they only hold the fasteners well enough to be tightened (and loosened later). The cover should be thick enough not to distort. IIRC Calypso’s is at least 1/8” but likely ¼”. The bolts have fender washers under the head to spread out the clamping pressure. IIRC the gasket was at least 1” wide to provide plenty of sealing surface. If you decide to through bolt your inspection port be very careful when drilling the larger holes in the tank. Capturing the debris coming off the drill bit is important. We used a combo of a shop vac and paper placed inside the empty tank shaped to keep any loose filings from getting lost. Martin Calypso 1971 C&C 43 Seattle [Description: cid:D1BF9853-22F7-47FB-86F2-4115CE0BAF2F] From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Robert Gallagher via CnC-List Sent: Friday, January 23, 2015 2:57 PM To: cnc-list@cnc-list.com Subject: Stus-List Fuel tank access port Hello All, I have an '89 30 MKII. It has what I believe to be the original fuel tank. The tank has two access ports. They look like they may have been added, but could be original, not sure. Both ports are held closed with machine screws. The aft port does not leak and I have yet to remove it. The forward access port weeps fuel. I removed the cover and found that it appears to have been sealed with a black substance I'm guessing is permatex. I'm going to empty the tank and try to clean it without opening the aft port (as it does not leak). The fuel looks OK and I don't see anything real nasty but there is some black gunk at the bottom. So I'm gonna change it all and clean the tank by hand. Question is: how and what should I use to re-seal the access port? Any hints would be greatly appreciated Rob Gallagher HANUMAN ___ Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List Fuel tank access port
Hit send too soon. Replaced the original tank a year ago for somewhere around $200. Perhaps $250. Measure your old tank as Moeller makes many sizes and capacities. Best price was Amazon. It was a perfect size match. New sending unit included. Does away with issues of sealing leaks and cleaning trash. Ed C&C 34 Briar Patch New Orleans, La On Friday, January 23, 2015, Edward Levert wrote: > Moellermarine manufactures plastic tanks. $200+\- at Amazon and do away > with > > On Friday, January 23, 2015, Robert Gallagher via CnC-List < > cnc-list@cnc-list.com > > wrote: > >> Hello All, >> >> I have an '89 30 MKII. It has what I believe to be the original fuel >> tank. The tank has two access ports. They look like they may have been >> added, but could be original, not sure. >> >> Both ports are held closed with machine screws. The aft port does not >> leak and I have yet to remove it. >> >> The forward access port weeps fuel. I removed the cover and found that >> it appears to have been sealed with a black substance I'm guessing is >> permatex. >> >> I'm going to empty the tank and try to clean it without opening the aft >> port (as it does not leak). >> >> The fuel looks OK and I don't see anything real nasty but there is some >> black gunk at the bottom. So I'm gonna change it all and clean the tank by >> hand. >> >> Question is: how and what should I use to re-seal the access port? >> >> Any hints would be greatly appreciated >> >> Rob Gallagher >> HANUMAN >> >> ___ Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List Fuel tank access port
Moellermarine manufactures plastic tanks. $200+\- at Amazon and do away with On Friday, January 23, 2015, Robert Gallagher via CnC-List < cnc-list@cnc-list.com> wrote: > Hello All, > > I have an '89 30 MKII. It has what I believe to be the original fuel > tank. The tank has two access ports. They look like they may have been > added, but could be original, not sure. > > Both ports are held closed with machine screws. The aft port does not leak > and I have yet to remove it. > > The forward access port weeps fuel. I removed the cover and found that it > appears to have been sealed with a black substance I'm guessing is permatex. > > I'm going to empty the tank and try to clean it without opening the aft > port (as it does not leak). > > The fuel looks OK and I don't see anything real nasty but there is some > black gunk at the bottom. So I'm gonna change it all and clean the tank by > hand. > > Question is: how and what should I use to re-seal the access port? > > Any hints would be greatly appreciated > > Rob Gallagher > HANUMAN > > ___ Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go to the bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
