Skin fittings

[Jim]

I am trying to fit an electric pump to my Taran before I go on holiday but none of the chandlers seem to sell a reasonable skin fitting for kayaks these days.

I need something that will take a 19mm (3/4") bore hose that doesn't need a 1-1/2" hole in the boat and stick in 6" to accommodate a sandwich yacht hull and the 25mm section of a dual size hose tail..... Anyone seen such a thing recently?

I've been to several chandlers, the plumb centre, homebase, local industrial suppliers, all over the internet and I still can't find what I want.
At this rate I'll have to make one but I don't really have time......

[Dave28]

marinemegastore.com seem to have both straight and 90 degree angles.

[Yakdiver]

Brass/stainless has a smaller diameter they do other sizes as well
http://marinestore.co.uk/ES49052.html

[Jim]

marinemegastore.com seem to have both straight and 90 degree angles.

Not sure I trust marine megastore, my last order with them took months to complete. Also despite the large number of fittings some are repeated several times, but more importantly the photos don't necessarily show the exact fitting - the same photo is used for the 3/4" hose fitting as the 1-1/2" hose fitting.
Guess what? The outer end looks the same as the one I have so guess the photo is of at least the 1" type but more likely the 1-1/2"....

I had a look at brass fittings today and they weigh nearly as much as my entire boat, and are bigger than you would expect from the online photos.

I think I'll get busy with my lathe, anyone know if BSP has a 60 deg flank or 55 deg?

[Darksideup]

British SP therefore 55 deg flank angle.

[Beachcomber]

Hi Jim,

We fitted pumps in some Tahe Greenland T recently and used bulkhead connectors for electrical conduit (20mm). We shoved a small piece of conduit into each connector and fitted the hosing over this. It fitted very neatly and avoided the large depth required for the commercial skin fittings:









Rgds,
Steve

[Beachcomber]

Oops ... looks like there was a problem with images in my previous posting:

[Curly67]

What pump are you using Jim? This is a job I need to tackle soon!

[Jim]

What pump are you using Jim? This is a job I need to tackle soon!

I am using a rule 500GPH submersible which has a 19mm (3/4") hosetail.

My interim solution (which worked fine last week) was to use an M20 IP68 cable gland with the locknut on the outside of the boat and the hose (softened in hot water) pushed over the 20mm thread (outer nut and rubber gland removed). Quite compact and seems to work OK.

I did however find another alternative in Menai Marine which I may switch to at some point, it's a skin fitting for 1/2" hose, which also has an M20 thread but this time I would get a tidy fitting on the outside and more of the thread inside to push the hose onto. The actual 1/2" hosetail will be redundant, may hacksaw it off or just leave it depending on how it affects the route of the hose. I already have a 20mm hole in my boat so it would be a direct swap over.

Some points to note:
- Taran bulkhead is pretty close behind the seat so not many places to fit the outlet. If you fit it in the deck it will probably squirt at you because the only flat area slopes forward. If you put it in the hull don't forget to feel around the internal seam to find a flat spot - it seems to be slightly lower then the external seam.
- Position pump in front or behind the seat? I think behind the seat is best (out of the way and should be close enough to the lowest point) but after swamping during a surf landing the other day I noticed that the seat is so well sealed to the hull that is forms a weir to the height of the seat back so the pump only emptied a few litres - DOH! I think there is easily room for a 20mm hole in the front of the seat to allow water to drain aft.

Have fun!

[downunder]

Something like this may do the job. Its similar to what I use.

Cheers

Bill