How deflate avon dinghy?

[Sailingsaves]

The dinghy has these old style valves. EDIT here is link to google image:

http://valves.polymarine.com/wp-content/uploads/2010/06/386910-a4-lr.jpg

To be honest, I was in a rush to deflate a boat I just bought for peanuts. I inserted my finger and pushed down on the springy thing and got most air out, but nowhere near as good as modern seals where you can even suck air out to really pack boat away.

What am I doing wrong?

With these old valves is it possible to SUCK air out (as can do with modern valves and the two way stirrup pumps)?

Thanks

 

[Talulah]

You have to push the valve spring in and then rotate it. The valve will then stay open so you can suck air out..

 

[Sailingsaves]

You have to push the valve spring in and then rotate it. The valve will then stay open so you can suck air out..

Sorry, forgot to post picture of the old valve. What you suggest is the new valves.
Will post pic now.

 

[Sailingsaves]

Okay, just read the page where I found image, apparently deflator is to use one of the metal clips (or both?) to push down the metal bit inside cap?

Have not got boat to hand. I guess this means sucking air out is not possible, so you just roll boat up whilst holder metal pin in place?

http://valves.polymarine.com/?page_id=40

 

[Talulah]

Well that looks annoying. Just how old is your Avon?

 

[CaptainBob]

Our old Avon had those valves. As you say above you're supposed to use those stainless steel 'U' pieces poked in to hold the valve open while you roll it up. Don't think you could use a suction pump with them in place but we didn't ever have an issue with the clips... except when we lost a few of them in a storm after our dinghy became a spinning kite monster. Replacement cost was high but someone suggested artificial wine bottle corks wrapped with amalgamating tape as replacements (which worked well and are still going strong with their new owner).

 

[VicS]

The old Avon pumps ... the ones made of plywood and Hypalon fabric that were supplied with dinghies fitted with the old A4 valves had the facility to suck as well as blow .

Presumably it was intended that they could be used to suck the air out.

I guess if you stick the Jumbo hairpin into the valve then insert the pump connector it will hold the hairpin in and the valve open.

We never did it though ... "we" were afraid that the hairpin might puncture the dinghy. Unfounded I think ... but you do as the skipper says and we always removed the hairpins from the valves before finally rolling it up and stowing.

 

[colhel]

I have the same valves and as others have said use the stainless U wire. I have Rule pump and this comes with an adaptor to inflate and deflate. Its basically a tube with 3 cut outs to replace the wire.

 

[Sailingsaves]

I have the same valves and as others have said use the stainless U wire. I have Rule pump and this comes with an adaptor to inflate and deflate. Its basically a tube with 3 cut outs to replace the wire.

Thanks everyone.

Time to hit the 3-D printer and make something to fit pump.

REF pump - Yes it came with the old style pump - I love the design - so simple.
But I cannot see how it can suck.
It looks like this one:
http://i.ebayimg.com/00/s/NzY4WDEwMjQ=/z/R3oAAOSwq5lTnY2n/$_79.JPG

And the hose is attached to pump via self amalgamating tape.

Was the hose originally supposed to be free to move from the plastic outlet to the hole in the wood?

Thanks

 

[sailorman]

The dinghy has these old style valves. EDIT here is link to google image:

http://valves.polymarine.com/wp-content/uploads/2010/06/386910-a4-lr.jpg

To be honest, I was in a rush to deflate a boat I just bought for peanuts. I inserted my finger and pushed down on the springy thing and got most air out, but nowhere near as good as modern seals where you can even suck air out to really pack boat away.

What am I doing wrong?

With these old valves is it possible to SUCK air out (as can do with modern valves and the two way stirrup pumps)?

Thanks

Get a Hi-Lo 12v pump ( LVM ) to suck it as flat as a witch`s T*t

 

[pvb]

Was the hose originally supposed to be free to move from the plastic outlet to the hole in the wood?

I've never seen an Avon plywood/hypalon pump which could suck. The hose fits on a plastic moulding which is screwed to the plywood.

 

[VicS]

Thanks everyone.



REF pump - Yes it came with the old style pump - I love the design - so simple.
But I cannot see how it can suck.
It looks like this one:
http://i.ebayimg.com/00/s/NzY4WDEwMjQ=/z/R3oAAOSwq5lTnY2n/$_79.JPG

And the hose is attached to pump via self amalgamating tape.

Was the hose originally supposed to be free to move from the plastic outlet to the hole in the wood?

Thanks

You are right it does not suck. I was muddling it up with the more modern replacement and/or the one I had with a cheap inflatable.

 

[Sailingsaves]

You are right it does not suck. I was muddling it up with the more modern replacement and/or the one I had with a cheap inflatable.

Yes, but no but, yes but.....

Let us say I get another hose and make a fitting to go in wooden hole (where there is a one way vale (simple flap of rubber). Let oulet hose fly free.
Fit my new hose into hold in wood and other end on boat valve (one that allows freeflow of air)

When I press pump, it will blow air out of free flying hose.

As pump expands, it will suck air in via the diy hose attached to hole in wood IF the spring is powerful enough.

So, you may be right Vic !

Worth a try eh?

I still love the design, so simple AND still working after goodness knows how many years.

cheers

 

[sailorman]

Yes, but no but, yes but.....

Let us say I get another hose and make a fitting to go in wooden hole (where there is a one way vale (simple flap of rubber). Let oulet hose fly free.
Fit my new hose into hold in wood and other end on boat valve (one that allows freeflow of air)

When I press pump, it will blow air out of free flying hose.

As pump expands, it will suck air in via the diy hose attached to hole in wood IF the spring is powerful enough.

So, you may be right Vic !

Worth a try eh?

I still love the design, so simple AND still working after goodness knows how many years.

cheers

Re read #10. look on fleabay for one
http://www.ebay.co.uk/itm/LVM-HI-SP...at_Engines_EngineParts_SM&hash=item4171c7e41e
But not at that price

this is what came with my Zodiac
http://www.ebay.co.uk/itm/5-Litre-F...Goods_Camping_Accessories&hash=item2a3d1fb991

 

[Sailingsaves]

Re read #10. look on fleabay for one
http://www.ebay.co.uk/itm/LVM-HI-SP...at_Engines_EngineParts_SM&hash=item4171c7e41e
But not at that price

this is what came with my Zodiac
http://www.ebay.co.uk/itm/5-Litre-F...Goods_Camping_Accessories&hash=item2a3d1fb991

Thanks:

Read #4 to #6 inclusive. The pump is not the issue (I do another pump like this):

http://www.mailspeedmarine.com/infl...bravo-4-alu-red-high-pressure-hand-pump.bhtml

Jolly good it is too. Even used it to pump water once.

The valve is the issue. It was not designed to be sucked upon.

But I have just made a clip on the 3-D printer to solve that, so I can now suck the old valve and get it as flat as a witches tit.

Shame there are not more dinghies with these old valves, I could make some money with this little clip.

 

[sailorman]

Thanks:

Read #4 to #6 inclusive. The pump is not the issue (I do another pump like this):

http://www.mailspeedmarine.com/infl...bravo-4-alu-red-high-pressure-hand-pump.bhtml

Jolly good it is too. Even used it to pump water once.

The valve is the issue. It was not designed to be sucked upon.

But I have just made a clip on the 3-D printer to solve that, so I can now suck the old valve and get it as flat as a witches tit.

Shame there are not more dinghies with these old valves, I could make some money with this little clip.

The Hi=Lo has an adaptor to hold the valve open

 

[onesea]

You really do not need to suck the air out it my answer... I have never found it any faster unless you have a super dooper electric pump.

1) Stick the prongs of the U bit into the valve.
2) Wait a short whist till the tubes are soft, fold in half length ways let the air drop some more,
3) Fold in half longitudinally sit on for short whilst,
4) Flick open fold tubes in wards so they are inline with floor and meet in the middle,
5) Roll up.

It sounds long winded but really is not that bad. The fun thing with that valve types was changing the black plastic mushroom if that ended up dieing.

If the dinghy goes soft make sure you have the bungs in they where terrible for having slow leaks...

 

[Sailingsaves]

Thanks,

Are you saying the Hi-Lo has an adaptor for the old style of valve? That is impressive.

 

[sailorman]

Thanks,

Are you saying the Hi-Lo has an adaptor for the old style of valve? That is impressive.

yes, it has various adaptors

 

[Sailingsaves]

You really do not need to suck the air out it my answer... I have never found it any faster unless you have a super dooper electric pump.

1) Stick the prongs of the U bit into the valve.
2) Wait a short whist till the tubes are soft, fold in half length ways let the air drop some more,
3) Fold in half longitudinally sit on for short whilst,
4) Flick open fold tubes in wards so they are inline with floor and meet in the middle,
5) Roll up.

It sounds long winded but really is not that bad. The fun thing with that valve types was changing the black plastic mushroom if that ended up dieing.

If the dinghy goes soft make sure you have the bungs in they where terrible for having slow leaks...

Thanks.
When I did pretty much what you described, it was difficult to fit back into bag.

I don't like leaving the metal pins in whilst squashing in case of puncture, but now I have made a clip that replaces the pins I can leave it inserted and roll and squash away as you describe.

Fitted in the bag with room to spare.

I could suck it now that I have made the clip, but just inserting clip and rolling boat up expels enough air as you say.

The plastic clip I made is just a bit safer regarding puncture. I have never used my vernier calipers so much since I made this 3-D printer. Measure, CAD, print and 30mins later you have a useful object.