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Step 10Inflatable black natural rubber sausage
The inflatable suite is optionally used : when extreme stability is required, the small boat is transformed into a "giant" (hehehe) trimaran.
The inflatable sausages are made of black natural rubber, shinny 3mm thick sheet. I recommend to draw everything before cutting with white corrector.
1 _ polishing everywhere the neoprene glue will be involved : ON BOTH SIDES ! I started with sand paper but, seriously, if your rubber sheet is thick enough, use a machine (+ glasses + dust mask, this black dust can be terribly hot and sticky!)
2_Cut the hole where the cap will be placed. You can buy the screw-down system in a boat shop, i wouldn't try building one myself, it realy has to be tightly closed. Don't put glue there, it won't enhance contact, leave it simple.
3_ In my case I realy needed strong handles to keep the sausages in the right place. I recommend to put many of them, because while there high pressure in it, it remains in position with some ropes, but if it starts to be too soft and fluffy, than it's difficult to handle it, you could even loose it ... I use heavy-duty nylon strap, to put at the extremities and to surround the body of the sausage.
Stick an intermediary layer to re-inforce the attach between the strap and the sausage, sew the 3 layers together whith a big leather needle. DON'T FORGET THE 4th LAYER, from the inside of the sausage, stick a thin sheet of rubber. I insit the inner surface must be polished carefully and a generous amount of neoprene glue must be included there.
4_ Position the sheet in order to glue all the polished surfaces, draw continuous lines of glue in the long direction, they will have to stop inner pressure. Shape the ensemble. Between the moment you have placed the glue on opposite sides and the moment you actually stick them together, time passes super quickly ... the more synchronised the 2 opposite sides are, the best (working with a friend makes this part a lot easier).
5_ Position the fitting flat to pressure it. This 5 step drawing indicates I have inserted a separation plastic PVC sheet inside the open tube to prevent the glue sticking un-desired surfaces. Although unpolished surface will hardly stick, preventing this case is faster than reparing, separating the sheets stuck together.
6_ Neoprene glue is very dependent on pressure, I use a long wood board to pressure the flat fitting homogeneously.
The neoprene technical handbook always pretend it dries quick, don't trust it, go to bed and work on it the next day if you can. Don't forget to leave the cap open, it will dramatically accelerate the drying process inside ! If you can roll the extremities and pressure them in a clamp, good.
7_ Pump !
note :
-Neoprene glue is very good, but I have noticed while navigating that when getting warm (and it happens fast with this big black exposed thing) my neoprene glue dilates and moves apart. The best solution I found was to stick-sew-stick but it's very long to build.
Sunhit increases the temperature in the sausage and the air (so the inner volume of air and pressure increases) : don't inflate your sausage too much : sunshine will do the work. I didn't use a unidirectional valve at the cap to prevent explosion.
-Natural black rubber is a very versatile material, easy to repair, easy to find, but it's very heavy and quite expensive. This boat pair of sausages weights about 25kg ! . If you have budget, don't dream about hypalon, buy it (with the reparation kit) super expen$ive but super nice (hypalon dreammmmms).
- This is my first rubber sausage, I'm sure there's better way to do it, let me know ! And have a look at this.
The inflatable sausages are made of black natural rubber, shinny 3mm thick sheet. I recommend to draw everything before cutting with white corrector.
1 _ polishing everywhere the neoprene glue will be involved : ON BOTH SIDES ! I started with sand paper but, seriously, if your rubber sheet is thick enough, use a machine (+ glasses + dust mask, this black dust can be terribly hot and sticky!)
2_Cut the hole where the cap will be placed. You can buy the screw-down system in a boat shop, i wouldn't try building one myself, it realy has to be tightly closed. Don't put glue there, it won't enhance contact, leave it simple.
3_ In my case I realy needed strong handles to keep the sausages in the right place. I recommend to put many of them, because while there high pressure in it, it remains in position with some ropes, but if it starts to be too soft and fluffy, than it's difficult to handle it, you could even loose it ... I use heavy-duty nylon strap, to put at the extremities and to surround the body of the sausage.
Stick an intermediary layer to re-inforce the attach between the strap and the sausage, sew the 3 layers together whith a big leather needle. DON'T FORGET THE 4th LAYER, from the inside of the sausage, stick a thin sheet of rubber. I insit the inner surface must be polished carefully and a generous amount of neoprene glue must be included there.
4_ Position the sheet in order to glue all the polished surfaces, draw continuous lines of glue in the long direction, they will have to stop inner pressure. Shape the ensemble. Between the moment you have placed the glue on opposite sides and the moment you actually stick them together, time passes super quickly ... the more synchronised the 2 opposite sides are, the best (working with a friend makes this part a lot easier).
5_ Position the fitting flat to pressure it. This 5 step drawing indicates I have inserted a separation plastic PVC sheet inside the open tube to prevent the glue sticking un-desired surfaces. Although unpolished surface will hardly stick, preventing this case is faster than reparing, separating the sheets stuck together.
6_ Neoprene glue is very dependent on pressure, I use a long wood board to pressure the flat fitting homogeneously.
The neoprene technical handbook always pretend it dries quick, don't trust it, go to bed and work on it the next day if you can. Don't forget to leave the cap open, it will dramatically accelerate the drying process inside ! If you can roll the extremities and pressure them in a clamp, good.
7_ Pump !
note :
-Neoprene glue is very good, but I have noticed while navigating that when getting warm (and it happens fast with this big black exposed thing) my neoprene glue dilates and moves apart. The best solution I found was to stick-sew-stick but it's very long to build.
Sunhit increases the temperature in the sausage and the air (so the inner volume of air and pressure increases) : don't inflate your sausage too much : sunshine will do the work. I didn't use a unidirectional valve at the cap to prevent explosion.
-Natural black rubber is a very versatile material, easy to repair, easy to find, but it's very heavy and quite expensive. This boat pair of sausages weights about 25kg ! . If you have budget, don't dream about hypalon, buy it (with the reparation kit) super expen$ive but super nice (hypalon dreammmmms).
- This is my first rubber sausage, I'm sure there's better way to do it, let me know ! And have a look at this.
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