Fix rubber Tail cone to PVC joint

[titlerw]

I have an old Quicksilver PVC RIB that has rubber tail cones and at that joint I have two leaks. The leaks are simply from the adhesion giving way on the joint in two less than 1 cm places. I have searched high and low and have not found talk of this joint. So, does anyone have a recommendation on procedure and product to use. I think Stabond might work according to use cases I have seen. I am not sure if I should try to undue the entire seem with MEK or something. Or maybe just try to over patch the two small leaks. Or if marine silicone around the seem would likely do the trick. This is a boat I bought for my 10 year old to take out fishing so looks are not important.

Thanks much for the help

Bill T

[office888]

Post pictures.

[titlerw]

Couple of pics you can see the delam in the first and the second you really can not, but you can see the cone and PVC joint in both.

[office888]

Yeah, I can see the bubble.

You'll need to completely unglue and reglue the cones. The only thing holding the cone in appears to be about 1/2" of seam...the rest of the glue has failed.

I just did one like this. Took me about 4 hours.

FYI, this is not an easy repair. Do not attempt it unless you have a climate controlled gluing area you can work in. Even though, most shops would still have difficulty gluing it properly.

[titlerw]

What glue do you recommend for the PVC to rubber? The unglueing should be MEK?

[office888]

Originally Posted by titlerw

What glue do you recommend for the PVC to rubber? The unglueing should be MEK?

Use a heat gun for ungluing.

MEK is used as a prep solvent, and can also be used to remove old glue. I prefer to use Toluene for post-gluing cleanup since it will not burn the material like MEK does.

I will be doing the starboard side of the same boat before the week is out. I will take some pictures to share... Different model boat, but similar build type with bravo-scoprega end cones.

[Patch]

Mark your tape/cone join with a pencil before you remove it all the way round with location strikes across both.

It's not the easiest thing to do but if a RIB repair shop had difficulty with this they should probably consider another line of work.

[office888]

I hope this helps you.

The red is "China Marker"...basically, a water soluble wax crayon.




(oops, tore the coating on the seam tape a little...too much pulling, not enough heat! Oh well, I'll remake the seam tape a little wider anyways)