Deck Matrix

[mick]

Originally Posted by Poly

would vaseline or silicone grease be better than copper-slip? - in that cleaning copper-slip off the internal threads will be a PITA but you don't want to leave a smear on there to accelerate dissimilar metal corrosion when the final assembly is done?

Nah copper slip is the stuff for SS and plenty of it as well it picks up so easy

[Pikey Dave]

Originally Posted by Poly

would vaseline or silicone grease be better than copper-slip? - in that cleaning copper-slip off the internal threads will be a PITA but you don't want to leave a smear on there to accelerate dissimilar metal corrosion when the final assembly is done?

Vaseline & Silicone won't stop the stainless from picking up, they don't have any EP properties. Plus you don't want silicone anywhere near resin. Dissimilar metal corrosion won't be an issue with the tiny amounts involved, no need to clean off the Copperslip after laminating, in fact, get some more in.

[C-NUMB]

Think teflon tape, on the treads of the bolt(high enough )would do the trick?

[two stroke mick]

What is "Picking up"?

[Pikey Dave]

Originally Posted by two stroke mick

What is "Picking up"?

Here you go
The problem is usually worse in tapped holes in fabrications, as the threaded holes tend to be hand cut. Captive welded nuts are even worse. If you do get a bolt picking up, you are in for some pain, prevention is MUCH better than the cure. Copperslip is the usual answer, but even then I've had fastners pick up, no fun when it's an M20 bolt Normally you would just cut it off & start again, in your case with a glassed in fab, you need to be careful.
When you come to start screwing fixings into the matrix, use lube, go slow & if it suddenly starts to get tight without bottoming out, leave it to cool & slowly unscrew it. Inspect the male thread & it will show signs of damage as if it's been put in cross threaded. Bin the male thread & run a 3rd tap into the hole to clean the female thread & start again.
Try to buy good quality fastners, not all stainless is born equal There is a lot of unbranded imported stuff around & it's sh1te, we've found that "Tigges" and "THE" brands have fewer problems, but even they pick up.

[two stroke mick]

Will I get copper slip at a motor factors or is this an internet type of purcahse?

[SPR]

Originally Posted by two stroke mick

Will I get copper slip at a motor factors or is this an internet type of purcahse?

motor factors , used on brakes - do mean assembly of brakes not on discs!

[hamster]

Halfords and most other motor factors or chandlers will sell copper slop. Usually comes in a tube but they also do tubs of it depending how much you need.

[two stroke mick]

Last night I glassed in the deck matrix with 4 layers of 300 gsm CSM. I used less than 2.5: 1 resin to CSM so delamination should not be a problem and at the same time ensured that the CSm was fully wetted out.
Photo 1 shows the deck ready to be glassed. The treadthed bar is in place to tear through the CSM.
Photo 2 is just after the glassing
Photo 3 was taken this morning after the glass has gone off.
The resin was mixed at 1 % with the resin and the temp in the shed last light was 8-10 degrees C
TSM

Question do you think that 4 layers is sufficent of you would add another 2 layers of 300gsm CSM?
The materix has been screwed in along with Sikaflex bond

[two stroke mick]

I have managed to glass in the deck matrix and get it reasonably flat so the seat will not rock on it. I originally planned to use a jockey seat with an internal flange but then re-considered after reading about must ribs experiance. I have placed a timber (marine ply) base onto the base of the jockey seat. This was sikaflexed. I then glassed over the ply with 6 layers of 300 gsm CSM. This arrangement should re-distribuit the forces generated on the bolts and prevent pull through or the shearing of the flange on the seat. See base of jockey seat below. Plan to flow coat over the CSM to match the colour of the deck.

[two stroke mick]

I got the deck flow coated over the week end along with the removable jockey seat. I just need to get long bolts to allow for it to be fixed to deck. I started this project in the winter of 2012 and am glad to be nearly finished. I am happy with the work though.

TSM