HST Wine, Not any more

[Tim S]

So, since single stage urethane foam needs moisture from the air to cure, and the foam that was injected into the roll bar cured first at the holes and sealed them, will the foam in the center ever dry?

Lol, I shoulda read all the posts!

 

[Haywire]

I sent GS customer service a message and asked if we added enough water to the pipe to wet the interior surfaces, if it would suffice to cure the foam.

Ian

 

[jimmer2880]

I know, from a different adventure that foam filling un-capped 16" long pieces of 1.5" PVC didn't cure after 2 weeks. I was picking that stuff off of my boat seats for years

 

[OrangeRidge]

So now we need a whole new thread on " How to blow/suck the
foam out of a ROPS ......." **** !

 

[Haywire]

Been doing a little research. Apparently there is a 2 part automotive structural foam out there that folk are injecting into the frames of their little import race cars to stiffen the frame. This would be the ideal product for this kind of thing. Haven't found a source for a small amount just yet though.

Ian

 

[Haywire]

Here we go. You mix the 2 parts and pour it in. Full expansion in 5 minutes. Enough mix for 2 cubic feet of expanded foam is $21. Think 2 cubic feet would be enough for a rops?

Urethane Foam , Expanding Marine Polyurethane Foam

 

[OrangeRidge]

How could you ever get it into the ROPS ..........
Maybe water into the ROPS , followed by the spray
can stuff could be a first line .

 

[Artisan]

__ I went looking and found some info... HERE

__In part is says; " It sounds basic, but the incorrect identification of replacement foams is one of the most common and serious problems we see in the field, says Dr. Stuart Bingham, technical manager for 3M Corp.

The dispensable foam systems used in todays vehicles are classified into two groups. The first are noise vibration harshness (NVH) foams. NVH foams are used, for the most part, to help dampen noise and vibration when the vehicle is being driven. This class makes up the majority of the foams in use.

The second type of foam - structural foam - helps reinforce the vehicle by stiffening and reinforcing pillars and some frame components. Compared to their NVH counterparts, structural foams are relatively new. Their use is less widespread, being confined, at this time, to a few specific applications on a few specific car lines.



__It even goes on to ID another type of foam "Acoustic". I tend to believe in and trust 3M products. Perhaps a call to your local 3M rep will provide more food for thought.

__( I think the rops would be a great spare fuel tank ! ) HA!

 

[Haywire]

How could you ever get it into the ROPS

Well, they're drilling a 3/16 hole in the base plate as it is for the aerosol foam so depending on how thick it is, drill a bigger hole, put a small funnel like a transmission funnel in the hole, mix the two parts and pour it in before it starts to foam. I think I read you have 30 seconds before the reaction starts. If it pours like Karo syrup though, that might not be enough time.

Ian

Edit: Found these 2 faqs... Sounds like it's fairly thick pre-cure, so unless you figured out a way to inject it in there under pressure, it may not work well. Anyone have a 2 quart syringe with a 1/4" needle? LOL

6. How much time do I have to pour the foam?

After you have combined the two components you have approximately 45 seconds before the foaming process begins. We recommend that you stir the liquids vigorously for 25 seconds, after which time you have another 20 seconds to pour the foam into place. The foam will fully expand in 5 minutes and be fairly hard in about 15 minutes.

18. Can I fill a pipe with the foam?

The answer would depend on the diameter and distance of the pipe. A 1 foot diamater, 3 foot long pipe would be no problem. A 1 inch diameter, 20 foot long pipe would be impossible. Since the foam only remains liquid for about 45 seconds, it can only flow approximately 5 feet before it starts to gel and expand. When pouring the foam into a pipe, also remember that the liquid will coat the inside walls of the pipe and expand thereby clogging the opening on a small diameter pipe. We recommend testing the foam first for this type of application since results can vary on each application.

 

[Haywire]

This stuff is automotive NVH foam that is used in the collision repair shops but it's pricey ($60) and you need a gun to shoot it as it's just a refill cartridge. From the looks of the nozzle on it, you'd need a 1/2" hole in the base of the rops too.

Maybe a body shop that's set up for it could do it?

Another thing that just came to mind.. they foam fill tractor tires. Maybe the same stuff could be used in the rops and if they inject it through the valve stem, it might be a matter of just taking your rops down to the tractor dealer to do.

Flexible Foam, NVH - Sealers - Automotive Exterior - 2KUU6 : Grainger Industrial Supply