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Mounting fire extinquisher on 220-H
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Author:  law950 [ Sat Aug 23, 2008 11:47 am ]
Post subject:  Mounting fire extinquisher on 220-H

Can anyone out there with a 220-H tell me where the best place to mount a fire extinquisher is, and the best way to mount one securely? Pic's would be helpful if you've got them.

Author:  H180 [ Sat Aug 23, 2008 6:25 pm ]
Post subject:  Re: Mounting fire extinquisher on 220-H

Law,

I have mine mounted horizontally under the dash to keep it out of the way of my feet. Not sure if horizontal is bad for the extinguisher but it is great for space.

Will attach some pics tomorrow.

Steve

2007 H220

Author:  230 Mike [ Sat Aug 23, 2008 10:36 pm ]
Post subject:  Re: Mounting fire extinquisher on 220-H

Nearly horizontal is better than vertical. Vertical encourages the chemical to pack and solidify in the bottom.

Author:  Jim_R [ Sun Aug 24, 2008 11:14 am ]
Post subject:  Re: Mounting fire extinquisher on 220-H

I believe my 200 is not so different. Here's where I installed the first fire extinguisher.

Image

I liked the position so much I installed another in the same way at the helm.

Author:  law950 [ Sun Aug 24, 2008 12:56 pm ]
Post subject:  Re: Mounting fire extinquisher on 220-H

230 Mike wrote:
Nearly horizontal is better than vertical. Vertical encourages the chemical to pack and solidify in the bottom.


Thanks Mike...didn't know that about the extinquishers. Are there any particular fasteners or screws I should use?? I've never drilled into my boat and I'm a bit leary of doing it.

Author:  230 Mike [ Sun Aug 24, 2008 2:05 pm ]
Post subject:  Re: Mounting fire extinquisher on 220-H

I sent a reply to your PM. I'll include the same text here in case others would like to correct me on anything.

"Drilling into your boat is always a daunting experience, especially the first time you do it! But as long as you're careful, it's really not a big deal.

Of course you should use stainless hardware. I'm amazed at the number of boat related accessories that don't come with stainless screws, etc. - it seems like anything I do to the boat requires a trip to the hardware store for replacement screws.

As far as drilling - start by knowing that your liner is fiberglass with a gel coat surface which is about 1/16" thick. The fiberglass is pretty strong, the gel coat is very brittle.

Make SURE the area behind the hole locations is safe to drill into. You don't want to hit any wires, etc. Sometimes you need to remove a speaker, etc., to get a look behind there. Cover the areas where the holes will be with blue masking tape, then mark the hole locations on the tape. The purpose of the tape is to support the surrounding gel coat as you drill.

Use a standard drill bit (this is usually an 82-degree tip, high speed steel bit - but it's just a "plain old bit"). Of course you want to pay special attention to using the right size drill bit. You want the screws to have maximum holding power, but if you make the hole too small you could almost guarantee cracking around the holes. Begin by running the bit backwards at a very slow speed with light pressure to get through most of the gel coat. Then switch to forward to finish the hole, but continue at a slower speed than usual and don't use more than moderate pressure. As soon as you start drilling you'll get a feel for it.

Once the holes are drilled, remove the tape. At this point it's best if you chamfer the gel coat around the holes. This "relieves" the gel coat and greatly reduces the chance of cracks forming around them. For this step I like to use a Weldon countersink running at very low speed and very light pressure. This creates a funnel-shaped countersink around the hole. You want to countersink the gel coat only, not the fiberglass. Probably any countersink will work, but I bought a set of Weldons about 10 years ago and have found them to be one of the best things I've bought. One source:

http://www.jlindustrial.com/WEC-99650A/ ... oduct.html

Also - I didn't mean to imply that an extinguisher should be mounted horizontally necessarily. Just at some angle other than vertical. That pic Jim posted shows a really nice mounting job.

It's really just a matter of being very careful and paying close attention to every step.

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