| spark arresters [message #327444] |
Sat, 23 December 2017 22:20  |
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Dutch Marc
Messages: 101
Registered: March 2017
Location: Full TIme Nomad
Karma: 1
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Senior Member |
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Hi Guys, just looked at some "Off-Highway Vehicle Area" info and they mentioned that a approved "spark arrestor" and "mufflers" are required.
Since I am spending most of my time camping / Boondocking of the main path, does any1 have any suggestion or info regarding these requirement.?
I understand that they are to prevent wildfires etc. Maybe our GMC doesn't need one because of the exhaust system., But I don't know this ..
Thanks & Grtx Dutch Marc
1973 26' Canyon Land (Mello Yello) (TZE063v101302)
Full Time GMC Nomad ('98 NL 2 USA)
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| Re: [GMCnet] spark arresters [message #327446 is a reply to message #327444] |
Sat, 23 December 2017 23:09  |
Richard Denney
Messages: 920
Registered: April 2010
Karma: 9
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Senior Member |
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The requirement for spark arresters is usually on the generator, and both
the US National Parks andthe Forst Service have that requirement, too. The
arrestor is just a metal screen in the exhaust system (often between
muffler and tailpipe) that prevents spark from escaping the exhaust pipe,
even in case of backfire. Or, it’s like a muffler but with traps for
sparks. When I installed my Generac, the arrestor came with it.
https://www.fs.fed.us/eng/pubs/html/03511304/03511304.htm
https://en.m.wikipedia.org/wiki/Spark_arrestor
Rick “just clamp one that fits on the tailpipe” Denney
On Sat, Dec 23, 2017 at 10:21 PM Dutch Marc wrote:
> Hi Guys, just looked at some "Off-Highway Vehicle Area" info and they
> mentioned that a approved "spark arrestor" and "mufflers" are required.
>
> Since I am spending most of my time camping / Boondocking of the main
> path, does any1 have any suggestion or info regarding these requirement.?
>
> I understand that they are to prevent wildfires etc. Maybe our GMC doesn't
> need one because of the exhaust system., But I don't know this ..
>
> Thanks & Grtx Dutch Marc
>
>
> --
> 1973 26' Canyon Land (Mello Yello) (TZE063v101302)
> Los Angeles, CA ('98 NL 2 USA)
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Rick Denney
73 x-Glacier 230 "Jaws"
Off-list email to rick at rickdenney dot com
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| Re: [GMCnet] spark arresters [message #327449 is a reply to message #327446] |
Sun, 24 December 2017 09:59 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Senior Member |
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The Honda ev series have a nice small spark arrestor. Looks like a kid's model of a rocket ship from the 50's. Does not seem to hurt performance.
Tom
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: spark arresters [message #327451 is a reply to message #327444] |
Sun, 24 December 2017 11:36 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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73melloyello wrote on Sat, 23 December 2017 23:20Hi Guys, just looked at some "Off-Highway Vehicle Area" info and they mentioned that a approved "spark arrestor" and "mufflers" are required.
Since I am spending most of my time camping / Boondocking of the main path, does any1 have any suggestion or info regarding these requirement.?
I understand that they are to prevent wildfires etc. Maybe our GMC doesn't need one because of the exhaust system., But I don't know this ..
Thanks & Grtx Dutch Marc
Marc,
As one that was part of the time for this requirement, I can tell you why.
Most performance 2-stroke bikes of the period had straight pipe expansion chamber exhausts and those frequently blew out big chunks if burning carbon. The mufflers often required to get below the maximum noise level were also straight through glass packs that did not stop the exiting burning chips.
The standard was changed some years back and now requires a screen with a 0.024" mess. This is way smaller than typical window screen, so assembling one from hardware store parts is going to be problematic. But, they are still a common add-on or repair part for many off road vehicles be they bike or ATV types. So, if you are worried, go to some place that deals in those and ask the parts guy what he can do for you. A smart one will have some answers.
Good Luck
Matt
It is difficult for an engine like to Onan to though out such chips, and the standard Onan muffler would trap them anyway. But, as a 1973 build, I do not believe that the existing muffler will be marked as compliant. It probably is, but if you get stopped by that ranger that was just harassed by some idiot, he may not be interested in the facts. Ergo,
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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