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Sun Jul 27, 2008 5:11 am

A friend is getting ready to go to Silver Lake and he needs to fit his "Dual Cannon" exhaust with spark arresters, what is typically being used? Here is a pic of the exhaust.

Sun Jul 27, 2008 6:21 am

I had a junk tri- mil that I had to bend to fit my f/g buggy. I only used it for S/L.

Sun Jul 27, 2008 11:06 am

Here is better solution to dual cannons...

(not my picture though, just stole it for example)...

It has all the pluses... Power, sound, and sparkarrestor...

Its a Tri-Mil with Camco arrestor/muffler... I run one of these on my autocross buggy and love it....

Dale

Sun Jul 27, 2008 4:22 pm

If it were mine I would have never bought the dual cannons in the first place..but..His exhaust is only a couple months old and I doubt if he want's to replace it already.

Sun Jul 27, 2008 7:54 pm

I'll bet he has to butcher his dual cannons to add spark arrestors.....

I guess you could get some exhaust pipe tubing that would slip inside the existing pipes and pin them in with a single sheet metal screw and attach spark arrestor to added tube.... I would just be conscious of the back pressure issues you may be creating....

Dale

Mon Jul 28, 2008 7:00 am

I have the same duals and cut off the exhaust pipe at the end where it starts to flare and clamped on the spark arrestors. Performance was the same with or without the spark arrestors and it silenced the buggy which was what I was looking for.

Deezal

Mon Jul 28, 2008 7:32 am

Find an exhaust tip or pipe that will fit over the existing cannons. But before you slip it over use fine wire mesh, (preferably stainless steel), to act as a spark arrestor. Then simply clamp it all in place. The tip will hold the wire mesh and the clamp hold the whole thing. Cheap and removable. Or use a motorcycle spark arrestor welded or clamped on the end. Dont forget motorcycles have to have spark arrestors to be used in some off road areas. You'd be surprised what will adapt to a buggy exhaust easily..

Ken Stewart

Heres a link
http://www.google.com/products?hl=en&q=spark+a...p;ct=title

Mon Jul 28, 2008 9:48 am

I'm going to ask a question about arrestors that I've wondered about for a while (I might regret this - category of dumb questions). Why do dune buggies have to have an arrestor on them when they go into state and/or national parks? I'm guessing a "normal" car or truck don't need one. Why buggies? Do motorcycles? I understand if a vehicle backfires there is potential for starting a fire (although pretty remote), but isn't the potential the same for an out-of-tune or defective exhaust in a "normal" vechile? Or, is it simply a noise issue?

Thanks. Bud

Mon Jul 28, 2008 10:26 am

1madmanx wrote: I'm going to ask a question about arrestors that I've wondered about for a while (I might regret this - category of dumb questions). Why do dune buggies have to have an arrestor on them when they go into state and/or national parks? I'm guessing a "normal" car or truck don't need one. Why buggies? Do motorcycles? I understand if a vehicle backfires there is potential for starting a fire (although pretty remote), but isn't the potential the same for an out-of-tune or defective exhaust in a "normal" vechile? Or, is it simply a noise issue?

Thanks. Bud

Regular vehicles (cars & trucks) typically have a long exhaust and baffled mufflers which act as a spark arrester whereas a buggy, ATV or motorcycle have very short and usually not baffled exhausts.

Mon Jul 28, 2008 11:28 am

lostinbaja wrote: 1madmanx wrote: I'm going to ask a question about arrestors that I've wondered about for a while (I might regret this - category of dumb questions). Why do dune buggies have to have an arrestor on them when they go into state and/or national parks? I'm guessing a "normal" car or truck don't need one. Why buggies? Do motorcycles? I understand if a vehicle backfires there is potential for starting a fire (although pretty remote), but isn't the potential the same for an out-of-tune or defective exhaust in a "normal" vechile? Or, is it simply a noise issue?

Thanks. Bud

Regular vehicles (cars & trucks) typically have a long exhaust and baffled mufflers which act as a spark arrester whereas a buggy, ATV or motorcycle have very short and usually not baffled exhausts.

Jerry, is it safe to assume that any stock motorcycle would be required to have an arrestor also? I can't remember the last time I've been to a state or national park, but is there a quickie inspection done by the rangers?

Thanks.

Mon Jul 28, 2008 3:15 pm

Here's a pic of mine if I can figure out how to post a picture.
[img]http://www.shutterfly.com/lightbox/view.sfly?fid=352b51345bbb0da06276141d224b0f78[/img]

Deezal

Mon Jul 28, 2008 3:16 pm

I think all motorcycles have spark arresters from the factory....I think.

Mon Jul 28, 2008 3:21 pm

My friend just ordered a set of these..I guess the Harley guys use them when needed. They will keep the 3/8"dia dowll from going in the exhaust. Hopefully it will pass the test. They are called:
POWER SPIRAL EXHAUST BAFFLES

Mon Jul 28, 2008 7:24 pm

Trying again to post this picture

deezal

Tue Jul 29, 2008 3:43 am

deezal wrote: Trying again to post this picture

deezal

Now that looks like it would do the trick!

Tue Aug 05, 2008 11:49 am

Supertrap mufflers will qualify as an arrestor and you can take plates out of them or run straight open when you leave. On a car, a catalytic converter would qualify as one, too.

Thu Aug 07, 2008 5:27 pm

I used to go to silver lake sand dunes pretty often. If you use a muffler that reverses flow inside like a car muffler or turbo muffler you will be ok. Flow master mufflers are not legal in the sand dunes. If you have anything other than a reverse flow muffler it will have to say right on it US Forestry Service approved And it will have a USFSA# for a spark arrestor. All 4 wheelers come stock with a spark arrestor but most people put aftermarket exhaust on them so they need to buy a specific S/A muffler. Dirt bikes are made for a track or closed course competition and do not have a S/A on them from the factory. But here is some fuel for thought A turbocharger will qualify as a spark arrestor. I had a FMF turbine core muffler on my honda 250R and the rod they use would go through the muffler and then they had to look on the side of the muffler for the USFSA#

Thu Aug 07, 2008 6:02 pm

I,m in the southwest, a little drier and a lot hotter, required or not you should get spark arrestors. you really don't want to be responsible for a fire. It can get alot more expensive then a new exhaust.