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I dont think there are airhorns around any local track days or local races.
FIM applies this to professional racing because it then trickles down to the national and local level where it is very much needed.
Staintune Cannons?
I know they ended up making some ridiculous pipes for some Teams / Customers, but, not in my time there. Mind you, things like full reverse cone pipes for various twins and singles for Road racing / BEARS in particular, they made at times, were quite 'rowdy'.
I remember seeing some Reverse Cone Dirt Bike mufflers they made, with removable end cones, taken from / modelled from pipes I mentioned in the previous paragraph. They could be repacked, or run without internals, to become a full reverse cone muffler. They, were truly objectionable things.
Their quality was superb - making replica pipes for all sorts of Road Bikes. Generally, quiet (well, louder than std, but not objectionable), but also ones with 'sports' or 'race' internals . A BM twin with the fluted Conti muffler type internals, was / is a wonderful thing to hear, by the way.
They could be heavy - though lighter than std, or, more lighter weight, but never were they particularly lightweight 'kings'. Stainless pipes, especially with mechanical noise control internals, don't approach Ti or CF, that's for sure. Though, I think they tried some CF skins .
Yes, their race pipes weren't quiet as a mouse, far from it, but we'd supply quiet inserts - I and others referred to those as 'Cats Arses' for the quietest versions on the inserts. On Verex's site, you'll see that type of insert.
They went under. Be it from increasing Legislative demands, spiralling costs, Lack of demand, mismanagement, A winding down of interest after decades of production - buggered if I know, I left well before their ending. I've a few Staintune exhaust systems, still. Ones I made myself (I made my own pipes for years before I worked there, and continue to do so), ones that were production items off the shelf. I'm about to fit one such system to a TT2 that I now have a reverse head 900 engine for, to replace my 705cc engine with.
The pipes I'd push people today to, would be Verex, in Tasmania, run by Paul Verdeux (I'm absolutely sure I've got that spelling wrong). They have a limited list of Road Bike systems, and do Custom work as well. Paul ( and his Team ) is a superb Maker and Engineer. I haven't seen or talked to him in a long, long time, though.
HATE the air horns! I was at Red Bud and the ones in front of me had one made from a Harbor Freight battery tire inflator with a set of air horns strapped and plumbed in. Awful loud BS all day long.
Replying for a friend. Not if all of them are.
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Noise isn't the issue in motocross. Its developers building houses right next to established tracks that have been there for decades. Then the new people move into their homes and "OMG why do I hear dirtbikes so close to my house? Lets sign a petition to shut them down, neighbors".
Dumbest reason why people think noise is the problem. The problem is you moved into a new neighborhood they built right next to the damn track. Its the housing developers are the problem, not the bikes.
Yeah well that shit ain't going away so we need quieter bikes. Hate to break it to ya, but you (and 99% of other dirt bike owners) aren't fast enough to need a louder exhaust than the stock one anyway.
Too late; I'm already deaf from racing against the things for 20 years.
E-bikes will have zero exhaust dB rating. Just sayin'.
I think we're going to be seeing more aggressive resonator style devices in the system before the silencer to change the exhaust frequencies to a more manageable frequency for the silencers... Then the silencer can be more efficient.
Reduced noise levels are coming, and it likely can't be changed.
Its for Motocross World Championship not the USA so what’s the problem????
Its about letting the bike breathe and perform better. Not just about sound BRO.
Oh, I'm sorry I wasn't specific enough for you to understand, let me restate.
99% of people aren't fast enough to need the bike to perform better than it does with stock exhaust.
Is that better?
Do you honestly think you are a good enough rider that having a 5% performance increase from exhaust is going to make you faster?
Its not about "iF yUo wErE a bEtTeR rIdEr" BS. Its personal preference and free will. Maybe go live where communism is more up your alley. Because apparently you hate having freedom of choice.
Back in 2006 when we built my first 250f race engine and ran that on the dyno with a aftermarket exhaust we tried a couple of different inserts for the silencer.
There were zero to none gains removing the insert and when we tried one of the quieter ones what we lost in HP like 0.5HP we made up with the same amount in NM instead.
And in 2015 i ran another built 250f on the dyno with a Akrapovic exhaust and even that did not gain anything from removing the inserts.
People put way to much belive in Sound = HP.And for years the bikes has become quieter. If you hear a early around 2004 250f with a aftermarket exhaust today your ears will fucking bleed.
So building a quiet modern bike today is not a problem, and if a race team would lose 1-2hp on top, who cares since they all will be in the same boat.
Woah that's a pretty extreme take.
Who knew that if you weren't a complete dumb fuck and have enough common sense to know that louder pipes don't actually make you faster and they also lead to tracks and riding areas closing...that it made you a communist.
Thanks for putting your complete ignorance on display for all of us to see, I got a good laugh outta how big of an idiot you must be.
Clearly you can't read what I actually said. Its called freedom of choice. If people wanna put pipes on their bikes, they can. If you don't want to, then don't. No one is making you buy an exhaust. And a few decibel change isn't going to matter. Stock bikes are plenty loud to get tracks shut down. why do you have such a hostile take on this? jeez..
You called me a communist and I'm the one who's hostile?
Ok pal.
Have you built a modern “flapper”?
Pit Row
You moderate-conservative independent thinker! You disgust me!
I never called you a communist. Go back and read what I said "PAL". I said you don't like freedom of choice. If you drew the conclusion I called you a name without saying it. Then you know where you truly stand. We're just talking about sound db for bikes. All I said was its not going to matter if they have pipes or not. They help with performance of the engine, and a louder sound is just an effect of that. Again. Sound isn't the problem. Its people building houses too close to tracks. Imagine moving to Chicago and being surprised you hear gunshots at night and think gun free zones will fix the problem..
Communist!
(tracks getting pushed out by urban sprawl is the sad truth…especially out here in Cali)
Keep on putting a spin on it pal. Pretty wild leap to say I don't like freedom of choice and should move to somewhere communist don't ya think?
Anyway, you win I guess. As they say, you can't fix stupid, so I'm not sure why I'm even trying.
Yeah we pretty much got that vibe already
they weren't called cannons that was just my summation. i played with one for a 2003 yz250f and it was huuuge looked like a huge cannon taller than the rear fender iirc
Are you referring to the "Snuff ****** (I forget the rest of the name - maybe it was Snuff It / Em Out?) Flapper type set up that was around in the 70s. Like a 4 stroke throttle body 'flapper'? You're Old , like me, so Maybe that's what you are asking about.....
You'd flip an arm / lever, to close off a section of the muffler internals, or a secondary, from my recollection. Some had a smaller OD than the ID of whatever area it was put into, so the exhaust flowed 'around it, or, with a hole in the center of it, with the flow 'through' it.
I've seen variations of that type of thing over the years, and have seen such set ups on few street car builds. I think one of my Brothers Street Sleepers has something like that.
Oh, OK.
I Thought you meant something marketed as "Cannons". Which, I had never heard of.
Giving me the thought that they might have been the full megaphone type, with removable end cap, that could be run with either a perf. core with packing, the Fluted Conti / Ducati type core, or, with Absolutely Nothing at all internally - such a thing, was Unbloodybelievably Loud on something like a full house modded XR630.
I first made my own Staintune pipes with the smaller 70 / 75mm body, with a reverse cone megaphone, thence into a Conti type Fluted Core, with a Superbike Spout. It was quite reasonable in noise, but, locally I'd put a short quiet insert into it. That was held in with a single 6mm bolt, and I'd carry that, when out, on a no longer used radiator mount on my CR framed XR.
Staintune used the larger (and long / Longer) diameter bodies for many Dirt Bikes, especially the Big Bores. And, they were Big. Ultra Light Weight was not the primary goal for them. Quality was. Hell, I had to battle with Sandy and Bert (the original partners) when I first made my Mufflers and headers for My hybrid bikes, to Not have them polished. To get them to agree to supply Bollards mufflers in an unpolished state, was somewhat 'trying' . Bollards, by the way, had Nothing to do with their development, they just supplied the tack on Tag / Plate with Ballards XRs only engraved on it after I got sick and tired of doing the f**king engraving....
If you think They were big, here's one of the mufflers I've made for my CRE500:
Made from 2 Big Gun bodies, with the first perf tube in 32mm, then an empty chamber, then the last perf core in 28.6mm. Around 29" of muffler, sticking Waaay out there, and above the fender. Makes for a Mouse quiet CRE500, it does. I use the Ridiculously Huge thing in my local area, or my rides into Sydney / around Sydney Harbour, but use a 70mm diameter, 26" long, 32mm perf core muffler for other 'public riding', that's still Very quiet. I'm looking at 5 different mufflers (right down to an FMF Shorty) for the old Beast, hanging above my head right now, that I can put on for whatever situation I'll be in.
Though, the 70mmx26" is on 90% of the time, even Club MX events. I like a 'civilized' bike. And, a quiet muffler has enabled me be able to ride right by the local constabulary at the trail head, with them having bailed up a group of idiots with Loud 4ts, and Defecting them. I forget the fine for noisy bikes, but it's Not Bloody Cheap nowadays . With a quiet bike, All Lights and Indicators fitted and working, and 2 Double Take mirrors unfolded, the Cops have no interest in me, and I like it that way.
You guys can race your Stark. It just needs to meet the current rules.
Would the AMA let me race a 97K1500 with a 383?
https://www.instagram.com/reel/C8wgvo6uYVY/?utm_source=ig_web_copy_link
This sounds good to me!
Thank you
They build shit lIke that next to tracks because they know they'll almost always win the battle in the end.
Look at what their doing to Cleetus Mcfarlands track in Florida. Straight up lied about where they were stopping "urban development" then started building next door. His place has been there forever.
Even if E-bikes replace everything, people will still bitch because they can. It'l be the dust next, or the traffic, or the noise from the crowd. Some people are just iinsufferable
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