Chat & Social > The Bar - General Chat
"Noisy" exhausts
Bulli:
BTM , you are far more likely to get a tug for a dark visor( they make it far safer at this time of the year) and small number plate.
to make the assumption that the bikes had been pulled over, if indeed they had, due to the exhaust volume is a heck of a leap of faith.
squires has always been a biker haunt and quite often has a few hundered bikes and a police presence. I go loads and have never had any issues...
Terranosaurus:
All this talk of back pressure is a bit old hat, what you're actually searching for is a tuned length, as any 2 stroke biker will surely agree. The manifold design and positioning of the first silencer is the critical thing the system after that does have an effect but the really important bit is that first length.
Now back to the chavs - the problem I think comes from the turbo culture, with a turbo tuned lengths are hyper difficult to achieve and don't really have much of an effect, so you can just run the biggest possible pipe to shift the exhaust gases as fast a possible, so chavs see Scoobys and Evos running round with 4"+ systems and think well if its good for 600bhp on that it must be good for my 106/saxo/corsa/baked bean can.
As for competition exhausts if need be a good competition exhaust will be made to be quite at the test RPM, its a static test at most events and to hell with the rest of the time let it do its own thing. A Mk2 escort I used to own ws quite a sa mouse on part throttle at 5000rpm.
Bush Tucker Man:
--- Quote from: "Bulli" ---BTM , you are far more likely to get a tug for a dark visor( they make it far safer at this time of the year) and small number plate.
--- End quote ---
I was merely alluding to the fact that there is a presence there at times & although 'you' may be stopped for visor/plate, I guess that a 'loud' exhaust may be 'looked at'
Yes, I agree with the 'Loud Pipes Save Lives' campaign, but not for 2-strokes & chav-cars
Bulli:
not for 2 stroke scooters but i love an rgv on song but not in town :wink:
Range Rover Blues:
--- Quote from: "sptb" ---All this talk of back pressure is a bit old hat, what you're actually searching for is a tuned length, as any 2 stroke biker will surely agree. The manifold design and positioning of the first silencer is the critical thing the system after that does have an effect but the really important bit is that first length.
Now back to the chavs - the problem I think comes from the turbo culture, with a turbo tuned lengths are hyper difficult to achieve and don't really have much of an effect, so you can just run the biggest possible pipe to shift the exhaust gases as fast a possible, so chavs see Scoobys and Evos running round with 4"+ systems and think well if its good for 600bhp on that it must be good for my 106/saxo/corsa/baked bean can.
--- End quote ---
Which is more or less what the wife was illuding to:
--- Quote from: "The Ant Hill Mob" ---These boys are very silly. Basic physics states that noise is a form of energy. That energy has to come from somewhere, and if your car sounds like a bag of spanners and it's got anything less than a 3-litre engine under it's bonnet, you're going to be losing a couple of horsepower going down the street sounding like you've go no exhaust at all.
--- End quote ---
But my personal pet-hate is the "just backed over a dustbin" look they all seem to crave. I've seen a Coarser in Dronfield with 4 stainless cans under the back hovercraft skirt that were about the size of the pedal bin in our bathroom.
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