"Fuel" can for a pointy - Noise Measurements

For anyone wondering the usual questions about replacing their standard anchor sorry - end can, here is some visual information for you. Please bear with the pics since they were snapped on a camera phone.

Well, to start off with, you will know how big/ round / shiny / ugly etc your original can is/ was, so I won't post pictures of that.

The well packed box of goodies that awaits (standard priced Stainless Steel oval direct from www.fuelexhausts.com)....


Lets start by calibrating a sound meter in order that we can get some meaningful readings between the different states of play. The meter in question is set to "Cal" and is adjusted if necessary to read 94.0dB like so....


Next, record the standard cans peak sound level at idle.....


And then at 5k on the tacho....


Carefully remove the standard can as instructed (using an angle grinder in my case with the right peg, brake lever etc removed for easier access) and measure without any silencer at 5k....


After fitting the new oval stainless silencer, measure again at idle with the baffle in...


And again at 5k...


After removing the single nut and bolt to remove the baffle (simple!) repeat again - idle.....


And finally at 5k.....


Straight pictures of the can in place now. First of all from the side...


From the front....


And finally- from the rear quarter.....


All silencer sound measurements were taken with the meter mounted rigidly exactly 0.5m from the outlet. Haven't riden her yet, since not only was it throwing down when I did the job, but I had to let the silicone sealant used cure off. That in addition to being tied up at work, has left me awaiting the chance for a test run!

Hope this is helpful......

Cheers,
Garry

I am thinking of a Fuel SS oval can myself.

Looking forward to hearing what you think when you take it out for a spin.

Just a quick comment.................

....managed to get out the other week for a brief run - first in ages. Well, well what do you know? The bloody baffles "fallen" out already seconds was all it took. Never mind I picked it up and luckily it fits under the rear seat even with an Oxford Monster disk lock and scotoiler in there.

Seemed to progress a little easier with the baffle out since I found myself looking at the speedo and getting a fright at the reading. Perhaps it was just enthusiasm after a spell without riding, but I did think it felt easier revving.

Oh yes and the sound? It's loud and mean.

Nice one,

Garry

Just wanted to say thanks for this post!!.

Going to Mallory on Friday and needed to know if I'd pass the 105db sound test

Yep - you should be good to go on the noise limit as long as they don't measure it at something silly like 0.3m (12").

Just to add also that without remapping or any other farting around, my can has behaved flawlessly over the last 10 months. Sometimes the baffle finds it's way under the pillion seat and it pops and bangs on overrun, but the bike runs great. When the baffle goes inside for a heat, the bike is nice and "quiet(er)" without noticeable pops etc.

3rd gear is perfect for attracting attention - wind her up (within the limits or on track) and snap the throttle shut quickly. That will rewars you with a few good pops and bangs and a silly grin that'll keep your face muscle in trim!

Garry