FMF Stealth silencer update!!

[rpduc]

Curious - did you weld the plate on with the plastics in place?

I took out the lower mounting bolt and rear hanger for the fender and wedged a chunk of wood to hold it away from the weld.

Alu is tricky to weld because it transmits heat so fast and often one doesn't know for sure what alloy has been used. It helps to preheat but I didn't want to add any more heat that necessary. I should have pulled off the subframe, cleaned more carefully, blah-blah, but...

[GMP]

How much $$ are these ? For ECEA racing a TC II is fine, quiet compared to a most of the 4-strokes. I'd like something a bit quieter for trail riding here as I'm a total outlaw, and need to set up a small, secret practice course for my outlaw kids.

[eff]

GoFasters has the Q listed for $180.

[rpduc]

Yup I got mine from Go Fasters.

I will get the thing tested this weekend. I had a TCII last year at this event and they just waved me through the sound check because the knew it would pass. If they do that again I'm going to ask them to take a reading just out of curiosity.

[forgiven]

Is it a clearly noticeable change in noise?

[F_G]

Originally Posted by forgiven

Is it a clearly noticeable change in noise?

Here is what it did for my '08 EC300

- Turbine Core 2 with about 100 miles on it - 91.8 db

- Q Stealth with a ride around the block - 85.7 db

[Skidad]

Originally Posted by F_G

Here is what it did for my '08 EC300

- Turbine Core 2 with about 100 miles on it - 91.8 db

- Q Stealth with a ride around the block - 85.7 db

AWESOME...and IMO WAY overdue. Sound is still the #1 problem we face and that's a huge drop in db. Just really nice.

Sadly, this thing should have been around 10-15 years ago, it's not any new fangled technology going on here just a big can with lots of packing.

If anyone happened to see/read the Dirt Rider torture test and look at the sound test results the GG with the Stealth CRUSHED all the others except a Kawi KLX 110 or something stupid. Some of the other bikes were crazy loud yet almost no mention of sound or bonus points for the GG. That test is such BS it's not funny as you would need to take out a small mortgage for some of the bikes. Just not real world realisitc.

[iancp5]

Originally Posted by Skidad

AWESOME...and IMO WAY overdue. Sound is still the #1 problem we face and that's a huge drop in db. Just really nice.

Sadly, this thing should have been around 10-15 years ago, it's not any new fangled technology going on here just a big can with lots of packing.

100% agree.
Never understood why people want to be loud, just makes it more tiring.

[rpduc]

AWESOME...and IMO WAY overdue. Sound is still the #1 problem we face and that's a huge drop in db. Just really nice.

Sadly, this thing should have been around 10-15 years ago, it's not any new fangled technology going on here just a big can with lots of packing.

Totally agree.

Never understood why people want to be loud, just makes it more tiring.

Me neither, but it seems to be an element of motorcycle "culture" that persists. It is unfortunately true that one can extract a bit more power out of freer exhaust flow, but not enough to trade for no place left to whack open the throttle. I think some people "think" they're going faster if they making more noise.

I imagine very few dirt bikes ever make it to a dyno but I'll bet most riders would get more of a performance boost out of a diet than a loud exhaust.

[iancp5]

Originally Posted by rpduc

I imagine very few dirt bikes ever make it to a dyno but I'll bet most riders would get more of a performance boost out of a diet than a loud exhaust.

The riding I do having more power means slower especially at my ability. I swapped from a 300 to 200 and have seen a small improvement in results and a huge improvement in enjoyment. I am no longer crawling off the bike at the end of a race. I have competed on 300's and 450's and found I hardly ever got past half throttle so what was the point?