[TR] Car Harmonics

Bob yellowtr at adelphia.net
Tue Oct 20 15:21:45 MDT 2009


On Tuesday 20 October 2009 11:24:40 am pethier at comcast.net wrote:
> > Car companies spend millions tuning out resonances in modern autos.
> > But
> > I think most of the racket comes from the exhaust system.  The Falcon
> > system
> > on my TR6 is particularly bad.  I don't think it is so much the noise
> > coming out of the pipe as it is the walls of the muffler vibrating.
> > The mild
> > steel mufflers are made with heavier gauge steel and don't resonate as
> > much but
> > the Falcon designers decided that since Stainless doesn't rust they
> > can get
> > away with thinner material.  They were right and the muffler has
> > lasted 13
> > years but the down side is I will probably replace it for other
> > reasons.
> > But that is a round tuit yet to be got.
> > Dave
>
> I have heard from several sources that the Bell stainless systems are
> superior in quality and fit to the Falcon.  The TransAmeriCan Stag used a
> Bell system, and I was pleased with its sound when I rode in and drove it. 
> Don't recall any annoying resonances, but my memory was never any good.
>
> You may have noticed at Triumphest that TR44SUE is louder than your
> bagpipes. Sue is getting tired of setting off car alarms with the
> glass-pack system that Chris Murphy commissioned at the Midas shop in San
> Antonio.  A Bell system may be in its future.  Anybody know the best way to
> buy one in the USA?
>
> Meanwhile, how goes the battle to either move your Triumph home or secure
> it in Colorado for the winter?
>
> Phil Ethier West Side Saint Paul Minnesota USA
> 1962 Triumph TR4 CT2846L   1979 Caterham 7
> 1993 Suburban  1994 Miata C-package  2007 Saturn Ion 3 2.4
> http://www.triumphtransamerica.org.uk
> http://forum.mnautox.com/forums   http://www.flickr.com/photos/pethier
Phil, Dave,

I am going to get a Bell system for my 72 TR6 project. I have the Bell system 
on both my 3 and 4 and love the sound and the fit was the best I have ever 
seen.

I have spoken to Kai @ WIshbone Classics and he quoted me a price of about 650 
for a Bell system. This is a dual exhaust system SS from the headpipe to the 
dual mufflers. I know it sounds a bit high but take it from me, the Bell is top 
quality.

Bob


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