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SuperTrapp for XR600R

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Ron Urman

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Sep 27, 1996, 3:00:00 AM9/27/96
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TG (tgi...@erols.com) wrote:
: I'm thinking of installing a SuperTrapp exhaust on my XR600R. Is the
: improvement worth the price I will pay in catching more attention from
: landowners who may not like the extra noise? Please let me know just
: how much louder it will be than stock. Thanks in advance.

I have a SuperTrapp EAR on my '93 XR600R and am quite happy with it. The
main reason for choosing the EAR was it's quiteness compared to the
Racings Series and Megaphone models. In my opinion the other models
take away too much of the low end and are WAY to loud for trail
riding. The EAR is a bit louder than stock, but gives much better
top end and revs.

An extra benefit of the EAR is that is can be easily converted into a
Racing Series (replace the core or punch out part of the baffle).

Ron Urman
ur...@filenet.com


TG

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Sep 27, 1996, 3:00:00 AM9/27/96
to

I'm thinking of installing a SuperTrapp exhaust on my XR600R. Is the
improvement worth the price I will pay in catching more attention from
landowners who may not like the extra noise? Please let me know just
how much louder it will be than stock. Thanks in advance.

Tom Gimer
1990 XR600R (w/baja designs conversion)
1993 CBR900RR
1994 ZX-6E (for sale--e-mail for details)

Michael Patrick

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Sep 28, 1996, 3:00:00 AM9/28/96
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The 93 XR I've been riding cracked the STrapp silencer right in half! It
doesn't have excessive vibration or anything either.

FMF is supposed to have a new 4-Stroke exhaust system being released on
October 1st. It is to have an oval silencer which only makes sense to me..
anyhow they are supposed to be quite good from what I hear... will be
waiting to see what they look like before any new purchases...


Mikeee P


Michael Patrick

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Sep 28, 1996, 3:00:00 AM9/28/96
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BTW that last note of mine about the cracked STrapp... didn't mean to
imply that it was junk, it could have taken a hit or something, or maybe
it just was one that slipped through quality control... couldn't tell you
as the bike had it on it when I started riding it...

By the way, this is a street legal XR650L... they should be illegal, the
thing is like a little wheelie king, and it is a major rear brake slider
on the street! LOL

I'm gonna get in trouble on this thing.... it's a giggle a minute! MP


Jackal

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Sep 29, 1996, 3:00:00 AM9/29/96
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My understanding is NO. You gain horsepower on TOP, but lose it down low,
where you really need it! The 600's awesome off idle torque is not to be
messed with.
The normal thing is to modify the stocker by replacing the restrictive
baffle with a freer breathing baffle. Baja Design carries the Thumper
insert, bolts right in, 70 bucks. Louder and more power. My mechanic (a XR
man) replaced mine with one from some 3 wheeler model to the same effect
for about $40. Keep on thumpin!


Tom Niemela

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Sep 30, 1996, 3:00:00 AM9/30/96
to TG

OK, read my lips: Supertrapps are TOO LOUD for anything other than closed
course competition. While they are a decent pipe (and you will have to
rejet your main jet) their noise level is unacceptable, even with the
E.A.R. insert (which doesn't last long)! The four-stroke motor produces
a sound that travels farther too. Plus, the sound is directed out at 360
degrees. I've got a Cobra ISDE muffler for my XR and it's too loud
also, though it's quieter than the Supertrapp. I personally use the
stock muffler with the Thumper Racing insert. This unit allows the bike
to breath better and points the exhaust down - away from the
non-motorcycling publics's ears.

I'm not trying to flame you, it's just that we ALL need to start
rejecting the idea that loud pipes are faster. Noise annoys.

There, I'm done.
-Tom Niemela

Jeff Dunham

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Sep 30, 1996, 3:00:00 AM9/30/96
to

TG wrote:
>
> I'm thinking of installing a SuperTrapp exhaust on my XR600R. Is the
> improvement worth the price I will pay in catching more attention from
> landowners who may not like the extra noise? Please let me know just
> how much louder it will be than stock. Thanks in advance.
>
> Tom Gimer
> 1990 XR600R (w/baja designs conversion)
> 1993 CBR900RR
> 1994 ZX-6E (for sale--e-mail for details)


The stock pipe is designed very well. If you want the best
power increase with a minimum amount of noise increase. I
would go with one of the aftermarket baffle replacements.
I have used thumper racing's stealth insert, White Brothers
makes something similar to it (I think they call it a "hot tip".)

jeff


--
Jeff Dunham 1995 XR300R
jdu...@wv.mentorg.com

Impulse

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Oct 1, 1996, 3:00:00 AM10/1/96
to

Tom Niemela wrote:
>
> TG wrote:
> >
> > I'm thinking of installing a SuperTrapp exhaust on my XR600R. Is the
> > improvement worth the price I will pay in catching more attention from
> > landowners who may not like the extra noise? Please let me know just
> > how much louder it will be than stock. Thanks in advance.
>

I agree with Tom in regards to the noise issue. I orginally purchased a
WB Megalloy pipe because I had this ridiculous thought to MX my XR.
Now, this muffler gave quite a bit better hit on top at the expense
(very minor) of some low end and it is a few pounds lighter and better
looking than the stock pipe BUT a few things have become evident:

1.Unless the motor is really uncorked and the pipe is run as a straight
megaphone (without the disks) the benefit of mo power is not worth the
auditory nerve damage and hit on the wallet. Of course this motor setup
would be the hot ticket during race time but when you are monkeying
around on Forest service roads during elk season and some hunters hear
you from a couple miles away, that appeal kinda goes PooF.

2.The noise emitted is wonderful for scaring the crap out of wildlife
for miles on end in any direction. My buddy took my bike off for a
little jaunt while I hung around the truck and that big ole XR just
thundered and echoed all around the mountains we were in. It was sort
of like that scene from Time Rider where that old Mexican dude hears
that bike coming down a wash and thinks its El Diablo.

The stock pipe, uncorked is good enough and with that little insert in
its not so offensive to the ear. Though, a full on raging thumper on an
MX track is right on.

richard...

Alan Roach

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Oct 1, 1996, 3:00:00 AM10/1/96
to TG

TG wrote:
>
> I'm thinking of installing a SuperTrapp exhaust on my XR600R. Is the
> improvement worth the price I will pay in catching more attention from
> landowners who may not like the extra noise? Please let me know just
> how much louder it will be than stock. Thanks in advance.
>
> Tom Gimer
> 1990 XR600R (w/baja designs conversion)
> 1993 CBR900RR
> 1994 ZX-6E (for sale--e-mail for details)

The Thumper racing baffle is a better alternative than the Supertrapp.
Power output with the baffle is nearly equivalent on top, with better low
end response. Sound output is 92 db compared to 99 db with the
Supertrapp. Frame flex in the XR will eventually break the lower
mounting boss out of the Supertrapp tailpipe. Not only that, it's much
cheaper at $69.00 from Baja Designs (800 422-5292).

Happy trails,

Alan

Bruce Arnold

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Oct 1, 1996, 3:00:00 AM10/1/96
to

Alan Roach <baj...@bajadesigns.com> wrote:
>TG wrote:
>>
>> I'm thinking of installing a SuperTrapp exhaust on my XR600R. Is the
>> improvement worth the price I will pay in catching more attention from
>> landowners who may not like the extra noise? Please let me know just
>> how much louder it will be than stock. Thanks in advance.

>


>The Thumper racing baffle is a better alternative than the Supertrapp.
>Power output with the baffle is nearly equivalent on top, with better low
> end response. Sound output is 92 db compared to 99 db with the
>Supertrapp. Frame flex in the XR will eventually break the lower
>mounting boss out of the Supertrapp tailpipe. Not only that, it's much
>cheaper at $69.00 from Baja Designs (800 422-5292).
>

White Brothers also sells a similar insert. I don't have any experience
with it, but it cost about the same, and looks much better than the Thumper
Racing model (what ever that is worth). It has a very nice looking aluminum
section that extends the silencer about an inch beyond the end of the pipe.
I eventually plan to buy one for my 650L.

-------------------------------------------------------------
Bruce Arnold Honda XR-650L 1993
Gurley, AL (Huntsville area) KTM 250-T/XC 1992
br...@hmi.com Honda XR-100 1992 (wife's)

TG

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Oct 1, 1996, 3:00:00 AM10/1/96
to

Impulse wrote:
>
> Tom Niemela wrote:
> >
> > >OK...You've all convinced me. I'm going to go with the Thumper Racing Baffle from Baja Designs.
BTW, just to clear things up, my intentions were not to make more noise *just* to make noise,
but to see if it was possible to get a little more out of the bike without annoying everyone in
the area. I appreciate the help you've all given.

Tom

Jeff Dunham

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Oct 4, 1996, 3:00:00 AM10/4/96
to

Alan Roach wrote:
>
> TG wrote:
> >
> > I'm thinking of installing a SuperTrapp exhaust on my XR600R. Is the
> > improvement worth the price I will pay in catching more attention from
> > landowners who may not like the extra noise? Please let me know just
> > how much louder it will be than stock. Thanks in advance.
> >
> > Tom Gimer
> > 1990 XR600R (w/baja designs conversion)
> > 1993 CBR900RR
> > 1994 ZX-6E (for sale--e-mail for details)
>
> The Thumper racing baffle is a better alternative than the Supertrapp.
> Power output with the baffle is nearly equivalent on top, with better low
> end response. Sound output is 92 db compared to 99 db with the
> Supertrapp. Frame flex in the XR will eventually break the lower
> mounting boss out of the Supertrapp tailpipe. Not only that, it's much
> cheaper at $69.00 from Baja Designs (800 422-5292).
>
> Happy trails,
>
> Alan


I tried passing an ISDE sound test with a supertrapp end cap. I
thought
I could pass with 10 discs. I ended up with 3 discs to pass (94db) and
the bike would barely run. The next event I ran the stock pipe with
the thumper insert and easily passed the sound test.

This year I bought a yoshimura pipe because it was the best pipe that
I could find with a rear exit and screen type spark arrestor instead of
the "send the sound everywhere" supertrapp end cap. Les at LTR modified
the pipe for me internally to produce more power and reduce sound
output.
And no, I won't tell you how...

BTW, I saw that sudco makes a pipe very similar to the Yosh (looks
identical) at a much lower cost. They also make a larger header to
go with it... Made me wonder whether Yoshimura actually makes the
pipe at all...

Mark Boyd

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Oct 4, 1996, 3:00:00 AM10/4/96
to

Mark Boyd 1996 XR400
1974 Penton 400

XR600's respond well to free-flowing pipes. Most of the gain will be on
the top end and you WILL notice it! Don't forget to richen the main jet a
size or two. I've run SuperTrapps and Thumper inserts and believe the
Thumper solution is cheaper, quieter, and will produce more horsepower
for the equivalent sound level.

Happ Trails!

Leslie Stanley

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Oct 7, 1996, 3:00:00 AM10/7/96
to

Mark Boyd (boyd...@worldnet.att.net) wrote:
: Mark Boyd 1996 XR400
: 1974 Penton 400


:
I've got a Supertrapp EAR on my XR250L noew, with 10 discs. The
bike runs fine, and I like the weight loss over the stock pipe.
But with 10 discs, it's too LOUD!

Does anyone know how many discs the Supertrapp would take to
equal the sound level of the Thumper insert? That is, would
the Thumper insert give me less sound, with equivalent per-
formance? If it would, I'll buy one.

--Leslie
: Happ Trails!
Happ Trails!

Bob Franklyn

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Oct 7, 1996, 3:00:00 AM10/7/96
to

sta...@hpl.hp.com (Leslie Stanley ) wrote:

:
> I've got a Supertrapp EAR on my XR250L noew, with 10 discs. The
> bike runs fine, and I like the weight loss over the stock pipe.
> But with 10 discs, it's too LOUD!
>
> Does anyone know how many discs the Supertrapp would take to
> equal the sound level of the Thumper insert? That is, would
> the Thumper insert give me less sound, with equivalent per-
> formance? If it would, I'll buy one.
>
> --Leslie
>: Happ Trails!

I don't know about being equivalent to a Thumper insert, But I've got
an EAR on my XR200R with 6 discs, and its QUIETER than stock, but much
more powerful...

Bob


Jeff Dunham

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Oct 10, 1996, 3:00:00 AM10/10/96
to

Leslie Stanley wrote:
>
> Mark Boyd (boyd...@worldnet.att.net) wrote:
> : Mark Boyd 1996 XR400
> : 1974 Penton 400
>
> : XR600's respond well to free-flowing pipes. Most of the gain will be on
> : the top end and you WILL notice it! Don't forget to richen the main jet a
> : size or two. I've run SuperTrapps and Thumper inserts and believe the
> : Thumper solution is cheaper, quieter, and will produce more horsepower
> : for the equivalent sound level.
>
> :
> I've got a Supertrapp EAR on my XR250L noew, with 10 discs. The
> bike runs fine, and I like the weight loss over the stock pipe.
> But with 10 discs, it's too LOUD!
>
> Does anyone know how many discs the Supertrapp would take to
> equal the sound level of the Thumper insert? That is, would
> the Thumper insert give me less sound, with equivalent per-
> formance? If it would, I'll buy one.

It takes three to four discs to get you down to 94db. I know
I failed the sound test several times at the Idaho Qualifier
last year.

I would try the new turbine type spark arrestor that can be
used in place of the supertrapp disc pac if you want to
run the supertrapp (or any other pipe that uses one).

Let me know how it works...

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