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dr350-digest       Thursday, September 16 1999       Volume 01 : Number 160




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Date: Thu, 16 Sep 1999 13:21:50 -0700
From: Wayne Marsula' <[e-mail]>
Subject: Re: (dr350) Update on my engine hesitation.

Bryan Nolastname wrote:
>
> >How's it going Bryan?
>  If
> you get the T-handle you will need to cut off about 1/3" of the little
> magnesium housing that shrouds access to the existing air screw....its very
> quick & easy to do.  You must do this to allow for clearance of the extended
> T-handle over the starter.
>
> Regarding ill effects of the disc-type exhausts (heat melting rear fender),
> this is not a proplem w/ the FMFmegamax2....cause it has a little shield
> that diverts exhaust gas from hitting the fender at its closest point.  Now
> I DO have a slightly discolored part on the fender (which washes off w/ some
> scrubbing), but no heat stress whatsoever.  I think the SuperTrapps that I
> have seen on other bikes have NOT had such a diverter shield, and probably
> would result in some melting.
>
> Bryan in Dallas
> 95 DR350SE
>

Brian and all,
    I have a Supertrapp on my BMW R100GSPD that has a diverter,
but it still gets some flow around it. It has carboned up my
fender stay, but not too bad. That bike needed the 'Trap,
but I won't put one on my DR350SE due to the noise. A lot of
my use for the DR will be slower riding than with the BMW,
and that would make the noise more noticeable.
    Can someone tell me where the Scott T-handle is available?
Sounds like a good thing to have.
Thanks,
    Wayne Marsula'
    Escondido, CA

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------------------------------

Date: Thu, 16 Sep 1999 17:53:12 -0400 (EDT)
From: [e-mail] (John)
Subject: (dr350) exhuast

Okay guys that's enough.Lab tests?spelling bees?Whats next thermal
exhaust retraction factors?(dont have any clue what that means).I just
figured the HOT exhuast gases are carried away from the motor via the
pipe regardless of anything.Reducing heat radiation from the pipe may
help it run a little cooler and then again may not.I also do not
remember Tony claiming his victorys due to this wrapping.If it did make
the motor run hotter I do not think it would be used by guys racing cars
down a drag strip.Heat =hp loss not many fans of this at a track.The
motors are liquid cooled in a car you say.All the more reason you would
want to keep the air that cools the dr around its head down as well.This
whole thing was just an idea i'm sure most are sitting at home reading
and laughing at all this anyway.Later on guys.


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------------------------------

Date: Thu, 16 Sep 1999 17:59:38 -0400
From: <[e-mail]>
Subject: Re: Re: (dr350)

Wayne Marsula' <[e-mail]> wrote:
> Bryan Nolastname wrote:>
> >How's it going Bryan?
>  If
> you get the T-handle you will need to cut off about 1/3" of the little
> magnesium housing that shrouds access to the existing air screw....its very
> quick & easy to do.  You must do this to allow for clearance of the extended
> T-handle over the starter.
> Bryan in Dallas
> 95 DR350SE
>

Brian and all,
    I have a Supertrapp on my BMW R100GSPD that has a diverter,
but it still gets some flow around it. It has carboned up my
fender stay, but not too bad. That bike needed the 'Trap,
but I won't put one on my DR350SE due to the noise. A lot of
my use for the DR will be slower riding than with the BMW,
and that would make the noise more noticeable.
    Can someone tell me where the Scott T-handle is available?
Sounds like a good thing to have.
Thanks,
    Wayne Marsula'
    Escondido, CA

Wayne,
       Thumper Racing carries the T-Handle fuel/air adjusters and prices them at $16.00 per.  Their order line phone is:  1-800-259-5186

Norm
Suzuki DR Suspensions
http://www.geocities.com/motorcity/2299

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------------------------------

Date: Thu, 16 Sep 1999 16:08:32 -0600
From: "Kurt Simpson" <[e-mail]>
Subject: (dr350) Thumper...

I just placed an order with the Thumper in anticipation of installing Jesse's Vortex
airbox.

There standard recommendation for my setup with a stock exhaust is up 1 on the main
jet and up 1 on the pilot. On my SEV that means going from a 127.5 to 130 on the main
and 37.5 to 40 on the pilot. I told them that the list's experience has been that the
40 pilot is too rich. I don't have the impression that I changed their mind FWIW.

I ended up ordering the 130, 132.5, 135, and 137.5. I figured I'll be leaner than
Brian's 140 because he's running an exhaust and lives in TX and I live at 5,000 in
Salt Lake City with a stocker.

There will be a complete review in the next issue of Dual Sport News in the
November/December issue. Along with a review of the Big Gun exhaust (on a KLR).  BTW,
the DR gets regular press in Dual Sport News in Eden Carl's technical corner. If you
have an interest here is subscription info.

Shameless plug follows:

Dual Sport News is available for an annual subscription rate of $15 (US)
or $20 outside of the US. To renew or start a new subscription send your check
made out to "DSN" to:

Kurt Simpson
Editor
Dual Sport News
476 E South Temple
PMB 467
Salt Lake City,UT  84111-1303

Please include the following: Name, Address, City, State, Zip, Phone, Email.

Thanks very much,

Kurt Simpson
Editor
Dual Sport News


BTW, back issues are available for $3 per issue. There are 5 issues of
Dual Sport News and 14 issues of Kawasaki 650 Dual Sport News. The DR350SEY was the
feature bike review in the March/April 1999 issue, while the July/August issue had a
report on the DR350S a light adventure tourer.


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------------------------------

Date: Thu, 16 Sep 1999 19:14:46 EDT
From: [e-mail]
Subject: Re: (dr350) exhuast

In a message dated 9/16/99 4:54:14 PM Central Daylight Time,
[e-mail] writes:

<< Okay guys that's enough.Lab tests?spelling bees?Whats next thermal
 exhaust retraction factors?(dont have any clue what that means).I just
 figured the HOT exhuast gases are carried away from the motor via the
 pipe regardless of anything.

Correct as far as the gasses go but the conductive heat of the pipe is
definitely felt by the head.  Think of the pipe as an integral part of the
engines cooling system.  It removes gases and also acts as a heat sink.  In a
way it is like a spark plug.  The heat range of a plug is determined by its
ability to disperse the heat it encounters in the combustion chamber.  A plug
is engineered by the factory to a specific heat range.


Reducing heat radiation from the pipe may
help it run a little cooler and then again may not.

That's why I questioned the evidence to support wrapping in the first place.

I also do not
 remember Tony claiming his victorys due to this wrapping.

Tony's exact words............"i have used the set-up for about 3 years on
my DR350se i have been in the top five places in all the enduros i have raced
the pasted two years on a trail bike"

If it did make
 the motor run hotter I do not think it would be used by guys racing cars
 down a drag strip.Heat =hp loss not many fans of this at a track.

Actually, horsepower increases with heat until thermal dynamically induced
friction losses set in and begin to rob horsepower and eventually lead to
piston seizure or a myriad of other engine problems.

The
 motors are liquid cooled in a car you say.All the more reason you would
 want to keep the air that cools the dr around its head down as well.

This brings me back to my original point...does it keep the exhaust port area
cooler and has that been proven?

This
 whole thing was just an idea i'm sure most are sitting at home reading
 and laughing at all this anyway.Later on guys.

If you will remember, my original response to your thought that maybe the
wrapping was a silly idea was a simple "yep" with a smiley face.

In my honest opinion, I don't think the wrapping will make a measurable
difference one way or the other on an unfaired engine such as the DR. However
I think pipe wrapping falls into the same category as the Vespa and the fat
girl.  (chill out you politically correct types...I'm packing some extra
pounds myself...no maliciousness intended! : )

Have a good day,
Doug

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------------------------------

Date: Thu, 16 Sep 1999 16:43:55 PDT
From: "Bryan Nolastname" <[e-mail]>
Subject: Re: (dr350) Cutting the can

OOOooohhhh NNNOOOOooo!!!  Dave's gone to the dark side!!!!

I've ridden w/ Dave a few times around the Dallas area, & he's hell on
wheels!  I'm sure he'll do good in competition.

For all you guys considering buying $200+ exhausts....consider doing what
Dave did described below.  I cut up the stock can on a XR650L I had, and it
worked great!

Bryan in Dallas
95 DR350SE


>From: David Millhollon <[e-mail]>
>Reply-To: David Millhollon <[e-mail]>
>To: "Dr350 (E-mail)" <[e-mail]>
>Subject: (dr350) Cutting the can
>Date: Thu, 16 Sep 1999 10:48:22 -0500
>
>OK, good news and bad news.
>I took the stock exhaust and cut the end off and removed the baffle.I
>welded the end back on, didn't want my kids stuffing hot wheels down inside
>it. It diffinitely made a difference.I then put in a K&N air filter, a 135
>main jet, and cut the top out of the airbox. Damn, what a difference.And
>not too loud. Bryan(nolastname)'s DR with the fmf is louder, but not much.
>I only cut the pipe because I was not sure which can I wanted to
>buy.(Notice this is past tense.) I have now aquired a Honda CR250 and think
>that this is the machine that I will be riding for a while. I really like
>the dr and the magic button, but I am not sure I want to try and make it
>into the bike I want and feel I need. I am a big guy (6'4" 205lbs.)
>  planning to start racing cross country this next season in Texas and feel
>I need a lighter and more flexable bike. This CR will hopefully not be the
>bike I race, but is a stepping stone to what I think I will need. As for
>the DR. I am letting a buddy of mine borrow it to ride at the lakes and
>piddle around on. In exchange, I get to ride one of his 5 Harley's when
>ever I get the itch for a road ride. I will stay on the list just for the
>fact of knowing that there is an enormous amount of people here who are
>very knowledgeable, friendly, and helpful. You never know. I just might buy
>the new DR400 when it comes out, and this list is the best place to talk
>about it.
>Dave in Ft Worth.
>
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------------------------------

Date: Thu, 16 Sep 1999 16:49:25 PDT
From: "Bryan Nolastname" <[e-mail]>
Subject: Re: (dr350) Update on my engine hesitation.

T-handle is made by Scott, but available cheaper from Thumper Racing @
800-259-5186, part# TL-FASA, cost $16+$7 S&H for all orders under $50.
Everyone tell them they need a website!

Bryan in Dallas
95 DR 350SE


>From: Wayne Marsula' <[e-mail]>
>To: Bryan Nolastname <[e-mail]>
>CC: [e-mail], [e-mail]
>Subject: Re: (dr350) Update on my engine hesitation.
>Date: Thu, 16 Sep 1999 13:21:50 -0700
>
>Bryan Nolastname wrote:
> >
> > >How's it going Bryan?
> >  If
> > you get the T-handle you will need to cut off about 1/3" of the little
> > magnesium housing that shrouds access to the existing air screw....its
>very
> > quick & easy to do.  You must do this to allow for clearance of the
>extended
> > T-handle over the starter.
> >
> > Regarding ill effects of the disc-type exhausts (heat melting rear
>fender),
> > this is not a proplem w/ the FMFmegamax2....cause it has a little shield
> > that diverts exhaust gas from hitting the fender at its closest point.
>Now
> > I DO have a slightly discolored part on the fender (which washes off w/
>some
> > scrubbing), but no heat stress whatsoever.  I think the SuperTrapps that
>I
> > have seen on other bikes have NOT had such a diverter shield, and
>probably
> > would result in some melting.
> >
> > Bryan in Dallas
> > 95 DR350SE
> >
>
>Brian and all,
>    I have a Supertrapp on my BMW R100GSPD that has a diverter,
>but it still gets some flow around it. It has carboned up my
>fender stay, but not too bad. That bike needed the 'Trap,
>but I won't put one on my DR350SE due to the noise. A lot of
>my use for the DR will be slower riding than with the BMW,
>and that would make the noise more noticeable.
>    Can someone tell me where the Scott T-handle is available?
>Sounds like a good thing to have.
>Thanks,
>    Wayne Marsula'
>    Escondido, CA

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------------------------------

Date: Thu, 16 Sep 1999 20:26:40 -0400 (EDT)
From: [e-mail] (John)
Subject: Re: (dr350) exhuast

piont taken


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------------------------------

Date: Thu, 16 Sep 1999 22:29:26 -0400 (EDT)
From: kevin albrecht <[e-mail]>
Subject: Re: (dr350) exhuast

>Date: Thu, 16 Sep 1999 18:13:51
>To: [e-mail] (John)
>From: kevin albrecht <[e-mail]>
>Subject: Re: (dr350) exhuast
>
>I think cannondale's 400cc engineers may have a say a interesting word or two.
>The engine is designed backwards. Intake in the front, exhaust in the rear.
>
>Kevin 98 ES
>
>At 05:53 PM 9/16/99 -0400, you wrote:
>>Okay guys that's enough.Lab tests?spelling bees?Whats next thermal
>>exhaust retraction factors?(dont have any clue what that means).I just
>>figured the HOT exhuast gases are carried away from the motor via the
>>pipe regardless of anything.Reducing heat radiation from the pipe may
>>help it run a little cooler and then again may not.I also do not
>>remember Tony claiming his victorys due to this wrapping.If it did make
>>the motor run hotter I do not think it would be used by guys racing cars
>>down a drag strip.Heat =hp loss not many fans of this at a track.The
>>motors are liquid cooled in a car you say.All the more reason you would
>>want to keep the air that cools the dr around its head down as well.This
>>whole thing was just an idea i'm sure most are sitting at home reading
>>and laughing at all this anyway.Later on guys.
>>
>>
>>#Visit dr350 archives at http://www.listquest.com/lq/search.html?ln=dr350
>>#Subscribe to Dual Sport News...write to [e-mail] for info.
>>Unsubscribe by sending message to [e-mail]. Leave
subject blank
>>body message unsubscribe dr350 (or dr350-digest).
>>
>>
>


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------------------------------

End of dr350-digest V1 #160
***************************