Ultra vs. ZRT6

Ultra vs. ZRT6

Post by Scott Will » Thu, 30 Nov 1995 04:00:00


        I read more than one post in our "other group" of the Zirt 6 being
able to beat up on Ultra's. I thought this was odd, since it's
considered a 700cc class sled vs. the Zirt's 600cc. I went riding
yesterday with a couple of guys with '96 Ultras, one was stock the
other had many mods including SLP pipes, (yea I know, they've been
recalled) a custom airbox, and many other mods that he wouldn't talk
about. I raced the modified one, which was faster than the stock one,
and the rider weighed the same as me. I holeshotted him by about 2
lengths and he said that distance never changed after that. I have to
take his word for it because I wasn't going to look back at those
insane speeds. It was on a hard packed snow-plowed state hiway and
yes, my pretty green hifax's were melting away.
        I found the race very interesting, since my Zirt is bone stock with
the factory FAT jetting and those factory installed improper clutch
weights etc.
        Guess the rumor I read is true.

---

2 each '96 ZRT600 Mountain Cats
Northern Utah

 
 
 

Ultra vs. ZRT6

Post by Tom Aver » Fri, 01 Dec 1995 04:00:00


writes:

Quote:

> I raced the modified one, which was faster than the stock one,
>and the rider weighed the same as me. I holeshotted him by about 2
>lengths and he said that distance never changed after that. I have to
>take his word for it because I wasn't going to look back at those
>insane speeds.
>    I found the race very interesting, since my Zirt is bone stock
with
>the factory FAT jetting and those factory installed improper clutch
>weights etc.
>    Guess the rumor I read is true.

>---

>2 each '96 ZRT600 Mountain Cats
>Northern Utah

Scott,

   Dan C. and I have had a small discussion on what effect altitude has.
Could it be that some engines will lose less HP going from sea-level to
7500 feet?? One might lose 10% and another 20%. Could there be some
engine designs that are better than others for this??

   Also, did this guy have the reworked SLP pipes??  The first batch are
reported to be giving on 8HP, not the 35HP that they were supposed to...

TA

 
 
 

Ultra vs. ZRT6

Post by Mike Chesle » Fri, 01 Dec 1995 04:00:00

Quote:

> I holeshotted him by about 2 lengths and he said that distance never changed after that. I have to
> take his word for it because I wasn't going to look back at those
> insane speeds. It was on a hard packed snow-plowed state hiway and
> yes, my pretty green hifax's were melting away.
>    I found the race very interesting, since my Zirt is bone stock with
> the factory FAT jetting and those factory installed improper clutch
> weights etc.
>    Guess the rumor I read is true.

I like to hear that, I was wondering how they would compare??

That good new to hear when your a CAT man.

Mike Chesley
1995 ZR700

 
 
 

Ultra vs. ZRT6

Post by Robert Re » Sun, 03 Dec 1995 04:00:00

That sounds a little strange.  My 96 xcr600 (white) with SLP pipes is
beating zrt 600's and xcr 600 SPs.  I even got to ride the zrt 600
because the guy I raced wanted me to tell him what was wrong with his
sled.  First thing, it wasn't pulling the tach were it should have been.  So
we wound the secondary tighter.  That cured that problem.  Second, the
engagement was about 4200.  Too low as far as I'm concerned.  Also it did
not handle that good.  He had 120 picks in the track and the backend
still fished all over the place.  It steered great but it tracked pretty bad.
Just though I'd give my opinion or should I say results.

Robert Rehm

 
 
 

Ultra vs. ZRT6

Post by Lephturn (Sean Conr » Tue, 12 Dec 1995 04:00:00

Quote:

>That sounds a little strange.  My 96 xcr600 (white) with SLP pipes is
>beating zrt 600's and xcr 600 SPs.  I even got to ride the zrt 600
>because the guy I raced wanted me to tell him what was wrong with his
>sled.  First thing, it wasn't pulling the tach were it should have been.  So
>we wound the secondary tighter.  That cured that problem.  Second, the
>engagement was about 4200.  Too low as far as I'm concerned.  Also it did
>not handle that good.  He had 120 picks in the track and the backend
>still fished all over the place.  It steered great but it tracked pretty bad.
>Just though I'd give my opinion or should I say results.
>Robert Rehm

In my experience, something with that much power should be closer to
196 studs.  Your buddy's sled needs some more teeth!  

Conditions, clutching, carbs, etc.  There are so many differences that
we will likely see lots of different results in this thread.  The only
way to get even a decent idea is with box-stock sleds with no traction
products, and equal-weight drivers.  I gues that if there are enough
responses in this thread, we will get some Idea though.

L8er

*********************************************
Lephturn (Sean Conrad)

Nova Scotia, Canada
Santa drives a T-cat.  I just know it!
*********************************************

 
 
 

Ultra vs. ZRT6

Post by Scott Will » Wed, 13 Dec 1995 04:00:00


Quote:
>*********************************************
>Lephturn (Sean Conrad)

>Nova Scotia, Canada
>Santa drives a T-cat.  I just know it!
>*********************************************

        I'm with you, Sean, I just know Santa rides a T-Cat !!
I mean, he is the biggest of the BIG DOGS, and if your going to hang
with the big dogs, and especially tow all of those goodies, you'd
better have a 900cc sleigh.


2 each '96 ZRT600 Mountain Cats
Northern Utah
(OK, OK, one Zirt is the Wife's)

 
 
 

Ultra vs. ZRT6

Post by Lephturn (Sean Conr » Sat, 16 Dec 1995 04:00:00

Quote:


>>*********************************************
>>Lephturn (Sean Conrad)

>>Nova Scotia, Canada
>>Santa drives a T-cat.  I just know it!
>>*********************************************
>    I'm with you, Sean, I just know Santa rides a T-Cat !!
>I mean, he is the biggest of the BIG DOGS, and if your going to hang
>with the big dogs, and especially tow all of those goodies, you'd
>better have a 900cc sleigh.

Check out my "Santa drives a Thundercat!" story I posted.   You didn't
think I just made it up did you?  ;->

Quote:

>2 each '96 ZRT600 Mountain Cats
>Northern Utah
>(OK, OK, one Zirt is the Wife's)

*********************************************
Lephturn (Sean Conrad)

Nova Scotia, Canada
"SHIFT!  SHIFT!" - Me screaming at my significant
 other from the passenger seat of my car.
*********************************************
 
 
 

Ultra vs. ZRT6

Post by Chadek » Sat, 16 Dec 1995 04:00:00


Quote:
(Sean Conrad)) writes:
>*********************************************
>Lephturn (Sean Conrad)

>Nova Scotia, Canada
>"SHIFT!  SHIFT!" - Me screaming at my significant
> other from the passenger seat of my car.

Sean I qiute yelling I just told her to watch the tach and shift down when
it bucks and up when the tach is over 4000
 
 
 

Ultra vs. ZRT6

Post by Scott Will » Sun, 17 Dec 1995 04:00:00


Quote:


>>>*********************************************
>>>Lephturn (Sean Conrad)

>>>Nova Scotia, Canada
>>>Santa drives a T-cat.  I just know it!
>>>*********************************************
>>        I'm with you, Sean, I just know Santa rides a T-Cat !!
>>I mean, he is the biggest of the BIG DOGS, and if your going to hang
>>with the big dogs, and especially tow all of those goodies, you'd
>>better have a 900cc sleigh.
>Check out my "Santa drives a Thundercat!" story I posted.   You didn't
>think I just made it up did you?  ;->
>*********************************************
>Lephturn (Sean Conrad)

>Nova Scotia, Canada
>"SHIFT!  SHIFT!" - Me screaming at my significant
> other from the passenger seat of my car.
>*********************************************

        No, I didn't see your story about Santa on a T-Cat. Where is it?  I'd
love to read it.

Scott.


2 '96 ZRT600 Mountain Cats
Northern Utah  (OK, OK, One Zirt is the wife's)

 
 
 

Ultra vs. ZRT6

Post by Keith Malatest » Tue, 19 Dec 1995 04:00:00

Quote:

>Sean I qiute yelling I just told her to watch the tach and shift down when
>it bucks and up when the tach is over 4000

I did the same, until I bought a 911 Targa, I found Melissa doing 85 in