I have a few hundred miles on my new 1.352" Camoplast Cobra mounted on my 2002 Viper and am very impressed. I am running stock gearing, stock drivers, stud protectors still installed, stock clutching, and not studs. The track feels amazing compared to the stock track I took off. In powder (18-20 inches) I can lift the front and play in the snow well. The sled does trench more now as I am digging harder. For top speed, yesterday I saw 112 on the dream o meter, but only held it open for about 10-15 seconds after already running around 50-60mph on moderate hard pack.
One frustration I have is that my buddy has a 2002 ZR600CCE with a non studded 1 1/4" Predator and he will run ski to ski with me to 90mph before I pull away. His sled is also bone stock. Probably the biggest difference is that I am tipping the scales at 290lbs, while he is 170lbs dripping wet. Figured I probably am alright considering the weight differential. I'd sure like to wax him though. Guess I'll have to call weight watchers.
One frustration I have is that my buddy has a 2002 ZR600CCE with a non studded 1 1/4" Predator and he will run ski to ski with me to 90mph before I pull away. His sled is also bone stock. Probably the biggest difference is that I am tipping the scales at 290lbs, while he is 170lbs dripping wet. Figured I probably am alright considering the weight differential. I'd sure like to wax him though. Guess I'll have to call weight watchers.
VenomMod
New member
I put the Cobra on my Venom this year and love it. Next best thing compared to my pipes i've put on the sled. Makes off trail riding a bit easier.
polarisconvert
New member
I don't own a Viper so I don't know, but something dosen't seem right there. I have never seen a ZR600 run hard. Maybe he has a BB and not telling you. What did you see on the DM before the Cobra?
viperdougc
Member
120 pounds could have an effect as well!
RIVERRUNNER
Active member
Make sure your clutching is running at the right rpm!!!! I have heard good things about that track!!!
I am certain his ZR is stock. He's a good friend and known him for some time. I am running 8500 rpm at WOT and engage about 3500 if I remember correctly. I am writing it off to the weight differential between the two of us. Next time we ride, we are going to line them up, and then switch sleds to see what difference my girth makes. I bought this sled with 52 miles on it last year so I am still trying to figure it out.
With the stock track I remember seeing 118, but don't recall the rpm's at the time. Was too busy holding on and watching for obstacles. I also noticed that the DM on the Viper is pretty consistent with his speedometer. On each trip, we are within a couple tenths on total mileage. At 91 on the DM I start walking away from him pretty well, but it is neck and neck until then. We bought our wive's newer Rev 600 HO sleds, so we are going to compare them as well. For now, I don't think I'll be taking any 800 sleds unless there is a different pilot on board.
I'm not much of a lake racer so I am pretty happy with the performance. I may think about clutching for next season, but quite honestly my arms are tired enough at the end of the day from the pull of this sled the way it is. The addition of this track was an awesome upgrade for me and would recommend it to anyone.
With the stock track I remember seeing 118, but don't recall the rpm's at the time. Was too busy holding on and watching for obstacles. I also noticed that the DM on the Viper is pretty consistent with his speedometer. On each trip, we are within a couple tenths on total mileage. At 91 on the DM I start walking away from him pretty well, but it is neck and neck until then. We bought our wive's newer Rev 600 HO sleds, so we are going to compare them as well. For now, I don't think I'll be taking any 800 sleds unless there is a different pilot on board.
I'm not much of a lake racer so I am pretty happy with the performance. I may think about clutching for next season, but quite honestly my arms are tired enough at the end of the day from the pull of this sled the way it is. The addition of this track was an awesome upgrade for me and would recommend it to anyone.
Also should have mentioned that my PowerValves were cleaned the day before we went riding. Hoppes Gun Powder solvent, razor, and 180 grit amory cloth seemed to do the trick well. I was also running a Sno Stuff rumble pack which I am going to remove for the next round with my buddy.
journeyman
Active member
I too have installed the Cobra on my Viper this season. I did this mainly because I had it apart and replaced the speedo side bearing which was growling. My CAMO Predator had over 5000 miles on it and was looking a bit tattered on the lugs....some were torn a bit, but I could of ran it another year I guess. I have only put on about 20 miles this year being mother nature keeps teasing us with snow, then jerking it the other way with warm ups and rain. I am planning on riding this weekend in northern Wisconsin, so I will get a better feel for the new track.
jholden, as for clutching, your machine doesn't sound like it is over revving....but the optimum for the best performance is to tach at 8500....then creep to 86-8700 on long pulls. Mine performs best with that type of shift pattern. If you ever want to try Heavy Hitters give me a PM and I will give you a start point. I really like mine and have run them for almost the entire life of this sled. I can't believe either that a ZR600 runs that good....your rider weight does make a difference though. The only 600 that has ever been close to me was a 2003 REV and the rider was about 120lbs. (I'm about 210 undressed) The Rev kept even with me to about 75mph....then I walked him bad. Mine is very close or better than any 800 twin I have ever run. Doo's being the strongest and one friend at work with a ZR800efi that nipped me on a 40 degree day by one length on the lake.........then he blew a belt. LOL!! I ran even with a '06 REV800 gade, have walked a ZR800 carb, dusted numerous XC800 Poo's and believe it or not stayed ahead of a ZR900 and a length behind a MACH 1000 twin 2 years ago on the lake......so I'd say my clutching must be working pretty good. The last two sleds could get me in a drag from dead stop mainly the holeshot......but on top end, just cruising at 70-80mph on the lake and hit it ......it was a different story. It will be interesting to see if this track will be better or worse in those situations.
jholden, as for clutching, your machine doesn't sound like it is over revving....but the optimum for the best performance is to tach at 8500....then creep to 86-8700 on long pulls. Mine performs best with that type of shift pattern. If you ever want to try Heavy Hitters give me a PM and I will give you a start point. I really like mine and have run them for almost the entire life of this sled. I can't believe either that a ZR600 runs that good....your rider weight does make a difference though. The only 600 that has ever been close to me was a 2003 REV and the rider was about 120lbs. (I'm about 210 undressed) The Rev kept even with me to about 75mph....then I walked him bad. Mine is very close or better than any 800 twin I have ever run. Doo's being the strongest and one friend at work with a ZR800efi that nipped me on a 40 degree day by one length on the lake.........then he blew a belt. LOL!! I ran even with a '06 REV800 gade, have walked a ZR800 carb, dusted numerous XC800 Poo's and believe it or not stayed ahead of a ZR900 and a length behind a MACH 1000 twin 2 years ago on the lake......so I'd say my clutching must be working pretty good. The last two sleds could get me in a drag from dead stop mainly the holeshot......but on top end, just cruising at 70-80mph on the lake and hit it ......it was a different story. It will be interesting to see if this track will be better or worse in those situations.
Squeeze Play
New member
JHolden,
Put the stock exhaust back on and you will take him quicker.
Put the stock exhaust back on and you will take him quicker.
journeyman
Active member
Squeeze Play said:
I second that.
journeyman said:
Yeah for some reason I couldn't resist the sound of it and I broke down and bought one. That rumble pack is going to come off after only 120 miles on it. It sure sounds nice, but I also noticed I used more gas than normal with it on as well.
journeyman
Active member
I never tried that one, but many have seen me post the other three I have tried (SLP, MBRP and Bender) and I lost performance with them all. I just don't think a silencer will work on this sled. Yamaha really did a good job designing the single exhaust. I have never seen any one sled lose so much performance from a silencer. I tried a few on my old '97 600SX and one brand lost a little and actually the Yamaha GYT version (same as Bender at the time) gained a bit of performance. We had a 1998 700 XTC with a Bender and it stayed the same for power, but sounded awesome......like triple pipes. The three silencers I mentioned sounded OK....but I thought the red head 700 motor (SX/XTC) sounded way better. The problem with the Viper is the baffles inside of the main pipe which deadens the sound quite a bit.