Raced my WB Pred against another WB Pred
Feb 27, 2003 | 01:49 PM
#21
Trailblazer
Joined: Jan 2003
Posts: 65
Likes: 0
Raced my WB Pred against another WB Pred
Hi All,
Kudos to all who responded to the Intruder from the Camp'o Blue...I wonder how long he'll be down, how much of his "More Mods" money he'll have to spend when his 2nd and 3rd gears let go, probably while trying to keep up with much smaller displacement quad....
Or it could be the A-Arms, or some other part that Yamaha has KNOWN ABOUT for the entire model run and still not fixed...
But who can blame Yamaha...why should they fix identified problems with their design, when delusional owners think the design flaws are really caused by: 1) The massive power of THEIR PERSONAL machine, or 2) Their agressive riding/racing style.
I shopped for a Raptor, and I'm so glad that I found these forums to read about it's issues before hand. I have seen literally hundreds of posts calling for the CPSC to intercede and help these Raptor owners try and get satisfaction about their transmissions. They're even asking for all those who have been injured by being throw over the bars when the trans locks up to write or mail so something can be done....
I would think that this most recent visitor should focus his efforts back on his own forums, and leave us to address our minor jetting issues...Let's see at the end of the first model year for the Predator how many things have blown up compared to the first year of the Raptor....NO, the second year of the Raptor, NO, the thrid year of the Raptor....
JJ
Kudos to all who responded to the Intruder from the Camp'o Blue...I wonder how long he'll be down, how much of his "More Mods" money he'll have to spend when his 2nd and 3rd gears let go, probably while trying to keep up with much smaller displacement quad....
Or it could be the A-Arms, or some other part that Yamaha has KNOWN ABOUT for the entire model run and still not fixed...
But who can blame Yamaha...why should they fix identified problems with their design, when delusional owners think the design flaws are really caused by: 1) The massive power of THEIR PERSONAL machine, or 2) Their agressive riding/racing style.
I shopped for a Raptor, and I'm so glad that I found these forums to read about it's issues before hand. I have seen literally hundreds of posts calling for the CPSC to intercede and help these Raptor owners try and get satisfaction about their transmissions. They're even asking for all those who have been injured by being throw over the bars when the trans locks up to write or mail so something can be done....
I would think that this most recent visitor should focus his efforts back on his own forums, and leave us to address our minor jetting issues...Let's see at the end of the first model year for the Predator how many things have blown up compared to the first year of the Raptor....NO, the second year of the Raptor, NO, the thrid year of the Raptor....
JJ
Mar 11, 2003 | 01:07 AM
#23
Trailblazer
Joined: Jan 2003
Posts: 65
Likes: 0
Raced my WB Pred against another WB Pred
Hi everyone,
Well, more on the ultimate popping machiine. I installed my tach this week, and made one more jetting effort. I upped to a 180 Dynojet main jet, the largest that I had from their jet kit. I went out to our local riding spot and tested...still pops at the top end like a huge backfire. The difference is now I know the approximate rpm range where the popping starts. My tach shows that the rev limiter kicks in, ON MY MOTOR, at about 8500 rpm.
I say about, because that is not a consistent number. Sometimes it is at 8800, sometimes at 8200, sometimes at 9000. It may well be that my CDI is less consistent than others, or it may be that I still need to change the pilot jet. One of the first pros that I spoke with about his popping problem was a guy from Mikuni, who told me I would need to go to a larger than 45 pilot jet with the slip on and more air flow. I hesitated, because Dynojet told me I shouldn't need to do that. The Mikuni guy told me something to the effect of when you roll off the throttle at high rpm, the carb relys on the pilot to fill in the "gap" just created by the lack of fuel coming in at the high rpm range. Made good sense to me, but since I didn't have the new pilot jet till today, I couldn't try it this weekend.
The motor pulls VERY STRONG right up to where the limiter kicks in. Problem is it starts to pop before I can shift, as it revs so quickly, and it is not consistent as to the rpm where it kicks in. I know from the Dynojet dyno tests the motor is through making power after 8000 rpm, so I need to reprogram my thinking and learn to shift right at 8000.
I am going to try the new pilot this week and see what happens with that. Hell, I have had this thing apart so many times now I can do it while I'm sleeping. The pilot jet change to a 50 seems promising, as that is also one of the changes that Gary at the Superbike Shop did with his airbox kit.
I did ride all over the desert this Sunday, and the Predator is really running strong. Easy wheelies if you want to, and terrific mid range and top end...very smooth and steady power, great for the dunes and dune berm trails I like to ride in. It literally leaps out of one banked berm into another. It is an ablolute blast to ride, it just pops too easily, in my opinion. This motor is good till 10,000 without stress, and I feel it should have some over-rev when you need it. I refuse to give up!!!
I will report further later this weekend, after still another round of jetting adjustments. I am SOOO going to get a new CDI when they are available! I don't give a crap if they cost $400.00, I've wasted that much money in wasted time messing with it...
I also posted a few photos of the tach I installed on my gallery. Most everyone who saw it thought it looked pretty good. It is very easy to read, and I really like having one there. Too many years of always relying on a tach on my street bikes, I guess. It was simple to wire in, and easy wrenching skills to mount to the bar clamp.
Good luck to you all...if anyone's still out there on this thread....
JJ
Well, more on the ultimate popping machiine. I installed my tach this week, and made one more jetting effort. I upped to a 180 Dynojet main jet, the largest that I had from their jet kit. I went out to our local riding spot and tested...still pops at the top end like a huge backfire. The difference is now I know the approximate rpm range where the popping starts. My tach shows that the rev limiter kicks in, ON MY MOTOR, at about 8500 rpm.
I say about, because that is not a consistent number. Sometimes it is at 8800, sometimes at 8200, sometimes at 9000. It may well be that my CDI is less consistent than others, or it may be that I still need to change the pilot jet. One of the first pros that I spoke with about his popping problem was a guy from Mikuni, who told me I would need to go to a larger than 45 pilot jet with the slip on and more air flow. I hesitated, because Dynojet told me I shouldn't need to do that. The Mikuni guy told me something to the effect of when you roll off the throttle at high rpm, the carb relys on the pilot to fill in the "gap" just created by the lack of fuel coming in at the high rpm range. Made good sense to me, but since I didn't have the new pilot jet till today, I couldn't try it this weekend.
The motor pulls VERY STRONG right up to where the limiter kicks in. Problem is it starts to pop before I can shift, as it revs so quickly, and it is not consistent as to the rpm where it kicks in. I know from the Dynojet dyno tests the motor is through making power after 8000 rpm, so I need to reprogram my thinking and learn to shift right at 8000.
I am going to try the new pilot this week and see what happens with that. Hell, I have had this thing apart so many times now I can do it while I'm sleeping. The pilot jet change to a 50 seems promising, as that is also one of the changes that Gary at the Superbike Shop did with his airbox kit.
I did ride all over the desert this Sunday, and the Predator is really running strong. Easy wheelies if you want to, and terrific mid range and top end...very smooth and steady power, great for the dunes and dune berm trails I like to ride in. It literally leaps out of one banked berm into another. It is an ablolute blast to ride, it just pops too easily, in my opinion. This motor is good till 10,000 without stress, and I feel it should have some over-rev when you need it. I refuse to give up!!!
I will report further later this weekend, after still another round of jetting adjustments. I am SOOO going to get a new CDI when they are available! I don't give a crap if they cost $400.00, I've wasted that much money in wasted time messing with it...
I also posted a few photos of the tach I installed on my gallery. Most everyone who saw it thought it looked pretty good. It is very easy to read, and I really like having one there. Too many years of always relying on a tach on my street bikes, I guess. It was simple to wire in, and easy wrenching skills to mount to the bar clamp.
Good luck to you all...if anyone's still out there on this thread....
JJ
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