| Author | Message | ||
     Joojoo |
I took my XB12 out last night to go for a good run with my buddy on his R6....we did some straight line races (which I won up to around the 140 km/h zone). I twisted that throttle as far as she would go, and shifted at around 6500PRM in each gear. I noticed that a few times when I was releasing the clutch during a shift, the gear would grab hard (real hard), actually snap my head back while doing highway speeds! Its not like I had throttle going during the shift, or during the clutch release. I was surprised at the snap the bike shot with just releasing the clutch and hitting the throttle (at 60 MPH!). Is this normal for the XB12? Is something in my drivetrian set too tight? I dont want to bust a belt, or snap something.... Any info would be coo,, Jack edited by joojoo on May 13, 2004 | ||
| M1combat |
LOL! It's all about TORQUE BABY!!! If you rev it out in first (to about 6K anyway)and then let completely off the throttle, pull the clutch in a little and shift to second, dump the clutch, the front tire will LEAP off the ground. It was a bit scary the first time it happened to me but if you learn to control it there's nothing cooler than taking a japanese bike off the line and then just as you get a bike length in front you pop the front about 8-10" in the air and take off holding it up through second. With a little throttle you can get it to just bounce a tad on the shift to third and get it back up there  . I try to let it down as slow as possible just before I switch to third. Watch for bumps. Don't get loopy. Loose arms (grip with the legs). | ||
| Joojoo |
AWESOME! Hey M1, is that much stress on the tranny/drivetrain not going to snap/screw anything? It can hanlde that kind of stress? Jack | ||
| M1combat |
Uhhh, well it can handle it until it breaks at the least. It's under warranty. I've only done it a few times and no trouble yet (The first time was an accident but it felt so cool I had to try it again). Also, my belt has had a rock run through it and there's a small piece (about an 1/8" diameter) that is "sticking out" on the back side of the belt. It's been that way for about 1000 miles now and no trouble. I check it frequently to make sure it's not getting worse. I think the main reason it's "ok" is because it's right in the center of the belt. | ||
| Daveinm |
I pop the front wheel up all the time. I was the same way when it first happened. A bit freaked out...just wasn't expecting it. Now I do it all the time Just to compare, how many RPM's you up to when you pop it? How hard are you popping the clutch? I haven't really looked down to check, but I would guess that I have it up to about 4000 when I pop the clutch. I also don't pop the clutch to hard. | ||
| Daveinm |
Oh yeah....I'm on a 9S with the race kit. It's definitely different than the 12R. | ||
| M1combat |
Usually just under 6K. I always let off the gas before I pull the clutch in and I only pull the clutch in a little (maybe a bit more than 3/4" travel at the end of the lever) and I let it out quickly. It's a controlled release of the clutch. I don't just let it slip out from under my fingers or anything. As far as popping the front wheel up all the time - I generally don't. I actually prefer to keep both wheels firmly planted unless I intend to get BOTH wheels off the ground (you'd be surprised at how well the XB jumps). I've never had it any more than maybe 8" or so in the air but it seems to jump quite nicely. My only trouble is I tend to push the pegs in just the right direction that they want to collapse near the top of the arc. That can't be safe. It took a few tries to break my self of the old habit. I don't recommend jumping a bike with this much torque though. If you don't keep the RPM's very controlled it will try to rip itself out from under you upon landing. Anyway - Closed course professional rider and all that. Don't try this at home. | ||
| Joojoo |
Dave, When the bike jumped forward for me it did it shifting into 3rd, and 4th. I didnt give any gas, I just let the clutch out (pretty quick), and as it grabbed the gear, it just bucked forward (real hard). Revs were probably around the 4000RPM zone when it happened... CRAZY POWER! Jack | ||
| Daveinm |
Yeah, sounds like what I do. The first time I did it was the only time I didn't intend to do it. I do it all the time cause it's fun I was curious about how you pop the clutch. I've always had a controlled pop. Probably comes from all the dirt bike riding i used to do. Somebody told me to lust let go of the clutch. I haven't had the balls to try it. I rather keep control. Wouldn't think of trying to jump the bike though | ||
| M1combat |
Yeah, controlled is always better. I rode dirt-bikes all my life too. As far as the "power" you get when releasing the clutch - That's the rotational inertia in the flywheel. As I'm headed out my road there's a stretch that's about a 1/4 mile long that has no entrances from either side. About 100' down that stretch is a large dip in the road where water can run across if the creek gets high. The exit of that wash is a perfect jump. About 35 degrees and a very small lip of pavement at the top. If I hit it about 40 or so I can get about 8" height and I think about 4' distance. I would go faster but I'd rather not bottom the suspension. I like to go easy on the bike . | ||
| Prof_stack |
M1 - my Electra-Glide has had a rock stuck in the middle of the belt for 10 years. I've put over 22,000 miles on the bike since. The HD mechanic looked at it some time ago and said not to worry about it. So you're probably okay with yours, even though the XB belt is not as beefy as the big-twin belt. | ||
| Ortegakid |
This is so great! The reason I are an american bike owner is this exact phenomenon!I took the demo ride, and decided to try a little hard throttle into second,bike came up,carried down street,pulled into driveway,signed papers!Been in love ever since! | ||
| Two_buells |
it's zero drive line lash, and it's in the brochure  | ||
| Southernmarine |
"I was curious about how you pop the clutch.......I haven't had the balls to try it. I rather keep control. " You're not the only one. It feels natural that the front end just want's to come up all on it's own.  I'll let it do that, definitely not in a rush to pop the clutch on this 12 yet. After break-in and really becoming familiar with the bike I might attempt it. |
