| Author | Message | ||
     Al_lighton |
While doing some airbox configuratin changes (see here, I found a couple things under the lower airbox cover that you may want to look out for. First, the O2 sensor wire was stretched VERY tight over the surface of my rear rocker box. This was due to how the connector was tied off. chanign the tie wrap and connector location relieves this. I have no doubt, based on the rub marks the wire was making on the surface of the rough rocker box cover, that this would have eventually rubbed through the wire. If you look carefully in the first picture below, you can see how the connector is on the back side of the braided sheeth, and the wire is pulled tight underneath that sheet and then stretched tight. Snipt he tie wrap, shuffle the order of the connector and the sheethed hose, and there is plenty of O2 wire slack.   Second, once I put the open airbox kit on, I heard a knocking sound at lower RPMs that I could never hear before with the upper cover in place. Upon disassembly, I found the culprit. The upper engine mount has a little bit of interference with the lower airbox, and raps against it during lower RPM engine operation when the isoplaner vibration isolation system is in dynamic amplification ( 1.4-2K RPM). I don't hear it once the system goes into the isolation frequencies.  For now, I just put a rubber washer underneath the two back screws on the lower airbox to raise it slightly. YMMV, that's how mine was, yours may be different. Mine is an early serial number XB12X. Al (Message edited by al_lighton on December 03, 2005) | ||
| Brotherbuell |
Thanks Al. I'm going to check the O2 sensor wire right now. (Message edited by BrotherBuell on December 03, 2005) | ||
| Al_lighton |
Just a note, something that may not have been clear. The interference with the upper engine mount bolt has NOTHING to do with our open airbox kit, other than that it took the installation of that kit to be able to hear it knocking. That interference is likely present on all 06 bikes that use the big frame. Al | ||
| 2_spuds |
Thanks for the heads up Al, we have some snow in the forecast for tomorrow so it will be a good time to have a look.This really is a great website. | ||
| Dragon_slayer |
Yea thanks Al. I will put those items on my winter check out list. I know I had to reposition the rear shock remote adjuster because I could not get to the adjustments plus the hose was rubbing on the rear shock spring. I also need to take care of the seat base rubbing on the rear rocker cover. I will also install the saddle bags. They have been sitting at the dealer for a month and a half now. Long trip to pick them up and maybe now I can hit a Christmas sale at the dealer! I also look forward to your tech comments on your improvements. I deal with tech facts not popular opinions (too much unsupported BS). I am sure you will find most of the gains on the intake side. | ||
| Snub13 |
Slayer; what are you planning to do to fix the seat / rear rocker cover issue? | ||
| Snub13 |
Another question; With the "open air box" and "cold air induction" is there any loss to the off road abilities (ie; water crossings, mud) also, what about wet weather? | ||
| Dragon_slayer |
Snub13, can you say a rotary power tool with a coarse sanding drum? A "coarse" you can! Really easy work for a RC airplane modeler. | ||
| Snub13 |
If only I were an RC modeler. But I get it. Thanks | ||
| Chadhargis |
I've got to ask a stupid question...not at all uncommon for me!  Why sand down the seat? Since I assume the metal is harder than the plastic, won't the rocker cover do it for you over a few thousand miles? That seems more fun to me than grinding my seat. LOL! | ||
| Dragon_slayer |
Chadhargis, let's see, metal is harder than plastic but you must change that hard metal saw blade after a time of sawing that "softie" plastic. Most things will wear if rubbed long enough. Just take a look at the mark on the rocker box. Besides why take away my fun! Snub13, with enough patience, time, commitment, and MONEY you too can be a RC modeler. And if you want to fly the model airplanes you also need good eyesight, reactions, and eye to hand coordination. And like most things in life, "If it was easy, chipmunks would be doing it"! (Message edited by dragon_slayer on December 08, 2005) | ||
| Snub13 |
It sounds like I would be a natural RC modler........with the exception of the patience, time, commitment, money, good eyesight, reactions and hand/eye coordination! I'll be over with the chipunks if anyone is looking for me....  | ||
| Dragon_slayer |
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| Chadhargis |
Anyone else checked their O2 wire? I'm wondering if this is the same on all Ulys or if it's unique to one bike. Who knows, could have been a Monday morning bike and the person installing the wiring didn't have their coffee yet. | ||
| Jim_sb |
We need to come up with a list of things to check. I don't even know what a "compensator sprocket" is. Sounds like: 1. Seats rub on rear rocker box cover (not a big deal) 2. Compensator sprocket 3. O2 sensor wire. Anything else? Jim in Santa Barbara | ||
| 2_spuds |
I had the identical marks on my airbox and the o2 wire was also tight.I clearanced the airbox with a dremmel and fixed the wire as Al suggested,no problem. The two slash marks in Al's picture were caused by the crimp on ground terminal in my case and there was room to tap it down closer to the frame and provide some clearance. | ||
| Buelldyno_guy |
Here is also another one to watch for! Yesterday while Al and I were in the dyno room on his bike one of the Jiffy Stand (Uly side stand) bolts failed on our Demo bike outside. Al and I took a look and believed that there might be an issue with the fit of the bolt shank. I contacted H-D Buell Tech Support going over our findings and for warranty repair authorization. I replaced the bolts adding a washer under each and using blue Locktite. The failed and bent bolts are on their way back to the motor company for review by the Buell Engineering Staff. It looks like they may work loose right before failure. So take a look and I hope this helps . ... Terry | ||
| Electraglider_1997 |
Compensator sprocket?? I've read elsewhere on BWB board that the XB bikes do not have a compensator sprocket and that was maybe a reason why the bike jerks in the first gear. I looked at the service manual and see no compensator sprocket. My big twin does have a compensator sprocket and it is clearly called out and shown in the service manual. The ULY service manual only mentions the word compensating on page 6-17 where Figure 6-26 is concerned. Figure 6-26 is a photo of the clutch's Compensating Spring Set and this is not the same as a compensating sprocket which on my Electraglide is not on the clutch but is on the output of the crankshaft. | ||
| Al_lighton |
"Compensator Sprocket" is probably the wrong name for it for XB/Sportsters. But the location is identical. The nut that holds the alternator rotor/Primary chain sprocket to the end of the Flywheel in the primary case originally had a torque spec of 190-210 Ft-lbs. A service Bulletin released mid-05 changed that value to 240-260 ft-lbs. I think the service Bulletin was something like TT-211 or something like that, I posted it here a few months ago. My nut came loose during recent dyno testing. It makes a very bad noise once it is really loose, and makes a not great noise when it is just a little loose. Apparently it can be quite fatal to the engine on XBs since they got rid of the Tapered roller bearings on the main shaft and the end play take-out requires that nut to be snugged tight. My splines are likely not happy with the 30-50 dyno pulls that we did while the nut was backing off, but I think we caught it before any terminal damage was done. Given the timing of the service bulletin, and the fact that mine is a very low Serno Uly, it is conceivable that mine was not torqued to the higher spec from the factory. YMMV Bottom line: if you hear any suspicious "knocking" noised from the lower part of your engine, get that primary cover off ASAP and get that nut tightened per the manual and the new torque spec. And report it to your dealer if you don't have them do the work just in case your engine has had other damage done before noticing it. Al | ||
| Electraglider_1997 |
Thanks for the clarification. | ||
| Dragon_slayer |
Damn Al, get that bike off the dyno and out on the road. We want you to continue to find the other problem areas for us. It's too cold and snowy here in Ohio for proper product wring out. Unless we are talking cold weather gear!  |
