| Author | Message | ||
     Babired |
Okay Guys help me out. I'm studying Rebound V.S compression damping and I still have no Idea why we ride on inverted forks. What make inverted forks different from regular mounted forks. Another question is when do you change your suspension oil? Answer is.... for regular street bikes about every 2 years 10 to 15,000 miles. For race bikes twice a year, for dirt bikes about every other race. And last why do you have to change it. Answer is it breaks down just like engine oil. I'm thinking because of heat/cold cycles would break the oil down. HELP! SOON! K (Message edited by babired on April 04, 2009) | ||
| Eboos |
Just taking some guesses here, I may be wrong. The lowers on inverted forks are lighter then those on conventional forks, thus reducing unsprung weight. Also, inverted forks tend to be laterally stiffer then conventional forks. Both have nothing to do with damping. Change you fork oil every year. | ||
| Court |
This is a start . . . I've got plenty of books. If you need to get real technical send me your address and I'll send you the "science" of it all.  | ||
| Court |
Take this too . . . eventually someone will ask you about your Buell. After all the opinion, BS, beer talk and boy racer tales fall short . . . it's always good to let folks know there is REAL SCIENCE behind this. There is a huge chasm between what many folks think . . . and fact. For one of the definitive references, see Abe Askenazi's Master's Thesis on the Dynamics of Two-Wheel In-Line Vehicles.  Source: Motorcycle Dynamics - Vittore Cossalter - 2nd Edition | ||
| Xbmacon |
God I love this website! Buells, science, and equations....I'm drooling. we need a motorcycle science section... Good show Court! | ||
| Babired |
Okay inverted forks for stiffness but we have the compression damping clicker on the bottom of the fork near the wheel so inside the 2 tubes everything is the same upside down. Most likely being the only Buell rider down in Total Control Instructor training I think I need a quick answer for this and it looks like for more stiffness. Is this the quick answer? Do you know what cartridges we have inside out fork tubes? I know it has to be multiple stage cartridge. K | ||
| Court |
Stiffness is THE answer. Some forks have the rebound control in ONE side and the compression damping in the other side. Don't be confused if you see only one control. If you need a quick 10 minute lesson prior to doing your class let me know and I can hook you up with one of the suspension engineers for a "thumbnail chat". | ||
| Babired |
Wow thanks Compression is on the top and rebound is on the bottom I think. But with Buell forks inverted is it the other way? keep it simple I'm still trying to wrap my brain around this, and would like to impress Lee Parks at the same time  K | ||
| Court |
Kath: On your bike the small screws atop the fork legs are the REBOUND ADJUSTMENT in each leg. The (I think it's blue) hex looking nut that the REBOUND ADJUSTMENT is threaded into is the PRELOAD ADJUSTER NUT. IMPORTANT NOTE: On bikes (like your Ulysses) it is very important that BOTH legs be adjusted the same. SIDE NOTE: Your Ulysses has 4.65" of fork oil ( as opposed to the 4.49" in the TT forks) in each leg. This is the distance, with the leg held vertically, from the top lip of the fork tube. Before you head off to your class tomorrow, if you have the time and want to sound like a real geek, take a read on THIS and know that there are some good books out there. Court | ||
| Babired |
Thank you Court, I'll be coming back to Bad Web and will visit the link as I travel and when I'm in school. I got my new shiney bags and I'm starting to pack tonight Man am I excited! I knew the uly had more than the average bike and you know Lee Parks is making me become a geek Tracy Martin has been my mentor now for more than a month. K | ||
| Babired |
Hey Court I have a good one for ya Last night I went thru my suspension questions with Tracy M he told me he is writing about a ZX6 the compression and rebound damping settings are both on top. Today I'm going to see if I can use the XB9SX for the demo on front fort damping we're going to try and take it to both extremes. All the way in and all the way out. K |
