| Author | Message | ||
     Panic |
1. IIRC it's do-able 2. does the rear mounting block (casting) have to match the chassis (2000) or arm (1997)? Or can I use either one? 3. what else do I need to watch for? Please: I have a reason, just need information. Thanks. | ||
| Aaomy |
no problem it will bolt up just fine, and the mounting block dosent matter. you will need all the steal arm adjusters and also a steel arm axle due to it being longer. also you may need a different shock attaching bolt. other than that it should all work fine. im sure others will chime in with anything i forgot.. hope this helps,, ps post project picks for the rest of us...oh yeah if you run a fender hugger you will need the steal arm version of that too. | ||
| Chasespeed |
http://www.badweatherbikers.com/buell/messages/47623/113393.html?1115687293 http://www.badweatherbikers.com/buell/messages/47623/114002.html?1115693721 This shoudl help you out...kinda reverse engineering..but hey.... Chase EDIT:, Aaron, you beat me while I was looking for your old posts.... (Message edited by chasespeed on August 08, 2005) | ||
| Panic |
Excellent, yes, I read both threads but wasn't sure that the reverse was the same (I don't have any of the parts to try them out yet). The arm will be extended; I assume that since the leverage changes (and may be beyond the adjustment in the shock) the obvious compensation is to extend the arm's lever to give the shock more mechanical advantage. Going to do the math first: the length from the pivot bolt to the lever's shock mount on the arm should be the same proportion of arm length measured from pivot to axle, yes? Viz., if the arm is extended 30%, the lever goes up 30% also. Other poss is a bellcrank, may be able to get rising rate using ricer parts but not yet! Thanks to all. | ||
| Pregrid |
got a nice swingin' arm off my S1 cause I just went the other way if you're interested. Dave | ||
| Blake |
When you extend the swingarm, yes the lever arm increases proportionately, but conversely the load on the rear axle will decrease some, so you might want to just see how it works before planning any modifications. | ||
| Panic |
Yes, that's what I figured - as the wheelbase goes up the percentage on the rear wheel goes down, but it looks like the spring rate changes way faster. Adding 6" to a 16-1/2" arm (pivot to axle at max adjustment) reduces effective spring rate by almost 27%, but the percentage on the rear wheel (just by wheelbase change) is only 10%: 54/(54+6). Does anyone lengthen these arms (NRHS, etc.)? Are they moly or mild steel? | ||
| Hotrodsportster |
NRHS will legenthen the arm for about $200 +/-. Their work is top of the line. Good Luck | ||
| Blake |
Panic, Seems as though you have yoru arms around the issue. Good luck! $275 from Revolution Performance |
