| Author | Message | ||
     Rocktoy4me |
I am looking at stepping my xb12 down to the the 9 gearing either way. That is not that this threads is about. I have seen where a few people who are running the aluminum primary gears and clutch baskets to help with the rotation mass...the cost isnt that much more that buying a factory xb9 gear. Anyone have any negatives before i order. I have heard there has to be a little machine work done because they are made for the sportser primary case but that doesnt bother me. Anything else? http://evoindusa.uia.net/index.php/cPath/10_24?osC sid=5c6050c5c2c5c0f29eb72968d7b886d8 thanks in advance Seth | ||
| Panic |
Yes - it's not going to do much. The change in stored inertia ~ roughly as the square of the RPM, and the 4th power of the diameter. The clutch turns too slowly for best effect; 38/56 means the effect of a weight change at the clutch is only 45% as much as similar weight off the crank at the same radius. The engine sprocket turns fast enough, but far too small to do much. Summary: it helps, but very $$ per quanta of effect. | ||
| Xldevil |
You can drill out the engine sprocket.Saves weight,costs less.  | ||
| Xldevil |
Another,comparative look  As you can see,the unmodified engine sprocket in the middle has so many unwanted beef. (Message edited by Xldevil on December 30, 2008) | ||
| V74 |
that looks great but how strong is it,is it durable enough for street use ? | ||
| Xldevil |
I´m riding it in both of my engines,Cyclone and Sportster for more than 50k kilometers without any issues |
