| Author | Message | ||
     Stack |
Does anyone have any information on the transmission. I am hoping that the new motor also means a completely new transmission that shifts more like a superbike should. Can't wait to shift without the clutch again. stack | ||
| Josh_ |
slipper clutch and 6-speeds, ought to be at least a little different than the old one ;) | ||
| Gentleman_jon |
There is a lot of information on the gearbox on the 1125R mini site. It has almost nothing in common with the current set up. http://www.buell.com/en_us/bikes/sportbike/1125R/# Launch the mini site, Skip intro, click on "complete power", go to features>drive train Bottom Line: six speed vertical stack helical gear drive, (no primary chain) compensated front sprocket (cush drive) In other words, everything you're hoping for.  | ||
| Stack |
I thought I read something about straight cut gears maybe I am confused or they were talking about something else stack | ||
| Jackbequick |
It did say straight cut gears but that is an okay thing. All the good constant mesh transmissions have straight cut gears. But not all transmissions with straight cut gears are equally good. The fixed gears in a transmission that drive the layshaft can be helical gears but the sliding gears can't be because they would not slide in and out of engagement easily enough. The helical gears on the primary drive are always in engagement so they can take advantage of the stronger and quieter helical gearing. Jack | ||
| Yohinan |
The only thing that got me was the final drive ratio. With the six speed I figured that would have dropped a bit but it's the same as the current trans. Maybe they just wanted the extra gear to stay in the powerband more until reaching sixth, I dont know. Then again maybe I read the sixth gear ratio incorrectly. | ||
| Stack |
All good info thank you all for shedding the light stack | ||
| Barker |
looks like a close ratio 6 speed not an 6th gear over drive. Looks like str8 cuts on the images from the microsite. | ||
| Buellboiler |
"...are always in engagement so they can take advantage of the stronger and quieter helical gearing." Jack - the straight cut gear is by far stronger than the helical gear. The helical gear is by far quieter than the straight cut gear. Think about the surface area (contact area) between gears and it is easy to see how the straight cut gear is stronger. Boiler | ||
| Spiderman |
Helical cut gears are used in the 1st and 3rd gear dude to EPA noise testing. Those are the gears, I believe, they do there noise testing at. | ||
| Jackbequick |
Boiler, You're probably right. But think about the initially smaller, steadily increasing then decreasing contact patch. I think of that as less stressful as compared to the stress of the immediate and full width contact of spur gears. Less impact or something like that. Jack |
