14T Sprocket - Ducati.ms

Darsey · Jan 18th, 2012, 2:25 pm

What are the benifits of a 14t sprocket on a 1100 evo hyper guys

TOP_DUC · Jan 18th, 2012, 2:32 pm

More wheelie FUN...! Plus quicker accleration, smoother low rpm response. I have a 190/55 rear tire and it runs ~65 mph @ 4k rpms. Right in the meat of the power band so it will accelerate like a rocket from there. Top speed is ~133 mph, drag limited fully tucked. Could be faster without winter gear flapping in the breeze though...

Drinky · Jan 18th, 2012, 3:00 pm

Downsides: more wear on the chain, slapping against swingarm, adverse effects on suspension.

It would be better to go up 2 or 3 teeth at the rear, but that's a bit more expensive than changing the front sprocket.

@ Top Duc

I've had a 190 rear, and it really sucked. Not only did it give me LESS grip, it also turned in much slower than my current 180 rear. It did look cooler though

TOP_DUC · Jan 18th, 2012, 3:15 pm

I haven't had any problems with the 190 tire...? I've run it right out to the edge and had some chattering under hard braking, but the slipper clutch corrected that. I have had the tire slide a bit on corner exit with WOT, but turn-in and mid-corner feel are fine. I expect the tire construction/rubber compound has more to do with the "feel" than the slight size difference... YMMV

Oh, and there is no chain slapping or adverse suspension reactions either. I tend to suspect a placebo effect from the power of suggestion may be a factor in the 14T front is "bad" reports. The facts are that a 14T front runs a slightly smaller radius and if I were running at Bonneville for a speed record, I would run as large diameter sprockets as I could fit to reduce that microscopically measured radius drag, but for any other purpose, the 14T is a no-brainer to help the big twins attitude at lower speeds...

vb796 · Jan 18th, 2012, 8:10 pm

I have a 796, love the 14t front !! Way smoother in traffic and slower speeds . No swing arm slapping noticed yet.

HyperDuc796 · Jan 18th, 2012, 9:17 pm

Properly adjusted chain = no chain slapping. True story.

nethern · Jan 18th, 2012, 9:40 pm

Quote:

Originally Posted by jjernigan1

I have a 796, love the 14t front !! Way smoother in traffic and slower speeds . No swing arm slapping noticed yet.

I put a 44 rear instead. but the low end problem is still there below 3000 rpm

TOP_DUC · Jan 18th, 2012, 9:50 pm

I have TWO Ducatis that so MANY people have said run like crap and have all kinds of problems at low rpms even after making the recommended changes, yet I don't seem to have any of those problems. Maybe finer throttle control is the answer...?

djauman · Jan 18th, 2012, 11:00 pm

Supersprox 15f 43r 520 conversion on mine...love'n it. Essentially the same as dropping one tooth in the front but I wanted less sprung weight by going to a smaller chain, plus I got a cooler looking rear sprocket and gold chain....looks AND performance....yes please!

nickd64 · Jan 20th, 2012, 1:24 am

Quote:

Originally Posted by Drinky

Downsides: more wear on the chain, slapping against swingarm, adverse effects on suspension.

It would be better to go up 2 or 3 teeth at the rear, but that's a bit more expensive than changing the front sprocket.

@ Top Duc

I've had a 190 rear, and it really sucked. Not only did it give me LESS grip, it also turned in much slower than my current 180 rear. It did look cooler though

Drinks, have to disagree. I have modified and run 14 tooth front sprockets on all my 2v Ducatis. With the Hypermotard on 14/42 525 presently. I've never suffered slapping or adverse suspension effects. If fact in my part of the world this is considered a pretty standard modification. Although I do concur on the 190 rear tyre. Don't see any benefit from increasing the the diameter. 180 is optimal IMO.