Report on 14t change on front sprocket:

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unrazzo

Joined
May 22, 2012
Messages
103
Location
NorCal, USA
Normally on my Ducs I ritualistically up the rear sprocket, but the guys at the shop convinced me to try this instead. It's not as drastic a change as the rear has been on my 996, 848, or any of my monsters, but its a nice improvement:

1. Surprisingly cheap mod, even if the dealer does it. (Mine did it for a little over $100.)

2. WAY better every day rideability overall.

3. MAJOR difference on city streets, even though the pani is not a city kinda bike, 50% of my commute is in the city.
- turns at intersections are practically a diff bike, so much better, no clutch-coasting anymore. Especially good when launching right or left from a light.
- 25-35mph is out of that crap fueling range b/t 3k and 4k rpms

4. Highway riding at 70 is now just outside the crap fueling range in 6th gear... a world of difference. I don't have to ride 80 to stay out of that range, especially great when riding though CHiPy Valley (Mill Valley, CA) on fund-raising days.

5. Launching requires a lot less time letting the clutch out, launches are much less effort and let gassing required.

6. Power FEELS like it's available sooner. This might be psychological, but it really feels like the whole power band is much more on-tap.

Recommendation: If you don't race your pani, I recommend this mod.

Part: $42 USD
Labor: 30 mins
 
Good report.
I'm down with this..

I think it's in my future.
What brand sprocket did you use? and also.. any reason you did the front as opposed to the rear?
I figure less stress on the gearbox by upping the rear sprocket slightly instead.

Thanks.
j.
 
Does this have any effect on the speed reported? Do you have to get it adjusted?
 
humm...i'm under the impression that the vehicle speed is eventually derive from the front or rear wheel speed sensor, since knowing the circumference of the tyres,No?
 
unrazzo said:
Normally on my Ducs I ritualistically up the rear sprocket, but the guys at the shop convinced me to try this instead. It's not as drastic a change as the rear has been on my 996, 848, or any of my monsters, but its a nice improvement:

1. Surprisingly cheap mod, even if the dealer does it. (Mine did it for a little over $100.)

2. WAY better every day rideability overall.

3. MAJOR difference on city streets, even though the pani is not a city kinda bike, 50% of my commute is in the city.
- turns at intersections are practically a diff bike, so much better, no clutch-coasting anymore. Especially good when launching right or left from a light.
- 25-35mph is out of that crap fueling range b/t 3k and 4k rpms

4. Highway riding at 70 is now just outside the crap fueling range in 6th gear... a world of difference. I don't have to ride 80 to stay out of that range, especially great when riding though CHiPy Valley (Mill Valley, CA) on fund-raising days.

5. Launching requires a lot less time letting the clutch out, launches are much less effort and let gassing required.

6. Power FEELS like it's available sooner. This might be psychological, but it really feels like the whole power band is much more on-tap.

Recommendation: If you don't race your pani, I recommend this mod.

Part: $42 USD
Labor: 30 mins
Click to expand...



How does it feel on the track?
 
made the change also 2 days ago, very smooth to ride in traffic, and also pops right in your face in the first 3 gears if you're sitting too far back and twisting the throttle too fast.
 
I may be a ......., but Im not seeing what the actual mod is?


Im very interested since i too drive through the city (Los Angeles) and this sounds like a interesting concept


thanks!



unrazzo said:
Normally on my Ducs I ritualistically up the rear sprocket, but the guys at the shop convinced me to try this instead. It's not as drastic a change as the rear has been on my 996, 848, or any of my monsters, but its a nice improvement:

1. Surprisingly cheap mod, even if the dealer does it. (Mine did it for a little over $100.)

2. WAY better every day rideability overall.

3. MAJOR difference on city streets, even though the pani is not a city kinda bike, 50% of my commute is in the city.
- turns at intersections are practically a diff bike, so much better, no clutch-coasting anymore. Especially good when launching right or left from a light.
- 25-35mph is out of that crap fueling range b/t 3k and 4k rpms

4. Highway riding at 70 is now just outside the crap fueling range in 6th gear... a world of difference. I don't have to ride 80 to stay out of that range, especially great when riding though CHiPy Valley (Mill Valley, CA) on fund-raising days.

5. Launching requires a lot less time letting the clutch out, launches are much less effort and let gassing required.

6. Power FEELS like it's available sooner. This might be psychological, but it really feels like the whole power band is much more on-tap.

Recommendation: If you don't race your pani, I recommend this mod.

Part: $42 USD
Labor: 30 mins
Click to expand...
 
ScottJon said:
I may be a ......., but Im not seeing what the actual mod is?

thanks!
Click to expand...

The front sprocket is replaced by one that has 1 less tooth (and therefore a smaller circumference). Same concept as on a 10 speed--the smaller the front sprocket (or the larger the rear) and the faster you'll accelerate. Because the smaller sprocket shortens the gearing, you'll sacrifice a little top end, but very few people actually will ever see those kind of triple digit speeds.
 
AntiHero said:
The front sprocket is replaced by one that has 1 less tooth (and therefore a smaller circumference). Same concept as on a 10 speed--the smaller the front sprocket (or the larger the rear) and the faster you'll accelerate. Because the smaller sprocket shortens the gearing, you'll sacrifice a little top end, but very few people actually will ever see those kind of triple digit speeds.
Click to expand...

Thank you for that clarification.

I will ask when i bring it in for the next service. sounds like i need this
 
Speedo sensor is on the rear wheel, no impact from gearing changes.
 
^ok sounds good. 80% of my riding is commuting/city with an occassional weekend of riding in the ks countryside. so this may be suitable for me, gonna look into it; thanks.
 
I may try this on my though I enjoy taking to the track. Infact I understand one arm racer did change the rear sprocket up 3 teeth to have the revs in the power band...and you don't have to buy a new chain, I presume!

@unrazzo I live in mill valley too. Hope to see you around
SpeedyJustice
 
Three rear teeth is going to extend the wheelbase. Better for putting power down in a straight line, but might screw up handling.
 
- Speedo is not effected. Drive shaft doesn't meter for the speedo, it's at the rear wheel.

- Haven't been to the track yet... I'll report when I do in Nov.

-I didn't do the rear because the shop recommended trying the front first. The rear requires more parts and labor as well.

- I have not had it pop-up accidentally yet, but it's easier when I try for sure.

-I'm getting some PM's about the part:

AFAM 525 Chromoly Steel Countershaft Sprocket - Ducati Drive Systems USA Inc.
 
Did they shorten the chain?

If not how did they preserve ride height, once it was adjusted out?
 

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