I've heard that but after 4 Ducatis with the same mod no problems for me. I certainly wouldn't go more than one tooth though on this bike. It does feel more lively in the lower ranges and our US speed limits make the stock bike feel like it's lugging. I'm rarely able to get over 80 mph except quick bursts so less top end is meaningless. If I were in the western US it would be a different scenario.
The pre DVT 6th was defo and overdrive. The DVT it isn’t imo. It drives forward as hard as the gears below it.
My experience on both track and road tells me it’s not. The o”d 9ne, in top, would barely accelerate for overtakes under 90. The new ones drives harder at 70. It’s a gear now, not just something to sit in and cover big miles
I recognise overdrive as alsmot not acceleration. That isn’t the case on the DVT. It was on the previous motor. Don’t have the technical knowledge to know what that means in terms of gears...but I know if a bike accelerates
Is it the lower number/higher number ratio that you’re saying makes it an overdrive? So the 1098 and 1299 top is overdrive too?
You're each using the term "overdrive" to mean two different things. In a strictly technical sense, a gearbox is designed to provide an overdrive if in the highest ratio(s) the output shaft is turning at higher revs than the input shaft. Changing sprocket sizes cannot alter this feature. From the perspective of a rider, a ratio is an overdrive if it is so high that limited acceleration is available, so that ratio is used mainly for relaxed cruising. This can be changed by using alternative sprocket sizes.
Yes mate low-num/higher num = overdrive, these are the ratios that most modern big Ducatis use, I haven't looked at Panigale ratios but 1x98 and 1200 motors use this same ratio set. As you can see the top two gears are overdrives - you still get forward motion (obviously) but at a reduced rate. As the second number gets bigger (relative to the first number) the more the gear is an overdrive. When they are exactly the same number you are getting 1:1 gearing - but you also need to look at the primary gears ratio as this affects the overall gearing in combination with the 2 gears (those numbers) per gear-selected in the gearbox. Just looking at the gearbox and ignoring the primary drive (which is fixed) if you had 22/22 or 1:1 the output shaft is rotating at exactly the same speed as the input shaft, anything less than 1:1 is an overdrive, the 'overdrive effect' becomes greater as the ratio number gets smaller than 1 ie 0.5 is much more of an overdrive than 0.9, but they are both overdrive gears: 1st: 37/15 = 2.467:1 2nd:30/17 3rd:27/20 4th:24/22 = 1.091:1 5th:23/24 = 0.958:1 6th:22/25 = 0.880:1 This is what @Pete1950 refers to in his first definition above. @bradders I reckon it's the cam timing being modified by the DVT at higher RPMs that is giving you the extra oomph you are experiencing maybe? I say this as I'm guessing the primary gears ratio is exactly the same as all the other big pre-Panigale twins.
Pete has described it perfectly. So in my mind they aren’t an overdrive. Even if technically they are as it’s kess than a 1:1 relationship
I drop my front sprocket down by one tooth, what a difference it made. The revised gearing suits the bikes characteristics so much more than the standard gearing. The only pain with changing the front rather than the rear sprocket is you have to break the chain to remove the sprocket. Desperado
I drop my front sprocket down by one tooth, what a difference it made. The revised gearing suits the bikes characteristics so much more than the standard gearing. The only pain with changing the front rather than the rear sprocket is you have to break the chain to remove the sprocket. Desperado
You don’t have to break the chain, I’ve changed the front sprocket and put it back to standard again without having to do it. It’s fiddly and a bloody tight fit, but you can do it.
I made the change to 42 rear sprocket, I ride the bike in town a lot and it gives more acceleration at low revs. The only downside I found was a little more vibration (tingle) on the motorway if you sat at 80MPH, (above or below this it's fine.)
I think its one of those mods that suit some due to the type of riding they do. Yes if you do a lot of motorway/open roads then leave it alone. Short twisty stuff fast take offs them maybe its for you. The DVT does make quite a lot of difference when overtaking in high gear. Thats why tey spent an age developing it. I have 2017 S & full termi with upmap so do not have the slow speed jerkiness. But do notice on the twisty,s i am in & out of 5th 6th a lot.
