Extended Swing Arm Shock and Spring Rate

The swingarms have different part numbers, but I'd think you could get to 13mm with different gearing, longer chain and/or eccentric hub position.

What I’m wondering is who is the myriad of suspension tuners advising @Steven31371 to get an extended swingarm for wheelie control? Sounds like you’re asking the wrong questions to the wrong people.

I’ve got a bridge to sell you after the extended swingarm doesn’t work.

My understanding of the extended swingarm is it helps improve edge grip, more than antiwheelie.

I don't find the bike to be a wheelie monster machine anyway, it's not on my list of problems! I have the DWC on the lowest setting, bike rarely wheelies. Out of pitlane you always get a cheeky wheelie, but you're accelerating from very low speed in first. Even those Dukes with the extended drag swingarms wheelie in first off the line. 35mm will make a marginal difference to a problem that isn't really a problem

RickD996 said:

My understanding of the extended swingarm is it helps improve edge grip, more than antiwheelie.

I don't find the bike to be a wheelie monster machine anyway, it's not on my list of problems! I have the DWC on the lowest setting, bike rarely wheelies. Out of pitlane you always get a cheeky wheelie, but you're accelerating from very low speed in first. Even those Dukes with the extended drag swingarms wheelie in first off the line. 35mm will make a marginal difference to a problem that isn't really a problem

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I imagine it would add stability and control especially while sliding, making the bike less “snappy” in exchange for agility.

I haven’t ridden a Pani but I’ve been trying to wheelie my SF and like you said, unless it’s in first gear it really doesn’t want to lift the front wheel.


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My advice would be to somewhat distance my self from the advice being given by anyone who hasn’t ridden the bike with the stock swing arm vs the extended. Second to that would be the actual manufacture of the part/parts who has intimate knowledge of exactly what to expect from the part.

Unfortunately, there seem to be a lot of opinions on this board with regard to technical intervention strategies from guys who don’t ride the application, have never ridden the application, have never seen the part or parts installed in the application being discussed or knows anyone who has. A guy who owns a bone stock 959 (with regard to anything other than general cosmetic upgrades) coming on here giving a guy advice about an extended swing arm on a V4 is a bit of a stretch but it happens here every day.

If you own it, use it, have some real world pro/con data great, post it up otherwise, maybe sit and listen. Also to the guys asking questions, maybe qualify the question with a bit more diligence. I ask probably 90% of the questions I have “off line” specifically to avoid the “water fountain” gossip that will ensue if I go public with it.

It’s fairly obvious on this board who has the “goods” in what areas and who’s looking for a place to kick it and engage in guy chatter. PM is your friend. I try my best (not always successful) to post photos, specs and “what happened to me” when attempting to answer tech stuff and stay out of stuff I don’t have any experience with (I did say try).

The reason why his wheelies so much is he added 3 teeth to the rear sprocket. I did the same to my track V4 but also modified the rear geometry a bit. It wheelies, but not uncontrollably. Biggest issue he's gonna have with an extended swingarm is getting brake lines long enough and rerouting sensor wires so they'll reach. I simply flipped my eccentric hub upside down and it required more work than I ever would have imagined.

MaverickiB said:

The reason why his wheelies so much is he added 3 teeth to the rear sprocket. I did the same to my track V4 but also modified the rear geometry a bit. It wheelies, but not uncontrollably. Biggest issue he's gonna have with an extended swingarm is getting brake lines long enough and rerouting sensor wires so they'll reach. I simply flipped my eccentric hub upside down and it required more work than I ever would have imagined.

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Flipping the hub is going to change geometry. You did correct for that yes? Also mods to the mentioned items, I wouldn’t even factor that as those mods are extremely easy to do and resources are not a factor in his case.

Yeah, I accounted for the geometry change, which was the point of flipping the hub. I know those things aren't difficult necessarily, but just saying with these types of mods that there's often aspects people don't think about. Fancy swingarm shows up and you think you have everything you need to get it on and back on the road in a day or two only to find out you gotta order little bits here and there to make it work. What seems like a straightforward simple job on this bikes often isn't.

I’m pretty sure if Tommy Bridewell can ride to 2nd in the BSB champ on the stock swingarm that you’ll be ok.

rac1ngsnak3 said:

I’m pretty sure if Tommy Bridewell can ride to 2nd in the BSB champ on the stock swingarm that you’ll be ok.

https://www.bikesportnews.com/news/news-detail/factory-swingarm-a-step-closer-to-wins-hopes-oxford-ducati-boss

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I didnt get the impression that he was on the stock swingarm. It says he isnt on the newest swingarm. There have been multiple revisions to the Corse swingarm, and it seems he was just running an older version instead of buying the latest and greatest.

rac1ngsnak3 said:

I’m pretty sure if Tommy Bridewell can ride to 2nd in the BSB champ on the stock swingarm that you’ll be ok.

https://www.bikesportnews.com/news/news-detail/factory-swingarm-a-step-closer-to-wins-hopes-oxford-ducati-boss

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LOL prey much exactly what I was talking about. The worst offender is the guy who not only has zero experience with the subject matter but relentlessly cuts and pastes media.

endodoc said:

Flipping the hub is going to change geometry. You did correct for that yes? Also mods to the mentioned items, I wouldn’t even factor that as those mods are extremely easy to do and resources are not a factor in his case.

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Already ordered extended lines to do it with.




Maverick thanks for the heads up on that.

MaverickiB said:

I didnt get the impression that he was on the stock swingarm. It says he isnt on the newest swingarm. There have been multiple revisions to the Corse swingarm, and it seems he was just running an older version instead of buying the latest and greatest.

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You’re prob right. Looks like he’s on the Corse one same as SBU. But again +30-40 mm is going to make a negligible difference to a normal person and especially a novice one. My point was that they weren’t clamoring for the full beans because it didn’t make a huge difference.


In regards to someone who rides ”bone stock” 959 commenting on a V4 build, I wasn’t aware that physics and mathematics was different depending on motorcycle.

And to those who have ridden an extended swingarm, how significant was the anti-wheelie effect?

The stock bike is plenty fast enough for pretty much anyone. But have fun squandering boatloads of money on Corse parts. Seems the stock v4 is plenty capable in the right hands.

I have ridden the 1299 with the stock swing arm. The 1299 with a standard Pierobon arm and a 1299 with a “soft Pierobon arm. I have ridden the V4R with the stock swing arm and the V4 SL that has an increased swing arm length.

For me, both applications were better with the extension. The bikes felt more planted and for me,, more stable on acceleration. Real world “opinion” with the subject matter. rac, which bikes have you ridden with standard and modified swing arm lengths, it would be great if you could share your actual experience.

There is a little bit of a straw man debate forming here that I’m getting the extended swingarm SOLELY for the purpose of anti-wheelie, and that I’m relying on that alone to help with wheelie.

rac1ngsnak3 said:

You’re prob right. Looks like he’s on the Corse one same as SBU. But again +30-40 mm is going to make a negligible difference to a normal person and especially a novice one. My point was that they weren’t clamoring for the full beans because it didn’t make a huge difference.
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In regards to someone who rides ”bone stock” 959 commenting on a V4 build, I wasn’t aware that physics and mathematics was different depending on motorcycle.

And to those who have ridden an extended swingarm, how significant was the anti-wheelie effect?

The stock bike is plenty fast enough for pretty much anyone. But have fun squandering boatloads of money on Corse parts. Seems the stock v4 is plenty capable in the right hands.

Ducati Panigale V4S Only 2 Seconds Off MotoGP Lap Times

After two days of testing at the Jerez Circuit in Spain, Ducati MotoGP riders pull within GP21 times on a Panigale V4S.

www.rideapart.com

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Oh jeez, that article again.

That was done in wet conditions as far as I can remember. In wet conditions, machines can end up being heavily limited. More power to weight ratio becomes less of an advantage when the conditions limit your ability to apply said power. I don't think the times would be that close in the dry, and regardless, 2 seconds a lap in racing is a pretty big deal.

endodoc said:

I have ridden the 1299 with the stock swing arm. The 1299 with a standard Pierobon arm and a 1299 with a “soft Pierobon arm. I have ridden the V4R with the stock swing arm and the V4 SL that has an increased swing arm length.

For me, both applications were better with the extension. The bikes felt more planted and for me,, more stable on acceleration. Real world “opinion” with the subject matter. rac, which bikes have you ridden with standard and modified swing arm lengths, it would be great if you could share your actual experience.

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I’ve never ridden an extended swinger so that’s why I was asking. I never claimed I did. Not sure why you infer this. This is good info to know. How would this transfer to the street?

endodoc said:

I have ridden the 1299 with the stock swing arm. The 1299 with a standard Pierobon arm and a 1299 with a “soft Pierobon arm. I have ridden the V4R with the stock swing arm and the V4 SL that has an increased swing arm length.

For me, both applications were better with the extension. The bikes felt more planted and for me,, more stable on acceleration. Real world “opinion” with the subject matter. rac, which bikes have you ridden with standard and modified swing arm lengths, it would be great if you could share your actual experience.

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Do you know if the Corse version is still one sided, and what all do you have to change on the rear to run it, i.e. wheel hubs, axles etc?

Didn’t you say?

a bit longer swingarm will mean less electronic intervention for anti-wheelie…I need anti-wheelie for now

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Not really a straw man debate when you literally said this.

rac1ngsnak3 said:

I’ve never ridden an extended swinger so that’s why I was asking. I never claimed I did. Not sure why you infer this. This is good info to know. How would this transfer to the street?

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Dude I don’t know how to say this without sounding like an ass but here goes…I worked my ass off for 30 years to the point where I make a .... ton of money now, and like my toys….and have enough income that if a part makes a toy even marginally better it’s within my means to do so, and I like good engineering.

I don’t think I’ve ever seen you reply to a post here where you were like: “yeah you should do that but here’s some extra useful info”

Dunno why but every mod people talk about here your default position is to just say don’t do it and here’s why, instead of offering technical advice.

Kinda weird to be honest.