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Old Mar 6th 2016, 01:06 PM   #1
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Question Help: Bumpy track suspension setup

I have a 2014 1199 S that I use exclusively as a track bike. The bike has stock Ohlins forks and shock, resprung for my weight, and sag set by my local shop for the track. There are zero turns of preload on the forks and three threads are showing on the preload collar for the shock. The shock's eye to eye length has been set to 307.5mm and the forks are in their stock position in the triple clamp. The bike has 5.5k miles on it and the forks and shock have *not* been serviced.
I've been doing most of my riding at a tight 1.8 mile local track where I am 11 seconds off the course record. The track surface is definitely on the bumpy side.

I'm having a few problems:

1) I've experimented with the OEM damping settings in race, sport, and wet mode to find something that feels good. Wet mode is felt the best of the three so I used it as my starting point. Now I'm using 28 compression and 24 rebound on the forks and shock. 31 is full soft. So far going softer on the damping has always felt better and I have not seen performance being impacted negatively.

2) Predictably given the lack of damping support, the forks are bottoming out according to my zip tie. I suspect that this is happening on the brakes and not as a result of a mid corner bump. For reference if I run with race mode's default damping settings the zip tie ends up 10-15mm from the caliper casting.

Is it possible to get more compliance over the rough stuff while also getting additional support for braking from the front end? I'm still hitting areas where I have to lift myself out of the seat to allow the bike to move on its own. I assume this shouldn't be happening to a well sorted bike?

EDIT: Before anyone says it I know the forks and shock are probably due for being serviced and that new oil would probably make some difference. If the bike is going to be down for suspension changes (springs, valving, service, etc) i'd rather do it all at once.
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Old Mar 6th 2016, 03:16 PM   #2
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I just sent my stuff to mike at MDM. He is a great guy and super knowledgeable, his prices are very reasonable too.
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Old Mar 6th 2016, 08:41 PM   #3
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You can try adding 5ml fork oil to each fork legs, and add 5ml more if it doesn't not solve the problem. That's what i did (my track is ultra bumpy and i found i was bottoming out during hard braking at the end of backstraight) and it gave me 4-5 mm extra reserve.
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Old Mar 7th 2016, 01:08 PM   #4
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Usually giving yourself another 5mm rear sag will give you a bit more traction in the bumpy stuff.


Front sounds soft enough as is typical on a Ducati, maybe to soft since you were bottoming out with current settings.
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Old Mar 7th 2016, 01:46 PM   #5
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Also what tire/pressure are you running?
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Old Mar 7th 2016, 06:43 PM   #6
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Originally Posted by GK1199R View Post
Also what tire/pressure are you running?
Superbike slicks. SC1/SC2 F/R. 33f 29r hot off the warmers.
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Old Mar 8th 2016, 03:54 AM   #7
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Originally Posted by BTrain5489 View Post
Superbike slicks. SC1/SC2 F/R. 33f 29r hot off the warmers.
Where are you located?
What pace/group do you run?
Do your forks bottom out under braking?


I agree with wfoduck.. Metric Devil Moto Mike is the man. He just redid my suspension and it was amazing this weekend on the track.
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Old Mar 8th 2016, 05:02 AM   #8
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Where are you located?

Texas

What pace/group do you run?

Comparable to what the novices with the local club are doing.

Do your forks bottom out under braking?

I believe thats when it's happening but I'd need to stick a camera on the side of the bike next time out to confirm it.
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Old Mar 8th 2016, 05:05 AM   #9
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Put a zip tie on your fork leg under the dust seal and check how much travel used from how far the zip tie gets pushed down.
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Old Mar 8th 2016, 05:06 AM   #10
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Originally Posted by wfoduck View Post
Put a zip tie on your fork leg under the dust seal and check how much travel used from how far the zip tie gets pushed down.
I run a zip tie. It's sitting at the very bottom of the tube.
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