V4S offset triples - school me

Ducati Forum

Help Support Ducati Forum:

IMA triples about to be installed....Thanks to our man @cycler these arrived in no time and he was able to get a good deal on em.

I am leaning towards going with 28mm offset, anyone think I should go to 27 or even lower right off the bat? @RickD996 @Steven31371, any clearance issues with radiator/wheel when going much lower? Also, how easy are the head bearings to remove from the stock triples and move over to the new triples? Not going to futz with removing the race in the steering stem, so just moving the stock ball bearings over. Any kung-fu with removing them especially the lower one? I assume with a chisel and some careful prying, it will slide off??

PXL_20211214_092300399.jpg

PXL_20211214_092308528.jpg
 
TomFoolery said:
IMA triples about to be installed....Thanks to our man @cycler these arrived in no time and he was able to get a good deal on em.

I am leaning towards going with 28mm offset, anyone think I should go to 27 or even lower right off the bat? @RickD996 @Steven31371, any clearance issues with radiator/wheel when going much lower? Also, how easy are the head bearings to remove from the stock triples and move over to the new triples? Not going to futz with removing the race in the steering stem, so just moving the stock ball bearings over. Any kung-fu with removing them especially the lower one? I assume with a chisel and some careful prying, it will slide off??

View attachment 39876

View attachment 39877
Click to expand...
Man I’d love to help but I had the shop put them on while they were doing a bunch of other stuff to the bike.

Also, I went with the #2 eccentric so I believe that put the bike at 28 mm

Works great for me but it’s super rider specific…I’d try less and add more
 
Personally, I'd buy new bearings for the stem.

And I'd start with stock setting, just to check it feels the same. Then go in 2mm increments and see how you go.

I've never fitted these before though, just how I'd go about it if I did.

Once fitted, you can always take the fork tops off and allow the bike to drop all the way down, check for clearance.
 
Superbike Unilited had issues w shorter? offsets but they were also using an H2O rad, fancy forks, etc. Sorting out these unknowns is the other price you pay for these “upgrades”
 
rac1ngsnak3 said:
Superbike Unilited had issues w shorter? offsets but they were also using an H2O rad, fancy forks, etc. Sorting out these unknowns is the other price you pay for these “upgrades”
Click to expand...

Yes, clearly one should never venture into the unknown…it’s dangewus and scawy
 
In the middle of installing the triples.

I'm going to 27 offset so I have to use the insert marked "1" in their instructions. Now this same insert is reversible to get to a 29 offset. IMA doesn't supply any instructions on which direction the insert should face to achieve a 27mm offset.

Should the fat part with the "1" marking face the road or face the rider to achieve a 27mm offset??

8d03b273bc714fd28c55f769bcb2dbec.jpg
9aabb1ca227c0de83611c469614b271d.jpg
 
Last edited:
TomFoolery said:
In the middle of installing the triples.

I'm going to 27 offset so I have to use the insert marked "1" in their instructions. Now this same insert is reversible to get to a 29 offset. IMA doesn't supply any instructions on which direction the insert should face to achieve a 27mm offset.

Should the fat part with the "1" marking face the road or face the rider to achieve a 27mm offset??

8d03b273bc714fd28c55f769bcb2dbec.jpg
9aabb1ca227c0de83611c469614b271d.jpg
Click to expand...


Hole toward the front decreases offset, toward back increases offset….top and bottom have to be the same size offset facing the same direction
 
Fat part toward the rider to get less offset, which in turn will decrease trail and improve turn in


However, if you are trying to get a more stable front end you actually need to INCREASE offset and thereby trail over current setup

On my bike I had good turn in, if anything it was too lively with the loss of gyroscopic forces in my lightened rotating assemblies.

I needed MORE STABILITY not sharper turn in…so my bike has the 2 in there with the fat part toward the front

I like it but will probably change it to a 1 with the fat part toward the front.

For me that balances stability with turn in we’ll

But I’ve taken off close to 20 pounds of rotating mass off my bike, so it’s a good bit more lively through the twisties than most Ducati’s
 
If the bike is turning in well but you want more stability on hard pulls and braking then try #1 with the fat part toward the front

If you are good on stability but want sharper more aggressive turn in then try the #1 with the fat part toward the back
 
Steven31371 said:
Fat part toward the rider to get less offset, which in turn will decrease trail and improve turn in


However, if you are trying to get a more stable front end you actually need to INCREASE offset and thereby trail over current setup

On my bike I had good turn in, if anything it was too lively with the loss of gyroscopic forces in my lightened rotating assemblies.

I needed MORE STABILITY not sharper turn in…so my bike has the 2 in there with the fat part toward the front

I like it but will probably change it to a 1 with the fat part toward the front.

For me that balances stability with turn in we’ll

But I’ve taken off close to 20 pounds of rotating mass off my bike, so it’s a good bit more lively through the twisties than most Ducati’s
Click to expand...
If what you are saying is that the fat part towards the rider reduces offset, then by having the number two insert with the fat part towards the road you went back to a stock 30 mm offset. So there is no change to your trail from factory.

If you see their spec sheet I posted a photo of the number two insert is either a 26 mil offset which is lower than factory or 30 mil offset which is the same as factory depending on which way you insert it
 
The pic that Burton posted is a good visual. This .... isn’t all that difficult. Go stand over your bikes front end. You’ll notice the center line of your forks are in front of your steering stem bolt. That’s your offset. Now just visually imagine sliding the forks back closer to the steering stem (decreasing offset/increasing trail) or moving them father away (increasing offset/decreasing trail).

Might not be the most mechanically correct way to attack it but it works for me.
 

Similar threads

brad8266
2020 V4S Suspension Setup
2
Replies
20
Views
7K
panibadboy
panibadboy
S
Thoughts of a fat man.
Replies
14
Views
2K
able duc
able duc
AKKutz
For Sale 848/1040 Track Bike
Replies
3
Views
1K
AKKutz
AKKutz
Phl
  • Sticky
suspension 101
2
Replies
20
Views
15K
rja4z3
rja4z3
duc
20 Pro Motorcycle Roadracing Riding Tips
Replies
1
Views
2K
Gunny Fitz
Gunny Fitz

Register CTA

Register on Ducati Forum! This sidebar will go away, and you will see fewer ads.

Recent Discussions

Back
Top