IMU mounting after installing track fairings

I see a few threads about this but none that seem to give a definitive answer as what I need to get to mount the IMU properly.

can someone confirm who makes a bracket for it?

I looked at moto holders and they don't list a specific bracket for it, is it part of the upper fairing stay?


Thanks

i ordered the moto holder upper fairing stay, they state it has the bracket , ill update the thread once I try it

I have moto holder upper fairing. I will find out if the place provided is at the correct angle. It looks legit. I will be at t he track on the 21st.

TwistedRacer had to make his own. I dont think they had the bracket at that point. He says it needs to lay at 45* to read properly.
Hope this helps.


Tom

I have installed the moto holder upper and mounted my IMU , the code is gone at least riding around my neighborhood , I will follow up after my track day on the 11th to confirm I had no isses,

side note for anyone else ordering the bracket, order it with the air intakes as now I have to source new air intakes, ugh

It’s working well but not perfect. On my 3-4th lap every session I’ll get the inertia error but seems to be operating well even once that light comes on. I can still feel traction and wheelie control kicking in so I’m not sure

I tried putting some duct tape between the sensor and the mount to isolate it a bit and reduce vibrations but that didn’t change anything.

I’ll e mail motoholders this week see what they say.

I’ve got the motoholders with the imu mount and it’s useless. Every single session on the first hard acceleration, I get the inertial sensor fault and the dash lights up like a Christmas tree. Also the abs and dwc tabs at the bottom flash as though they are no longer working. The traction control also felt extra intrusive as though it’s gone into a safety mode but that may have just been in my head after loosing all confidence in the system.

Now I don’t know if the issue was the angle in which the imu sits on the bracket or if it was down to insufficient dampening.
Based on what I’ve seen over a couple of forums, I’d say a mixture of the two.

I’m going to try and knock up my own bracket that sits the imu at a closer angle to how the speedometer sits. More like 45 degrees as already mentioned.

The problem is, is that it’s fine under normal riding, it’s only when you really give it some then it has a head fart. Being a track only bike I have no real way of testing it until I get to the track. Then you can waste a day trying to sort it.

To hear from somebody who has successfully solved this problem would be greatly appreciated.

Watching this thread closely
Matt

Speaking with Ducati Race mechanic; Gio, Scott Redding Chief Mechanic, IMU is super sensitive and cause all kind of issues if not mounted correctly


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so here is my conclusion after testing all day yesterday at the track. Im pretty convinced its a vibration thing. If i dont rev my bike out all the way the inertia sensor never trips an error. As soon as i rev it to redline it would trip the error every time.

I am going to email moto holder and ask for a solution but will look at rubber isolating the sensor better. I only put some duct tape under the sensor and that did not help.

I am convinced the angle it is mounted at is correct. When that is wrong like i had it before it will trip off the error almost the first rotation of the wheels

problem as pointed out earlier these are only being mounted on track bikes so you cant test it on the local roads to make sure it is good.

I can not believe this has not been worked out on a several year old bike that is designed to be at the track

I’ve seen posts as far back as 2015/16 about this but no real solution.
I’ve just got a 5mm thick sheet of rubber that I’m going to cut into a sort of gasket to go where the motoholders meets the frame. To isolate the whole fairing stay. And then try to isolate the imu separately aswell.
As I’ve seen somebody mention, the original headlight unit is isolated and then the imu is also isolated again on that.

I’ve broke my wrist so I’ll not be able to test my work.
So I’ll be going off of your findings for now.
Please keep us posted as I feel this issue does need a lid putting on it.

matty90v said:

I’ve seen posts as far back as 2015/16 about this but no real solution.
I’ve just got a 5mm thick sheet of rubber that I’m going to cut into a sort of gasket to go where the motoholders meets the frame. To isolate the whole fairing stay. And then try to isolate the imu separately aswell.
As I’ve seen somebody mention, the original headlight unit is isolated and then the imu is also isolated again on that.

I’ve broke my wrist so I’ll not be able to test my work.
So I’ll be going off of your findings for now.
Please keep us posted as I feel this issue does need a lid putting on it.

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will do,

i was also thinking along your lines of isolating the fairing mount and the imu unit , since its so hard to test and i hate using time at a track day wrenching , ill probable just do both

Hey guys,
I built this today and used all stock dampers.
The IMU will almost be at the exact stock position, the only change is the distance to the oem front fairing holder, which I needed to bridge with that white plastic washer (otherwise my bracket hits the air intake).

If it works, I guess I will only find out at the track next time.

Thoughts?

So time to throw my hat into the ring on this one. I just switched to a Motoholders upper stay this winter. When I bought the bike it had the stock stay. The person that sold me the race bike back in 2018 said "hey I have a Motoholders stay but after going through 3 IMU's a BBS unit and many different ways to try and dampen the vibration we never got to work, so you can just have it with the bike". Well here we are 2020 and I have wasted a track day and swapping IMU's over the next couple of days trying to figure this out. Well it turns out the whole time Motoholders was saying that through extensive testing the 26% works. Everyone including myself trusted them. I thought to myself. Lets take the stock plastic mount put it in place of the Motoholders stay and compare how far off it really was. The delta was exactly 19 degrees. Just as the previous person stated above bike would run fine till you start riding it at a race pace and giving it the mustard. But once you do. Boom, error lights everywhere. So I made a dampened bracket and made up the difference. I am please to say I can now ride the bike as aggressive as I want and the wheelie control and traction control seem to be working as intending again. I will be at NJMP this weekend for a full day of testing. I plan to give it the full beans and see how the data looks. In the mean time enjoy some photos of my progress and measurements of said work. I need to thank @endodoc and Steve from HVMC for helping me get on the right path to help solve this issue. So yeah after EVERYONE was listening to Motoholders stating that 26% would work so many people have wasted days and some big $$$ trying to figure this out. Turns out that you can't always trust the big guys (Motoholders). Sometimes you even need to back check their work.

^good info there

Blade Runner said:

So time to throw my hat into the ring on this one. I just switched to a Motoholders upper stay this winter. When I bought the bike it had the stock stay. The person that sold me the race bike back in 2018 said "hey I have a Motoholders stay but after going through 3 IMU's a BBS unit and many different ways to try and dampen the vibration we never got to work, so you can just have it with the bike". Well here we are 2020 and I have wasted a track day and swapping IMU's over the next couple of days trying to figure this out. Well it turns out the whole time Motoholders was saying that through extensive testing the 26% works. Everyone including myself trusted them. I thought to myself. Lets take the stock plastic mount put it in place of the Motoholders stay and compare how far off it really was. The delta was exactly 19 degrees. Just as the previous person stated above bike would run fine till you start riding it at a race pace and giving it the mustard. But once you do. Boom, error lights everywhere. So I made a dampened bracket and made up the difference. I am please to say I can now ride the bike as aggressive as I want and the wheelie control and traction control seem to be working as intending again. I will be at NJMP this weekend for a full day of testing. I plan to give it the full beans and see how the data looks. In the mean time enjoy some photos of my progress and measurements of said work. I need to thank @endodoc and Steve from HVMC for helping me get on the right path to help solve this issue. So yeah after EVERYONE was listening to Motoholders stating that 26% would work so many people have wasted days and some big $$$ trying to figure this out. Turns out that you can't always trust the big guys (Motoholders). Sometimes you even need to back check their work.

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so you’ve brought the imu to 45 degrees, roughly inline with the dash and all seems to be ok? Can you post a picture from the front so I can see the bracket you’ve made?

I’ve actually been in touch with somebody on Facebook who builds fairings stays and he guarantees it works with the imu but he wants close to £350 for it. I begrudge paying that when I already have the mount. I just require an add on bracket like what you’ve made there. If all else fails I’ll go running back with my tail between my legs and cash in hand.

Let us know how you get on this weekend

matty90v said:

so you’ve brought the imu to 45 degrees, roughly inline with the dash and all seems to be ok? Can you post a picture from the front so I can see the bracket you’ve made?

I’ve actually been in touch with somebody on Facebook who builds fairings stays and he guarantees it works with the imu but he wants close to £350 for it. I begrudge paying that when I already have the mount. I just require an add on bracket like what you’ve made there. If all else fails I’ll go running back with my tail between my legs and cash in hand.

Let us know how you get on this weekend

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Understood. I will have a better answer for you after testing this Saturday Aug 1st. I don't want to get to far in front of the cart on this one since so many have tried. But I have high hopes. No matter how much testing you try to do on a country back road. Nothing replaces the safety and environment of the track.

The picture I have of the new bracket by it self it the best example to look at. I am using the mounting holes provided by Motoholders. I used two isolating washers to mount the bracket to the Motoholders and two more on the IMU itself. This angle give the best idea of what I did. As far as drilling the holes. The mounting holes to the Motoholder are drilled to fit the washers and the IMU holes I threaded to a 6Mx1.0 bolt.

Oh one more thing I found interesting for all. Well really two more things. The V4 has it's IMU offset of center. It resides riders right of the front and the 1299R has two IMU but they are turned 90 degrees and are mounted white back to white back center mounted in the front. Very interesting.

Best,
Blade.

i have a record during an accident with the bike flipping over.
you see the imu stopped working. I dont know why. the highest recorded pitch is ~90°.
so, could be a gimbal lock. maybe.

Blade Runner said:

Understood. I will have a better answer for you after testing this Saturday Aug 1st. I don't want to get to far in front of the cart on this one since so many have tried. But I have high hopes. No matter how much testing you try to do on a country back road. Nothing replaces the safety and environment of the track.

The picture I have of the new bracket by it self it the best example to look at. I am using the mounting holes provided by Motoholders. I used two isolating washers to mount the bracket to the Motoholders and two more on the IMU itself. This angle give the best idea of what I did. As far as drilling the holes. The mounting holes to the Motoholder are drilled to fit the washers and the IMU holes I threaded to a 6Mx1.0 bolt.

Oh one more thing I found interesting for all. Well really two more things. The V4 has it's IMU offset of center. It resides riders right of the front and the 1299R has two IMU but they are turned 90 degrees and are mounted white back to white back center mounted in the front. Very interesting.

Best,
Blade.

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thanks for your work, please keep us up to date on your progress my next track day is in Sept so i have time to emulate what you did if it works. If it does please post as much detail as you can. ....... ridiculous that we are still figuring this out 5 years later on what is a very track focused bike

vcyclenut said:

thanks for your work, please keep us up to date on your progress my next track day is in Sept so i have time to emulate what you did if it works. If it does please post as much detail as you can. ....... ridiculous that we are still figuring this out 5 years later on what is a very track focused bike

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Hello all. Just returned from NJMP. I wish I had good news for everyone. Things looked promising at first. I went out at about a 65%-75% pace. Everything worked very well. I had high hopes for the next session. Went out 1st lap about 75%. 2nd Lap gave her the beans. And guys she didn't like it at ALL. Internal Sensor Warning. BBS Warning. Yellow Triangle with exclamation point lit up. GRRRRRR. When back to our pit. Put more rubber damping on it. Went out 3rd session it was much worse. 4th session tried to go just a tad tighter on the org 1st session try out. Same results if not a bit worse than the 2nd session. At this point we were out of ideas and options to try at the track. So we packed it up and went home a good bit early. NO ONE LIKES TO DO THAT!!!

So it is back to the lab boys. I will keep you posted. At this time I know for sure the 45 degrees on the IMU made a massive difference with allowing me to ride at an easy pace. This pace would be the equivalent to a intermediate rider. My pace when tires and suspension are on point is expert/pro. I ride Black Expert/Pro in most organizations. So that will give you an idea to when I say I am riding at 85%. I rarely ride above that on track days. I may put in a 90% percent lap but that is just to see how the bike is reacting to a recent change on something.

On a good note we solved the fuel tank venting problem we were having the with WSBK fuel tank. The 2nd gear issues was an easy fix. The Corsa linkage was binding a bit. Lastly, we solved the brake binding issue with a small change to the wheels spacers. Cost us a set of $400 brake pads but that the cost of a fully custom WSBK front end.

My next move may be to try DB Holders, maybe mount the org plastic IMU holder to the Motoholders with OEM rubber isolaters on the left and right or go back to stock as a reference point start over to make sure I am not missing something else. I really don't want to go back to the stock unit. That is a last resort. I don't give up that easily.

Stay tuned. Welcome to the land of building Superbikes guys.

If anyone else has luck please post details of what you did. It would help us all.

Best
Blade

Team BaD_Ducati (Bill and Dave) #96 and #11
You can catch us on instagram @BaD_Ducati