GROUP BUY INTEREST - Fluidampr Harmonic Dampner

[Wizard-of-OD]

Inertia is the actual resistance against increase in angular velocity [mr2], and thereby a characteristic for the dampening factor.

....I know what inertia is

Will have a more technical update closer to production.

[quattro84]

Inertia is the actual resistance against increase in angular velocity [mr2], and thereby a characteristic for the dampening factor.
In order to get the OEM dampening factor in the same frequency rage, the inertia level should match. Pretty sure Fluidampr now their stuff but i need a night sleep to comprehend if a V6 and IL5 can share the same damper, since they have very different levels of 1st & 2nd levels of unbalance which needs to be damped.

Example of the IL5 torsional vibration as supplied by LUK for developing the last IL5 VW diesel


Showing that the 5th order of unbalance being most critical in that configuration. The balancer would change the frequency range in to an RPM range which we won't reach.

If you can obtain any more technical data prior to ordering, please do.
But i am still in.. nobody locally can give me any good aftermarket solutions.

[Wizard-of-OD]

How about warranty & life time expectancy? (have quite some experience with HD harmonic balancers, ~5% fails over lifetime, viscous oil leakage, less dampening)
Can we get timing marks on the hub? (ex. firing order or 360deg)
How about the inertia, reckon you are going for stock figures?

Interested in the AAN version.

There will be 2 timing marks on the outer ring. one for the OEM 2.7TT location and one for the 2.2T AAN location. As for warranty, lifetime warranty to the original buyer. Some customers out there running the 1.8T units since 2009? with no issues.

as for the inertia , not sure what you mean but this will not be a bolt on affair due to countless talks with well respected community members. You will need to zero balance your internals which means removal of weight on the I-5 crank.

[quattro84]

How about warranty & life time expectancy? (have quite some experience with HD harmonic balancers, ~5% fails over lifetime, viscous oil leakage, less dampening)
Can we get timing marks on the hub? (ex. firing order or 360deg)
How about the inertia, reckon you are going for stock figures?

Interested in the AAN version.

[Wizard-of-OD]

I'd buy one for my 2.7t but I need one for my AAN first.

They will both be coming at the same time.
2.7TT and 2.2T (AAN) have the same OD.

[orignalS60]

I'd buy one for my 2.7t but I need one for my AAN first.

[Wizard-of-OD]

So even though they market it for the AAN it's the wrong pulley?
Also how much would you need for this one you're trying to have
made?
Also with the fluidampr you have to get it balanced with
your rotating assembly correct?
I was reading your posts above.
So no bolt on affair. If it's better than whatever else is out there
you can put me on the list for one. What's the wait time on these?

Sorry for all the questions.

no worries on the questions.

1. Correct. The AAN crankshaft pulley is balanced with the rotating assembly hence why Audi made the accessory pulley and timing belt crankshaft cog as 1 unit .i.e. in order to take the accessory pulley off , you need to remove the main crankshaft bolt.
2. They are going to be around $500 USD all said and done.
3. It will not be a bolt on affair which is why we are making them for the B5 S4 (which is a bolt on affair) and adabting them for the B3 S2 motor.
4. Moving forward with the B5 S4 unit so expect another 12 weeks. Just zero balance your rotating assembly.

[orignalS60]

So even though they market it for the AAN it's the wrong pulley?
Also how much would you need for this one you're trying to have
made? Also with the fluidampr you have to get it balanced with
your rotating assembly correct? I was reading your posts above.
So no bolt on affair. If it's better than whatever else is out there
you can put me on the list for one. What's the wait time on these?

Sorry for all the questions.

[Wizard-of-OD]

Doesn't a fluidampr already exist for the AAN? It's been on 034 for awhile. You can purchase it on their website.

That was designed for a 1.8T 4 Cylinder engine in mind. It is also the incorrect OD for the AAN motor.

[orignalS60]

Doesn't a fluidampr already exist for the AAN? It's been on 034 for awhile. You can purchase it on their website.

[Wizard-of-OD]

I love this in theory.

But I hesitate with the difficulty in sourcing new replacement serp. belt tensioners.

If you are not running A/C then I have a set up that will work for you. It uses the MK4 2.0 8V / 1.8T belt tensioner ....oh about $3 at your local breaker.

[PRY4SNO]

I love this in theory.

But I hesitate with the difficulty in sourcing new replacement serp. belt tensioners.

[Wizard-of-OD]

Doesn't need to be that precise.

...it was a joke.
0.001" is how precise the CMM both INA and to a point Fluidampr have access to. Don't need more than that.
Let me know if you are interested in one.

[kenax]

0.0001X" precise?

Doesn't need to be that precise, as the machining needed will be done at 0,01..0,02mm (roughly half a thou to a thou as you call it). We do have a DEA Mistral coordinate measuring machine if you want to get silly and really go that precise (MPEe = 3.5+4 x L/1000). That machine is capable (in theory) to go below 0,1mju (that's a tenth of a thousandth of a millimeter, which at that level is already 25,4 times more accurate than your request). Although at that level the isolated concrete slab under the machine will receive vibrations from the sand below so the measurement is not really accurate after all.

The 3D scan I have is at around 0,1mm accuracy range (four thous in the Joe-land scale) and it gives accurate enough reading for the stock cast iron blob.

Either way, I can deliver what's needed if someone wants to pay.

[Wizard-of-OD]

I have very precise 3D scan of the oem damper so I know pretty well where the offset center of mass is at. This can also be verified and inertia tested in a tester I have access to.

0.0001X" precise?

Just out of curiosity, if someone is ready to go the length to balance the crank to zero, can they not address the damper OD-related issues by growing the V-pulley on the alternator etc to suit the minimum needed OD for the damper? Or could the damper be moved towards the engine so that the V-pulley would be in front of the damper itself?

The issue with the v-belt is that it will not work with the hub adapter AND dampening ring. As it is right now , we are 8mm infront of the OEM AAN pulley for a dampening ring. Any further and it will not fit.