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Hello from Fluidampr Guy!

I

inc4203

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Hello Everyone!

My name is Ivan Snyder and I work for Fluidampr. I decided to join as I enjoy getting involved in any discussions that have to do with torsional vibrations and damper solutions. I know this can be a sticky subject on which damper is best. I am not here to get into arguments based on product preference but to educate (for those that do not know) about torsional vibrations and provide facts or answer questions about Fluidampr if asked.

I hope to talk with you soon...

Thank you,
Ivan
 
Welcome to The Truck Stop Ivan! :welcome8:

Nice to see you here and we all appreciate the tech you bring. Thank you!
 
Hey, Ivan ... welcome aboard! It's always nice to have another gearhead that understands a topic area well. The strength of this place is the knowlegable members and the free flow of information, so pull up a chair, grab a java, and look around; I'm sure you'll find lots of discussions to jump into!

Jim
 
Welcome to TTS, Ivan.

3 of my vehicles spin FD's One being the truck in my signature, the other two are on my SBC's..

Good bunch here.
 
Welcome aboard and look forward to technical info.

I have watched some machine tools get balanced and seen some vibration & sound testing on some stationary diesel powered equipment.

1. I was surprised to learn that fan noise was a major component in the measured dB level of the stationary equipment. So I wonder now how much influence does the driven accessories and water pump affect the crankshaft. Is or are there any often missed areas to keep in mind when dealing with overall engine smoothness from the accessories point of view.

2. I guess engine mounts are critical to dampening the engine vibrations also? Are there any no-no's to avoid ie poly mounts with fluidampner or other combinations. What do you recommend as good combinations. Is there any data to suggest engine mounts and slight torsional twisting of the engine block affects crank balance and fatigue?
 
Shiker-

1). Driven accessories can have an effect on the crankshaft if they transmit their own vibration pulses back to the crank, especially through gear sets. They are more of an issue with rubber OEM style and O-ring style dampers that are only effective over a narrow frequency band. The Fluidampr has an advantage of being a broad band vibration control device and combats transmitted vibrations as well as direct crankshaft torsional vibrations.

2). Engine mounts are a secondary type of vibration damping device. They are meant to remove vibrations that are present that are not torsional. They can be from loading during shifting of gears or pulling high loads, or from vibrations that come from the crankshaft that are not covered by the OEM damper. If the crankshaft damper is working properly, the vibrations that come from torsional pulses will be reduced before they even have a chance to get to the motor mount isolators. Crankshaft balance is a finite fixed thing, crankshaft dampers do not affect balance unless they have a counterweight incorporated into them. The damper does nothing to change the balance when it is operating, that is a common misconception stemming from the term “harmonic balancer.” Harmonics are not balanced, they are damped or absorbed if it is a rubber type. The type of motor mounts you choose will not affect the crankshaft vibrations, the composition should be determined based on general preference, performance level desired, and overall ride comfort desired in the passenger compartment. I personally prefer polyurethane type mounts, but that is my preference.
 
3500GMC said:
Welcome to TTS, Ivan.

3 of my vehicles spin FD's One being the truck in my signature, the other two are on my SBC's..

Good bunch here.
Click to expand...

Thank you for the welcome!

We appreciate the brand loyalty. What are the small block applications? Racing, Street Rod?

Luckily, working for a company that practices true (made here with American materials) 100% Made in U.S.A. makes my job easy. We truly feel that we have the best customer service in the industry. I guess my point is, between the product and customer service it is not hard finding customers.
 
Welcome Ivan, I can say it was nice to have you join in the new group buy going on now in another thread.

Thanks
 
inc4203 said:
What are the small block applications? Racing, Street Rod?
Click to expand...

Trucks, both toys really, 84 K10 Scottsdale on/off road mild build, 74 C10 406 internal balance, shifted at 7000 (or so :D). Both use identical balancers- can't remember the part number.
 
Depending on when you bought the part # may have changed but likely the 6 1/4" part# 620101. We do offer a few different diameters but the 6 1/4" is the most popular.

Toys are great. I also have a toy, 1988 2500 3/4 ton with a 350 crate and of course some extras (exhaust, edelbrock 4 barrel, jacked up, etc.). Truck is great condition, no rust.
 
Awesome! Yeah IIRC they were both the SFI 6.25" jobbys. Plenty of damping capacity for my app. Both are auto transmissions too. I've always wondered if the torque converter had and damping effect on the rotating assembly.. Maybe?
 
The torque converter has just as much effect on the rotating assembly as a flywheel would on a manual transmission engine, it is just an additional mass in the system as far as the crankshaft is concerned. The torque converter has a damping effect on the driveline after the engine, similar to a sprung clutch hub would, by preventing vibrations from being passed down the line to the transmission and the driveline.
 
so how about dual mass flywheels? alot of guys switch to solid and they're supposed to have a balancer/dampner at the end of the trans, most don't use it, would that affect crank in any way?
 
The trans damper does not play a role in protecting the crank. However, by switching from a dual mass flywheel to a solid flywheel will upset the inertia balance of the engine. Therefore, by doing so, one should look into an aftermarket crank damper to extend the longevity of crankshaft, bearings, oil pumps, etc.
 
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