Drivetrain TRUE Light Weight Vibration Damper Replacement Crank Pulley
#76
Originally Posted by cdconsor
if there is, I'm in.
#78
#79
#82
#83
looks like this crank pulley must be doin somethin better than the alta for the over 150 buck difference.... what is the biggest difference aside from the fact you guys have the vib dampener
im almost ready to pull the trigger, but i'd love to hear long term effect on the belt, especially paired with a 15% pulley
im almost ready to pull the trigger, but i'd love to hear long term effect on the belt, especially paired with a 15% pulley
#84
Originally Posted by kyriian
looks like this crank pulley must be doin somethin better than the alta for the over 150 buck difference.... what is the biggest difference aside from the fact you guys have the vib dampener
im almost ready to pull the trigger, but i'd love to hear long term effect on the belt, especially paired with a 15% pulley
im almost ready to pull the trigger, but i'd love to hear long term effect on the belt, especially paired with a 15% pulley
The belt wear on a 15% is about the same then as with the stock crank pulley. The main diffrence is that your performance is closer to that of a 19% pulley but has that better belt wear.
#87
#88
We can get diffrent sizes of pullies. I have a 5% now, but a 2% can be made with out any problems.
With the proper Tools, The install is alot easier then ever the Super Charger Pulley. There is a lot more room to work, and the tools are made by Mini so they work just as intended.
As I stated Earlier, I am waiting on a small revision to make it ready to sell, then We can discuss a group buy and such.
With the proper Tools, The install is alot easier then ever the Super Charger Pulley. There is a lot more room to work, and the tools are made by Mini so they work just as intended.
As I stated Earlier, I am waiting on a small revision to make it ready to sell, then We can discuss a group buy and such.
#90
#91
Same price as stated earlier.
Nice job there Dan
I haven't forgotten about the UUC thing... still dealing with the exhaust (a few innovative bugs to fix).
Nice job there Dan
I haven't forgotten about the UUC thing... still dealing with the exhaust (a few innovative bugs to fix).
Originally Posted by SumWon
I would also be interested in a 2% as opposed to a 5%. Would the custom size come along with a custom price, or will you just be offering multiple sizes?
#92
Originally Posted by RECOOP
Many thanks for the reference. I'll try to track down the SAE paper from 1979, unless you can post it .
It appears that the problem of crankshaft torsional vibration may be quite important for very high performance applications such as drag racing. Perhaps one can extend the logic to modified Minis that are taken to the track? How about fairly aggressive street driving? Would you also comment on the use/availability of a fluid damping system in a Mini that is pulling 200+ whp?
Thanks,
It appears that the problem of crankshaft torsional vibration may be quite important for very high performance applications such as drag racing. Perhaps one can extend the logic to modified Minis that are taken to the track? How about fairly aggressive street driving? Would you also comment on the use/availability of a fluid damping system in a Mini that is pulling 200+ whp?
Thanks,
Personally run dozens of 1/4 mile times and lots of stupid street antics and never had an issue. Never known anyone with an issue.
The day Fluidamper starts selling one in OEM dialneter for the MINI I'll be buying one.
Granted, the MINI engine is far more refined than the dinosaur engines I played with but I'd still think it was money well spent.
RECOOP..
A better damper is an even better bargain with lightened FW/clutch combos.
I ran those as well.
#93
Originally Posted by cdconsor
I'm more interested in 5%. Say... since we've talked about group buys, would we need to do 2 separate group buys, one for 5% and one for 2%? or can we group them together? Also how many would we need to constitute a group buy?
Thanks
Chuck
Thanks
Chuck
The good thing is that the retail price for any size is the same, so all things being equal, I can do any size for the same price, at the same given quantities.
#94
Vibration damping similarity to stock?
Can you say how the damping provided by this device compares with the stock unit?
I would think that, to be effective, the natural frequency of the outer ring vs the hub, in torsion about the crankshaft axis, would be similar to that of the stock unit, which the engine designer would have determined as optimum, and the energy absorption of the elastomeric material would be equal or greater than stock.
I would think that, to be effective, the natural frequency of the outer ring vs the hub, in torsion about the crankshaft axis, would be similar to that of the stock unit, which the engine designer would have determined as optimum, and the energy absorption of the elastomeric material would be equal or greater than stock.
#95
Originally Posted by DunWaiten
Can you say how the damping provided by this device compares with the stock unit?
I would think that, to be effective, the natural frequency of the outer ring vs the hub, in torsion about the crankshaft axis, would be similar to that of the stock unit, which the engine designer would have determined as optimum, and the energy absorption of the elastomeric material would be equal or greater than stock.
I would think that, to be effective, the natural frequency of the outer ring vs the hub, in torsion about the crankshaft axis, would be similar to that of the stock unit, which the engine designer would have determined as optimum, and the energy absorption of the elastomeric material would be equal or greater than stock.
#96
Originally Posted by DunWaiten
Can you say how the damping provided by this device compares with the stock unit?
I would think that, to be effective, the natural frequency of the outer ring vs the hub, in torsion about the crankshaft axis, would be similar to that of the stock unit, which the engine designer would have determined as optimum, and the energy absorption of the elastomeric material would be equal or greater than stock.
I would think that, to be effective, the natural frequency of the outer ring vs the hub, in torsion about the crankshaft axis, would be similar to that of the stock unit, which the engine designer would have determined as optimum, and the energy absorption of the elastomeric material would be equal or greater than stock.
#97
How does a clutch/brake style damper work?
Thanks for the info MiniPilo. After looking at the photos in post #1, I incorrectly assumed this was an elastomeric type damper, with the black ring on one face being the elastomer.
I've read about elastomeric and fluid-damped types, and also the "Rattler" type. But, I haven't been able to find any info about a clutch/brake type, at least via Google searching. I'd like to learn how such a design works. Can anyone here point to a description of this type?
I've read about elastomeric and fluid-damped types, and also the "Rattler" type. But, I haven't been able to find any info about a clutch/brake type, at least via Google searching. I'd like to learn how such a design works. Can anyone here point to a description of this type?
#98
Originally Posted by DunWaiten
Thanks for the info MiniPilo. After looking at the photos in post #1, I incorrectly assumed this was an elastomeric type damper, with the black ring on one face being the elastomer.
I've read about elastomeric and fluid-damped types, and also the "Rattler" type. But, I haven't been able to find any info about a clutch/brake type, at least via Google searching. I'd like to learn how such a design works. Can anyone here point to a description of this type?
I've read about elastomeric and fluid-damped types, and also the "Rattler" type. But, I haven't been able to find any info about a clutch/brake type, at least via Google searching. I'd like to learn how such a design works. Can anyone here point to a description of this type?
Another topic that is out there is the weight of this product. Remember, lightening the damper does help a bit, but that is not going to be where your power comes from. Remember how much rotating mass there actually is including the Fly Wheel (much heavier, and larger diamater), Pistons, Rods, Crank, etc. So even though you can remove some weight from the pulley, as all Crank Pullies are doing, most of the gains that you will see in performance is from increased boost.
Also we are by no means bashing any one elses products, just stating the facts about why dampers are a very important and that they were added to your S for a reason
Last edited by MiniPilo; 05-06-2005 at 08:38 PM.
#99