I no longer own a 3S. If I had it to do over again, I would use the OEM pulley.Quote:
Originally Posted by zba857
I no longer own a 3S. If I had it to do over again, I would use the OEM pulley.Quote:
Originally Posted by zba857
Well BigTyla, thats enough for me. Having your OP is enough for me. I like knowing what the differences are and why the lighter solid pulley isn't as good as the factory one, but if most people running "normal stock setups" aren't having problems with the solid pulley, I don't see why I shouldn't try it. Then again, if I put it on and notice noise or vibrations I don't like...... I will inevitably switch back to stock.... but I think I'm going to like this thing. :)Quote:
Originally Posted by BigTyla
Awww man... now I'm confused. lolQuote:
Originally Posted by BigTyla
So why you say that? Just because of the dampening needs as you stated earlier?
What about the age of the OEM pulleys sitting in the warehouses though?
why doesn't someone manufacture one like oem with rubber in aluminium? you would get both the dampening a the lightweight benefits. obviously there's a market for it.
i think the market isn't as large as you might think because the performance gains aren't as large as you'd like to believe. what's the highest amount of gain anyone with a TT has gotten from switching from OEM to aluminum UNDERDRIVE--anyone know?Quote:
Originally Posted by Ange
let's call that amount of gain "X", and let's assume (for the sake of argument) that it's an optimistic 5whp. afaik, i've never seen a rubber-dampened UNDERDRIVE pulley, so any aluminum one would have to be stock sized--which kills a large percentage of said gain. it's also going to weigh a fair deal more than solid underdrive, so that's going to kill more gain as well.
at the end of the day, how much r&d needs to be done on a part that will likely cost more than stock (due to the numbers being produced) and for gains that amount to less benefit than if you yourself cut down on eating doritos?
yeah... There was a time when fisher concepts made an aluminium pulley with a dampener inside it the price was somewhere around 350$, gb price was less than 300$ and the gb quickly turned into a huge debate and nothing came out of it. this dampner was also available in udp form and less heavier than the oem .. What really makes me shake my head is the fact they sold these dampeners for like 6 or 7 years and only a handful of people bought it
wow 350$ that's op as hell imo for such a simple part.
I mean mass producing these to say 100-200 something copies shouldn't be too expensive. aluminium is fairly cheap 2$/kg or so I think and easy to cut with machine. and you already have the design/mold ready from oem. Shouldn't be hard to get some manufacturer to produce you the rubber ring at a scale of 100-200 either.
oh well just some thoughts :)
as for the performance aspect every bit of loss in rotationall mass makes a difference especially when you pile them on.
the fisher dampners were far different dampning technology than mitsu's rubber also quite a different construction so there was no risk of it falling apart like the oem dampener..
They used a dry friction technology/ inertia-weights. It works like a clutch type design that give movement to absorb shock, instead of a part flexing. This gives a much broader range of dampning. Lets say the oem is ´maxed out´ around 5k RPM's, this won't max out until 12-15k(thats what they claim) and also improves the durability and exaggerated reaction time / more abrupt/harsher dampning requirements than stock.
also the technology has a much longer life than other dampning technologies
Pretty much. Being more educated in vibration analyses has made me paranoid. :)Quote:
Originally Posted by ProwlerGT
OEM pulleys sitting on a shelf should not be of any worry. Stored properly, a 10+ year-old pulley with the rubber ring would be just as good as one made within the last year.
LOL - I see. Paranoia. I'm in that camp too, though the fact that you and others have used it for so many thousands of miles has me having bought one (3SX aluminum). I hope to get it on sometime this week. I may order a Mitsu crank pulley as well (or maybe 2 if I can afford it) because my paranoia also says that these may not be available someday and I have no plans to get rid of my 3000...... EVER. Frankly BigTyla... I'm surprised you got rid of yours. I guess expense finally caught up with ya.Quote:
Originally Posted by BigTyla
I guess the key is "stored properly" for the parts in the warehouse - How much anyone want to bet they didn't keep the a/c running to save on energy bills? :) I left some plastic pool parts out in our shed in a "cracked" rubbermaid leaving only maybe 5% air leaking into it over a 7 month period and everything in there went dry rot over the course of the winter. Granted this is probably a horrible example, as these crank pulleys are probably in sealed plastic and the stuff in my shed was thin cheap plastic not meant for extreme heat/cold conditions in a car, but I digress I guess.