What Gives?: Twin Disc Systems by the numbers
Hmmm...... I read this whole thread and I was hoping maybe Turbo Trix would comment since they are running the act clutch. I know a lot of tuners/vendors are gonna be somewhat biased on what clutch they use but Id like to hear why turbo trix 1 of the fastest evos in the US is using a Act clutch and not a exedy?
We would have gotten ours about the same time as you did Quinn. Doesn't matter, whatever, hopefully they sort it out.
We are putting this car on our dyno next week, see how it holds up to just that first, this EVO should put down over 600 whp.
Nothing against ACT here. We have sold and ran them since before Dirk owned his own shop. Been there since basically day 1 with them.
The DSM clutches are outstanding.
From what I know Turbo Trix is running their 2900 or 3100 pound unit, can't remember which, I spoke to Jeff about it at the shootout last year. That is not what I call a daily driver type clutch. Pedal pressure sucks, great for racing though.
We have installed two of the ACT's here and I am not impressed with the shifting on either car. Also was the fastest failure we saw in any EVO clutch. Very abusive driver only a mid 12 second EVO but clutch was done within 2 months.
I take that back, had an Exedy hyper single fail in a couple of weeks, fairly high HP EVO, I am guessing 425 whp, we did not sell the customer the single and wouldn't recommend it for an EVO. Shifted beautiful though, just wouldn't hold the power.
David Buschur
www.buschurracing.com
We are putting this car on our dyno next week, see how it holds up to just that first, this EVO should put down over 600 whp.
Nothing against ACT here. We have sold and ran them since before Dirk owned his own shop. Been there since basically day 1 with them.
The DSM clutches are outstanding.
From what I know Turbo Trix is running their 2900 or 3100 pound unit, can't remember which, I spoke to Jeff about it at the shootout last year. That is not what I call a daily driver type clutch. Pedal pressure sucks, great for racing though.
We have installed two of the ACT's here and I am not impressed with the shifting on either car. Also was the fastest failure we saw in any EVO clutch. Very abusive driver only a mid 12 second EVO but clutch was done within 2 months.
I take that back, had an Exedy hyper single fail in a couple of weeks, fairly high HP EVO, I am guessing 425 whp, we did not sell the customer the single and wouldn't recommend it for an EVO. Shifted beautiful though, just wouldn't hold the power.
David Buschur
www.buschurracing.com
like i also said, we can blame mitsu for being cheap... not like thats anything suprising.. as far as clamping force, for stock its good.. the disk is a different story..it just wasnt ment for our cars.. a 1st or 2nd gen yes..
Originally Posted by MattGold
Exedy produces clutches for 11 Vehicle Manufactures in Japan. Exedy and its sister company Aisin hold 85% of the OEM clutch market in Japan. They also produce clutches for American manufactures GM and Ford. For example Exedy has just won the contract for the new Chevy Cobalt clutch and have moved into production.
When Exedy develops an OEM clutch it is designed to THE MANUFACRUES specifications and to THEIR quality standards. Deviating from these standards is NOT permitted weather Exedy feels the clutch is good or bad.
It is Exedy’s opinion that the OEM clutch is extremely good and well within specs for it's intended purpose (stock, proper break in, easy driving). Exedy has it’s own opinions on why clutches are burning out stock, but that is another issue.
Exedy designs performance clutches in the shadow of the OEM, but to what the engineers think would be appropriate for the performance enthusiast.
In the event Exedy deviates from Specified Quality Specs provided by the manufacture, here is what happens
-The production line stops
-2000 people on the production line stand still for 1 minute
-The amount Exedy is fined is approx. $8000 PER MINUTE.
Hence, when people say an Exedy clutch cover doesn't disengage, we question it since Exedy supplies manufactures with 5000 clutches / month and none are faulty.
It leads Exedy to believe that installation is improperly done or other factors influence it’s performance. Robotics on the line checks EVERY OEM unit before it leaves the plant. As for Performance - Robotics AND Visual checks are performance before it leaves.
-M
When Exedy develops an OEM clutch it is designed to THE MANUFACRUES specifications and to THEIR quality standards. Deviating from these standards is NOT permitted weather Exedy feels the clutch is good or bad.
It is Exedy’s opinion that the OEM clutch is extremely good and well within specs for it's intended purpose (stock, proper break in, easy driving). Exedy has it’s own opinions on why clutches are burning out stock, but that is another issue.
Exedy designs performance clutches in the shadow of the OEM, but to what the engineers think would be appropriate for the performance enthusiast.
In the event Exedy deviates from Specified Quality Specs provided by the manufacture, here is what happens
-The production line stops
-2000 people on the production line stand still for 1 minute
-The amount Exedy is fined is approx. $8000 PER MINUTE.
Hence, when people say an Exedy clutch cover doesn't disengage, we question it since Exedy supplies manufactures with 5000 clutches / month and none are faulty.
It leads Exedy to believe that installation is improperly done or other factors influence it’s performance. Robotics on the line checks EVERY OEM unit before it leaves the plant. As for Performance - Robotics AND Visual checks are performance before it leaves.
-M
Last edited by Curt@MrLed; Feb 12, 2005 at 05:25 AM.
well from a stand point of the everyday person ( i cringe saying that) they are both good clutches, reading this whole thread, and posting a couple times, im still going to go with the rps..its going to take me longer to get it cause i have to upgrade my turbo (no choice of my own) first.. i only want 425 whp, so i firmly beleive i will not wear it out.. and by some odd chance i do it will be cheaper to rebuid.. i have now driven an evo with this clutch, and the pedal is softer than the act i have now.. same drivability though.. flame if you want, but i beleive you get what you pay for, and i always go with the underdog.. because they have to work alot harder to put out a better product than the bigger companys..finally, i really dont think this thread is just a pissing match.. it has been very informative and very professinal by the vendors...
Originally Posted by TalonRcR
I see 2 or 3 on here if you read the whole post.
yes...still a hot topic. I may have been a little unforgiving on the original post, but individual problems exist with any clutch that is asked to perform several duties:
1. Flawless daily driving.
2. qucik shifting due to minimal inertia at high RPM
3. Ability to quickly transfer large amounts power through an unforgiving AWD drivetrain (launch)
I believe that the Exedy can and will perform all 3 duties with ease if you take care of your clutch and allow it to cool down after each launch.
The RPS has an edge only in the launch category due to it's true carbon to carbon friction surfaces.
Call anytime to discuss clutch options.
thanks
dru
1. Flawless daily driving.
2. qucik shifting due to minimal inertia at high RPM
3. Ability to quickly transfer large amounts power through an unforgiving AWD drivetrain (launch)
I believe that the Exedy can and will perform all 3 duties with ease if you take care of your clutch and allow it to cool down after each launch.
The RPS has an edge only in the launch category due to it's true carbon to carbon friction surfaces.
Call anytime to discuss clutch options.
thanks
dru
Wow.. haven't been on these forums in a long time....
In the market for a strong clutch for drag racing. Would like to try out the RPS since there are so few people out there with it, compared to the Exedy.
Anyone want to donate one, or have some deep discounts on them? I will be the unbiased guinea pig for this.
In the market for a strong clutch for drag racing. Would like to try out the RPS since there are so few people out there with it, compared to the Exedy.
Anyone want to donate one, or have some deep discounts on them? I will be the unbiased guinea pig for this.
This thread isn't dead yet!!!
Can the Exedy Triple Carbon be rebuilt when it wears out? I am under the impression that that RPS owners can replace the carbon disks for around $400 bucks and not have to buy an entirely new clutch.
Still, I want the Exedy Triple Carbon. Is $3000 a good deal?
Can the Exedy Triple Carbon be rebuilt when it wears out? I am under the impression that that RPS owners can replace the carbon disks for around $400 bucks and not have to buy an entirely new clutch.
Still, I want the Exedy Triple Carbon. Is $3000 a good deal?
The RPS Carbon/Carbon has performed flawlessly around here. 3 High powered evos locally have them and one that drag races every week with a best time so far of 11.0@130 on pump gas. I can't imagine any clutch being better than the RPS.
Being able to rebuild the clutch for a good amount should be looked at as well. RPS has everybody beat with that.
Being able to rebuild the clutch for a good amount should be looked at as well. RPS has everybody beat with that.
Last edited by Geo@EvoStore; May 13, 2005 at 06:00 AM.
Originally Posted by Smogrunner
This thread isn't dead yet!!!
Can the Exedy Triple Carbon be rebuilt when it wears out? I am under the impression that that RPS owners can replace the carbon disks for around $400 bucks and not have to buy an entirely new clutch.
Still, I want the Exedy Triple Carbon. Is $3000 a good deal?
Can the Exedy Triple Carbon be rebuilt when it wears out? I am under the impression that that RPS owners can replace the carbon disks for around $400 bucks and not have to buy an entirely new clutch.
Still, I want the Exedy Triple Carbon. Is $3000 a good deal?
As for rebuilding - not a problem! We sell all the rebuild parts - and in fact we are soon going to be offering *in house* rebuild services on all our Hyper Series clutches very soon. Why chance the local Billy-Bob to resurfacing your flywheel and pressure plate correctly (don't forget the step!) when you can have Exedy rebuild it for you?
More info on this later...
Originally Posted by Geo@EvoStore
The RPS Carbon/Carbon has performed flawlessly around here. 3 High powered evos locally have them and one that drag races every week with a best time so far of 11.0@130 on pump gas. I can't imagine any clutch being better than the RPS.
Being able to rebuild the clutch for a good amount should be looked at as well. RPS has everybody beat with that.
Being able to rebuild the clutch for a good amount should be looked at as well. RPS has everybody beat with that.
Al is running 9.90's and AMS is 10.0's on Triple Carbon... Curt Brown is running 10.90's on our Twin Metallic!
Don't have to use your imagination for those!
Originally Posted by MattGold
$3000 is a damn good deal... maybe a little too good - but we won't go into that.
Anyways, Matt thinks for the info. on the Cusco rebuild and the HD PP for the Exedy triple carbon.
Originally Posted by MattGold
Al is running 9.90's and AMS is 10.0's on Triple Carbon... Curt Brown is running 10.90's on our Twin Metallic!
Don't have to use your imagination for those!
Don't have to use your imagination for those!
We know the Exedy is proven when you use the Triple Carbon but they where asking about people using the RPS and I was giving an example.