My post was in response to your...
"I don't know anyone running a rag disc any more. You see, you haven't learned enough yet to understand why an adjustable PP and sintered iron disc is a better way of doing it."
I was pointing out that some people do still run rag discs and are competitive. I used the Coyote class as an example because there is no other class out there where the cars are all basically the same and they all have exactly the same power to work with. All have the same engines, same weight, same tune, same transmissions, same fuel. As far as winning races at their power level, either organic or sintered iron can get the job done.
As for comparing this diaphragm class to other classes that do allow adjustable clutches, I use the old 1320/mph=ET formula to compare relative efficiency. If you know of a better rule of thumb to compare relative efficiency, please let me know. I basically compare how much above or below the formula's prediction the car might be running for a given power/weight ratio. The competitive Coyote car ET is typically within a tenth + or - of the formula. Apply the formula to NHRA class records for cars running around the same 130mph power/weight ratio, their state of the art clutches fare about the same.
Grant
I'm sure there are people running rag discs. I have no doubt. Some people still think the earth is flat.i can't fix them either.
What's interesting is a thread in the suspension or chassis forum. A guy broke his 8.75 with his parts breaking clutch and was asking about switching to a D or S60.
Now, I have ZERO issues with wanting to upgrade the rear axle. None. BUT (and this is a HUGE BUT) the OP didn't actually FIX the ISSUE and that issue is his junk, outdated, obsolete clutch. He is applying a band aid where he needs an amputation.
If you go find the thread, I think I made the case for BOTH an adjustable clutch and the CT. I think I laid it out as clear as reasonably possible without a Biblical length response.
Did the OP upgrade his axle? I think so. Is he going to do something about his junky clutch? I doubt it.
It's human nature to take the easy way out, rather than do two things to fix an issue. If the axle survives, than in his mind, it was a success.
The reality is, he gave up way more than he needed to by not addressing his clutch issue. And I think Jpar can address that. He has said in what little time he's had with his CT he can tell how much more control over applying the clutch he has. And that's a BIG deal.
Of course, you had guys in that thread who haven't used a clutch since 1981 telling him to swap out the axle. Like I said, I'm all for it. Just do both. Address the weaker rear axle and the junk, parts eating, miserable to drive clutch.
You should go find the thread and read it.
...
