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Hi Josh! You have a 3600 lb car sitting still and your spinning your engine 7000 RPM and you want a small single friction disc to make your 3600 lb car's transmission engage to your engine spinning 7000 rpm at 12 PSI.........
The RPS Max 6 puck is an amazing clutch for a single disc and it has amazed a lot of folks what it can do and how long it can last with the abuses they have been given.
There is a point where anything can be destoyed......
The 6 puck is designed to grab quickly and hold power....Launching at 7000 RPM with 12 PSI boost is not a good combination and will not result in the best launch and is more than is reasonable to ask out of the set up.
We do have some people out here successfully launching at 7000 RPM, but they are doing it with twin disc carbon carbon's or without boost.
If you launch at 3000 RPM with a sticky tire and no boost you will most likely bog. If you lauch between 5000 and 7000 without boost you can get a really good launch and the clutch you have does handle it well. If released quickly as it gets enough momentum going before the clutch pulls the RPM down to the cars speed as it grabs..... You need to think about what you're wanting the car, engine, and clutch to do.
You want to get the car moving and you want the engine to get in a RPM range that it makes power and moves the car in the engines best power band. You want to slip the clutch as little as possible to get the engine and trans engaged.
If you launch at 7000 RPM under 12 PSI boost, the boost will shoot up farther instantly and you will have a very hard time getting the clutch to fully engage and have the car catch up to the engine speed......This will cause the clutch to slip and will not net the best run and will overheat the clutch causing it to reduce its life.
If you launch under boost you do not need as much RPM to get the car going without a bog.
Under boost you should be able to achieve the best launch around 4000 to 4500 RPM.....This will allow the car to get going and the clutch will ingage quickly and will not bog because the boost will be building as the clutch engages. This will allow the clutch to live and you will also be able to achieve the best 60 foot times for your set up.
Launching at 7000 RPM can be done with the 6 puck clutch if your not making boost.....This is because with less power the disc will pull the RPM down quickly as the car begins to move and you can achieve a launch without bog and the Rpm ends up in the middle of the RPM range when the boost comes up and the clutch can grab before making serious power.
The holding power of a clutch has to do with the clamp load, surface area , and material. The holding power once engaged is completely different than the holding power when slipping the clutch and looking for it to grab.
What you're asking that clutch to do was not resonable.
The RPS Carbon Carbon Twin Disc could take on what your asking, but I dought your tires would hold launching that high at that boost level.
Most friction materials loose holding power as they heat up as the co-effceint of friction goes away with heat.
The carburized carbon RPS uses in the twin disc carbon carbon clutch actually has a higher co-efficient of friction as the temperature rises......So what happens as you lauch a carbon carbon, the heat from it slipping causes it to grab more :-)
I do have a new single disc clutch coming out after the new year that will work better than the Max 6 puck and will also allow better shifting and it will be easier on the trans.
Contact me by email or phone and I can over it with you.
Cheers and Happy Holidays!
Greg
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