Pro street clutches

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Pro street clutches

This is a discussion about Pro street clutches within the MIROCK Series section, where you will MiRock Series Racers Pit Here!!!; What's the latest? I heard at the race that the bikes don't have to stall anymore, basically a slider now. Is this true?

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    Default Pro street clutches

    What's the latest? I heard at the race that the bikes don't have to stall anymore, basically a slider now. Is this true?
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    No!
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    OEM, factory Stock clutches only from here on out in Prostreet.

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    Maybe true for next year.
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    Ronnie I heard there was a meeting and going forward you can do whatever you want with the gen2 style clutch. Jason would have to verify.
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    There was meeting, but as far as doing whatever you want, I'm not sure that was the take away I got...
    Nothing will be a rule unless the rulebook is updated. It was just a discussion.

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    so what exactly was the takeaway theme from this meeting??

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    Nothing major, mostly discussions relating to eliminating the stalling requirement for the clutches, primarily because it is difficult/ impossible to tech due to the many variables that would cause a bike to stall or not.
    Specifying a minimum static was mentioned, however tech is very difficult for that as well.
    Talk about still requiring the pressure plate to move and disengage when the lever is pulled.

    Other items discussed were related to tires (what to use and would manufacturers make suitable tires) and use of E85/alcohol, although these were more of a casual discussion that came up.

    My personal opinion was/is to just make sliders and "hand clutches" legal for all entries if the stalling requirement was no longer going to be a requirement. With enough tweaking, a "hand slider" could perform pretty much the same as a slider and still have the pressure plate movement.

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    Exactly the clutch lever is the button!
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    any new ideas bouncing around out there on tires?

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    Quote Originally Posted by 04MladinGSXR View Post
    any new ideas bouncing around out there on tires?
    This is just an overall summary of some of the thoughts that were thrown around and nothing official. Mostly para-phrased and may or may not be an accurate depiction of what was said.


    Talk of the MCR2 replacement tire still being held off until current stock is depleted.

    P1 likely never being made again

    Motorcycle drag racing really not an appreciable market to tire manufacturers, especially if the tire has high life

    Slicks look like hell

    Testing a tire on a 7.0 bike that runs 195 is not the same as one that runs 215

    If a spec tire was developed costing $350 and it only lasts a few passes, so be it, everyone will have to run it

    Some tire companies may still be trying to work on drag racing tires

    Some people still have plenty of P1's and should still be allowed to use them

    Sliders are different from "Hand Sliders"

    You don't understand, Static increase from weights on a clutch is not linear, it rises like this

    Is it safe to run a "Hand slider" with the pressure plate just flopping around?

    The spring assisted trans was seen in the bike.

    Well, it was in a box on the floor

    Sliders need very large springs to hold the pressure plate off of the clutch stack

    Pretty much everyone likes E85 except Jason [Miller]

    The data in the ECU was copied

    Transmission rule definition of an auto is determined by the ability of the trans to be engaged in 2 gears at once

    Springs in a transmission don't necessarily make it capable of being in 2 gears at once

    Spring assist allows 10 ms shift kill

    F1 has 14ms shift kill with high pressure hydraulic shifting

    Geeze [Don't tase me bro], the 10ms was just an estimate

    Don't let off and allow a trans with extremely ramped gears "de-ccellerate" in gear

    Crazy 8's should have the stall rule

    Andy Sawyer is good at figuring out things

    Doug Gall is good at being a nut, maybe not so much at the figuring out things

    I think that about sums it up.

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    Thats a mess. LOL

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    Quote Originally Posted by sportbikeryder View Post
    This is just an overall summary of some of the thoughts that were thrown around and nothing official. Mostly para-phrased and may or may not be an accurate depiction of what was said.


    Talk of the MCR2 replacement tire still being held off until current stock is depleted.

    P1 likely never being made again

    Motorcycle drag racing really not an appreciable market to tire manufacturers, especially if the tire has high life

    Slicks look like hell

    Testing a tire on a 7.0 bike that runs 195 is not the same as one that runs 215

    If a spec tire was developed costing $350 and it only lasts a few passes, so be it, everyone will have to run it

    Some tire companies may still be trying to work on drag racing tires

    Some people still have plenty of P1's and should still be allowed to use them

    Sliders are different from "Hand Sliders"

    You don't understand, Static increase from weights on a clutch is not linear, it rises like this

    Is it safe to run a "Hand slider" with the pressure plate just flopping around?

    The spring assisted trans was seen in the bike.

    Well, it was in a box on the floor

    Sliders need very large springs to hold the pressure plate off of the clutch stack

    Pretty much everyone likes E85 except Jason [Miller]

    The data in the ECU was copied

    Transmission rule definition of an auto is determined by the ability of the trans to be engaged in 2 gears at once

    Springs in a transmission don't necessarily make it capable of being in 2 gears at once

    Spring assist allows 10 ms shift kill

    F1 has 14ms shift kill with high pressure hydraulic shifting

    Geeze [Don't tase me bro], the 10ms was just an estimate

    Don't let off and allow a trans with extremely ramped gears "de-ccellerate" in gear

    Crazy 8's should have the stall rule

    Andy Sawyer is good at figuring out things

    Doug Gall is good at being a nut, maybe not so much at the figuring out things

    I think that about sums it up.
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    so what are some details or info on this spring assist trany?

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    thats awesome///Made my day
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