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Sportster Motorcycle Drag Racing Discuss drag racing on a Sportster Motorcycle.

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  #1  
Old 31st August 2018
Tinz Tinz is offline
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Default Mixing frictions



Which style is better and can a guy use a mix in the stack?


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Old 31st August 2018
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I would just call Kent at Energy One, and be done...
or?????
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Old 31st August 2018
Four Speed Four Speed is offline
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Or ..........Barnett.

I suspect it is the fiction material that is the issue, rather than the fixing pattern. I am not sure what you would gain from mixing plates but
it should still work if the stack height is within specs. On the other hand I wouldn't mix them for use in a high output engine as different
materials reputedly offer different engagement properties and you want all the plates to heat/wear evenly. Try it, tell us what happens!
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Old 31st August 2018
mac93 mac93 is offline
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Default

You can mix em. Trying to keep the stack height consistent? E-One has different thickness steels to help with that.
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Old 31st August 2018
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Default

If there is NO SPECIFIC ADVANTAGE, why would you?

Do you already have a mix and are trying to avoid buying all the same?

Personally, I would only do it in an emergency situation - while ordering a proper matching set...

It seems to me, if any one friction has less 'stickiness' than the others, you're going to put a lot of usage on that one...

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Old 31st August 2018
Jollly Rogers Jollly Rogers is offline
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There is no differential speed on a multi stack clutch pack. How can one friction or steel get more wear?
The gap when the glutch is released will average out.
The only thing that would cause specific friction or steel wear would be uneven wear on the hub/drum splines. The spline irregularity could keep the clutch pack locally applied and also cause drag and hard shifting.
Joe
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OK - I reconsidered...

It would actually be the more sticky frictions that would get the additional wear...

Without a technical argument, I'll just stick with saying that it's not something I would do...

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Tinz Tinz is offline
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Just going through my spares, inspecting/measuring steels and frictions, putting a 3rd spare stack together, was just curious.

Only 2 runs on a new Barnett stack, my 60' is where it should be ( mid 1.4 ), will see how many runs I can get before it starts going away. Hopefully I can finish the season on the new clutch, only 2 races left. Testing tonight, will be some cooler air, looking for a 10.2 and some better lights!
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Tinz: brand are those plates? Top one looks Barnett.
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Tinz Tinz is offline
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Quote:
Originally Posted by Sprtstr1200s View Post
Tinz: brand are those plates? Top one looks Barnett.
Yes I believe the top style are Barnetts.....Not sure on the wider ones, got a bunch that came with the bike, some were in a Drag Specialties box.
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